From 8fc05a090585374564082bbac56812543c3f997d Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 01/80] sequencer: lib'ify sequencer_pick_revisions() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The function sequencer_pick_revisions() has only two callers, cmd_revert() and cmd_cherry_pick(), both of which check the return value and react appropriately upon errors. So this is a safe conversion to make sequencer_pick_revisions() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/sequencer.c b/sequencer.c index 3804fa931d..76b1c52f75 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1063,10 +1063,11 @@ int sequencer_pick_revisions(struct replay_opts *opts) if (!get_sha1(name, sha1)) { if (!lookup_commit_reference_gently(sha1, 1)) { enum object_type type = sha1_object_info(sha1, NULL); - die(_("%s: can't cherry-pick a %s"), name, typename(type)); + return error(_("%s: can't cherry-pick a %s"), + name, typename(type)); } } else - die(_("%s: bad revision"), name); + return error(_("%s: bad revision"), name); } /* @@ -1082,10 +1083,10 @@ int sequencer_pick_revisions(struct replay_opts *opts) !opts->revs->cmdline.rev->flags) { struct commit *cmit; if (prepare_revision_walk(opts->revs)) - die(_("revision walk setup failed")); + return error(_("revision walk setup failed")); cmit = get_revision(opts->revs); if (!cmit || get_revision(opts->revs)) - die("BUG: expected exactly one commit from walk"); + return error("BUG: expected exactly one commit from walk"); return single_pick(cmit, opts); } From 23cb6298a1081f754419c95a10eb8f37ec996616 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 23 Aug 2016 08:54:00 +0200 Subject: [PATCH 02/80] sequencer: do not die() in do_pick_commit() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The eventual caller of do_pick_commit() is sequencer_pick_revisions(), which already relays a reported error from its helper functions (including this one), and both of its two callers know how to react to a negative return correctly. So this makes do_pick_commit() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/sequencer.c b/sequencer.c index 76b1c52f75..baf6b40e7a 100644 --- a/sequencer.c +++ b/sequencer.c @@ -585,12 +585,14 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) * However, if the merge did not even start, then we don't want to * write it at all. */ - if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1)) - update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL, - REF_NODEREF, UPDATE_REFS_DIE_ON_ERR); - if (opts->action == REPLAY_REVERT && ((opts->no_commit && res == 0) || res == 1)) - update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL, - REF_NODEREF, UPDATE_REFS_DIE_ON_ERR); + if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1) && + update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL, + REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) + res = -1; + if (opts->action == REPLAY_REVERT && ((opts->no_commit && res == 0) || res == 1) && + update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL, + REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) + res = -1; if (res) { error(opts->action == REPLAY_REVERT From 42ffcd006d298be391231e6e0f02730766b2948a Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 03/80] sequencer: lib'ify write_message() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of write_message(), do_pick_commit() already checks the return value and passes it on to its callers, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make write_message() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/sequencer.c b/sequencer.c index baf6b40e7a..ec85fe77b4 100644 --- a/sequencer.c +++ b/sequencer.c @@ -180,17 +180,20 @@ static void print_advice(int show_hint, struct replay_opts *opts) } } -static void write_message(struct strbuf *msgbuf, const char *filename) +static int write_message(struct strbuf *msgbuf, const char *filename) { static struct lock_file msg_file; - int msg_fd = hold_lock_file_for_update(&msg_file, filename, - LOCK_DIE_ON_ERROR); + int msg_fd = hold_lock_file_for_update(&msg_file, filename, 0); + if (msg_fd < 0) + return error_errno(_("Could not lock '%s'"), filename); if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0) - die_errno(_("Could not write to %s"), filename); + return error_errno(_("Could not write to %s"), filename); strbuf_release(msgbuf); if (commit_lock_file(&msg_file) < 0) - die(_("Error wrapping up %s."), filename); + return error(_("Error wrapping up %s."), filename); + + return 0; } static struct tree *empty_tree(void) @@ -564,16 +567,16 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) head, &msgbuf, opts); if (res < 0) return res; - write_message(&msgbuf, git_path_merge_msg()); + res |= write_message(&msgbuf, git_path_merge_msg()); } else { struct commit_list *common = NULL; struct commit_list *remotes = NULL; - write_message(&msgbuf, git_path_merge_msg()); + res = write_message(&msgbuf, git_path_merge_msg()); commit_list_insert(base, &common); commit_list_insert(next, &remotes); - res = try_merge_command(opts->strategy, opts->xopts_nr, opts->xopts, + res |= try_merge_command(opts->strategy, opts->xopts_nr, opts->xopts, common, sha1_to_hex(head), remotes); free_commit_list(common); free_commit_list(remotes); From 94f7ad0fce08e7b6d1975ea531ffdc876f52a891 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 04/80] sequencer: lib'ify do_recursive_merge() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of do_recursive_merge(), do_pick_commit() already checks the return value and passes it on to its callers, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make do_recursive_merge() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index ec85fe77b4..eb700913a1 100644 --- a/sequencer.c +++ b/sequencer.c @@ -303,7 +303,8 @@ static int do_recursive_merge(struct commit *base, struct commit *next, if (active_cache_changed && write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) /* TRANSLATORS: %s will be "revert" or "cherry-pick" */ - die(_("%s: Unable to write new index file"), action_name(opts)); + return error(_("%s: Unable to write new index file"), + action_name(opts)); rollback_lock_file(&index_lock); if (opts->signoff) From 595ce8c71d6eb382263691e398d073c9e4d7ad87 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 05/80] sequencer: lib'ify do_pick_commit() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only two callers of do_pick_commit(), pick_commits() and single_pick() already check the return value and pass it on to their callers, so their callers must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make do_pick_commit() callable from new callers that want it not to die, without changing the external behaviour of anything existing. While at it, remove the superfluous space. Signed-off-by: Johannes Schindelin --- sequencer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index eb700913a1..96b9ae1978 100644 --- a/sequencer.c +++ b/sequencer.c @@ -464,7 +464,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) * to work on. */ if (write_cache_as_tree(head, 0, NULL)) - die (_("Your index file is unmerged.")); + return error(_("Your index file is unmerged.")); } else { unborn = get_sha1("HEAD", head); if (unborn) From 5769f3693c9bc855fbecc5eaf9a5364acce7c3f1 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 06/80] sequencer: lib'ify walk_revs_populate_todo() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The function sequencer_pick_revisions() is the only caller of walk_revs_populate_todo(), and it already returns errors appropriately, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make walk_revs_populate_todo() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/sequencer.c b/sequencer.c index 96b9ae1978..ab599e04df 100644 --- a/sequencer.c +++ b/sequencer.c @@ -809,17 +809,19 @@ static void read_populate_opts(struct replay_opts **opts_ptr) die(_("Malformed options sheet: %s"), git_path_opts_file()); } -static void walk_revs_populate_todo(struct commit_list **todo_list, +static int walk_revs_populate_todo(struct commit_list **todo_list, struct replay_opts *opts) { struct commit *commit; struct commit_list **next; - prepare_revs(opts); + if (prepare_revs(opts)) + return -1; next = todo_list; while ((commit = get_revision(opts->revs))) next = commit_list_append(commit, next); + return 0; } static int create_seq_dir(void) @@ -1102,8 +1104,8 @@ int sequencer_pick_revisions(struct replay_opts *opts) * progress */ - walk_revs_populate_todo(&todo_list, opts); - if (create_seq_dir() < 0) + if (walk_revs_populate_todo(&todo_list, opts) || + create_seq_dir() < 0) return -1; if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT)) return error(_("Can't revert as initial commit")); From 8ecbcf48adaabebc19cb1a5d04762a9b67c1af1a Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 07/80] sequencer: lib'ify prepare_revs() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of prepare_revs(), walk_revs_populate_todo() was just taught to return errors, after verifying that its callers are prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make prepare_revs() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index ab599e04df..7fd0f99650 100644 --- a/sequencer.c +++ b/sequencer.c @@ -623,7 +623,7 @@ leave: return res; } -static void prepare_revs(struct replay_opts *opts) +static int prepare_revs(struct replay_opts *opts) { /* * picking (but not reverting) ranges (but not individual revisions) @@ -633,10 +633,11 @@ static void prepare_revs(struct replay_opts *opts) opts->revs->reverse ^= 1; if (prepare_revision_walk(opts->revs)) - die(_("revision walk setup failed")); + return error(_("revision walk setup failed")); if (!opts->revs->commits) - die(_("empty commit set passed")); + return error(_("empty commit set passed")); + return 0; } static void read_and_refresh_cache(struct replay_opts *opts) From 414ea1064f47c4d75b072d6fdb49ff6f855306fc Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 08/80] sequencer: lib'ify read_and_refresh_cache() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). There are two call sites of read_and_refresh_cache(), one of which is pick_commits(), whose callers were already prepared to do the right thing given an "error" return from it by an earlier patch, so the conversion is safe. The other one, sequencer_pick_revisions() was also prepared to relay an error return back to its caller in all remaining cases in an earlier patch. Signed-off-by: Johannes Schindelin --- sequencer.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/sequencer.c b/sequencer.c index 7fd0f99650..631b75dabe 100644 --- a/sequencer.c +++ b/sequencer.c @@ -640,18 +640,21 @@ static int prepare_revs(struct replay_opts *opts) return 0; } -static void read_and_refresh_cache(struct replay_opts *opts) +static int read_and_refresh_cache(struct replay_opts *opts) { static struct lock_file index_lock; int index_fd = hold_locked_index(&index_lock, 0); if (read_index_preload(&the_index, NULL) < 0) - die(_("git %s: failed to read the index"), action_name(opts)); + return error(_("git %s: failed to read the index"), + action_name(opts)); refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL); if (the_index.cache_changed && index_fd >= 0) { if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) - die(_("git %s: failed to refresh the index"), action_name(opts)); + return error(_("git %s: failed to refresh the index"), + action_name(opts)); } rollback_lock_file(&index_lock); + return 0; } static int format_todo(struct strbuf *buf, struct commit_list *todo_list, @@ -981,7 +984,8 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) if (opts->allow_ff) assert(!(opts->signoff || opts->no_commit || opts->record_origin || opts->edit)); - read_and_refresh_cache(opts); + if (read_and_refresh_cache(opts)) + return -1; for (cur = todo_list; cur; cur = cur->next) { save_todo(cur, opts); @@ -1045,7 +1049,8 @@ int sequencer_pick_revisions(struct replay_opts *opts) if (opts->subcommand == REPLAY_NONE) assert(opts->revs); - read_and_refresh_cache(opts); + if (read_and_refresh_cache(opts)) + return -1; /* * Decide what to do depending on the arguments; a fresh From 1dfb45ee770f6be398b518df90c858382ea114a6 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 09/80] sequencer: lib'ify read_populate_todo() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of read_populate_todo(), sequencer_continue() can already return errors, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make read_populate_todo() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/sequencer.c b/sequencer.c index 631b75dabe..c73cdfdac1 100644 --- a/sequencer.c +++ b/sequencer.c @@ -748,7 +748,7 @@ static int parse_insn_buffer(char *buf, struct commit_list **todo_list, return 0; } -static void read_populate_todo(struct commit_list **todo_list, +static int read_populate_todo(struct commit_list **todo_list, struct replay_opts *opts) { struct strbuf buf = STRBUF_INIT; @@ -756,18 +756,21 @@ static void read_populate_todo(struct commit_list **todo_list, fd = open(git_path_todo_file(), O_RDONLY); if (fd < 0) - die_errno(_("Could not open %s"), git_path_todo_file()); + return error_errno(_("Could not open %s"), + git_path_todo_file()); if (strbuf_read(&buf, fd, 0) < 0) { close(fd); strbuf_release(&buf); - die(_("Could not read %s."), git_path_todo_file()); + return error(_("Could not read %s."), git_path_todo_file()); } close(fd); res = parse_insn_buffer(buf.buf, todo_list, opts); strbuf_release(&buf); if (res) - die(_("Unusable instruction sheet: %s"), git_path_todo_file()); + return error(_("Unusable instruction sheet: %s"), + git_path_todo_file()); + return 0; } static int populate_opts_cb(const char *key, const char *value, void *data) @@ -1019,7 +1022,8 @@ static int sequencer_continue(struct replay_opts *opts) if (!file_exists(git_path_todo_file())) return continue_single_pick(); read_populate_opts(&opts); - read_populate_todo(&todo_list, opts); + if (read_populate_todo(&todo_list, opts)) + return -1; /* Verify that the conflict has been resolved */ if (file_exists(git_path_cherry_pick_head()) || From 678556f2680eaa4a2b37ac4098a2501fc6b6177c Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 10/80] sequencer: lib'ify read_populate_opts() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of read_populate_opts(), sequencer_continue() can already return errors, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make read_populate_opts() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Note that the function git_config_from_file(), called from read_populate_opts(), can currently still die() (in git_parse_source(), because the do_config_from_file() function sets die_on_error = 1). We do not try to fix that here, as it would have larger ramifications on the config code, and we also assume that we write the opts file programmatically, hence any parse errors would be bugs. Signed-off-by: Johannes Schindelin --- sequencer.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/sequencer.c b/sequencer.c index c73cdfdac1..1614efb8db 100644 --- a/sequencer.c +++ b/sequencer.c @@ -808,12 +808,20 @@ static int populate_opts_cb(const char *key, const char *value, void *data) return 0; } -static void read_populate_opts(struct replay_opts **opts_ptr) +static int read_populate_opts(struct replay_opts **opts) { if (!file_exists(git_path_opts_file())) - return; - if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts_ptr) < 0) - die(_("Malformed options sheet: %s"), git_path_opts_file()); + return 0; + /* + * The function git_parse_source(), called from git_config_from_file(), + * may die() in case of a syntactically incorrect file. We do not care + * about this case, though, because we wrote that file ourselves, so we + * are pretty certain that it is syntactically correct. + */ + if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts) < 0) + return error(_("Malformed options sheet: %s"), + git_path_opts_file()); + return 0; } static int walk_revs_populate_todo(struct commit_list **todo_list, @@ -1021,8 +1029,8 @@ static int sequencer_continue(struct replay_opts *opts) if (!file_exists(git_path_todo_file())) return continue_single_pick(); - read_populate_opts(&opts); - if (read_populate_todo(&todo_list, opts)) + if (read_populate_opts(&opts) || + read_populate_todo(&todo_list, opts)) return -1; /* Verify that the conflict has been resolved */ From 2495ee2cebe1c4980f541bb8fe5d71f087482f6a Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 11/80] sequencer: lib'ify create_seq_dir() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of create_seq_dir(), sequencer_pick_revisions() can already return errors, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make create_seq_dir() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index 1614efb8db..eb9c473328 100644 --- a/sequencer.c +++ b/sequencer.c @@ -847,8 +847,8 @@ static int create_seq_dir(void) return -1; } else if (mkdir(git_path_seq_dir(), 0777) < 0) - die_errno(_("Could not create sequencer directory %s"), - git_path_seq_dir()); + return error_errno(_("Could not create sequencer directory %s"), + git_path_seq_dir()); return 0; } From f600902d668b298e04405f30b8986eee7664a983 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 12/80] sequencer: lib'ify save_head() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of save_head(), sequencer_pick_revisions() can already return errors, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make save_head() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/sequencer.c b/sequencer.c index eb9c473328..7a1561e6a0 100644 --- a/sequencer.c +++ b/sequencer.c @@ -852,18 +852,28 @@ static int create_seq_dir(void) return 0; } -static void save_head(const char *head) +static int save_head(const char *head) { static struct lock_file head_lock; struct strbuf buf = STRBUF_INIT; int fd; - fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), LOCK_DIE_ON_ERROR); + fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), 0); + if (fd < 0) { + rollback_lock_file(&head_lock); + return error_errno(_("Could not lock HEAD")); + } strbuf_addf(&buf, "%s\n", head); - if (write_in_full(fd, buf.buf, buf.len) < 0) - die_errno(_("Could not write to %s"), git_path_head_file()); - if (commit_lock_file(&head_lock) < 0) - die(_("Error wrapping up %s."), git_path_head_file()); + if (write_in_full(fd, buf.buf, buf.len) < 0) { + rollback_lock_file(&head_lock); + return error_errno(_("Could not write to %s"), + git_path_head_file()); + } + if (commit_lock_file(&head_lock) < 0) { + rollback_lock_file(&head_lock); + return error(_("Error wrapping up %s."), git_path_head_file()); + } + return 0; } static int reset_for_rollback(const unsigned char *sha1) @@ -1127,7 +1137,8 @@ int sequencer_pick_revisions(struct replay_opts *opts) return -1; if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT)) return error(_("Can't revert as initial commit")); - save_head(sha1_to_hex(sha1)); + if (save_head(sha1_to_hex(sha1))) + return -1; save_opts(opts); return pick_commits(todo_list, opts); } From fb74e99fb4088dedb6806787e0aa8a0c7ec9f6c3 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 13/80] sequencer: lib'ify save_todo() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of save_todo(), pick_commits() can already return errors, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make save_todo() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/sequencer.c b/sequencer.c index 7a1561e6a0..32c53bb2b7 100644 --- a/sequencer.c +++ b/sequencer.c @@ -943,24 +943,31 @@ fail: return -1; } -static void save_todo(struct commit_list *todo_list, struct replay_opts *opts) +static int save_todo(struct commit_list *todo_list, struct replay_opts *opts) { static struct lock_file todo_lock; struct strbuf buf = STRBUF_INIT; int fd; - fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), LOCK_DIE_ON_ERROR); - if (format_todo(&buf, todo_list, opts) < 0) - die(_("Could not format %s."), git_path_todo_file()); + fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), 0); + if (fd < 0) + return error_errno(_("Could not lock '%s'"), + git_path_todo_file()); + if (format_todo(&buf, todo_list, opts) < 0) { + strbuf_release(&buf); + return error(_("Could not format %s."), git_path_todo_file()); + } if (write_in_full(fd, buf.buf, buf.len) < 0) { strbuf_release(&buf); - die_errno(_("Could not write to %s"), git_path_todo_file()); + return error_errno(_("Could not write to %s"), + git_path_todo_file()); } if (commit_lock_file(&todo_lock) < 0) { strbuf_release(&buf); - die(_("Error wrapping up %s."), git_path_todo_file()); + return error(_("Error wrapping up %s."), git_path_todo_file()); } strbuf_release(&buf); + return 0; } static void save_opts(struct replay_opts *opts) @@ -1009,7 +1016,8 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) return -1; for (cur = todo_list; cur; cur = cur->next) { - save_todo(cur, opts); + if (save_todo(cur, opts)) + return -1; res = do_pick_commit(cur->item, opts); if (res) return res; From 134ac058e3e03c7ce585f1dd9f5bcc553eb2ce38 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 14/80] sequencer: lib'ify save_opts() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of save_opts(), sequencer_pick_revisions() can already return errors, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make save_opts() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/sequencer.c b/sequencer.c index 32c53bb2b7..021ddf36d0 100644 --- a/sequencer.c +++ b/sequencer.c @@ -970,37 +970,39 @@ static int save_todo(struct commit_list *todo_list, struct replay_opts *opts) return 0; } -static void save_opts(struct replay_opts *opts) +static int save_opts(struct replay_opts *opts) { const char *opts_file = git_path_opts_file(); + int res = 0; if (opts->no_commit) - git_config_set_in_file(opts_file, "options.no-commit", "true"); + res |= git_config_set_in_file_gently(opts_file, "options.no-commit", "true"); if (opts->edit) - git_config_set_in_file(opts_file, "options.edit", "true"); + res |= git_config_set_in_file_gently(opts_file, "options.edit", "true"); if (opts->signoff) - git_config_set_in_file(opts_file, "options.signoff", "true"); + res |= git_config_set_in_file_gently(opts_file, "options.signoff", "true"); if (opts->record_origin) - git_config_set_in_file(opts_file, "options.record-origin", "true"); + res |= git_config_set_in_file_gently(opts_file, "options.record-origin", "true"); if (opts->allow_ff) - git_config_set_in_file(opts_file, "options.allow-ff", "true"); + res |= git_config_set_in_file_gently(opts_file, "options.allow-ff", "true"); if (opts->mainline) { struct strbuf buf = STRBUF_INIT; strbuf_addf(&buf, "%d", opts->mainline); - git_config_set_in_file(opts_file, "options.mainline", buf.buf); + res |= git_config_set_in_file_gently(opts_file, "options.mainline", buf.buf); strbuf_release(&buf); } if (opts->strategy) - git_config_set_in_file(opts_file, "options.strategy", opts->strategy); + res |= git_config_set_in_file_gently(opts_file, "options.strategy", opts->strategy); if (opts->gpg_sign) - git_config_set_in_file(opts_file, "options.gpg-sign", opts->gpg_sign); + res |= git_config_set_in_file_gently(opts_file, "options.gpg-sign", opts->gpg_sign); if (opts->xopts) { int i; for (i = 0; i < opts->xopts_nr; i++) - git_config_set_multivar_in_file(opts_file, + res |= git_config_set_multivar_in_file_gently(opts_file, "options.strategy-option", opts->xopts[i], "^$", 0); } + return res; } static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) @@ -1147,7 +1149,8 @@ int sequencer_pick_revisions(struct replay_opts *opts) return error(_("Can't revert as initial commit")); if (save_head(sha1_to_hex(sha1))) return -1; - save_opts(opts); + if (save_opts(opts)) + return -1; return pick_commits(todo_list, opts); } From 85f4336ef088536fb3525a533c0487fd3d89604e Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 15/80] sequencer: lib'ify fast_forward_to() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only caller of fast_forward_to(), do_pick_commit() already checks the return value and passes it on to its callers, so its caller must be already prepared to handle error returns, and with this step, we make it notice an error return from this function. So this is a safe conversion to make fast_forward_to() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- sequencer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 021ddf36d0..d92a632f29 100644 --- a/sequencer.c +++ b/sequencer.c @@ -226,7 +226,7 @@ static int fast_forward_to(const unsigned char *to, const unsigned char *from, read_cache(); if (checkout_fast_forward(from, to, 1)) - exit(128); /* the callee should have complained already */ + return -1; /* the callee should have complained already */ strbuf_addf(&sb, _("%s: fast-forward"), action_name(opts)); From a995420fc3ea7bad204bdc8948572a2168ed15f1 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 15:32:18 +0100 Subject: [PATCH 16/80] lib'ify checkout_fast_forward_to() Instead of dying there, let the caller high up in the callchain notice the error and handle it (by dying, still). The only callers of checkout_fast_forward_to(), cmd_merge(), pull_into_void(), cmd_pull() and sequencer's fast_forward_to(), already check the return value and handle it appropriately. With this step, we make it notice an error return from this function. So this is a safe conversion to make checkout_fast_forward_to() callable from new callers that want it not to die, without changing the external behaviour of anything existing. Signed-off-by: Johannes Schindelin --- merge.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/merge.c b/merge.c index 5db7d56b90..23866c9165 100644 --- a/merge.c +++ b/merge.c @@ -57,7 +57,8 @@ int checkout_fast_forward(const unsigned char *head, refresh_cache(REFRESH_QUIET); - hold_locked_index(lock_file, 1); + if (hold_locked_index(lock_file, 0) < 0) + return -1; memset(&trees, 0, sizeof(trees)); memset(&opts, 0, sizeof(opts)); @@ -90,7 +91,9 @@ int checkout_fast_forward(const unsigned char *head, } if (unpack_trees(nr_trees, t, &opts)) return -1; - if (write_locked_index(&the_index, lock_file, COMMIT_LOCK)) - die(_("unable to write new index file")); + if (write_locked_index(&the_index, lock_file, COMMIT_LOCK)) { + rollback_lock_file(lock_file); + return error(_("unable to write new index file")); + } return 0; } From 1fefdf0ae75e9bdfe39f0d628839ee3958dfd7c7 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 30 Aug 2016 11:04:21 +0200 Subject: [PATCH 17/80] sequencer: ensure to release the lock when we could not read the index A future caller of read_and_refresh_cache() may want to do more than just print some helpful advice in case of failure. Suggested by Junio Hamano. Signed-off-by: Johannes Schindelin --- sequencer.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index d92a632f29..eec8a60d6b 100644 --- a/sequencer.c +++ b/sequencer.c @@ -644,14 +644,18 @@ static int read_and_refresh_cache(struct replay_opts *opts) { static struct lock_file index_lock; int index_fd = hold_locked_index(&index_lock, 0); - if (read_index_preload(&the_index, NULL) < 0) + if (read_index_preload(&the_index, NULL) < 0) { + rollback_lock_file(&index_lock); return error(_("git %s: failed to read the index"), action_name(opts)); + } refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL); if (the_index.cache_changed && index_fd >= 0) { - if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) + if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) { + rollback_lock_file(&index_lock); return error(_("git %s: failed to refresh the index"), action_name(opts)); + } } rollback_lock_file(&index_lock); return 0; From 4bb756f99c6eb6430be195607cbb6e02a279cf0e Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 10 Mar 2016 13:19:54 +0100 Subject: [PATCH 18/80] pull: drop confusing prefix parameter of die_on_unclean_work_tree() In cmd_pull(), when verifying that there are no changes preventing a rebasing pull, we diligently pass the prefix parameter to the die_on_unclean_work_tree() function which in turn diligently passes it to the has_unstaged_changes() and has_uncommitted_changes() functions. The casual reader might now be curious (as this developer was) whether that means that calling `git pull --rebase` in a subdirectory will ignore unstaged changes in other parts of the working directory. And be puzzled that `git pull --rebase` (correctly) complains about those changes outside of the current directory. The puzzle is easily resolved: while we take pains to pass around the prefix and even pass it to init_revisions(), the fact that no paths are passed to init_revisions() ensures that the prefix is simply ignored. That, combined with the fact that we will *always* want a *full* working directory check before running a rebasing pull, is reason enough to simply do away with the actual prefix parameter and to pass NULL instead, as if we were running this from the top-level working directory anyway. Signed-off-by: Johannes Schindelin --- builtin/pull.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/builtin/pull.c b/builtin/pull.c index 398aae16c0..d4bd6350f0 100644 --- a/builtin/pull.c +++ b/builtin/pull.c @@ -328,12 +328,12 @@ static int git_pull_config(const char *var, const char *value, void *cb) /** * Returns 1 if there are unstaged changes, 0 otherwise. */ -static int has_unstaged_changes(const char *prefix) +static int has_unstaged_changes(void) { struct rev_info rev_info; int result; - init_revisions(&rev_info, prefix); + init_revisions(&rev_info, NULL); DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); DIFF_OPT_SET(&rev_info.diffopt, QUICK); diff_setup_done(&rev_info.diffopt); @@ -344,7 +344,7 @@ static int has_unstaged_changes(const char *prefix) /** * Returns 1 if there are uncommitted changes, 0 otherwise. */ -static int has_uncommitted_changes(const char *prefix) +static int has_uncommitted_changes(void) { struct rev_info rev_info; int result; @@ -352,7 +352,7 @@ static int has_uncommitted_changes(const char *prefix) if (is_cache_unborn()) return 0; - init_revisions(&rev_info, prefix); + init_revisions(&rev_info, NULL); DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); DIFF_OPT_SET(&rev_info.diffopt, QUICK); add_head_to_pending(&rev_info); @@ -365,7 +365,7 @@ static int has_uncommitted_changes(const char *prefix) * If the work tree has unstaged or uncommitted changes, dies with the * appropriate message. */ -static void die_on_unclean_work_tree(const char *prefix) +static void die_on_unclean_work_tree(void) { struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file)); int do_die = 0; @@ -375,12 +375,12 @@ static void die_on_unclean_work_tree(const char *prefix) update_index_if_able(&the_index, lock_file); rollback_lock_file(lock_file); - if (has_unstaged_changes(prefix)) { + if (has_unstaged_changes()) { error(_("Cannot pull with rebase: You have unstaged changes.")); do_die = 1; } - if (has_uncommitted_changes(prefix)) { + if (has_uncommitted_changes()) { if (do_die) error(_("Additionally, your index contains uncommitted changes.")); else @@ -875,7 +875,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix) die(_("Updating an unborn branch with changes added to the index.")); if (!autostash) - die_on_unclean_work_tree(prefix); + die_on_unclean_work_tree(); if (get_rebase_fork_point(rebase_fork_point, repo, *refspecs)) hashclr(rebase_fork_point); From d8d010ad99ae1d348cce9ef6dc5fb867dfb034aa Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 10 Mar 2016 14:57:54 +0100 Subject: [PATCH 19/80] pull: make code more similar to the shell script again When converting the pull command to a builtin, the require_clean_work_tree() function was renamed and the pull-specific parts hard-coded. This makes it impossible to reuse the code, so let's modify the code to make it more similar to the original shell script again. Signed-off-by: Johannes Schindelin --- builtin/pull.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) diff --git a/builtin/pull.c b/builtin/pull.c index d4bd6350f0..4d1f9c8b17 100644 --- a/builtin/pull.c +++ b/builtin/pull.c @@ -365,10 +365,11 @@ static int has_uncommitted_changes(void) * If the work tree has unstaged or uncommitted changes, dies with the * appropriate message. */ -static void die_on_unclean_work_tree(void) +static int require_clean_work_tree(const char *action, const char *hint, + int gently) { struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file)); - int do_die = 0; + int err = 0; hold_locked_index(lock_file, 0); refresh_cache(REFRESH_QUIET); @@ -376,20 +377,26 @@ static void die_on_unclean_work_tree(void) rollback_lock_file(lock_file); if (has_unstaged_changes()) { - error(_("Cannot pull with rebase: You have unstaged changes.")); - do_die = 1; + error(_("Cannot %s: You have unstaged changes."), action); + err = 1; } if (has_uncommitted_changes()) { - if (do_die) + if (err) error(_("Additionally, your index contains uncommitted changes.")); else - error(_("Cannot pull with rebase: Your index contains uncommitted changes.")); - do_die = 1; + error(_("Cannot %s: Your index contains uncommitted changes."), action); + err = 1; } - if (do_die) - exit(1); + if (err) { + if (hint) + error("%s", hint); + if (!gently) + exit(err); + } + + return err; } /** @@ -875,7 +882,8 @@ int cmd_pull(int argc, const char **argv, const char *prefix) die(_("Updating an unborn branch with changes added to the index.")); if (!autostash) - die_on_unclean_work_tree(); + require_clean_work_tree("pull with rebase", + "Please commit or stash them.", 0); if (get_rebase_fork_point(rebase_fork_point, repo, *refspecs)) hashclr(rebase_fork_point); From f88843dc67109b550791623472fe2efa9878efb6 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 8 Feb 2016 17:16:19 +0100 Subject: [PATCH 20/80] sequencer: use static initializers for replay_opts This change is not completely faithful: instead of initializing all fields to 0, we choose to initialize command and subcommand to -1 (instead of defaulting to REPLAY_REVERT and REPLAY_NONE, respectively). Practically, it makes no difference at all, but future-proofs the code to require explicit assignments for both fields. Signed-off-by: Johannes Schindelin --- builtin/revert.c | 6 ++---- sequencer.h | 1 + 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/builtin/revert.c b/builtin/revert.c index 4e693808b1..7365559c97 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -178,10 +178,9 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) int cmd_revert(int argc, const char **argv, const char *prefix) { - struct replay_opts opts; + struct replay_opts opts = REPLAY_OPTS_INIT; int res; - memset(&opts, 0, sizeof(opts)); if (isatty(0)) opts.edit = 1; opts.action = REPLAY_REVERT; @@ -195,10 +194,9 @@ int cmd_revert(int argc, const char **argv, const char *prefix) int cmd_cherry_pick(int argc, const char **argv, const char *prefix) { - struct replay_opts opts; + struct replay_opts opts = REPLAY_OPTS_INIT; int res; - memset(&opts, 0, sizeof(opts)); opts.action = REPLAY_PICK; git_config(git_default_config, NULL); parse_args(argc, argv, &opts); diff --git a/sequencer.h b/sequencer.h index 5ed5cb1d97..db425ad1a6 100644 --- a/sequencer.h +++ b/sequencer.h @@ -47,6 +47,7 @@ struct replay_opts { /* Only used by REPLAY_NONE */ struct rev_info *revs; }; +#define REPLAY_OPTS_INIT { -1, -1 } int sequencer_pick_revisions(struct replay_opts *opts); From 12c64d2fb5c8a0d5fda09a0bf479916cdd63282f Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 9 Feb 2016 14:09:05 +0100 Subject: [PATCH 21/80] sequencer: use memoized sequencer directory path Signed-off-by: Johannes Schindelin --- builtin/commit.c | 2 +- sequencer.c | 11 ++++++----- sequencer.h | 5 +---- 3 files changed, 8 insertions(+), 10 deletions(-) diff --git a/builtin/commit.c b/builtin/commit.c index 77e3dc8494..022119031a 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -173,7 +173,7 @@ static void determine_whence(struct wt_status *s) whence = FROM_MERGE; else if (file_exists(git_path_cherry_pick_head())) { whence = FROM_CHERRY_PICK; - if (file_exists(git_path(SEQ_DIR))) + if (file_exists(git_path_seq_dir())) sequencer_in_use = 1; } else diff --git a/sequencer.c b/sequencer.c index eec8a60d6b..cb16cbda35 100644 --- a/sequencer.c +++ b/sequencer.c @@ -21,10 +21,11 @@ const char sign_off_header[] = "Signed-off-by: "; static const char cherry_picked_prefix[] = "(cherry picked from commit "; -static GIT_PATH_FUNC(git_path_todo_file, SEQ_TODO_FILE) -static GIT_PATH_FUNC(git_path_opts_file, SEQ_OPTS_FILE) -static GIT_PATH_FUNC(git_path_seq_dir, SEQ_DIR) -static GIT_PATH_FUNC(git_path_head_file, SEQ_HEAD_FILE) +GIT_PATH_FUNC(git_path_seq_dir, "sequencer") + +static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo") +static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") +static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") static int is_rfc2822_line(const char *buf, int len) { @@ -112,7 +113,7 @@ static void remove_sequencer_state(void) { struct strbuf seq_dir = STRBUF_INIT; - strbuf_addstr(&seq_dir, git_path(SEQ_DIR)); + strbuf_addstr(&seq_dir, git_path_seq_dir()); remove_dir_recursively(&seq_dir, 0); strbuf_release(&seq_dir); } diff --git a/sequencer.h b/sequencer.h index db425ad1a6..dd4d33a572 100644 --- a/sequencer.h +++ b/sequencer.h @@ -1,10 +1,7 @@ #ifndef SEQUENCER_H #define SEQUENCER_H -#define SEQ_DIR "sequencer" -#define SEQ_HEAD_FILE "sequencer/head" -#define SEQ_TODO_FILE "sequencer/todo" -#define SEQ_OPTS_FILE "sequencer/opts" +const char *git_path_seq_dir(void); #define APPEND_SIGNOFF_DEDUP (1u << 0) From fb1c6fc4a323ae31a12140bc5227a6f254810324 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 9 Feb 2016 14:23:55 +0100 Subject: [PATCH 22/80] sequencer: avoid unnecessary indirection We really do not need the *pointer to a* pointer to the options in the read_populate_opts() function. Signed-off-by: Johannes Schindelin --- sequencer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index cb16cbda35..c2fbf6f89c 100644 --- a/sequencer.c +++ b/sequencer.c @@ -813,7 +813,7 @@ static int populate_opts_cb(const char *key, const char *value, void *data) return 0; } -static int read_populate_opts(struct replay_opts **opts) +static int read_populate_opts(struct replay_opts *opts) { if (!file_exists(git_path_opts_file())) return 0; @@ -823,7 +823,7 @@ static int read_populate_opts(struct replay_opts **opts) * about this case, though, because we wrote that file ourselves, so we * are pretty certain that it is syntactically correct. */ - if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts) < 0) + if (git_config_from_file(populate_opts_cb, git_path_opts_file(), opts) < 0) return error(_("Malformed options sheet: %s"), git_path_opts_file()); return 0; @@ -1054,7 +1054,7 @@ static int sequencer_continue(struct replay_opts *opts) if (!file_exists(git_path_todo_file())) return continue_single_pick(); - if (read_populate_opts(&opts) || + if (read_populate_opts(opts) || read_populate_todo(&todo_list, opts)) return -1; From 3142bd5dc393964a9014f127d0cb9e399dc35e28 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 9 Feb 2016 16:06:35 +0100 Subject: [PATCH 23/80] sequencer: future-proof remove_sequencer_state() In a couple of commits, we will teach the sequencer to handle the nitty gritty of the interactive rebase, which keeps its state in a different directory. Signed-off-by: Johannes Schindelin --- sequencer.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/sequencer.c b/sequencer.c index c2fbf6f89c..8d272fbdca 100644 --- a/sequencer.c +++ b/sequencer.c @@ -27,6 +27,11 @@ static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo") static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") +static const char *get_dir(const struct replay_opts *opts) +{ + return git_path_seq_dir(); +} + static int is_rfc2822_line(const char *buf, int len) { int i; @@ -109,13 +114,13 @@ static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob, return 1; } -static void remove_sequencer_state(void) +static void remove_sequencer_state(const struct replay_opts *opts) { - struct strbuf seq_dir = STRBUF_INIT; + struct strbuf dir = STRBUF_INIT; - strbuf_addstr(&seq_dir, git_path_seq_dir()); - remove_dir_recursively(&seq_dir, 0); - strbuf_release(&seq_dir); + strbuf_addf(&dir, "%s", get_dir(opts)); + remove_dir_recursively(&dir, 0); + strbuf_release(&dir); } static const char *action_name(const struct replay_opts *opts) @@ -940,7 +945,7 @@ static int sequencer_rollback(struct replay_opts *opts) } if (reset_for_rollback(sha1)) goto fail; - remove_sequencer_state(); + remove_sequencer_state(opts); strbuf_release(&buf); return 0; fail: @@ -1034,7 +1039,7 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) * Sequence of picks finished successfully; cleanup by * removing the .git/sequencer directory */ - remove_sequencer_state(); + remove_sequencer_state(opts); return 0; } @@ -1095,7 +1100,7 @@ int sequencer_pick_revisions(struct replay_opts *opts) * one that is being continued */ if (opts->subcommand == REPLAY_REMOVE_STATE) { - remove_sequencer_state(); + remove_sequencer_state(opts); return 0; } if (opts->subcommand == REPLAY_ROLLBACK) From 7754ff41f2068b59f17e030cf0c26d4f79f81f74 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 25 Feb 2016 13:46:53 +0100 Subject: [PATCH 24/80] Make the require_clean_work_tree() function truly reusable It is remarkable that libgit.a did not sport this function yet... Let's move it into a more prominent (and into an actually reusable) spot: wt-status.[ch]. Signed-off-by: Johannes Schindelin --- builtin/pull.c | 75 +------------------------------------------------- wt-status.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++ wt-status.h | 3 ++ 3 files changed, 78 insertions(+), 74 deletions(-) diff --git a/builtin/pull.c b/builtin/pull.c index 4d1f9c8b17..c35c6e82c0 100644 --- a/builtin/pull.c +++ b/builtin/pull.c @@ -17,6 +17,7 @@ #include "revision.h" #include "tempfile.h" #include "lockfile.h" +#include "wt-status.h" enum rebase_type { REBASE_INVALID = -1, @@ -325,80 +326,6 @@ static int git_pull_config(const char *var, const char *value, void *cb) return git_default_config(var, value, cb); } -/** - * Returns 1 if there are unstaged changes, 0 otherwise. - */ -static int has_unstaged_changes(void) -{ - struct rev_info rev_info; - int result; - - init_revisions(&rev_info, NULL); - DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); - DIFF_OPT_SET(&rev_info.diffopt, QUICK); - diff_setup_done(&rev_info.diffopt); - result = run_diff_files(&rev_info, 0); - return diff_result_code(&rev_info.diffopt, result); -} - -/** - * Returns 1 if there are uncommitted changes, 0 otherwise. - */ -static int has_uncommitted_changes(void) -{ - struct rev_info rev_info; - int result; - - if (is_cache_unborn()) - return 0; - - init_revisions(&rev_info, NULL); - DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); - DIFF_OPT_SET(&rev_info.diffopt, QUICK); - add_head_to_pending(&rev_info); - diff_setup_done(&rev_info.diffopt); - result = run_diff_index(&rev_info, 1); - return diff_result_code(&rev_info.diffopt, result); -} - -/** - * If the work tree has unstaged or uncommitted changes, dies with the - * appropriate message. - */ -static int require_clean_work_tree(const char *action, const char *hint, - int gently) -{ - struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file)); - int err = 0; - - hold_locked_index(lock_file, 0); - refresh_cache(REFRESH_QUIET); - update_index_if_able(&the_index, lock_file); - rollback_lock_file(lock_file); - - if (has_unstaged_changes()) { - error(_("Cannot %s: You have unstaged changes."), action); - err = 1; - } - - if (has_uncommitted_changes()) { - if (err) - error(_("Additionally, your index contains uncommitted changes.")); - else - error(_("Cannot %s: Your index contains uncommitted changes."), action); - err = 1; - } - - if (err) { - if (hint) - error("%s", hint); - if (!gently) - exit(err); - } - - return err; -} - /** * Appends merge candidates from FETCH_HEAD that are not marked not-for-merge * into merge_heads. diff --git a/wt-status.c b/wt-status.c index 6225a2d89f..792dda98fb 100644 --- a/wt-status.c +++ b/wt-status.c @@ -16,6 +16,7 @@ #include "strbuf.h" #include "utf8.h" #include "worktree.h" +#include "lockfile.h" static const char cut_line[] = "------------------------ >8 ------------------------\n"; @@ -1757,3 +1758,76 @@ void wt_porcelain_print(struct wt_status *s) s->no_gettext = 1; wt_shortstatus_print(s); } + +/** + * Returns 1 if there are unstaged changes, 0 otherwise. + */ +static int has_unstaged_changes(void) +{ + struct rev_info rev_info; + int result; + + init_revisions(&rev_info, NULL); + DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); + DIFF_OPT_SET(&rev_info.diffopt, QUICK); + diff_setup_done(&rev_info.diffopt); + result = run_diff_files(&rev_info, 0); + return diff_result_code(&rev_info.diffopt, result); +} + +/** + * Returns 1 if there are uncommitted changes, 0 otherwise. + */ +static int has_uncommitted_changes(void) +{ + struct rev_info rev_info; + int result; + + if (is_cache_unborn()) + return 0; + + init_revisions(&rev_info, NULL); + DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); + DIFF_OPT_SET(&rev_info.diffopt, QUICK); + add_head_to_pending(&rev_info); + diff_setup_done(&rev_info.diffopt); + result = run_diff_index(&rev_info, 1); + return diff_result_code(&rev_info.diffopt, result); +} + +/** + * If the work tree has unstaged or uncommitted changes, dies with the + * appropriate message. + */ +int require_clean_work_tree(const char *action, const char *hint, int gently) +{ + struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file)); + int err = 0; + + hold_locked_index(lock_file, 0); + refresh_cache(REFRESH_QUIET); + update_index_if_able(&the_index, lock_file); + rollback_lock_file(lock_file); + + if (has_unstaged_changes()) { + error(_("Cannot %s: You have unstaged changes."), action); + err = 1; + } + + if (has_uncommitted_changes()) { + if (err) + error(_("Additionally, your index contains uncommitted changes.")); + else + error(_("Cannot %s: Your index contains uncommitted changes."), action); + err = 1; + } + + if (err) { + if (hint) + error("%s", hint); + if (!gently) + exit(err); + } + + return err; +} diff --git a/wt-status.h b/wt-status.h index 2ca93f6957..35c7448e70 100644 --- a/wt-status.h +++ b/wt-status.h @@ -115,4 +115,7 @@ void status_printf_ln(struct wt_status *s, const char *color, const char *fmt, . __attribute__((format (printf, 3, 4))) void status_printf(struct wt_status *s, const char *color, const char *fmt, ...); +/* The following function expect that the caller took care of reading the index. */ +int require_clean_work_tree(const char *action, const char *hint, int gently); + #endif /* STATUS_H */ From 8a2973bd4b61740da3a479e807b51774f8c37212 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 10 Mar 2016 15:03:03 +0100 Subject: [PATCH 25/80] Export also the has_un{staged,committed}_changed() functions They will be used in the upcoming rebase helper. Signed-off-by: Johannes Schindelin --- wt-status.c | 4 ++-- wt-status.h | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/wt-status.c b/wt-status.c index 792dda98fb..436d02791c 100644 --- a/wt-status.c +++ b/wt-status.c @@ -1762,7 +1762,7 @@ void wt_porcelain_print(struct wt_status *s) /** * Returns 1 if there are unstaged changes, 0 otherwise. */ -static int has_unstaged_changes(void) +int has_unstaged_changes(void) { struct rev_info rev_info; int result; @@ -1778,7 +1778,7 @@ static int has_unstaged_changes(void) /** * Returns 1 if there are uncommitted changes, 0 otherwise. */ -static int has_uncommitted_changes(void) +int has_uncommitted_changes(void) { struct rev_info rev_info; int result; diff --git a/wt-status.h b/wt-status.h index 35c7448e70..f8791d6425 100644 --- a/wt-status.h +++ b/wt-status.h @@ -115,7 +115,9 @@ void status_printf_ln(struct wt_status *s, const char *color, const char *fmt, . __attribute__((format (printf, 3, 4))) void status_printf(struct wt_status *s, const char *color, const char *fmt, ...); -/* The following function expect that the caller took care of reading the index. */ +/* The following functions expect that the caller took care of reading the index. */ +int has_unstaged_changes(void); +int has_uncommitted_changes(void); int require_clean_work_tree(const char *action, const char *hint, int gently); #endif /* STATUS_H */ From c40fcd295a3884b2a83140ccc7634e69a95269e2 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Sat, 9 Apr 2016 15:04:01 +0200 Subject: [PATCH 26/80] wt-status: teach has_{unstaged,uncommitted}_changes() about submodules Sometimes we are *actually* interested in those changes... For example when an interactive rebase wants to continue with a staged submodule update. Signed-off-by: Johannes Schindelin --- builtin/pull.c | 2 +- wt-status.c | 16 +++++++++------- wt-status.h | 7 ++++--- 3 files changed, 14 insertions(+), 11 deletions(-) diff --git a/builtin/pull.c b/builtin/pull.c index c35c6e82c0..843ff1976d 100644 --- a/builtin/pull.c +++ b/builtin/pull.c @@ -810,7 +810,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix) if (!autostash) require_clean_work_tree("pull with rebase", - "Please commit or stash them.", 0); + "Please commit or stash them.", 1, 0); if (get_rebase_fork_point(rebase_fork_point, repo, *refspecs)) hashclr(rebase_fork_point); diff --git a/wt-status.c b/wt-status.c index 436d02791c..d0ddfb5eef 100644 --- a/wt-status.c +++ b/wt-status.c @@ -1762,13 +1762,14 @@ void wt_porcelain_print(struct wt_status *s) /** * Returns 1 if there are unstaged changes, 0 otherwise. */ -int has_unstaged_changes(void) +int has_unstaged_changes(int ignore_submodules) { struct rev_info rev_info; int result; init_revisions(&rev_info, NULL); - DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); + if (ignore_submodules) + DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); DIFF_OPT_SET(&rev_info.diffopt, QUICK); diff_setup_done(&rev_info.diffopt); result = run_diff_files(&rev_info, 0); @@ -1778,7 +1779,7 @@ int has_unstaged_changes(void) /** * Returns 1 if there are uncommitted changes, 0 otherwise. */ -int has_uncommitted_changes(void) +int has_uncommitted_changes(int ignore_submodules) { struct rev_info rev_info; int result; @@ -1787,7 +1788,8 @@ int has_uncommitted_changes(void) return 0; init_revisions(&rev_info, NULL); - DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); + if (ignore_submodules) + DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES); DIFF_OPT_SET(&rev_info.diffopt, QUICK); add_head_to_pending(&rev_info); diff_setup_done(&rev_info.diffopt); @@ -1799,7 +1801,7 @@ int has_uncommitted_changes(void) * If the work tree has unstaged or uncommitted changes, dies with the * appropriate message. */ -int require_clean_work_tree(const char *action, const char *hint, int gently) +int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently) { struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file)); int err = 0; @@ -1809,12 +1811,12 @@ int require_clean_work_tree(const char *action, const char *hint, int gently) update_index_if_able(&the_index, lock_file); rollback_lock_file(lock_file); - if (has_unstaged_changes()) { + if (has_unstaged_changes(ignore_submodules)) { error(_("Cannot %s: You have unstaged changes."), action); err = 1; } - if (has_uncommitted_changes()) { + if (has_uncommitted_changes(ignore_submodules)) { if (err) error(_("Additionally, your index contains uncommitted changes.")); else diff --git a/wt-status.h b/wt-status.h index f8791d6425..3045b1dd12 100644 --- a/wt-status.h +++ b/wt-status.h @@ -116,8 +116,9 @@ __attribute__((format (printf, 3, 4))) void status_printf(struct wt_status *s, const char *color, const char *fmt, ...); /* The following functions expect that the caller took care of reading the index. */ -int has_unstaged_changes(void); -int has_uncommitted_changes(void); -int require_clean_work_tree(const char *action, const char *hint, int gently); +int has_unstaged_changes(int ignore_submodules); +int has_uncommitted_changes(int ignore_submodules); +int require_clean_work_tree(const char *action, const char *hint, + int ignore_submodules, int gently); #endif /* STATUS_H */ From 547ac9d2de047004d83f7799d72c4bd1a87c0ed2 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 9 Jun 2016 09:43:42 +0200 Subject: [PATCH 27/80] sequencer: allow the sequencer to take custody of malloc()ed data The sequencer is our attempt to lib-ify cherry-pick. Yet it behaves like a one-shot command when it reads its configuration: memory is allocated and released only when the command exits. This is kind of okay for git-cherry-pick, which *is* a one-shot command. All the work to make the sequencer its work horse was done to allow using the functionality as a library function, though, including proper clean-up after use. This patch introduces an API to pass the responsibility of releasing certain memory to the sequencer. Example: const char *label = sequencer_entrust(opts, xstrfmt("From: %s", email)); The entrusted memory will remain valid until sequencer_remove_state() is called, or the program exits, whichever comes first. Signed-off-by: Johannes Schindelin --- sequencer.c | 13 +++++++++++++ sequencer.h | 10 ++++++++++ 2 files changed, 23 insertions(+) diff --git a/sequencer.c b/sequencer.c index 8d272fbdca..8d56a05277 100644 --- a/sequencer.c +++ b/sequencer.c @@ -114,9 +114,22 @@ static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob, return 1; } +void *sequencer_entrust(struct replay_opts *opts, void *to_free) +{ + ALLOC_GROW(opts->owned, opts->owned_nr + 1, opts->owned_alloc); + opts->owned[opts->owned_nr++] = to_free; + + return to_free; +} + static void remove_sequencer_state(const struct replay_opts *opts) { struct strbuf dir = STRBUF_INIT; + int i; + + for (i = 0; i < opts->owned_nr; i++) + free(opts->owned[i]); + free(opts->owned); strbuf_addf(&dir, "%s", get_dir(opts)); remove_dir_recursively(&dir, 0); diff --git a/sequencer.h b/sequencer.h index dd4d33a572..04892a9c20 100644 --- a/sequencer.h +++ b/sequencer.h @@ -43,9 +43,19 @@ struct replay_opts { /* Only used by REPLAY_NONE */ struct rev_info *revs; + + /* malloc()ed data entrusted to the sequencer */ + void **owned; + int owned_nr, owned_alloc; }; #define REPLAY_OPTS_INIT { -1, -1 } +/* + * Make it the duty of sequencer_remove_state() to release the memory; + * For ease of use, return the same pointer. + */ +void *sequencer_entrust(struct replay_opts *opts, void *to_free); + int sequencer_pick_revisions(struct replay_opts *opts); extern const char sign_off_header[]; From ccf182fe051d3d0145a240df3a1988033f2e902a Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 9 Jun 2016 09:59:52 +0200 Subject: [PATCH 28/80] sequencer: release memory that was allocated when reading options The sequencer reads options from disk and stores them in its struct for use during sequencer's operations. With this patch, the memory is released afterwards, plugging a memory leak. Signed-off-by: Johannes Schindelin --- sequencer.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index 8d56a05277..3ca231f8f3 100644 --- a/sequencer.c +++ b/sequencer.c @@ -131,6 +131,8 @@ static void remove_sequencer_state(const struct replay_opts *opts) free(opts->owned[i]); free(opts->owned); + free(opts->xopts); + strbuf_addf(&dir, "%s", get_dir(opts)); remove_dir_recursively(&dir, 0); strbuf_release(&dir); @@ -815,13 +817,18 @@ static int populate_opts_cb(const char *key, const char *value, void *data) opts->allow_ff = git_config_bool_or_int(key, value, &error_flag); else if (!strcmp(key, "options.mainline")) opts->mainline = git_config_int(key, value); - else if (!strcmp(key, "options.strategy")) + else if (!strcmp(key, "options.strategy")) { git_config_string(&opts->strategy, key, value); - else if (!strcmp(key, "options.gpg-sign")) + sequencer_entrust(opts, (char *) opts->strategy); + } + else if (!strcmp(key, "options.gpg-sign")) { git_config_string(&opts->gpg_sign, key, value); + sequencer_entrust(opts, (char *) opts->gpg_sign); + } else if (!strcmp(key, "options.strategy-option")) { ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc); - opts->xopts[opts->xopts_nr++] = xstrdup(value); + opts->xopts[opts->xopts_nr++] = + sequencer_entrust(opts, xstrdup(value)); } else return error(_("Invalid key: %s"), key); From 8450d186b550d3bd5c8a402ed5885cb948ff68c3 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Sat, 13 Feb 2016 14:31:00 +0100 Subject: [PATCH 29/80] sequencer: future-proof read_populate_todo() Over the next commits, we will work on improving the sequencer to the point where it can process the edit script of an interactive rebase. To that end, we will need to teach the sequencer to read interactive rebase's todo file. In preparation, we consolidate all places where that todo file is needed to call a function that we will later extend. Signed-off-by: Johannes Schindelin --- sequencer.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/sequencer.c b/sequencer.c index 3ca231f8f3..da6de229e7 100644 --- a/sequencer.c +++ b/sequencer.c @@ -32,6 +32,11 @@ static const char *get_dir(const struct replay_opts *opts) return git_path_seq_dir(); } +static const char *get_todo_path(const struct replay_opts *opts) +{ + return git_path_todo_file(); +} + static int is_rfc2822_line(const char *buf, int len) { int i; @@ -776,25 +781,24 @@ static int parse_insn_buffer(char *buf, struct commit_list **todo_list, static int read_populate_todo(struct commit_list **todo_list, struct replay_opts *opts) { + const char *todo_file = get_todo_path(opts); struct strbuf buf = STRBUF_INIT; int fd, res; - fd = open(git_path_todo_file(), O_RDONLY); + fd = open(todo_file, O_RDONLY); if (fd < 0) - return error_errno(_("Could not open %s"), - git_path_todo_file()); + return error_errno(_("Could not open %s"), todo_file); if (strbuf_read(&buf, fd, 0) < 0) { close(fd); strbuf_release(&buf); - return error(_("Could not read %s."), git_path_todo_file()); + return error(_("Could not read %s."), todo_file); } close(fd); res = parse_insn_buffer(buf.buf, todo_list, opts); strbuf_release(&buf); if (res) - return error(_("Unusable instruction sheet: %s"), - git_path_todo_file()); + return error(_("Unusable instruction sheet: %s"), todo_file); return 0; } @@ -1077,7 +1081,7 @@ static int sequencer_continue(struct replay_opts *opts) { struct commit_list *todo_list = NULL; - if (!file_exists(git_path_todo_file())) + if (!file_exists(get_todo_path(opts))) return continue_single_pick(); if (read_populate_opts(opts) || read_populate_todo(&todo_list, opts)) From dd40d1f7b15a693cbf0d941677ef8bae70ccac4b Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 23 Feb 2016 19:21:31 +0100 Subject: [PATCH 30/80] sequencer: remove overzealous assumption The sequencer was introduced to make the cherry-pick and revert functionality available as library function, with the original idea being to extend the sequencer to also implement the rebase -i functionality. The test to ensure that all of the commands in the script are identical to the overall operation does not mesh well with that. Therefore let's just get rid of the test that wants to verify that this limitation is still in place, in preparation for the upcoming work to teach the sequencer to do rebase -i's work. Signed-off-by: Johannes Schindelin --- t/t3510-cherry-pick-sequence.sh | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh index 7b7a89dbd5..6465edf989 100755 --- a/t/t3510-cherry-pick-sequence.sh +++ b/t/t3510-cherry-pick-sequence.sh @@ -459,17 +459,6 @@ test_expect_success 'malformed instruction sheet 1' ' test_expect_code 128 git cherry-pick --continue ' -test_expect_success 'malformed instruction sheet 2' ' - pristine_detach initial && - test_expect_code 1 git cherry-pick base..anotherpick && - echo "resolved" >foo && - git add foo && - git commit && - sed "s/pick/revert/" .git/sequencer/todo >new_sheet && - cp new_sheet .git/sequencer/todo && - test_expect_code 128 git cherry-pick --continue -' - test_expect_success 'empty commit set' ' pristine_detach initial && test_expect_code 128 git cherry-pick base..base From 608a13e436fa2ff9c1d983b3acd7314d585d7cf2 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 23 Feb 2016 19:21:31 +0100 Subject: [PATCH 31/80] sequencer: completely revamp the "todo" script parsing When we came up with the "sequencer" idea, we really wanted to have kind of a plumbing equivalent of the interactive rebase. Hence the choice of words: the "todo" script, a "pick", etc. However, when it came time to implement the entire shebang, somehow this idea got lost and the sequencer was used as working horse for cherry-pick and revert instead. So as not to interfere with the interactive rebase, it even uses a separate directory to store its state. Furthermore, it also is stupidly strict about the "todo" script it accepts: while it parses commands in a way that was *designed* to be similar to the interactive rebase, it then goes on to *error out* if the commands disagree with the overall action (cherry-pick or revert). Finally, the sequencer code chose to deviate from the interactive rebase code insofar that it *reformats* the "todo" script instead of just writing the part of the parsed script that were not yet processed. This is not only unnecessary churn, but might well lose information that is valuable to the user (i.e. comments after the commands). Let's just bite the bullet and rewrite the entire parser; the code now becomes not only more elegant: it allows us to go on and teach the sequencer how to parse *true* "todo" scripts as used by the interactive rebase itself. In a way, the sequencer is about to grow up to do its older brother's job. Better. While at it, do not stop at the first problem, but list *all* of the problems. This helps the user by allowing to address all issues in one go rather than going back and forth until the todo list is valid. Signed-off-by: Johannes Schindelin --- sequencer.c | 241 +++++++++++++++++++++++++++++----------------------- 1 file changed, 134 insertions(+), 107 deletions(-) diff --git a/sequencer.c b/sequencer.c index da6de229e7..cb4b424bd9 100644 --- a/sequencer.c +++ b/sequencer.c @@ -473,7 +473,26 @@ static int allow_empty(struct replay_opts *opts, struct commit *commit) return 1; } -static int do_pick_commit(struct commit *commit, struct replay_opts *opts) +enum todo_command { + TODO_PICK, + TODO_REVERT +}; + +static const char *todo_command_strings[] = { + "pick", + "revert" +}; + +static const char *command_to_string(const enum todo_command command) +{ + if (command < ARRAY_SIZE(todo_command_strings)) + return todo_command_strings[command]; + die("Unknown command: %d", command); +} + + +static int do_pick_commit(enum todo_command command, struct commit *commit, + struct replay_opts *opts) { unsigned char head[20]; struct commit *base, *next, *parent; @@ -535,7 +554,8 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) /* TRANSLATORS: The first %s will be "revert" or "cherry-pick", the second %s a SHA1 */ return error(_("%s: cannot parse parent commit %s"), - action_name(opts), oid_to_hex(&parent->object.oid)); + command_to_string(command), + oid_to_hex(&parent->object.oid)); if (get_message(commit, &msg) != 0) return error(_("Cannot get commit message for %s"), @@ -548,7 +568,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) * reverse of it if we are revert. */ - if (opts->action == REPLAY_REVERT) { + if (command == TODO_REVERT) { base = commit; base_label = msg.label; next = parent; @@ -589,7 +609,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) } } - if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REPLAY_REVERT) { + if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { res = do_recursive_merge(base, next, base_label, next_label, head, &msgbuf, opts); if (res < 0) @@ -615,17 +635,17 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) * However, if the merge did not even start, then we don't want to * write it at all. */ - if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1) && + if (command == TODO_PICK && !opts->no_commit && (res == 0 || res == 1) && update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL, REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) res = -1; - if (opts->action == REPLAY_REVERT && ((opts->no_commit && res == 0) || res == 1) && + if (command == TODO_REVERT && ((opts->no_commit && res == 0) || res == 1) && update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL, REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) res = -1; if (res) { - error(opts->action == REPLAY_REVERT + error(command == TODO_REVERT ? _("could not revert %s... %s") : _("could not apply %s... %s"), find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV), @@ -687,116 +707,107 @@ static int read_and_refresh_cache(struct replay_opts *opts) return 0; } -static int format_todo(struct strbuf *buf, struct commit_list *todo_list, - struct replay_opts *opts) -{ - struct commit_list *cur = NULL; - const char *sha1_abbrev = NULL; - const char *action_str = opts->action == REPLAY_REVERT ? "revert" : "pick"; - const char *subject; - int subject_len; +struct todo_item { + enum todo_command command; + struct commit *commit; + size_t offset_in_buf; +}; - for (cur = todo_list; cur; cur = cur->next) { - const char *commit_buffer = get_commit_buffer(cur->item, NULL); - sha1_abbrev = find_unique_abbrev(cur->item->object.oid.hash, DEFAULT_ABBREV); - subject_len = find_commit_subject(commit_buffer, &subject); - strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev, - subject_len, subject); - unuse_commit_buffer(cur->item, commit_buffer); - } - return 0; +struct todo_list { + struct strbuf buf; + struct todo_item *items; + int nr, alloc, current; +}; + +#define TODO_LIST_INIT { STRBUF_INIT } + +static void todo_list_release(struct todo_list *todo_list) +{ + strbuf_release(&todo_list->buf); + free(todo_list->items); + todo_list->items = NULL; + todo_list->nr = todo_list->alloc = 0; } -static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts) +struct todo_item *append_todo(struct todo_list *todo_list) +{ + ALLOC_GROW(todo_list->items, todo_list->nr + 1, todo_list->alloc); + return todo_list->items + todo_list->nr++; +} + +static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) { unsigned char commit_sha1[20]; - enum replay_action action; char *end_of_object_name; - int saved, status, padding; + int i, saved, status, padding; - if (starts_with(bol, "pick")) { - action = REPLAY_PICK; - bol += strlen("pick"); - } else if (starts_with(bol, "revert")) { - action = REPLAY_REVERT; - bol += strlen("revert"); - } else - return NULL; + for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++) + if (skip_prefix(bol, todo_command_strings[i], &bol)) { + item->command = i; + break; + } + if (i >= ARRAY_SIZE(todo_command_strings)) + return -1; /* Eat up extra spaces/ tabs before object name */ padding = strspn(bol, " \t"); if (!padding) - return NULL; + return -1; bol += padding; - end_of_object_name = bol + strcspn(bol, " \t\n"); + end_of_object_name = (char *) bol + strcspn(bol, " \t\n"); saved = *end_of_object_name; *end_of_object_name = '\0'; status = get_sha1(bol, commit_sha1); *end_of_object_name = saved; - /* - * Verify that the action matches up with the one in - * opts; we don't support arbitrary instructions - */ - if (action != opts->action) { - if (action == REPLAY_REVERT) - error((opts->action == REPLAY_REVERT) - ? _("Cannot revert during another revert.") - : _("Cannot revert during a cherry-pick.")); - else - error((opts->action == REPLAY_REVERT) - ? _("Cannot cherry-pick during a revert.") - : _("Cannot cherry-pick during another cherry-pick.")); - return NULL; - } - if (status < 0) - return NULL; + return -1; - return lookup_commit_reference(commit_sha1); + item->commit = lookup_commit_reference(commit_sha1); + return !item->commit; } -static int parse_insn_buffer(char *buf, struct commit_list **todo_list, - struct replay_opts *opts) +static int parse_insn_buffer(char *buf, struct todo_list *todo_list) { - struct commit_list **next = todo_list; - struct commit *commit; + struct todo_item *item; char *p = buf; - int i; + int i, res = 0; for (i = 1; *p; i++) { char *eol = strchrnul(p, '\n'); - commit = parse_insn_line(p, eol, opts); - if (!commit) - return error(_("Could not parse line %d."), i); - next = commit_list_append(commit, next); + + item = append_todo(todo_list); + item->offset_in_buf = p - todo_list->buf.buf; + if (parse_insn_line(item, p, eol)) { + res |= error("Invalid line %d: %.*s", + i, (int)(eol - p), p); + item->command = -1; + } p = *eol ? eol + 1 : eol; } - if (!*todo_list) + if (!todo_list->nr) return error(_("No commits parsed.")); - return 0; + return res; } -static int read_populate_todo(struct commit_list **todo_list, +static int read_populate_todo(struct todo_list *todo_list, struct replay_opts *opts) { const char *todo_file = get_todo_path(opts); - struct strbuf buf = STRBUF_INIT; int fd, res; + strbuf_reset(&todo_list->buf); fd = open(todo_file, O_RDONLY); if (fd < 0) return error_errno(_("Could not open %s"), todo_file); - if (strbuf_read(&buf, fd, 0) < 0) { + if (strbuf_read(&todo_list->buf, fd, 0) < 0) { close(fd); - strbuf_release(&buf); return error(_("Could not read %s."), todo_file); } close(fd); - res = parse_insn_buffer(buf.buf, todo_list, opts); - strbuf_release(&buf); + res = parse_insn_buffer(todo_list->buf.buf, todo_list); if (res) return error(_("Unusable instruction sheet: %s"), todo_file); return 0; @@ -858,18 +869,33 @@ static int read_populate_opts(struct replay_opts *opts) return 0; } -static int walk_revs_populate_todo(struct commit_list **todo_list, +static int walk_revs_populate_todo(struct todo_list *todo_list, struct replay_opts *opts) { + enum todo_command command = opts->action == REPLAY_PICK ? + TODO_PICK : TODO_REVERT; struct commit *commit; - struct commit_list **next; if (prepare_revs(opts)) return -1; - next = todo_list; - while ((commit = get_revision(opts->revs))) - next = commit_list_append(commit, next); + while ((commit = get_revision(opts->revs))) { + struct todo_item *item = append_todo(todo_list); + const char *commit_buffer = get_commit_buffer(commit, NULL); + const char *subject; + int subject_len; + + item->command = command; + item->commit = commit; + item->offset_in_buf = todo_list->buf.len; + subject_len = find_commit_subject(commit_buffer, &subject); + strbuf_addf(&todo_list->buf, "%s %s %.*s\n", + opts->action == REPLAY_PICK ? "pick" : "revert", + find_unique_abbrev(commit->object.oid.hash, + DEFAULT_ABBREV), + subject_len, subject); + unuse_commit_buffer(commit, commit_buffer); + } return 0; } @@ -977,30 +1003,24 @@ fail: return -1; } -static int save_todo(struct commit_list *todo_list, struct replay_opts *opts) +static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) { static struct lock_file todo_lock; - struct strbuf buf = STRBUF_INIT; - int fd; + const char *todo_path = get_todo_path(opts); + int next = todo_list->current, offset, fd; - fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), 0); + fd = hold_lock_file_for_update(&todo_lock, todo_path, 0); if (fd < 0) return error_errno(_("Could not lock '%s'"), git_path_todo_file()); - if (format_todo(&buf, todo_list, opts) < 0) { - strbuf_release(&buf); - return error(_("Could not format %s."), git_path_todo_file()); - } - if (write_in_full(fd, buf.buf, buf.len) < 0) { - strbuf_release(&buf); - return error_errno(_("Could not write to %s"), - git_path_todo_file()); - } - if (commit_lock_file(&todo_lock) < 0) { - strbuf_release(&buf); - return error(_("Error wrapping up %s."), git_path_todo_file()); - } - strbuf_release(&buf); + offset = next < todo_list->nr ? + todo_list->items[next].offset_in_buf : todo_list->buf.len; + if (write_in_full(fd, todo_list->buf.buf + offset, + todo_list->buf.len - offset) < 0) + return error(_("Could not write to %s (%s)"), + todo_path, strerror(errno)); + if (commit_lock_file(&todo_lock) < 0) + return error(_("Error wrapping up %s."), todo_path); return 0; } @@ -1039,9 +1059,8 @@ static int save_opts(struct replay_opts *opts) return res; } -static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) +static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { - struct commit_list *cur; int res; setenv(GIT_REFLOG_ACTION, action_name(opts), 0); @@ -1051,10 +1070,12 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) if (read_and_refresh_cache(opts)) return -1; - for (cur = todo_list; cur; cur = cur->next) { - if (save_todo(cur, opts)) + while (todo_list->current < todo_list->nr) { + struct todo_item *item = todo_list->items + todo_list->current; + if (save_todo(todo_list, opts)) return -1; - res = do_pick_commit(cur->item, opts); + res = do_pick_commit(item->command, item->commit, opts); + todo_list->current++; if (res) return res; } @@ -1079,7 +1100,8 @@ static int continue_single_pick(void) static int sequencer_continue(struct replay_opts *opts) { - struct commit_list *todo_list = NULL; + struct todo_list todo_list = TODO_LIST_INIT; + int res; if (!file_exists(get_todo_path(opts))) return continue_single_pick(); @@ -1096,21 +1118,24 @@ static int sequencer_continue(struct replay_opts *opts) } if (index_differs_from("HEAD", 0)) return error_dirty_index(opts); - todo_list = todo_list->next; - return pick_commits(todo_list, opts); + todo_list.current++; + res = pick_commits(&todo_list, opts); + todo_list_release(&todo_list); + return res; } static int single_pick(struct commit *cmit, struct replay_opts *opts) { setenv(GIT_REFLOG_ACTION, action_name(opts), 0); - return do_pick_commit(cmit, opts); + return do_pick_commit(opts->action == REPLAY_PICK ? + TODO_PICK : TODO_REVERT, cmit, opts); } int sequencer_pick_revisions(struct replay_opts *opts) { - struct commit_list *todo_list = NULL; + struct todo_list todo_list = TODO_LIST_INIT; unsigned char sha1[20]; - int i; + int i, res; if (opts->subcommand == REPLAY_NONE) assert(opts->revs); @@ -1185,7 +1210,9 @@ int sequencer_pick_revisions(struct replay_opts *opts) return -1; if (save_opts(opts)) return -1; - return pick_commits(todo_list, opts); + res = pick_commits(&todo_list, opts); + todo_list_release(&todo_list); + return res; } void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag) From e34ad4b33106f0347ad0baca522df8846240d58f Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 24 Feb 2016 14:57:22 +0100 Subject: [PATCH 32/80] sequencer: avoid completely different messages for different actions Signed-off-by: Johannes Schindelin --- sequencer.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/sequencer.c b/sequencer.c index cb4b424bd9..f239da7176 100644 --- a/sequencer.c +++ b/sequencer.c @@ -232,11 +232,8 @@ static int error_dirty_index(struct replay_opts *opts) if (read_cache_unmerged()) return error_resolve_conflict(action_name(opts)); - /* Different translation strings for cherry-pick and revert */ - if (opts->action == REPLAY_PICK) - error(_("Your local changes would be overwritten by cherry-pick.")); - else - error(_("Your local changes would be overwritten by revert.")); + error(_("Your local changes would be overwritten by %s."), + action_name(opts)); if (advice_commit_before_merge) advise(_("Commit your changes or stash them to proceed.")); From da9940d729ce16f2e3fc003aa4c50dc03b9946b2 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 17:39:02 +0200 Subject: [PATCH 33/80] sequencer: get rid of the subcommand field The subcommands are used exactly once, at the very beginning of sequencer_pick_revisions(), to determine what to do. This is an unnecessary level of indirection: we can simply call the correct function to begin with. So let's do that. While at it, ensure that the subcommands return an error code so that they do not have to die() all over the place (bad practice for library functions...). Signed-off-by: Johannes Schindelin --- builtin/revert.c | 36 ++++++++++++++++-------------------- sequencer.c | 35 +++++++++++------------------------ sequencer.h | 13 ++++--------- 3 files changed, 31 insertions(+), 53 deletions(-) diff --git a/builtin/revert.c b/builtin/revert.c index 7365559c97..c9ae4dc13a 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -71,7 +71,7 @@ static void verify_opt_compatible(const char *me, const char *base_opt, ...) die(_("%s: %s cannot be used with %s"), me, this_opt, base_opt); } -static void parse_args(int argc, const char **argv, struct replay_opts *opts) +static int run_sequencer(int argc, const char **argv, struct replay_opts *opts) { const char * const * usage_str = revert_or_cherry_pick_usage(opts); const char *me = action_name(opts); @@ -115,25 +115,15 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) if (opts->keep_redundant_commits) opts->allow_empty = 1; - /* Set the subcommand */ - if (cmd == 'q') - opts->subcommand = REPLAY_REMOVE_STATE; - else if (cmd == 'c') - opts->subcommand = REPLAY_CONTINUE; - else if (cmd == 'a') - opts->subcommand = REPLAY_ROLLBACK; - else - opts->subcommand = REPLAY_NONE; - /* Check for incompatible command line arguments */ - if (opts->subcommand != REPLAY_NONE) { + if (cmd) { char *this_operation; - if (opts->subcommand == REPLAY_REMOVE_STATE) + if (cmd == 'q') this_operation = "--quit"; - else if (opts->subcommand == REPLAY_CONTINUE) + else if (cmd == 'c') this_operation = "--continue"; else { - assert(opts->subcommand == REPLAY_ROLLBACK); + assert(cmd == 'a'); this_operation = "--abort"; } @@ -156,7 +146,7 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) "--edit", opts->edit, NULL); - if (opts->subcommand != REPLAY_NONE) { + if (cmd) { opts->revs = NULL; } else { struct setup_revision_opt s_r_opt; @@ -174,6 +164,14 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) if (argc > 1) usage_with_options(usage_str, options); + + if (cmd == 'q') + return sequencer_remove_state(opts); + if (cmd == 'c') + return sequencer_continue(opts); + if (cmd == 'a') + return sequencer_rollback(opts); + return sequencer_pick_revisions(opts); } int cmd_revert(int argc, const char **argv, const char *prefix) @@ -185,8 +183,7 @@ int cmd_revert(int argc, const char **argv, const char *prefix) opts.edit = 1; opts.action = REPLAY_REVERT; git_config(git_default_config, NULL); - parse_args(argc, argv, &opts); - res = sequencer_pick_revisions(&opts); + res = run_sequencer(argc, argv, &opts); if (res < 0) die(_("revert failed")); return res; @@ -199,8 +196,7 @@ int cmd_cherry_pick(int argc, const char **argv, const char *prefix) opts.action = REPLAY_PICK; git_config(git_default_config, NULL); - parse_args(argc, argv, &opts); - res = sequencer_pick_revisions(&opts); + res = run_sequencer(argc, argv, &opts); if (res < 0) die(_("cherry-pick failed")); return res; diff --git a/sequencer.c b/sequencer.c index f239da7176..69c74630d8 100644 --- a/sequencer.c +++ b/sequencer.c @@ -127,7 +127,7 @@ void *sequencer_entrust(struct replay_opts *opts, void *to_free) return to_free; } -static void remove_sequencer_state(const struct replay_opts *opts) +int sequencer_remove_state(struct replay_opts *opts) { struct strbuf dir = STRBUF_INIT; int i; @@ -141,6 +141,8 @@ static void remove_sequencer_state(const struct replay_opts *opts) strbuf_addf(&dir, "%s", get_dir(opts)); remove_dir_recursively(&dir, 0); strbuf_release(&dir); + + return 0; } static const char *action_name(const struct replay_opts *opts) @@ -957,7 +959,7 @@ static int rollback_single_pick(void) return reset_for_rollback(head_sha1); } -static int sequencer_rollback(struct replay_opts *opts) +int sequencer_rollback(struct replay_opts *opts) { FILE *f; unsigned char sha1[20]; @@ -992,9 +994,8 @@ static int sequencer_rollback(struct replay_opts *opts) } if (reset_for_rollback(sha1)) goto fail; - remove_sequencer_state(opts); strbuf_release(&buf); - return 0; + return sequencer_remove_state(opts); fail: strbuf_release(&buf); return -1; @@ -1081,8 +1082,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) * Sequence of picks finished successfully; cleanup by * removing the .git/sequencer directory */ - remove_sequencer_state(opts); - return 0; + return sequencer_remove_state(opts); } static int continue_single_pick(void) @@ -1095,11 +1095,14 @@ static int continue_single_pick(void) return run_command_v_opt(argv, RUN_GIT_CMD); } -static int sequencer_continue(struct replay_opts *opts) +int sequencer_continue(struct replay_opts *opts) { struct todo_list todo_list = TODO_LIST_INIT; int res; + if (read_and_refresh_cache(opts)) + return -1; + if (!file_exists(get_todo_path(opts))) return continue_single_pick(); if (read_populate_opts(opts) || @@ -1134,26 +1137,10 @@ int sequencer_pick_revisions(struct replay_opts *opts) unsigned char sha1[20]; int i, res; - if (opts->subcommand == REPLAY_NONE) - assert(opts->revs); - + assert(opts->revs); if (read_and_refresh_cache(opts)) return -1; - /* - * Decide what to do depending on the arguments; a fresh - * cherry-pick should be handled differently from an existing - * one that is being continued - */ - if (opts->subcommand == REPLAY_REMOVE_STATE) { - remove_sequencer_state(opts); - return 0; - } - if (opts->subcommand == REPLAY_ROLLBACK) - return sequencer_rollback(opts); - if (opts->subcommand == REPLAY_CONTINUE) - return sequencer_continue(opts); - for (i = 0; i < opts->revs->pending.nr; i++) { unsigned char sha1[20]; const char *name = opts->revs->pending.objects[i].name; diff --git a/sequencer.h b/sequencer.h index 04892a9c20..0b3950d8fd 100644 --- a/sequencer.h +++ b/sequencer.h @@ -10,16 +10,8 @@ enum replay_action { REPLAY_PICK }; -enum replay_subcommand { - REPLAY_NONE, - REPLAY_REMOVE_STATE, - REPLAY_CONTINUE, - REPLAY_ROLLBACK -}; - struct replay_opts { enum replay_action action; - enum replay_subcommand subcommand; /* Boolean options */ int edit; @@ -48,7 +40,7 @@ struct replay_opts { void **owned; int owned_nr, owned_alloc; }; -#define REPLAY_OPTS_INIT { -1, -1 } +#define REPLAY_OPTS_INIT { -1 } /* * Make it the duty of sequencer_remove_state() to release the memory; @@ -57,6 +49,9 @@ struct replay_opts { void *sequencer_entrust(struct replay_opts *opts, void *to_free); int sequencer_pick_revisions(struct replay_opts *opts); +int sequencer_continue(struct replay_opts *opts); +int sequencer_rollback(struct replay_opts *opts); +int sequencer_remove_state(struct replay_opts *opts); extern const char sign_off_header[]; From 9ff98fccce509b7013e9aba1ec49f60daef2f025 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 4 Mar 2016 16:21:16 +0100 Subject: [PATCH 34/80] sequencer: refactor the code to obtain a short commit name Not only does this DRY up the code (providing a better documentation what the code is about, as well as allowing to change the behavior in a single place), it also makes it substantially shorter to use the same functionality in functions to be introduced when we teach the sequencer to process interactive-rebase's git-rebase-todo file. Signed-off-by: Johannes Schindelin --- sequencer.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/sequencer.c b/sequencer.c index 69c74630d8..011c15b261 100644 --- a/sequencer.c +++ b/sequencer.c @@ -157,13 +157,18 @@ struct commit_message { const char *message; }; +static const char *short_commit_name(struct commit *commit) +{ + return find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV); +} + static int get_message(struct commit *commit, struct commit_message *out) { const char *abbrev, *subject; int subject_len; out->message = logmsg_reencode(commit, NULL, get_commit_output_encoding()); - abbrev = find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV); + abbrev = short_commit_name(commit); subject_len = find_commit_subject(out->message, &subject); @@ -647,8 +652,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, error(command == TODO_REVERT ? _("could not revert %s... %s") : _("could not apply %s... %s"), - find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV), - msg.subject); + short_commit_name(commit), msg.subject); print_advice(res == 1, opts); rerere(opts->allow_rerere_auto); goto leave; @@ -890,9 +894,7 @@ static int walk_revs_populate_todo(struct todo_list *todo_list, subject_len = find_commit_subject(commit_buffer, &subject); strbuf_addf(&todo_list->buf, "%s %s %.*s\n", opts->action == REPLAY_PICK ? "pick" : "revert", - find_unique_abbrev(commit->object.oid.hash, - DEFAULT_ABBREV), - subject_len, subject); + short_commit_name(commit), subject_len, subject); unuse_commit_buffer(commit, commit_buffer); } return 0; From 48a844018cabca9b91d86116a8704c9930fef1a3 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 17:31:24 +0100 Subject: [PATCH 35/80] sequencer: remember the onelines when parsing the todo file The `git-rebase-todo` file contains a list of commands. Most of those commands have the form The is displayed primarily for the user's convenience, as rebase -i really interprets only the part. However, there are *some* places in interactive rebase where the is used to display messages, e.g. for reporting at which commit we stopped. So let's just remember it when parsing the todo file; we keep a copy of the entire todo file anyway (to write out the new `done` and `git-rebase-todo` file just before processing each command), so all we need to do is remember the begin and end offsets. Signed-off-by: Johannes Schindelin --- sequencer.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sequencer.c b/sequencer.c index 011c15b261..525c4e1191 100644 --- a/sequencer.c +++ b/sequencer.c @@ -713,6 +713,8 @@ static int read_and_refresh_cache(struct replay_opts *opts) struct todo_item { enum todo_command command; struct commit *commit; + const char *arg; + int arg_len; size_t offset_in_buf; }; @@ -764,6 +766,9 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) status = get_sha1(bol, commit_sha1); *end_of_object_name = saved; + item->arg = end_of_object_name + strspn(end_of_object_name, " \t"); + item->arg_len = (int)(eol - item->arg); + if (status < 0) return -1; @@ -890,6 +895,8 @@ static int walk_revs_populate_todo(struct todo_list *todo_list, item->command = command; item->commit = commit; + item->arg = NULL; + item->arg_len = 0; item->offset_in_buf = todo_list->buf.len; subject_len = find_commit_subject(commit_buffer, &subject); strbuf_addf(&todo_list->buf, "%s %s %.*s\n", From f89fe1fc7075a09dbc42d5d396ad912138aca909 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 29 Feb 2016 17:17:47 +0100 Subject: [PATCH 36/80] sequencer: prepare for rebase -i's commit functionality In interactive rebases, we commit a little bit differently than the sequencer did so far: we heed the "author-script", the "message" and the "amend" files in the .git/rebase-merge/ subdirectory. Likewise, we may want to edit the commit message *even* when providing a file containing the suggested commit message. Therefore we change the code to not even provide a default message when we do not want any, and to call the editor explicitly. As interactive rebase's GPG settings are configured differently from how cherry-pick (and therefore sequencer) handles them, we will leave support for that to the next commit. Signed-off-by: Johannes Schindelin --- sequencer.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++------ sequencer.h | 3 ++ 2 files changed, 89 insertions(+), 11 deletions(-) diff --git a/sequencer.c b/sequencer.c index 525c4e1191..d9d87ec890 100644 --- a/sequencer.c +++ b/sequencer.c @@ -27,6 +27,19 @@ static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo") static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") +/* + * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and + * GIT_AUTHOR_DATE that will be used for the commit that is currently + * being rebased. + */ +static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") + +/* We will introduce the 'interactive rebase' mode later */ +static inline int is_rebase_i(const struct replay_opts *opts) +{ + return 0; +} + static const char *get_dir(const struct replay_opts *opts) { return git_path_seq_dir(); @@ -377,20 +390,76 @@ static int is_index_unchanged(void) return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash); } +static char **read_author_script(void) +{ + struct strbuf script = STRBUF_INIT; + int i, count = 0; + char *p, *p2, **env; + size_t env_size; + + if (strbuf_read_file(&script, rebase_path_author_script(), 256) <= 0) + return NULL; + + for (p = script.buf; *p; p++) + if (skip_prefix(p, "'\\\\''", (const char **)&p2)) + strbuf_splice(&script, p - script.buf, p2 - p, "'", 1); + else if (*p == '\'') + strbuf_splice(&script, p-- - script.buf, 1, "", 0); + else if (*p == '\n') { + *p = '\0'; + count++; + } + + env_size = (count + 1) * sizeof(*env); + strbuf_grow(&script, env_size); + memmove(script.buf + env_size, script.buf, script.len); + p = script.buf + env_size; + env = (char **)strbuf_detach(&script, NULL); + + for (i = 0; i < count; i++) { + env[i] = p; + p += strlen(p) + 1; + } + env[count] = NULL; + + return env; +} + /* * If we are cherry-pick, and if the merge did not result in * hand-editing, we will hit this commit and inherit the original * author date and name. + * * If we are revert, or if our cherry-pick results in a hand merge, * we had better say that the current user is responsible for that. + * + * An exception is when sequencer_commit() is called during an + * interactive rebase: in that case, we will want to retain the + * author metadata. */ -static int run_git_commit(const char *defmsg, struct replay_opts *opts, +int sequencer_commit(const char *defmsg, struct replay_opts *opts, int allow_empty) { + char **env = NULL; struct argv_array array; int rc; const char *value; + if (is_rebase_i(opts)) { + env = read_author_script(); + if (!env) + return error("You have staged changes in your working " + "tree. If these changes are meant to be\n" + "squashed into the previous commit, run:\n\n" + " git commit --amend $gpg_sign_opt_quoted\n\n" + "If they are meant to go into a new commit, " + "run:\n\n" + " git commit $gpg_sign_opt_quoted\n\n" + "In both case, once you're done, continue " + "with:\n\n" + " git rebase --continue\n"); + } + argv_array_init(&array); argv_array_push(&array, "commit"); argv_array_push(&array, "-n"); @@ -399,14 +468,13 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, argv_array_pushf(&array, "-S%s", opts->gpg_sign); if (opts->signoff) argv_array_push(&array, "-s"); - if (!opts->edit) { - argv_array_push(&array, "-F"); - argv_array_push(&array, defmsg); - if (!opts->signoff && - !opts->record_origin && - git_config_get_value("commit.cleanup", &value)) - argv_array_push(&array, "--cleanup=verbatim"); - } + if (defmsg) + argv_array_pushl(&array, "-F", defmsg, NULL); + if (opts->edit) + argv_array_push(&array, "-e"); + else if (!opts->signoff && !opts->record_origin && + git_config_get_value("commit.cleanup", &value)) + argv_array_push(&array, "--cleanup=verbatim"); if (allow_empty) argv_array_push(&array, "--allow-empty"); @@ -414,8 +482,11 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, if (opts->allow_empty_message) argv_array_push(&array, "--allow-empty-message"); - rc = run_command_v_opt(array.argv, RUN_GIT_CMD); + rc = run_command_v_opt_cd_env(array.argv, RUN_GIT_CMD, NULL, + (const char *const *)env); argv_array_clear(&array); + free(env); + return rc; } @@ -664,7 +735,8 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, goto leave; } if (!opts->no_commit) - res = run_git_commit(git_path_merge_msg(), opts, allow); + res = sequencer_commit(opts->edit ? NULL : git_path_merge_msg(), + opts, allow); leave: free_message(commit, &msg); @@ -863,6 +935,9 @@ static int populate_opts_cb(const char *key, const char *value, void *data) static int read_populate_opts(struct replay_opts *opts) { + if (is_rebase_i(opts)) + return 0; + if (!file_exists(git_path_opts_file())) return 0; /* diff --git a/sequencer.h b/sequencer.h index 0b3950d8fd..16deb6c85d 100644 --- a/sequencer.h +++ b/sequencer.h @@ -53,6 +53,9 @@ int sequencer_continue(struct replay_opts *opts); int sequencer_rollback(struct replay_opts *opts); int sequencer_remove_state(struct replay_opts *opts); +int sequencer_commit(const char *defmsg, struct replay_opts *opts, + int allow_empty); + extern const char sign_off_header[]; void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag); From 667092ff9d4618f1b3400957a20beed139fef730 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 19 May 2016 09:00:44 +0200 Subject: [PATCH 37/80] sequencer: introduce a helper to read files written by scripts As we are slowly teaching the sequencer to perform the hard work for the interactive rebase, we need to read files that were written by shell scripts. These files typically contain a single line and are invariably ended by a line feed (and possibly a carriage return before that). Let's use a helper to read such files and to remove the line ending. Signed-off-by: Johannes Schindelin --- sequencer.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/sequencer.c b/sequencer.c index d9d87ec890..86c4d079ee 100644 --- a/sequencer.c +++ b/sequencer.c @@ -242,6 +242,37 @@ static int write_message(struct strbuf *msgbuf, const char *filename) return 0; } +/* + * Reads a file that was presumably written by a shell script, i.e. + * with an end-of-line marker that needs to be stripped. + * + * Returns 1 if the file was read, 0 if it could not be read or does not exist. + */ +static int read_oneliner(struct strbuf *buf, + const char *path, int skip_if_empty) +{ + int orig_len = buf->len; + + if (!file_exists(path)) + return 0; + + if (strbuf_read_file(buf, path, 0) < 0) { + warning_errno("could not read '%s'", path); + return 0; + } + + if (buf->len > orig_len && buf->buf[buf->len - 1] == '\n') { + if (--buf->len > orig_len && buf->buf[buf->len - 1] == '\r') + --buf->len; + buf->buf[buf->len] = '\0'; + } + + if (skip_if_empty && buf->len == orig_len) + return 0; + + return 1; +} + static struct tree *empty_tree(void) { return lookup_tree(EMPTY_TREE_SHA1_BIN); From 80d91ee1f00dfb355e8be26b7d5a1114502c70a5 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 18 May 2016 14:49:39 +0200 Subject: [PATCH 38/80] sequencer: prepare for rebase -i's GPG settings The rebase command sports a `--gpg-sign` option that is heeded by the interactive rebase. This patch teaches the sequencer that trick, as part of the bigger effort to make the sequencer the work horse of the interactive rebase. Signed-off-by: Johannes Schindelin --- sequencer.c | 49 ++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 44 insertions(+), 5 deletions(-) diff --git a/sequencer.c b/sequencer.c index 86c4d079ee..7608cb2769 100644 --- a/sequencer.c +++ b/sequencer.c @@ -15,6 +15,7 @@ #include "merge-recursive.h" #include "refs.h" #include "argv-array.h" +#include "quote.h" #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" @@ -33,6 +34,11 @@ static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") * being rebased. */ static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") +/* + * The following files are written by git-rebase just after parsing the + * command-line (and are only consumed, not modified, by the sequencer). + */ +static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") /* We will introduce the 'interactive rebase' mode later */ static inline int is_rebase_i(const struct replay_opts *opts) @@ -132,6 +138,16 @@ static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob, return 1; } +static const char *gpg_sign_opt_quoted(struct replay_opts *opts) +{ + static struct strbuf buf = STRBUF_INIT; + + strbuf_reset(&buf); + if (opts->gpg_sign) + sq_quotef(&buf, "-S%s", opts->gpg_sign); + return buf.buf; +} + void *sequencer_entrust(struct replay_opts *opts, void *to_free) { ALLOC_GROW(opts->owned, opts->owned_nr + 1, opts->owned_alloc); @@ -478,17 +494,20 @@ int sequencer_commit(const char *defmsg, struct replay_opts *opts, if (is_rebase_i(opts)) { env = read_author_script(); - if (!env) + if (!env) { + const char *gpg_opt = gpg_sign_opt_quoted(opts); + return error("You have staged changes in your working " "tree. If these changes are meant to be\n" "squashed into the previous commit, run:\n\n" - " git commit --amend $gpg_sign_opt_quoted\n\n" + " git commit --amend %s\n\n" "If they are meant to go into a new commit, " "run:\n\n" - " git commit $gpg_sign_opt_quoted\n\n" + " git commit %s\n\n" "In both case, once you're done, continue " "with:\n\n" - " git rebase --continue\n"); + " git rebase --continue\n", gpg_opt, gpg_opt); + } } argv_array_init(&array); @@ -966,8 +985,28 @@ static int populate_opts_cb(const char *key, const char *value, void *data) static int read_populate_opts(struct replay_opts *opts) { - if (is_rebase_i(opts)) + if (is_rebase_i(opts)) { + struct strbuf buf = STRBUF_INIT; + + if (read_oneliner(&buf, rebase_path_gpg_sign_opt(), 1)) { + if (buf.len && buf.buf[buf.len - 1] == '\n') { + if (--buf.len && + buf.buf[buf.len - 1] == '\r') + buf.len--; + buf.buf[buf.len] = '\0'; + } + + if (!starts_with(buf.buf, "-S")) + strbuf_reset(&buf); + else { + opts->gpg_sign = buf.buf + 2; + sequencer_entrust(opts, + strbuf_detach(&buf, NULL)); + } + } + return 0; + } if (!file_exists(git_path_opts_file())) return 0; From cd659a0be53edfba228c14054a0bd1f726d43269 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 4 Mar 2016 16:13:26 +0100 Subject: [PATCH 39/80] sequencer: allow editing the commit message on a case-by-case basis In the upcoming commits, we will implement more and more of rebase -i's functionality. One particular feature of the commands to come is that some of them allow editing the commit message while others don't, i.e. we cannot define in the replay_opts whether the commit message should be edited or not. Signed-off-by: Johannes Schindelin --- sequencer.c | 6 +++--- sequencer.h | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/sequencer.c b/sequencer.c index 7608cb2769..b6428d5198 100644 --- a/sequencer.c +++ b/sequencer.c @@ -485,7 +485,7 @@ static char **read_author_script(void) * author metadata. */ int sequencer_commit(const char *defmsg, struct replay_opts *opts, - int allow_empty) + int allow_empty, int edit) { char **env = NULL; struct argv_array array; @@ -520,7 +520,7 @@ int sequencer_commit(const char *defmsg, struct replay_opts *opts, argv_array_push(&array, "-s"); if (defmsg) argv_array_pushl(&array, "-F", defmsg, NULL); - if (opts->edit) + if (edit) argv_array_push(&array, "-e"); else if (!opts->signoff && !opts->record_origin && git_config_get_value("commit.cleanup", &value)) @@ -786,7 +786,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } if (!opts->no_commit) res = sequencer_commit(opts->edit ? NULL : git_path_merge_msg(), - opts, allow); + opts, allow, opts->edit); leave: free_message(commit, &msg); diff --git a/sequencer.h b/sequencer.h index 16deb6c85d..7f5222f6c2 100644 --- a/sequencer.h +++ b/sequencer.h @@ -54,7 +54,7 @@ int sequencer_rollback(struct replay_opts *opts); int sequencer_remove_state(struct replay_opts *opts); int sequencer_commit(const char *defmsg, struct replay_opts *opts, - int allow_empty); + int allow_empty, int edit); extern const char sign_off_header[]; From fc09e1c4886b2915d1f5f6d76ff720d30e761ba5 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 4 Mar 2016 15:01:48 +0100 Subject: [PATCH 40/80] sequencer: support amending commits This teaches the sequencer_commit() function to take an argument that will allow us to implement "todo" commands that need to amend the commit messages ("fixup", "squash" and "reword"). Signed-off-by: Johannes Schindelin --- sequencer.c | 6 ++++-- sequencer.h | 2 +- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index b6428d5198..b713edf195 100644 --- a/sequencer.c +++ b/sequencer.c @@ -485,7 +485,7 @@ static char **read_author_script(void) * author metadata. */ int sequencer_commit(const char *defmsg, struct replay_opts *opts, - int allow_empty, int edit) + int allow_empty, int edit, int amend) { char **env = NULL; struct argv_array array; @@ -514,6 +514,8 @@ int sequencer_commit(const char *defmsg, struct replay_opts *opts, argv_array_push(&array, "commit"); argv_array_push(&array, "-n"); + if (amend) + argv_array_push(&array, "--amend"); if (opts->gpg_sign) argv_array_pushf(&array, "-S%s", opts->gpg_sign); if (opts->signoff) @@ -786,7 +788,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } if (!opts->no_commit) res = sequencer_commit(opts->edit ? NULL : git_path_merge_msg(), - opts, allow, opts->edit); + opts, allow, opts->edit, 0); leave: free_message(commit, &msg); diff --git a/sequencer.h b/sequencer.h index 7f5222f6c2..c45f5c4d62 100644 --- a/sequencer.h +++ b/sequencer.h @@ -54,7 +54,7 @@ int sequencer_rollback(struct replay_opts *opts); int sequencer_remove_state(struct replay_opts *opts); int sequencer_commit(const char *defmsg, struct replay_opts *opts, - int allow_empty, int edit); + int allow_empty, int edit, int amend); extern const char sign_off_header[]; From 89e283d4da273bbc576fa6d793e54a24a9a0c740 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 4 Mar 2016 15:01:48 +0100 Subject: [PATCH 41/80] sequencer: support cleaning up commit messages The sequencer_commit() function already knows how to amend commits, and with this new option, it can also clean up commit messages (i.e. strip out commented lines). This is needed to implement rebase -i's 'fixup' and 'squash' commands as sequencer commands. Signed-off-by: Johannes Schindelin --- sequencer.c | 10 +++++++--- sequencer.h | 3 ++- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/sequencer.c b/sequencer.c index b713edf195..c98638d915 100644 --- a/sequencer.c +++ b/sequencer.c @@ -485,7 +485,8 @@ static char **read_author_script(void) * author metadata. */ int sequencer_commit(const char *defmsg, struct replay_opts *opts, - int allow_empty, int edit, int amend) + int allow_empty, int edit, int amend, + int cleanup_commit_message) { char **env = NULL; struct argv_array array; @@ -522,9 +523,12 @@ int sequencer_commit(const char *defmsg, struct replay_opts *opts, argv_array_push(&array, "-s"); if (defmsg) argv_array_pushl(&array, "-F", defmsg, NULL); + if (cleanup_commit_message) + argv_array_push(&array, "--cleanup=strip"); if (edit) argv_array_push(&array, "-e"); - else if (!opts->signoff && !opts->record_origin && + else if (!cleanup_commit_message && + !opts->signoff && !opts->record_origin && git_config_get_value("commit.cleanup", &value)) argv_array_push(&array, "--cleanup=verbatim"); @@ -788,7 +792,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } if (!opts->no_commit) res = sequencer_commit(opts->edit ? NULL : git_path_merge_msg(), - opts, allow, opts->edit, 0); + opts, allow, opts->edit, 0, 0); leave: free_message(commit, &msg); diff --git a/sequencer.h b/sequencer.h index c45f5c4d62..688fff16dd 100644 --- a/sequencer.h +++ b/sequencer.h @@ -54,7 +54,8 @@ int sequencer_rollback(struct replay_opts *opts); int sequencer_remove_state(struct replay_opts *opts); int sequencer_commit(const char *defmsg, struct replay_opts *opts, - int allow_empty, int edit, int amend); + int allow_empty, int edit, int amend, + int cleanup_commit_message); extern const char sign_off_header[]; From 044ce91767d9ceac5cb9f24d2f0dbb180649dcfe Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Sat, 9 Apr 2016 14:48:50 +0200 Subject: [PATCH 42/80] sequencer: remember do_recursive_merge()'s return value The return value of do_recursive_merge() may be positive (indicating merge conflicts), so let's OR later error conditions so as not to overwrite them with 0. This is not yet a problem, but preparing for the patches to come: we will teach the sequencer to do rebase -i's job. Signed-off-by: Johannes Schindelin --- sequencer.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/sequencer.c b/sequencer.c index c98638d915..34df089040 100644 --- a/sequencer.c +++ b/sequencer.c @@ -630,7 +630,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, const char *base_label, *next_label; struct commit_message msg = { NULL, NULL, NULL, NULL }; struct strbuf msgbuf = STRBUF_INIT; - int res, unborn = 0, allow; + int res = 0, unborn = 0, allow; if (opts->no_commit) { /* @@ -741,7 +741,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { - res = do_recursive_merge(base, next, base_label, next_label, + res |= do_recursive_merge(base, next, base_label, next_label, head, &msgbuf, opts); if (res < 0) return res; @@ -750,7 +750,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, struct commit_list *common = NULL; struct commit_list *remotes = NULL; - res = write_message(&msgbuf, git_path_merge_msg()); + res |= write_message(&msgbuf, git_path_merge_msg()); commit_list_insert(base, &common); commit_list_insert(next, &remotes); @@ -787,11 +787,12 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, allow = allow_empty(opts, commit); if (allow < 0) { - res = allow; + res |= allow; goto leave; } if (!opts->no_commit) - res = sequencer_commit(opts->edit ? NULL : git_path_merge_msg(), + res |= sequencer_commit(opts->edit ? + NULL : git_path_merge_msg(), opts, allow, opts->edit, 0, 0); leave: From c1189fa773416ee37228cff5c98d809a915ea0f6 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 15 Apr 2016 17:41:32 +0200 Subject: [PATCH 43/80] sequencer: left-trim the lines read from the script Interactive rebase's scripts may be indented; We need to handle this case, too, now that we prepare the sequencer to process interactive rebases. Signed-off-by: Johannes Schindelin --- sequencer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sequencer.c b/sequencer.c index 34df089040..3d0aa85e2b 100644 --- a/sequencer.c +++ b/sequencer.c @@ -875,6 +875,9 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) char *end_of_object_name; int i, saved, status, padding; + /* left-trim */ + bol += strspn(bol, " \t"); + for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++) if (skip_prefix(bol, todo_command_strings[i], &bol)) { item->command = i; From 1e7bed76e42ef3c2818f5b369bf7c1a07b4ff2f4 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 23 Aug 2016 15:06:53 +0200 Subject: [PATCH 44/80] sequencer: refactor write_message() The write_message() function safely writes an strbuf to a file. Sometimes this is inconvenient, though: the text to be written may not be stored in a strbuf, or the strbuf should not be released after writing. Let's allow for such use cases by refactoring write_message() to allow for a convenience function write_file_gently(). As some of the upcoming callers of that new function will want to append a newline character, let's just add a flag for that, too. Signed-off-by: Johannes Schindelin --- sequencer.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index 3d0aa85e2b..a89ef27826 100644 --- a/sequencer.c +++ b/sequencer.c @@ -242,22 +242,37 @@ static void print_advice(int show_hint, struct replay_opts *opts) } } -static int write_message(struct strbuf *msgbuf, const char *filename) +static int write_with_lock_file(const char *filename, + const void *buf, size_t len, int append_eol) { static struct lock_file msg_file; int msg_fd = hold_lock_file_for_update(&msg_file, filename, 0); if (msg_fd < 0) return error_errno(_("Could not lock '%s'"), filename); - if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0) + if (write_in_full(msg_fd, buf, len) < 0) return error_errno(_("Could not write to %s"), filename); - strbuf_release(msgbuf); + if (append_eol && write(msg_fd, "\n", 1) < 0) + return error_errno(_("Could not write eol to %s"), filename); if (commit_lock_file(&msg_file) < 0) return error(_("Error wrapping up %s."), filename); return 0; } +static int write_message(struct strbuf *msgbuf, const char *filename) +{ + int res = write_with_lock_file(filename, msgbuf->buf, msgbuf->len, 0); + strbuf_release(msgbuf); + return res; +} + +static int write_file_gently(const char *filename, + const char *text, int append_eol) +{ + return write_with_lock_file(filename, text, strlen(text), append_eol); +} + /* * Reads a file that was presumably written by a shell script, i.e. * with an end-of-line marker that needs to be stripped. From 5ffec2e588a4edc4902e1ab3a2ec3a73a7c3625b Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 9 Feb 2016 14:10:43 +0100 Subject: [PATCH 45/80] sequencer: support a new action: 'interactive rebase' This patch introduces a new action for the sequencer. It really does not do a whole lot of its own right now, but lays the ground work for patches to come. The intention, of course, is to finally make the sequencer the work horse of the interactive rebase (the original idea behind the "sequencer" concept). Signed-off-by: Johannes Schindelin --- sequencer.c | 32 +++++++++++++++++++++++++++++--- sequencer.h | 3 ++- 2 files changed, 31 insertions(+), 4 deletions(-) diff --git a/sequencer.c b/sequencer.c index a89ef27826..5598534b5e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -28,6 +28,14 @@ static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo") static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") +static GIT_PATH_FUNC(rebase_path, "rebase-merge") +/* + * The file containing rebase commands, comments, and empty lines. + * This file is created by "git rebase -i" then edited by the user. As + * the lines are processed, they are removed from the front of this + * file and written to the tail of 'done'. + */ +static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") /* * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and * GIT_AUTHOR_DATE that will be used for the commit that is currently @@ -43,16 +51,20 @@ static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") /* We will introduce the 'interactive rebase' mode later */ static inline int is_rebase_i(const struct replay_opts *opts) { - return 0; + return opts->action == REPLAY_INTERACTIVE_REBASE; } static const char *get_dir(const struct replay_opts *opts) { + if (is_rebase_i(opts)) + return rebase_path(); return git_path_seq_dir(); } static const char *get_todo_path(const struct replay_opts *opts) { + if (is_rebase_i(opts)) + return rebase_path_todo(); return git_path_todo_file(); } @@ -176,7 +188,15 @@ int sequencer_remove_state(struct replay_opts *opts) static const char *action_name(const struct replay_opts *opts) { - return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick"; + switch (opts->action) { + case REPLAY_REVERT: + return "revert"; + case REPLAY_PICK: + return "cherry-pick"; + case REPLAY_INTERACTIVE_REBASE: + return "rebase -i"; + } + die("Unknown action: %d", opts->action); } struct commit_message { @@ -407,7 +427,10 @@ static int do_recursive_merge(struct commit *base, struct commit *next, if (active_cache_changed && write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) - /* TRANSLATORS: %s will be "revert" or "cherry-pick" */ + /* + * TRANSLATORS: %s will be "revert", "cherry-pick" or + * "rebase -i". + */ return error(_("%s: Unable to write new index file"), action_name(opts)); rollback_lock_file(&index_lock); @@ -1186,6 +1209,9 @@ static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) const char *todo_path = get_todo_path(opts); int next = todo_list->current, offset, fd; + if (is_rebase_i(opts)) + next++; + fd = hold_lock_file_for_update(&todo_lock, todo_path, 0); if (fd < 0) return error_errno(_("Could not lock '%s'"), diff --git a/sequencer.h b/sequencer.h index 688fff16dd..edd7d4a8d1 100644 --- a/sequencer.h +++ b/sequencer.h @@ -7,7 +7,8 @@ const char *git_path_seq_dir(void); enum replay_action { REPLAY_REVERT, - REPLAY_PICK + REPLAY_PICK, + REPLAY_INTERACTIVE_REBASE }; struct replay_opts { From 3a08b4173a95f1321d5d17dfec278ae7f7dfa070 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:07:35 +0200 Subject: [PATCH 46/80] sequencer (rebase -i): implement the 'noop' command The 'noop' command is probably the most boring of all rebase -i commands to support in the sequencer. Which makes it an excellent candidate for this first stab to add support for rebase -i's commands to the sequencer. For the moment, let's also treat empty lines and commented-out lines as 'noop'; We will refine that handling later in this patch series. Signed-off-by: Johannes Schindelin --- sequencer.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index 5598534b5e..f85dc9cf0a 100644 --- a/sequencer.c +++ b/sequencer.c @@ -644,12 +644,14 @@ static int allow_empty(struct replay_opts *opts, struct commit *commit) enum todo_command { TODO_PICK, - TODO_REVERT + TODO_REVERT, + TODO_NOOP }; static const char *todo_command_strings[] = { "pick", - "revert" + "revert", + "noop" }; static const char *command_to_string(const enum todo_command command) @@ -916,6 +918,14 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) /* left-trim */ bol += strspn(bol, " \t"); + if (bol == eol || *bol == '\r' || *bol == comment_line_char) { + item->command = TODO_NOOP; + item->commit = NULL; + item->arg = bol; + item->arg_len = eol - bol; + return 0; + } + for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++) if (skip_prefix(bol, todo_command_strings[i], &bol)) { item->command = i; @@ -924,6 +934,13 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) if (i >= ARRAY_SIZE(todo_command_strings)) return -1; + if (item->command == TODO_NOOP) { + item->commit = NULL; + item->arg = bol; + item->arg_len = eol - bol; + return 0; + } + /* Eat up extra spaces/ tabs before object name */ padding = strspn(bol, " \t"); if (!padding) @@ -1277,7 +1294,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) struct todo_item *item = todo_list->items + todo_list->current; if (save_todo(todo_list, opts)) return -1; - res = do_pick_commit(item->command, item->commit, opts); + if (item->command <= TODO_REVERT) + res = do_pick_commit(item->command, item->commit, + opts); + else if (item->command != TODO_NOOP) + return error("Unknown command %d", item->command); + todo_list->current++; if (res) return res; From 755be5201e9ab12a0cce2bebcdf3ab37dfc368c7 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:07:47 +0200 Subject: [PATCH 47/80] sequencer (rebase -i): implement the 'edit' command This patch is a straight-forward reimplementation of the `edit` operation of the interactive rebase command. Well, not *quite* straight-forward: when stopping, the `edit` command wants to write the `patch` file (which is not only the patch, but includes the commit message and author information). To that end, this patch requires the earlier work that taught the log-tree machinery to respect the `file` setting of rev_info->diffopt to write to a file stream different than stdout. Signed-off-by: Johannes Schindelin --- sequencer.c | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 112 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index f85dc9cf0a..fe2f6e7d85 100644 --- a/sequencer.c +++ b/sequencer.c @@ -16,6 +16,7 @@ #include "refs.h" #include "argv-array.h" #include "quote.h" +#include "log-tree.h" #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" @@ -42,6 +43,20 @@ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") * being rebased. */ static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") +/* + * When an "edit" rebase command is being processed, the SHA1 of the + * commit to be edited is recorded in this file. When "git rebase + * --continue" is executed, if there are any staged changes then they + * will be amended to the HEAD commit, but only provided the HEAD + * commit is still the commit to be edited. When any other rebase + * command is processed, this file is deleted. + */ +static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend") +/* + * When we stop at a given patch via the "edit" command, this file contains + * the long commit name of the corresponding patch. + */ +static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") /* * The following files are written by git-rebase just after parsing the * command-line (and are only consumed, not modified, by the sequencer). @@ -645,12 +660,14 @@ static int allow_empty(struct replay_opts *opts, struct commit *commit) enum todo_command { TODO_PICK, TODO_REVERT, + TODO_EDIT, TODO_NOOP }; static const char *todo_command_strings[] = { "pick", "revert", + "edit", "noop" }; @@ -1279,9 +1296,85 @@ static int save_opts(struct replay_opts *opts) return res; } +static int make_patch(struct commit *commit, struct replay_opts *opts) +{ + struct strbuf buf = STRBUF_INIT; + struct rev_info log_tree_opt; + const char *commit_buffer = get_commit_buffer(commit, NULL), *subject; + int res = 0; + + if (write_file_gently(rebase_path_stopped_sha(), + short_commit_name(commit), 1) < 0) + return -1; + + strbuf_addf(&buf, "%s/patch", get_dir(opts)); + memset(&log_tree_opt, 0, sizeof(log_tree_opt)); + init_revisions(&log_tree_opt, NULL); + log_tree_opt.abbrev = 0; + log_tree_opt.diff = 1; + log_tree_opt.diffopt.output_format = DIFF_FORMAT_PATCH; + log_tree_opt.disable_stdin = 1; + log_tree_opt.no_commit_id = 1; + log_tree_opt.diffopt.file = fopen(buf.buf, "w"); + log_tree_opt.diffopt.use_color = GIT_COLOR_NEVER; + if (!log_tree_opt.diffopt.file) + res |= error_errno("could not open '%s'", buf.buf); + else { + res |= log_tree_commit(&log_tree_opt, commit); + fclose(log_tree_opt.diffopt.file); + } + strbuf_reset(&buf); + + strbuf_addf(&buf, "%s/message", get_dir(opts)); + if (!file_exists(buf.buf)) { + find_commit_subject(commit_buffer, &subject); + res |= write_file_gently(buf.buf, subject, 1); + unuse_commit_buffer(commit, commit_buffer); + } + strbuf_release(&buf); + + return res; +} + +static int intend_to_amend(void) +{ + unsigned char head[20]; + + if (get_sha1("HEAD", head)) + return error("Cannot read HEAD"); + + return write_file_gently(rebase_path_amend(), sha1_to_hex(head), 1); +} + +static int error_with_patch(struct commit *commit, + const char *subject, int subject_len, + struct replay_opts *opts, int exit_code, int to_amend) +{ + if (make_patch(commit, opts)) + return -1; + + if (to_amend) { + if (intend_to_amend()) + return -1; + + fprintf(stderr, "You can amend the commit now, with\n" + "\n" + " git commit --amend %s\n" + "\n" + "Once you are satisfied with your changes, run\n" + "\n" + " git rebase --continue\n", gpg_sign_opt_quoted(opts)); + } + else if (exit_code) + fprintf(stderr, "Could not apply %s... %.*s\n", + short_commit_name(commit), subject_len, subject); + + return exit_code; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { - int res; + int res = 0; setenv(GIT_REFLOG_ACTION, action_name(opts), 0); if (opts->allow_ff) @@ -1294,9 +1387,20 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) struct todo_item *item = todo_list->items + todo_list->current; if (save_todo(todo_list, opts)) return -1; - if (item->command <= TODO_REVERT) + if (item->command <= TODO_EDIT) { res = do_pick_commit(item->command, item->commit, opts); + if (item->command == TODO_EDIT) { + struct commit *commit = item->commit; + if (!res) + warning("Stopped at %s... %.*s", + short_commit_name(commit), + item->arg_len, item->arg); + return error_with_patch(commit, + item->arg, item->arg_len, opts, res, + !res); + } + } else if (item->command != TODO_NOOP) return error("Unknown command %d", item->command); @@ -1305,6 +1409,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) return res; } + if (is_rebase_i(opts)) { + /* Stopped in the middle, as planned? */ + if (todo_list->current < todo_list->nr) + return 0; + } + /* * Sequence of picks finished successfully; cleanup by * removing the .git/sequencer directory From 9191749ed726a88903c06e55478db64a32b632ec Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:08:01 +0200 Subject: [PATCH 48/80] sequencer (rebase -i): implement the 'exec' command The 'exec' command is a little special among rebase -i's commands, as it does *not* have a SHA-1 as first parameter. Instead, everything after the `exec` command is treated as command-line to execute. Let's reuse the arg/arg_len fields of the todo_item structure (which hold the oneline for pick/edit commands) to point to the command-line. Signed-off-by: Johannes Schindelin --- sequencer.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/sequencer.c b/sequencer.c index fe2f6e7d85..a58bb912a1 100644 --- a/sequencer.c +++ b/sequencer.c @@ -17,6 +17,7 @@ #include "argv-array.h" #include "quote.h" #include "log-tree.h" +#include "wt-status.h" #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" @@ -661,6 +662,7 @@ enum todo_command { TODO_PICK, TODO_REVERT, TODO_EDIT, + TODO_EXEC, TODO_NOOP }; @@ -668,6 +670,7 @@ static const char *todo_command_strings[] = { "pick", "revert", "edit", + "exec", "noop" }; @@ -964,6 +967,12 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) return -1; bol += padding; + if (item->command == TODO_EXEC) { + item->arg = bol; + item->arg_len = (int)(eol - bol); + return 0; + } + end_of_object_name = (char *) bol + strcspn(bol, " \t\n"); saved = *end_of_object_name; *end_of_object_name = '\0'; @@ -1372,6 +1381,47 @@ static int error_with_patch(struct commit *commit, return exit_code; } +static int do_exec(const char *command_line) +{ + const char *child_argv[] = { NULL, NULL }; + int dirty, status; + + fprintf(stderr, "Executing: %s\n", command_line); + child_argv[0] = command_line; + status = run_command_v_opt(child_argv, RUN_USING_SHELL); + + /* force re-reading of the cache */ + if (discard_cache() < 0 || read_cache() < 0) + return error(_("Could not read index")); + + dirty = require_clean_work_tree("rebase", NULL, 1, 1); + + if (status) { + warning("Execution failed: %s\n%s" + "You can fix the problem, and then run\n" + "\n" + " git rebase --continue\n" + "\n", + command_line, + dirty ? "and made changes to the index and/or the " + "working tree\n" : ""); + if (status == 127) + /* command not found */ + status = 1; + } + else if (dirty) { + warning("Execution succeeded: %s\nbut " + "left changes to the index and/or the working tree\n" + "Commit or stash your changes, and then run\n" + "\n" + " git rebase --continue\n" + "\n", command_line); + status = 1; + } + + return status; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { int res = 0; @@ -1401,6 +1451,14 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) !res); } } + else if (item->command == TODO_EXEC) { + char *end_of_arg = (char *)(item->arg + item->arg_len); + int saved = *end_of_arg; + + *end_of_arg = '\0'; + res = do_exec(item->arg); + *end_of_arg = saved; + } else if (item->command != TODO_NOOP) return error("Unknown command %d", item->command); From 68118621a481d786dd57d5c7fd4c3ea0a8e61b07 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 12 Apr 2016 15:30:26 +0200 Subject: [PATCH 49/80] sequencer (rebase -i): learn about the 'verbose' mode When calling `git rebase -i -v`, the user wants to see some statistics after the commits were rebased. Let's show some. The strbuf we use to perform that task will be used for other things in subsequent commits, hence it is declared and initialized in a wider scope than strictly needed here. Signed-off-by: Johannes Schindelin --- sequencer.c | 22 ++++++++++++++++++++++ sequencer.h | 1 + 2 files changed, 23 insertions(+) diff --git a/sequencer.c b/sequencer.c index a58bb912a1..95c31bb9ac 100644 --- a/sequencer.c +++ b/sequencer.c @@ -63,6 +63,8 @@ static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") * command-line (and are only consumed, not modified, by the sequencer). */ static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") +static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") +static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") /* We will introduce the 'interactive rebase' mode later */ static inline int is_rebase_i(const struct replay_opts *opts) @@ -1096,6 +1098,9 @@ static int read_populate_opts(struct replay_opts *opts) } } + if (file_exists(rebase_path_verbose())) + opts->verbose = 1; + return 0; } @@ -1468,9 +1473,26 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) } if (is_rebase_i(opts)) { + struct strbuf buf = STRBUF_INIT; + /* Stopped in the middle, as planned? */ if (todo_list->current < todo_list->nr) return 0; + + if (opts->verbose) { + const char *argv[] = { + "diff-tree", "--stat", NULL, NULL + }; + + if (!read_oneliner(&buf, rebase_path_orig_head(), 0)) + return error("Could not read %s", + rebase_path_orig_head()); + strbuf_addstr(&buf, "..HEAD"); + argv[2] = buf.buf; + run_command_v_opt(argv, RUN_GIT_CMD); + strbuf_reset(&buf); + } + strbuf_release(&buf); } /* diff --git a/sequencer.h b/sequencer.h index edd7d4a8d1..fd2a719e36 100644 --- a/sequencer.h +++ b/sequencer.h @@ -24,6 +24,7 @@ struct replay_opts { int allow_empty; int allow_empty_message; int keep_redundant_commits; + int verbose; int mainline; From 516d2aaf8837c8675141cf9c330c18c44765b69d Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 4 Mar 2016 16:18:50 +0100 Subject: [PATCH 50/80] sequencer (rebase -i): write the 'done' file In the interactive rebase, commands that were successfully processed are not simply discarded, but appended to the 'done' file instead. This is used e.g. to display the current state to the user in the output of `git status` or the progress. Signed-off-by: Johannes Schindelin --- sequencer.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/sequencer.c b/sequencer.c index 95c31bb9ac..3bff3d9686 100644 --- a/sequencer.c +++ b/sequencer.c @@ -38,6 +38,12 @@ static GIT_PATH_FUNC(rebase_path, "rebase-merge") * file and written to the tail of 'done'. */ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") +/* + * The rebase command lines that have already been processed. A line + * is moved here when it is first handled, before any associated user + * actions. + */ +static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") /* * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and * GIT_AUTHOR_DATE that will be used for the commit that is currently @@ -1272,6 +1278,20 @@ static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) todo_path, strerror(errno)); if (commit_lock_file(&todo_lock) < 0) return error(_("Error wrapping up %s."), todo_path); + + if (is_rebase_i(opts)) { + const char *done_path = rebase_path_done(); + int fd = open(done_path, O_CREAT | O_WRONLY | O_APPEND, 0666); + int prev_offset = !next ? 0 : + todo_list->items[next - 1].offset_in_buf; + + if (offset > prev_offset && write_in_full(fd, + todo_list->buf.buf + prev_offset, + offset - prev_offset) < 0) + return error(_("Could not write to %s (%s)"), + done_path, strerror(errno)); + close(fd); + } return 0; } From 5488a031ffe14373b7434d497b7fd2f2e5fe55bd Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 23 May 2016 16:49:51 +0200 Subject: [PATCH 51/80] sequencer (rebase -i): add support for the 'fixup' and 'squash' commands This is a huge patch, and at the same time a huge step forward to execute the performance-critical parts of the interactive rebase in a builtin command. Since 'fixup' and 'squash' are not only similar, but also need to know about each other (we want to reduce a series of fixups/squashes into a single, final commit message edit, from the user's point of view), we really have to implement them both at the same time. Most of the actual work is done by the existing code path that already handles the "pick" and the "edit" commands; We added support for other features (e.g. to amend the commit message) in the patches leading up to this one, yet there are still quite a few bits in this patch that simply would not make sense as individual patches (such as: determining whether there was anything to "fix up" in the "todo" script, etc). In theory, it would be possible to reuse the fast-forward code path also for the fixup and the squash code paths, but in practice this would make the code less readable. The end result cannot be fast-forwarded anyway, therefore let's just extend the cherry-picking code path for now. Since the sequencer parses the entire `git-rebase-todo` script in one go, fixup or squash commands without a preceding pick can be reported early (in git-rebase--interactive, we could only report such errors just before executing the fixup/squash). Signed-off-by: Johannes Schindelin --- sequencer.c | 242 +++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 231 insertions(+), 11 deletions(-) diff --git a/sequencer.c b/sequencer.c index 3bff3d9686..3ae5978604 100644 --- a/sequencer.c +++ b/sequencer.c @@ -44,6 +44,35 @@ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") * actions. */ static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") +/* + * The commit message that is planned to be used for any changes that + * need to be committed following a user interaction. + */ +static GIT_PATH_FUNC(rebase_path_message, "rebase-merge/message") +/* + * The file into which is accumulated the suggested commit message for + * squash/fixup commands. When the first of a series of squash/fixups + * is seen, the file is created and the commit message from the + * previous commit and from the first squash/fixup commit are written + * to it. The commit message for each subsequent squash/fixup commit + * is appended to the file as it is processed. + * + * The first line of the file is of the form + * # This is a combination of $count commits. + * where $count is the number of commits whose messages have been + * written to the file so far (including the initial "pick" commit). + * Each time that a commit message is processed, this line is read and + * updated. It is deleted just before the combined commit is made. + */ +static GIT_PATH_FUNC(rebase_path_squash_msg, "rebase-merge/message-squash") +/* + * If the current series of squash/fixups has not yet included a squash + * command, then this file exists and holds the commit message of the + * original "pick" commit. (If the series ends without a "squash" + * command, then this can be used as the commit message of the combined + * commit without opening the editor.) + */ +static GIT_PATH_FUNC(rebase_path_fixup_msg, "rebase-merge/message-fixup") /* * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and * GIT_AUTHOR_DATE that will be used for the commit that is currently @@ -670,6 +699,8 @@ enum todo_command { TODO_PICK, TODO_REVERT, TODO_EDIT, + TODO_FIXUP, + TODO_SQUASH, TODO_EXEC, TODO_NOOP }; @@ -678,6 +709,8 @@ static const char *todo_command_strings[] = { "pick", "revert", "edit", + "fixup", + "squash", "exec", "noop" }; @@ -689,16 +722,129 @@ static const char *command_to_string(const enum todo_command command) die("Unknown command: %d", command); } +static int is_fixup(enum todo_command command) +{ + return command == TODO_FIXUP || command == TODO_SQUASH; +} + +static const char *nth_for_number(int n) +{ + int n1 = n % 10, n10 = n % 100; + + if (n1 == 1 && n10 != 11) + return "st"; + if (n1 == 2 && n10 != 12) + return "nd"; + if (n1 == 3 && n10 != 13) + return "rd"; + return "th"; +} + +static int update_squash_messages(enum todo_command command, + struct commit *commit, struct replay_opts *opts) +{ + struct strbuf buf = STRBUF_INIT; + int count; + const char *message, *body; + + if (file_exists(rebase_path_squash_msg())) { + char *p, *p2; + + if (strbuf_read_file(&buf, rebase_path_squash_msg(), 2048) <= 0) + return error("Could not read %s", + rebase_path_squash_msg()); + + if (buf.buf[0] == '\n' || !skip_prefix(buf.buf + 1, + " This is a combination of ", + (const char **)&p)) + return error("Unexpected 1st line of squash message:\n" + "\n\t%.*s", + (int)(strchrnul(buf.buf, '\n') - buf.buf), + buf.buf); + count = strtol(p, &p2, 10); + + if (count < 1 || *p2 != ' ') + return error("Invalid 1st line of squash message:\n" + "\n\t%.*s", + (int)(strchrnul(buf.buf, '\n') - buf.buf), + buf.buf); + + sprintf((char *)p, "%d", ++count); + if (!*p2) + *p2 = ' '; + else { + *(++p2) = 'c'; + strbuf_insert(&buf, p2 - buf.buf, " ", 1); + } + } + else { + unsigned char head[20]; + struct commit *head_commit; + const char *head_message, *body; + + if (get_sha1("HEAD", head)) + return error("Need a HEAD to fixup"); + if (!(head_commit = lookup_commit_reference(head))) + return error("Could not read HEAD"); + if (!(head_message = get_commit_buffer(head_commit, NULL))) + return error("Could not read HEAD's commit message"); + + body = strstr(head_message, "\n\n"); + if (!body) + body = ""; + else + body = skip_blank_lines(body + 2); + if (write_file_gently(rebase_path_fixup_msg(), body, 0)) + return error("Cannot write %s", + rebase_path_fixup_msg()); + + count = 2; + strbuf_addf(&buf, "%c This is a combination of 2 commits.\n" + "%c The first commit's message is:\n\n%s", + comment_line_char, comment_line_char, body); + + unuse_commit_buffer(head_commit, head_message); + } + + if (!(message = get_commit_buffer(commit, NULL))) + return error("Could not read commit message of %s", + oid_to_hex(&commit->object.oid)); + body = strstr(message, "\n\n"); + if (!body) + body = ""; + else + body = skip_blank_lines(body + 2); + + if (command == TODO_SQUASH) { + unlink(rebase_path_fixup_msg()); + strbuf_addf(&buf, "\n%c This is the %d%s commit message:\n\n%s", + comment_line_char, + count, nth_for_number(count), body); + } + else if (command == TODO_FIXUP) { + strbuf_addf(&buf, + "\n%c The %d%s commit message will be skipped:\n\n", + comment_line_char, count, nth_for_number(count)); + strbuf_add_commented_lines(&buf, body, strlen(body)); + } + else + return error("Unknown command: %d", command); + unuse_commit_buffer(commit, message); + + return write_message(&buf, rebase_path_squash_msg()); +} static int do_pick_commit(enum todo_command command, struct commit *commit, - struct replay_opts *opts) + struct replay_opts *opts, int final_fixup) { + int edit = opts->edit, cleanup_commit_message = 0; + const char *msg_file = edit ? NULL : git_path_merge_msg(); unsigned char head[20]; struct commit *base, *next, *parent; const char *base_label, *next_label; struct commit_message msg = { NULL, NULL, NULL, NULL }; struct strbuf msgbuf = STRBUF_INIT; - int res = 0, unborn = 0, allow; + int res = 0, unborn = 0, amend = 0, allow; if (opts->no_commit) { /* @@ -744,7 +890,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, else parent = commit->parents->item; - if (opts->allow_ff && + if (opts->allow_ff && !is_fixup(command) && ((parent && !hashcmp(parent->object.oid.hash, head)) || (!parent && unborn))) return fast_forward_to(commit->object.oid.hash, head, unborn, opts); @@ -808,6 +954,28 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } } + if (is_fixup(command)) { + if (update_squash_messages(command, commit, opts)) + return -1; + amend = 1; + if (!final_fixup) + msg_file = rebase_path_squash_msg(); + else if (file_exists(rebase_path_fixup_msg())) { + cleanup_commit_message = 1; + msg_file = rebase_path_fixup_msg(); + } + else { + const char *dest = git_path("SQUASH_MSG"); + unlink(dest); + if (copy_file(dest, rebase_path_squash_msg(), 0666)) + return error("Could not rename %s to " + "%s", rebase_path_squash_msg(), dest); + unlink(git_path("MERGE_MSG")); + msg_file = dest; + edit = 1; + } + } + if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { res |= do_recursive_merge(base, next, base_label, next_label, head, &msgbuf, opts); @@ -859,9 +1027,13 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, goto leave; } if (!opts->no_commit) - res |= sequencer_commit(opts->edit ? - NULL : git_path_merge_msg(), - opts, allow, opts->edit, 0, 0); + res |= sequencer_commit(msg_file, opts, allow, edit, amend, + cleanup_commit_message); + + if (!res && final_fixup) { + unlink(rebase_path_fixup_msg()); + unlink(rebase_path_squash_msg()); + } leave: free_message(commit, &msg); @@ -1001,7 +1173,7 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) { struct todo_item *item; char *p = buf; - int i, res = 0; + int i, res = 0, fixup_okay = file_exists(rebase_path_done()); for (i = 1; *p; i++) { char *eol = strchrnul(p, '\n'); @@ -1011,8 +1183,15 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) if (parse_insn_line(item, p, eol)) { res |= error("Invalid line %d: %.*s", i, (int)(eol - p), p); - item->command = -1; + item->command = TODO_NOOP; } + if (fixup_okay) + ; /* do nothing */ + else if (is_fixup(item->command)) + return error("Cannot '%s' without a previous commit", + command_to_string(item->command)); + else if (item->command != TODO_NOOP) + fixup_okay = 1; p = *eol ? eol + 1 : eol; } if (!todo_list->nr) @@ -1406,6 +1585,20 @@ static int error_with_patch(struct commit *commit, return exit_code; } +static int error_failed_squash(struct commit *commit, + struct replay_opts *opts, int subject_len, const char *subject) +{ + if (rename(rebase_path_squash_msg(), rebase_path_message())) + return error("Could not rename %s to %s", + rebase_path_squash_msg(), rebase_path_message()); + unlink(rebase_path_fixup_msg()); + unlink(git_path("MERGE_MSG")); + if (copy_file(git_path("MERGE_MSG"), rebase_path_message(), 0666)) + return error("Could not copy %s to %s", rebase_path_message(), + git_path("MERGE_MSG")); + return error_with_patch(commit, subject, subject_len, opts, 1, 0); +} + static int do_exec(const char *command_line) { const char *child_argv[] = { NULL, NULL }; @@ -1447,6 +1640,21 @@ static int do_exec(const char *command_line) return status; } +static int is_final_fixup(struct todo_list *todo_list) +{ + int i = todo_list->current; + + if (!is_fixup(todo_list->items[i].command)) + return 0; + + while (++i < todo_list->nr) + if (is_fixup(todo_list->items[i].command)) + return 0; + else if (todo_list->items[i].command < TODO_NOOP) + break; + return 1; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { int res = 0; @@ -1462,9 +1670,15 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) struct todo_item *item = todo_list->items + todo_list->current; if (save_todo(todo_list, opts)) return -1; - if (item->command <= TODO_EDIT) { + if (is_rebase_i(opts)) { + unlink(rebase_path_message()); + unlink(rebase_path_author_script()); + unlink(rebase_path_stopped_sha()); + unlink(rebase_path_amend()); + } + if (item->command <= TODO_SQUASH) { res = do_pick_commit(item->command, item->commit, - opts); + opts, is_final_fixup(todo_list)); if (item->command == TODO_EDIT) { struct commit *commit = item->commit; if (!res) @@ -1475,6 +1689,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) item->arg, item->arg_len, opts, res, !res); } + if (res && is_fixup(item->command)) { + if (res == 1) + intend_to_amend(); + return error_failed_squash(item->commit, opts, + item->arg_len, item->arg); + } } else if (item->command == TODO_EXEC) { char *end_of_arg = (char *)(item->arg + item->arg_len); @@ -1565,7 +1785,7 @@ static int single_pick(struct commit *cmit, struct replay_opts *opts) { setenv(GIT_REFLOG_ACTION, action_name(opts), 0); return do_pick_commit(opts->action == REPLAY_PICK ? - TODO_PICK : TODO_REVERT, cmit, opts); + TODO_PICK : TODO_REVERT, cmit, opts, 0); } int sequencer_pick_revisions(struct replay_opts *opts) From 41ccb12044cd26fa8aa919b537cd396b983f4e31 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:08:09 +0200 Subject: [PATCH 52/80] sequencer (rebase -i): implement the short commands For users' convenience, most rebase commands can be abbreviated, e.g. 'p' instead of 'pick' and 'x' instead of 'exec'. Let's teach the sequencer to handle those abbreviated commands just fine. Signed-off-by: Johannes Schindelin --- sequencer.c | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/sequencer.c b/sequencer.c index 3ae5978604..919698b3fe 100644 --- a/sequencer.c +++ b/sequencer.c @@ -705,20 +705,23 @@ enum todo_command { TODO_NOOP }; -static const char *todo_command_strings[] = { - "pick", - "revert", - "edit", - "fixup", - "squash", - "exec", - "noop" +static struct { + char c; + const char *str; +} todo_command_info[] = { + { 'p', "pick" }, + { 0, "revert" }, + { 'e', "edit" }, + { 'f', "fixup" }, + { 's', "squash" }, + { 'x', "exec" }, + { 0, "noop" } }; static const char *command_to_string(const enum todo_command command) { - if (command < ARRAY_SIZE(todo_command_strings)) - return todo_command_strings[command]; + if (command < ARRAY_SIZE(todo_command_info)) + return todo_command_info[command].str; die("Unknown command: %d", command); } @@ -1126,12 +1129,17 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) return 0; } - for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++) - if (skip_prefix(bol, todo_command_strings[i], &bol)) { + for (i = 0; i < ARRAY_SIZE(todo_command_info); i++) + if (skip_prefix(bol, todo_command_info[i].str, &bol)) { item->command = i; break; } - if (i >= ARRAY_SIZE(todo_command_strings)) + else if (bol[1] == ' ' && *bol == todo_command_info[i].c) { + bol++; + item->command = i; + break; + } + if (i >= ARRAY_SIZE(todo_command_info)) return -1; if (item->command == TODO_NOOP) { From 36d2a101cc8eccbeba57da812e2f4b241b151238 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:11:12 +0200 Subject: [PATCH 53/80] sequencer (rebase -i): write an author-script file When the interactive rebase aborts, it writes out an author-script file to record the author information for the current commit. As we are about to teach the sequencer how to perform the actions behind an interactive rebase, it needs to write those author-script files, too. Signed-off-by: Johannes Schindelin --- sequencer.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 48 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 919698b3fe..ef818a2ffc 100644 --- a/sequencer.c +++ b/sequencer.c @@ -528,6 +528,51 @@ static int is_index_unchanged(void) return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash); } +static int write_author_script(const char *message) +{ + struct strbuf buf = STRBUF_INIT; + const char *eol; + + for (;;) + if (!*message || starts_with(message, "\n")) { +missing_author: + /* Missing 'author' line? */ + unlink(rebase_path_author_script()); + return 0; + } + else if (skip_prefix(message, "author ", &message)) + break; + else if ((eol = strchr(message, '\n'))) + message = eol + 1; + else + goto missing_author; + + strbuf_addstr(&buf, "GIT_AUTHOR_NAME='"); + while (*message && *message != '\n' && *message != '\r') + if (skip_prefix(message, " <", &message)) + break; + else if (*message != '\'') + strbuf_addch(&buf, *(message++)); + else + strbuf_addf(&buf, "'\\\\%c'", *(message++)); + strbuf_addstr(&buf, "'\nGIT_AUTHOR_EMAIL='"); + while (*message && *message != '\n' && *message != '\r') + if (skip_prefix(message, "> ", &message)) + break; + else if (*message != '\'') + strbuf_addch(&buf, *(message++)); + else + strbuf_addf(&buf, "'\\\\%c'", *(message++)); + strbuf_addstr(&buf, "'\nGIT_AUTHOR_DATE='@"); + while (*message && *message != '\n' && *message != '\r') + if (*message != '\'') + strbuf_addch(&buf, *(message++)); + else + strbuf_addf(&buf, "'\\\\%c'", *(message++)); + strbuf_addstr(&buf, "'\n"); + return write_message(&buf, rebase_path_author_script()); +} + static char **read_author_script(void) { struct strbuf script = STRBUF_INIT; @@ -979,7 +1024,9 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } } - if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { + if (is_rebase_i(opts) && write_author_script(msg.message) < 0) + res |= -1; + else if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { res |= do_recursive_merge(base, next, base_label, next_label, head, &msgbuf, opts); if (res < 0) From 31b30111bc29fd7362824034857df87b551c725a Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 9 Mar 2016 17:12:20 +0100 Subject: [PATCH 54/80] sequencer (rebase -i): allow continuing with staged changes When an interactive rebase is interrupted, the user may stage changes before continuing, and we need to commit those changes in that case. Signed-off-by: Johannes Schindelin --- sequencer.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/sequencer.c b/sequencer.c index ef818a2ffc..4ddb12ed8e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1807,6 +1807,41 @@ static int continue_single_pick(void) return run_command_v_opt(argv, RUN_GIT_CMD); } +static int commit_staged_changes(struct replay_opts *opts) +{ + int amend = 0; + + if (has_unstaged_changes(1)) + return error(_("Cannot rebase: You have unstaged changes.")); + if (!has_uncommitted_changes(0)) + return 0; + + if (file_exists(rebase_path_amend())) { + struct strbuf rev = STRBUF_INIT; + unsigned char head[20], to_amend[20]; + + if (get_sha1("HEAD", head)) + return error("Cannot amend non-existing commit"); + if (!read_oneliner(&rev, rebase_path_amend(), 0)) + return error("Invalid file: %s", rebase_path_amend()); + if (get_sha1_hex(rev.buf, to_amend)) + return error("Invalid contents: %s", + rebase_path_amend()); + if (hashcmp(head, to_amend)) + return error("\nYou have uncommitted changes in your " + "working tree. Please, commit them\nfirst and " + "then run 'git rebase --continue' again."); + + strbuf_release(&rev); + amend = 1; + } + + if (sequencer_commit(rebase_path_message(), opts, 1, 1, amend, 0)) + return error("Could not commit staged changes."); + unlink(rebase_path_amend()); + return 0; +} + int sequencer_continue(struct replay_opts *opts) { struct todo_list todo_list = TODO_LIST_INIT; @@ -1815,6 +1850,10 @@ int sequencer_continue(struct replay_opts *opts) if (read_and_refresh_cache(opts)) return -1; + if (is_rebase_i(opts)) { + if (commit_staged_changes(opts)) + return -1; + } if (!file_exists(get_todo_path(opts))) return continue_single_pick(); if (read_populate_opts(opts) || From df4d48f33ff31ef2ae445be18674ec3f58540d08 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Sat, 9 Apr 2016 16:29:21 +0200 Subject: [PATCH 55/80] sequencer (rebase -i): remove CHERRY_PICK_HEAD when no longer needed The scripted version of the interactive rebase already does that. Signed-off-by: Johannes Schindelin --- sequencer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 4ddb12ed8e..683b89ff10 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1813,8 +1813,13 @@ static int commit_staged_changes(struct replay_opts *opts) if (has_unstaged_changes(1)) return error(_("Cannot rebase: You have unstaged changes.")); - if (!has_uncommitted_changes(0)) + if (!has_uncommitted_changes(0)) { + const char *cherry_pick_head = git_path("CHERRY_PICK_HEAD"); + + if (file_exists(cherry_pick_head) && unlink(cherry_pick_head)) + return error("Could not remove CHERRY_PICK_HEAD"); return 0; + } if (file_exists(rebase_path_amend())) { struct strbuf rev = STRBUF_INIT; From 3a1417a67b17c057fe0c90b30c34e3d14fbf549f Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 31 Aug 2016 08:43:51 +0200 Subject: [PATCH 56/80] sequencer (rebase -i): skip some revert/cherry-pick specific code path When a cherry-pick continues without a "todo script", the intention is simply to pick a single commit. However, when an interactive rebase is continued without a "todo script", it means that the last command has been completed and that we now need to clean up. This commit guards the revert/cherry-pick specific steps so that they are not executed in rebase -i mode. Signed-off-by: Johannes Schindelin --- sequencer.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/sequencer.c b/sequencer.c index 683b89ff10..7f017a88e9 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1859,22 +1859,25 @@ int sequencer_continue(struct replay_opts *opts) if (commit_staged_changes(opts)) return -1; } - if (!file_exists(get_todo_path(opts))) + else if (!file_exists(get_todo_path(opts))) return continue_single_pick(); if (read_populate_opts(opts) || read_populate_todo(&todo_list, opts)) return -1; - /* Verify that the conflict has been resolved */ - if (file_exists(git_path_cherry_pick_head()) || - file_exists(git_path_revert_head())) { - int ret = continue_single_pick(); - if (ret) - return ret; + if (!is_rebase_i(opts)) { + /* Verify that the conflict has been resolved */ + if (file_exists(git_path_cherry_pick_head()) || + file_exists(git_path_revert_head())) { + int ret = continue_single_pick(); + if (ret) + return ret; + } + if (index_differs_from("HEAD", 0)) + return error_dirty_index(opts); + todo_list.current++; } - if (index_differs_from("HEAD", 0)) - return error_dirty_index(opts); - todo_list.current++; + res = pick_commits(&todo_list, opts); todo_list_release(&todo_list); return res; From 1ed867cdbca0351265f2b0fcc8d10366a6b94411 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:11:54 +0200 Subject: [PATCH 57/80] sequencer (rebase -i): the todo can be empty when continuing When the last command of an interactive rebase fails, the user needs to resolve the problem and then continue the interactive rebase. Naturally, the todo script is empty by then. So let's not complain about that! Signed-off-by: Johannes Schindelin --- sequencer.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index 7f017a88e9..d4437f5db9 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1249,8 +1249,6 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) fixup_okay = 1; p = *eol ? eol + 1 : eol; } - if (!todo_list->nr) - return error(_("No commits parsed.")); return res; } @@ -1273,6 +1271,9 @@ static int read_populate_todo(struct todo_list *todo_list, res = parse_insn_buffer(todo_list->buf.buf, todo_list); if (res) return error(_("Unusable instruction sheet: %s"), todo_file); + if (!todo_list->nr && + (!is_rebase_i(opts) || !file_exists(rebase_path_done()))) + return error(_("No commits parsed.")); return 0; } From 8dc2674ad2f2a0e0d751e876e1ace743d04eba0f Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:12:54 +0200 Subject: [PATCH 58/80] sequencer (rebase -i): update refs after a successful rebase An interactive rebase operates on a detached HEAD (to keep the reflog of the original branch relatively clean), and updates the branch only at the end. Now that the sequencer learns to perform interactive rebases, it also needs to learn the trick to update the branch before removing the directory containing the state of the interactive rebase. Signed-off-by: Johannes Schindelin --- sequencer.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index d4437f5db9..7662222a7e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -100,6 +100,8 @@ static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") +static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") +static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") /* We will introduce the 'interactive rebase' mode later */ static inline int is_rebase_i(const struct replay_opts *opts) @@ -1769,12 +1771,39 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) } if (is_rebase_i(opts)) { - struct strbuf buf = STRBUF_INIT; + struct strbuf head_ref = STRBUF_INIT, buf = STRBUF_INIT; /* Stopped in the middle, as planned? */ if (todo_list->current < todo_list->nr) return 0; + if (read_oneliner(&head_ref, rebase_path_head_name(), 0) && + starts_with(head_ref.buf, "refs/")) { + unsigned char head[20], orig[20]; + + if (get_sha1("HEAD", head)) + return error("Cannot read HEAD"); + if (!read_oneliner(&buf, rebase_path_orig_head(), 0) || + get_sha1_hex(buf.buf, orig)) + return error("Could not read orig-head"); + strbuf_addf(&buf, "rebase -i (finish): %s onto ", + head_ref.buf); + if (!read_oneliner(&buf, rebase_path_onto(), 0)) + return error("Could not read 'onto'"); + if (update_ref(buf.buf, head_ref.buf, head, orig, + REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) + return error("Could not update %s", + head_ref.buf); + strbuf_reset(&buf); + strbuf_addf(&buf, + "rebase -i (finish): returning to %s", + head_ref.buf); + if (create_symref("HEAD", head_ref.buf, buf.buf)) + return error("Could not update HEAD to %s", + head_ref.buf); + strbuf_reset(&buf); + } + if (opts->verbose) { const char *argv[] = { "diff-tree", "--stat", NULL, NULL @@ -1789,6 +1818,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) strbuf_reset(&buf); } strbuf_release(&buf); + strbuf_release(&head_ref); } /* From cade51f893ed381ed03718439c7dba3f5dcebba3 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 10 Mar 2016 21:47:32 +0100 Subject: [PATCH 59/80] sequencer (rebase -i): leave a patch upon error Just like the interactive rebase, we want to leave a 'patch' file for further inspection by the user (even if we never tried to actually apply that patch, since we're cherry-picking instead). Signed-off-by: Johannes Schindelin --- sequencer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sequencer.c b/sequencer.c index 7662222a7e..9a06b40ce3 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1753,6 +1753,9 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) return error_failed_squash(item->commit, opts, item->arg_len, item->arg); } + else if (res && is_rebase_i(opts)) + return res | error_with_patch(item->commit, + item->arg, item->arg_len, opts, res, 0); } else if (item->command == TODO_EXEC) { char *end_of_arg = (char *)(item->arg + item->arg_len); From 76ab1103be1a3414e200cb3766a00be049bbf03f Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 14:13:31 +0200 Subject: [PATCH 60/80] sequencer (rebase -i): implement the 'reword' command This is now trivial, as all the building blocks are in place: all we need to do is to flip the "edit" switch when committing. Signed-off-by: Johannes Schindelin --- sequencer.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index 9a06b40ce3..64fec478a4 100644 --- a/sequencer.c +++ b/sequencer.c @@ -746,6 +746,7 @@ enum todo_command { TODO_PICK, TODO_REVERT, TODO_EDIT, + TODO_REWORD, TODO_FIXUP, TODO_SQUASH, TODO_EXEC, @@ -759,6 +760,7 @@ static struct { { 'p', "pick" }, { 0, "revert" }, { 'e', "edit" }, + { 'r', "reword" }, { 'f', "fixup" }, { 's', "squash" }, { 'x', "exec" }, @@ -1004,7 +1006,9 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } } - if (is_fixup(command)) { + if (command == TODO_REWORD) + edit = 1; + else if (is_fixup(command)) { if (update_squash_messages(command, commit, opts)) return -1; amend = 1; @@ -1755,7 +1759,8 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) } else if (res && is_rebase_i(opts)) return res | error_with_patch(item->commit, - item->arg, item->arg_len, opts, res, 0); + item->arg, item->arg_len, opts, res, + item->command == TODO_REWORD); } else if (item->command == TODO_EXEC) { char *end_of_arg = (char *)(item->arg + item->arg_len); From 84b2be2078f4fb4853cb5725df9ae8e387dff42c Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 23 May 2016 16:56:21 +0200 Subject: [PATCH 61/80] sequencer (rebase -i): allow fast-forwarding for edit/reword The sequencer already knew how to fast-forward instead of cherry-picking, if possible. We want to continue to do this, of course, but in case of the 'reword' command, we will need to call `git commit` after fast-forwarding. Signed-off-by: Johannes Schindelin --- sequencer.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/sequencer.c b/sequencer.c index 64fec478a4..399fc8d39e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -896,7 +896,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, const char *base_label, *next_label; struct commit_message msg = { NULL, NULL, NULL, NULL }; struct strbuf msgbuf = STRBUF_INIT; - int res = 0, unborn = 0, amend = 0, allow; + int res = 0, unborn = 0, amend = 0, allow = 0; if (opts->no_commit) { /* @@ -942,11 +942,23 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, else parent = commit->parents->item; + if (get_message(commit, &msg) != 0) + return error(_("Cannot get commit message for %s"), + oid_to_hex(&commit->object.oid)); + if (opts->allow_ff && !is_fixup(command) && ((parent && !hashcmp(parent->object.oid.hash, head)) || - (!parent && unborn))) - return fast_forward_to(commit->object.oid.hash, head, unborn, opts); - + (!parent && unborn))) { + if (is_rebase_i(opts)) + write_author_script(msg.message); + res |= fast_forward_to(commit->object.oid.hash, head, unborn, + opts); + if (res || command != TODO_REWORD) + goto leave; + edit = amend = 1; + msg_file = NULL; + goto fast_forward_edit; + } if (parent && parse_commit(parent) < 0) /* TRANSLATORS: The first %s will be "revert" or "cherry-pick", the second %s a SHA1 */ @@ -954,10 +966,6 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, command_to_string(command), oid_to_hex(&parent->object.oid)); - if (get_message(commit, &msg) != 0) - return error(_("Cannot get commit message for %s"), - oid_to_hex(&commit->object.oid)); - /* * "commit" is an existing commit. We would want to apply * the difference it introduces since its first parent "prev" @@ -1083,6 +1091,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, goto leave; } if (!opts->no_commit) +fast_forward_edit: res |= sequencer_commit(msg_file, opts, allow, edit, amend, cleanup_commit_message); From 375b045469a7c240033eb27d14553e28c81ea9a3 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Sat, 9 Apr 2016 16:27:51 +0200 Subject: [PATCH 62/80] sequencer (rebase -i): refactor setting the reflog message This makes the code DRYer, with the obvious benefit that we can enhance the code further in a single place. We can also reuse the functionality elsewhere by calling this new function. Signed-off-by: Johannes Schindelin --- sequencer.c | 33 ++++++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/sequencer.c b/sequencer.c index 399fc8d39e..71730e60b1 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1726,6 +1726,26 @@ static int is_final_fixup(struct todo_list *todo_list) return 1; } +static const char *reflog_message(struct replay_opts *opts, + const char *sub_action, const char *fmt, ...) +{ + va_list ap; + static struct strbuf buf = STRBUF_INIT; + + va_start(ap, fmt); + strbuf_reset(&buf); + strbuf_addstr(&buf, action_name(opts)); + if (sub_action) + strbuf_addf(&buf, " (%s)", sub_action); + if (fmt) { + strbuf_addstr(&buf, ": "); + strbuf_vaddf(&buf, fmt, ap); + } + va_end(ap); + + return buf.buf; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { int res = 0; @@ -1796,6 +1816,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (read_oneliner(&head_ref, rebase_path_head_name(), 0) && starts_with(head_ref.buf, "refs/")) { + const char *msg; unsigned char head[20], orig[20]; if (get_sha1("HEAD", head)) @@ -1803,19 +1824,17 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (!read_oneliner(&buf, rebase_path_orig_head(), 0) || get_sha1_hex(buf.buf, orig)) return error("Could not read orig-head"); - strbuf_addf(&buf, "rebase -i (finish): %s onto ", - head_ref.buf); if (!read_oneliner(&buf, rebase_path_onto(), 0)) return error("Could not read 'onto'"); - if (update_ref(buf.buf, head_ref.buf, head, orig, + msg = reflog_message(opts, "finish", "%s onto %s", + head_ref.buf, buf.buf); + if (update_ref(msg, head_ref.buf, head, orig, REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) return error("Could not update %s", head_ref.buf); - strbuf_reset(&buf); - strbuf_addf(&buf, - "rebase -i (finish): returning to %s", + msg = reflog_message(opts, "finish", "returning to %s", head_ref.buf); - if (create_symref("HEAD", head_ref.buf, buf.buf)) + if (create_symref("HEAD", head_ref.buf, msg)) return error("Could not update HEAD to %s", head_ref.buf); strbuf_reset(&buf); From 4c90d25df32e296dbace2b47e6f985c283ee23b4 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Sat, 9 Apr 2016 16:28:07 +0200 Subject: [PATCH 63/80] sequencer (rebase -i): set the reflog message consistently We already used the same reflog message as the scripted version of rebase -i when finishing. With this commit, we do that also for all the commands before that. Signed-off-by: Johannes Schindelin --- sequencer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sequencer.c b/sequencer.c index 71730e60b1..54f654c091 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1768,6 +1768,10 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) unlink(rebase_path_amend()); } if (item->command <= TODO_SQUASH) { + if (is_rebase_i(opts)) + setenv("GIT_REFLOG_ACTION", reflog_message(opts, + command_to_string(item->command), NULL), + 1); res = do_pick_commit(item->command, item->commit, opts, is_final_fixup(todo_list)); if (item->command == TODO_EDIT) { From 7427d5a9e76264252540c72c5a70e71c3d470667 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 12 Apr 2016 17:26:31 +0200 Subject: [PATCH 64/80] sequencer (rebase -i): copy commit notes at end When rebasing commits that have commit notes attached, the interactive rebase rewrites those notes faithfully at the end. The sequencer must do this, too, if it wishes to do interactive rebase's job. Signed-off-by: Johannes Schindelin --- sequencer.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/sequencer.c b/sequencer.c index 54f654c091..a5e18f374e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -93,6 +93,15 @@ static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend") * the long commit name of the corresponding patch. */ static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") +/* + * For the post-rewrite hook, we make a list of rewritten commits and + * their new sha1s. The rewritten-pending list keeps the sha1s of + * commits that have been processed, but not committed yet, + * e.g. because they are waiting for a 'squash' command. + */ +static GIT_PATH_FUNC(rebase_path_rewritten_list, "rebase-merge/rewritten-list") +static GIT_PATH_FUNC(rebase_path_rewritten_pending, + "rebase-merge/rewritten-pending") /* * The following files are written by git-rebase just after parsing the * command-line (and are only consumed, not modified, by the sequencer). @@ -886,6 +895,43 @@ static int update_squash_messages(enum todo_command command, return write_message(&buf, rebase_path_squash_msg()); } +static void flush_rewritten_pending(void) { + struct strbuf buf = STRBUF_INIT; + unsigned char newsha1[20]; + FILE *out; + + if (strbuf_read_file(&buf, rebase_path_rewritten_pending(), 82) > 0 && + !get_sha1("HEAD", newsha1) && + (out = fopen(rebase_path_rewritten_list(), "a"))) { + char *bol = buf.buf, *eol; + + while (*bol) { + eol = strchrnul(bol, '\n'); + fprintf(out, "%.*s %s\n", (int)(eol - bol), + bol, sha1_to_hex(newsha1)); + if (!*eol) + break; + bol = eol + 1; + } + fclose(out); + unlink(rebase_path_rewritten_pending()); + } +} + +static void record_in_rewritten(struct object_id *oid, + enum todo_command next_command) { + FILE *out = fopen(rebase_path_rewritten_pending(), "a"); + + if (!out) + return; + + fprintf(out, "%s\n", oid_to_hex(oid)); + fclose(out); + + if (!is_fixup(next_command)) + flush_rewritten_pending(); +} + static int do_pick_commit(enum todo_command command, struct commit *commit, struct replay_opts *opts, int final_fixup) { @@ -1726,6 +1772,17 @@ static int is_final_fixup(struct todo_list *todo_list) return 1; } +static enum todo_command peek_command(struct todo_list *todo_list, int offset) +{ + int i; + + for (i = todo_list->current + offset; i < todo_list->nr; i++) + if (todo_list->items[i].command != TODO_NOOP) + return todo_list->items[i].command; + + return -1; +} + static const char *reflog_message(struct replay_opts *opts, const char *sub_action, const char *fmt, ...) { @@ -1784,6 +1841,9 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) item->arg, item->arg_len, opts, res, !res); } + if (is_rebase_i(opts) && !res) + record_in_rewritten(&item->commit->object.oid, + peek_command(todo_list, 1)); if (res && is_fixup(item->command)) { if (res == 1) intend_to_amend(); @@ -1813,6 +1873,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (is_rebase_i(opts)) { struct strbuf head_ref = STRBUF_INIT, buf = STRBUF_INIT; + struct stat st; /* Stopped in the middle, as planned? */ if (todo_list->current < todo_list->nr) @@ -1857,6 +1918,20 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) run_command_v_opt(argv, RUN_GIT_CMD); strbuf_reset(&buf); } + flush_rewritten_pending(); + if (!stat(rebase_path_rewritten_list(), &st) && + st.st_size > 0) { + struct child_process child = CHILD_PROCESS_INIT; + + child.in = open(rebase_path_rewritten_list(), O_RDONLY); + child.git_cmd = 1; + argv_array_push(&child.args, "notes"); + argv_array_push(&child.args, "copy"); + argv_array_push(&child.args, "--for-rewrite=rebase"); + /* we don't care if this copying failed */ + run_command(&child); + } + strbuf_release(&buf); strbuf_release(&head_ref); } From 556caa4188ba74731c84947b26b91939eb0a98a7 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 8 Apr 2016 17:30:25 +0200 Subject: [PATCH 65/80] sequencer (rebase -i): record interrupted commits in rewritten, too When continuing after a `pick` command failed, we want that commit to show up in the rewritten-list (and its notes to be rewritten), too. Signed-off-by: Johannes Schindelin --- sequencer.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sequencer.c b/sequencer.c index a5e18f374e..a00d34920c 100644 --- a/sequencer.c +++ b/sequencer.c @@ -2023,6 +2023,17 @@ int sequencer_continue(struct replay_opts *opts) return error_dirty_index(opts); todo_list.current++; } + else if (file_exists(rebase_path_stopped_sha())) { + struct strbuf buf = STRBUF_INIT; + struct object_id oid; + + if (read_oneliner(&buf, rebase_path_stopped_sha(), 1)) { + if (!get_sha1_committish(buf.buf, oid.hash)) + record_in_rewritten(&oid, + peek_command(&todo_list, 0)); + } + strbuf_release(&buf); + } res = pick_commits(&todo_list, opts); todo_list_release(&todo_list); From 22df98870d37c140296439115f32706cc8e436c2 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 8 Apr 2016 17:27:03 +0200 Subject: [PATCH 66/80] sequencer (rebase -i): run the post-rewrite hook, if needed Signed-off-by: Johannes Schindelin --- sequencer.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/sequencer.c b/sequencer.c index a00d34920c..153116ebee 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1922,6 +1922,8 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (!stat(rebase_path_rewritten_list(), &st) && st.st_size > 0) { struct child_process child = CHILD_PROCESS_INIT; + const char *post_rewrite_hook = + find_hook("post-rewrite"); child.in = open(rebase_path_rewritten_list(), O_RDONLY); child.git_cmd = 1; @@ -1930,6 +1932,17 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) argv_array_push(&child.args, "--for-rewrite=rebase"); /* we don't care if this copying failed */ run_command(&child); + + if (post_rewrite_hook) { + struct child_process hook = CHILD_PROCESS_INIT; + + hook.in = open(rebase_path_rewritten_list(), + O_RDONLY); + argv_array_push(&hook.args, post_rewrite_hook); + argv_array_push(&hook.args, "rebase"); + /* we don't care if this hook failed */ + run_command(&hook); + } } strbuf_release(&buf); From 7329458d8dafa92e7d7a6275ff03b90b1035a72f Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 8 Apr 2016 16:05:06 +0200 Subject: [PATCH 67/80] sequencer (rebase -i): respect the rebase.autostash setting Git's `rebase` command inspects the `rebase.autostash` config setting to determine whether it should stash any uncommitted changes before rebasing and re-apply them afterwards. As we introduce more bits and pieces to let the sequencer act as interactive rebase's backend, here is the part that adds support for the autostash feature. Signed-off-by: Johannes Schindelin --- sequencer.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/sequencer.c b/sequencer.c index 153116ebee..2922837733 100644 --- a/sequencer.c +++ b/sequencer.c @@ -111,6 +111,7 @@ static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") +static GIT_PATH_FUNC(rebase_path_autostash, "rebase-merge/autostash") /* We will introduce the 'interactive rebase' mode later */ static inline int is_rebase_i(const struct replay_opts *opts) @@ -1783,6 +1784,47 @@ static enum todo_command peek_command(struct todo_list *todo_list, int offset) return -1; } +static int apply_autostash(struct replay_opts *opts) +{ + struct strbuf stash_sha1 = STRBUF_INIT; + struct child_process child = CHILD_PROCESS_INIT; + int ret = 0; + + if (!read_oneliner(&stash_sha1, rebase_path_autostash(), 1)) { + strbuf_release(&stash_sha1); + return 0; + } + strbuf_trim(&stash_sha1); + + child.git_cmd = 1; + argv_array_push(&child.args, "stash"); + argv_array_push(&child.args, "apply"); + argv_array_push(&child.args, stash_sha1.buf); + if (!run_command(&child)) + printf(_("Applied autostash.")); + else { + struct child_process store = CHILD_PROCESS_INIT; + + store.git_cmd = 1; + argv_array_push(&store.args, "stash"); + argv_array_push(&store.args, "store"); + argv_array_push(&store.args, "-m"); + argv_array_push(&store.args, "autostash"); + argv_array_push(&store.args, "-q"); + argv_array_push(&store.args, stash_sha1.buf); + if (run_command(&store)) + ret = error(_("Cannot store %s"), stash_sha1.buf); + else + printf(_("Applying autostash resulted in conflicts.\n" + "Your changes are safe in the stash.\n" + "You can run \"git stash pop\" or" + " \"git stash drop\" at any time.\n")); + } + + strbuf_release(&stash_sha1); + return ret; +} + static const char *reflog_message(struct replay_opts *opts, const char *sub_action, const char *fmt, ...) { @@ -1944,6 +1986,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) run_command(&hook); } } + apply_autostash(opts); strbuf_release(&buf); strbuf_release(&head_ref); From 4148c74b28d6e62f507a88a588ea90dc9924a672 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 30 Mar 2016 17:58:55 +0200 Subject: [PATCH 68/80] sequencer (rebase -i): respect strategy/strategy_opts settings The sequencer already has an idea about using different merge strategies. We just piggy-back on top of that, using rebase -i's own settings, when running the sequencer in interactive rebase mode. Signed-off-by: Johannes Schindelin --- sequencer.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/sequencer.c b/sequencer.c index 2922837733..5f5fb9f70c 100644 --- a/sequencer.c +++ b/sequencer.c @@ -112,6 +112,8 @@ static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") static GIT_PATH_FUNC(rebase_path_autostash, "rebase-merge/autostash") +static GIT_PATH_FUNC(rebase_path_strategy, "rebase-merge/strategy") +static GIT_PATH_FUNC(rebase_path_strategy_opts, "rebase-merge/strategy_opts") /* We will introduce the 'interactive rebase' mode later */ static inline int is_rebase_i(const struct replay_opts *opts) @@ -1404,6 +1406,26 @@ static int read_populate_opts(struct replay_opts *opts) if (file_exists(rebase_path_verbose())) opts->verbose = 1; + if (read_oneliner(&buf, rebase_path_strategy(), 0)) { + opts->strategy = + sequencer_entrust(opts, + strbuf_detach(&buf, NULL)); + if (read_oneliner(&buf, + rebase_path_strategy_opts(), 0)) { + int i; + opts->xopts_nr = split_cmdline(buf.buf, + &opts->xopts); + for (i = 0; i < opts->xopts_nr; i++) + skip_prefix(opts->xopts[i], "--", + &opts->xopts[i]); + if (opts->xopts_nr) + sequencer_entrust(opts, + strbuf_detach(&buf, NULL)); + else + strbuf_release(&buf); + } + } + return 0; } From 7e3a0120e1da6ccad814d3ab3826d9ef6faa68e7 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 7 Apr 2016 16:31:59 +0200 Subject: [PATCH 69/80] sequencer (rebase -i): allow rescheduling commands The interactive rebase has the very special magic that a cherry-pick that exits with a status different from 0 and 1 signifies a failure to even record that a cherry-pick was started. This can happen e.g. when a fast-forward fails because it would overwrite untracked files. In that case, we must reschedule the command that we thought we already had at least started successfully. Signed-off-by: Johannes Schindelin --- sequencer.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sequencer.c b/sequencer.c index 5f5fb9f70c..366ee78120 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1895,6 +1895,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) 1); res = do_pick_commit(item->command, item->commit, opts, is_final_fixup(todo_list)); + if (is_rebase_i(opts) && res < 0) { + /* Reschedule */ + todo_list->current--; + if (save_todo(todo_list, opts)) + return -1; + } if (item->command == TODO_EDIT) { struct commit *commit = item->commit; if (!res) From 34bb14c610acc230d55d41c440c5763768c51814 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 13 Apr 2016 15:18:29 +0200 Subject: [PATCH 70/80] sequencer (rebase -i): implement the 'drop' command The parsing part of a 'drop' command is almost identical to parsing a 'pick', while the operation is the same as that of a 'noop'. Signed-off-by: Johannes Schindelin --- sequencer.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/sequencer.c b/sequencer.c index 366ee78120..51c2f7684c 100644 --- a/sequencer.c +++ b/sequencer.c @@ -762,7 +762,8 @@ enum todo_command { TODO_FIXUP, TODO_SQUASH, TODO_EXEC, - TODO_NOOP + TODO_NOOP, + TODO_DROP }; static struct { @@ -776,7 +777,8 @@ static struct { { 'f', "fixup" }, { 's', "squash" }, { 'x', "exec" }, - { 0, "noop" } + { 0, "noop" }, + { 'd', "drop" } }; static const char *command_to_string(const enum todo_command command) @@ -1309,7 +1311,7 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) else if (is_fixup(item->command)) return error("Cannot '%s' without a previous commit", command_to_string(item->command)); - else if (item->command != TODO_NOOP) + else if (item->command < TODO_NOOP) fixup_okay = 1; p = *eol ? eol + 1 : eol; } @@ -1800,7 +1802,7 @@ static enum todo_command peek_command(struct todo_list *todo_list, int offset) int i; for (i = todo_list->current + offset; i < todo_list->nr; i++) - if (todo_list->items[i].command != TODO_NOOP) + if (todo_list->items[i].command < TODO_NOOP) return todo_list->items[i].command; return -1; @@ -1933,7 +1935,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) res = do_exec(item->arg); *end_of_arg = saved; } - else if (item->command != TODO_NOOP) + else if (item->command < TODO_NOOP) return error("Unknown command %d", item->command); todo_list->current++; From 736bcb8e860c876e32e8f89f68b0b901abedc187 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 8 Apr 2016 08:45:17 +0200 Subject: [PATCH 71/80] sequencer (rebase -i): differentiate between comments and 'noop' In the upcoming patch, we will support rebase -i's progress reporting. The progress skips comments but counts 'noop's. Signed-off-by: Johannes Schindelin --- sequencer.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/sequencer.c b/sequencer.c index 51c2f7684c..4c902e5ff9 100644 --- a/sequencer.c +++ b/sequencer.c @@ -763,7 +763,8 @@ enum todo_command { TODO_SQUASH, TODO_EXEC, TODO_NOOP, - TODO_DROP + TODO_DROP, + TODO_COMMENT }; static struct { @@ -778,12 +779,13 @@ static struct { { 's', "squash" }, { 'x', "exec" }, { 0, "noop" }, - { 'd', "drop" } + { 'd', "drop" }, + { 0, NULL } }; static const char *command_to_string(const enum todo_command command) { - if (command < ARRAY_SIZE(todo_command_info)) + if (command < TODO_COMMENT) return todo_command_info[command].str; die("Unknown command: %d", command); } @@ -1235,14 +1237,14 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) bol += strspn(bol, " \t"); if (bol == eol || *bol == '\r' || *bol == comment_line_char) { - item->command = TODO_NOOP; + item->command = TODO_COMMENT; item->commit = NULL; item->arg = bol; item->arg_len = eol - bol; return 0; } - for (i = 0; i < ARRAY_SIZE(todo_command_info); i++) + for (i = 0; i < TODO_COMMENT; i++) if (skip_prefix(bol, todo_command_info[i].str, &bol)) { item->command = i; break; @@ -1252,7 +1254,7 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) item->command = i; break; } - if (i >= ARRAY_SIZE(todo_command_info)) + if (i >= TODO_COMMENT) return -1; if (item->command == TODO_NOOP) { From 6383b7afcdeb6c999862aa32ba437997f2dd3d4e Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 12 Apr 2016 14:54:20 +0200 Subject: [PATCH 72/80] run_command_opt(): optionally hide stderr when the command succeeds This will be needed to hide the output of `git commit` when the sequencer handles an interactive rebase's script. Signed-off-by: Johannes Schindelin --- run-command.c | 23 +++++++++++++++++++++++ run-command.h | 1 + 2 files changed, 24 insertions(+) diff --git a/run-command.c b/run-command.c index 5a4dbb66d7..921e43c4ea 100644 --- a/run-command.c +++ b/run-command.c @@ -575,6 +575,29 @@ int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const cmd.clean_on_exit = opt & RUN_CLEAN_ON_EXIT ? 1 : 0; cmd.dir = dir; cmd.env = env; + + if (opt & RUN_HIDE_STDERR_ON_SUCCESS) { + struct strbuf buf = STRBUF_INIT; + int res; + + cmd.err = -1; + if (start_command(&cmd) < 0) + return -1; + + if (strbuf_read(&buf, cmd.err, 0) < 0) { + close(cmd.err); + finish_command(&cmd); /* throw away exit code */ + return -1; + } + + close(cmd.err); + res = finish_command(&cmd); + if (res) + fputs(buf.buf, stderr); + strbuf_release(&buf); + return res; + } + return run_command(&cmd); } diff --git a/run-command.h b/run-command.h index 50666497ae..f87d01a0d6 100644 --- a/run-command.h +++ b/run-command.h @@ -70,6 +70,7 @@ extern int run_hook_ve(const char *const *env, const char *name, va_list args); #define RUN_SILENT_EXEC_FAILURE 8 #define RUN_USING_SHELL 16 #define RUN_CLEAN_ON_EXIT 32 +#define RUN_HIDE_STDERR_ON_SUCCESS 64 int run_command_v_opt(const char **argv, int opt); /* From 2b8220c24c1c9094783f7626f5f40dc2db8855c1 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 12 Apr 2016 14:56:52 +0200 Subject: [PATCH 73/80] sequencer (rebase -i): show only failed `git commit`'s output This is the behavior of the shell script version of the interactive rebase, by using the `output` function defined in `git-rebase.sh`. Signed-off-by: Johannes Schindelin --- sequencer.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index 4c902e5ff9..22568d2ce6 100644 --- a/sequencer.c +++ b/sequencer.c @@ -640,10 +640,15 @@ int sequencer_commit(const char *defmsg, struct replay_opts *opts, { char **env = NULL; struct argv_array array; - int rc; + int opt = RUN_GIT_CMD, rc; const char *value; if (is_rebase_i(opts)) { + if (!edit) { + opt |= RUN_COMMAND_STDOUT_TO_STDERR; + opt |= RUN_HIDE_STDERR_ON_SUCCESS; + } + env = read_author_script(); if (!env) { const char *gpg_opt = gpg_sign_opt_quoted(opts); @@ -688,7 +693,7 @@ int sequencer_commit(const char *defmsg, struct replay_opts *opts, if (opts->allow_empty_message) argv_array_push(&array, "--allow-empty-message"); - rc = run_command_v_opt_cd_env(array.argv, RUN_GIT_CMD, NULL, + rc = run_command_v_opt_cd_env(array.argv, opt, NULL, (const char *const *)env); argv_array_clear(&array); free(env); From 660acea3122b6379c7545b04fbecd94243c9fd02 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 12 Apr 2016 14:56:52 +0200 Subject: [PATCH 74/80] sequencer (rebase -i): show only failed cherry-picks' output This is the behavior of the shell script version of the interactive rebase, by using the `output` function defined in `git-rebase.sh`. Signed-off-by: Johannes Schindelin --- sequencer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sequencer.c b/sequencer.c index 22568d2ce6..b34c3816aa 100644 --- a/sequencer.c +++ b/sequencer.c @@ -477,6 +477,8 @@ static int do_recursive_merge(struct commit *base, struct commit *next, o.ancestor = base ? base_label : "(empty tree)"; o.branch1 = "HEAD"; o.branch2 = next ? next_label : "(empty tree)"; + if (is_rebase_i(opts)) + o.buffer_output = 2; head_tree = parse_tree_indirect(head); next_tree = next ? next->tree : empty_tree(); @@ -488,6 +490,8 @@ static int do_recursive_merge(struct commit *base, struct commit *next, clean = merge_trees(&o, head_tree, next_tree, base_tree, &result); + if (is_rebase_i(opts) && clean <= 0) + fputs(o.obuf.buf, stdout); strbuf_release(&o.obuf); if (clean < 0) return clean; From fa3efbbadd7eeb9b7e357c5e6fa23e737fc5e048 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 21 Apr 2016 12:51:50 +0200 Subject: [PATCH 75/80] sequencer (rebase -i): suggest --edit-todo upon unknown command This is the same behavior as known from `git rebase -i`. Signed-off-by: Johannes Schindelin --- sequencer.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index b34c3816aa..89fd6259bc 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1346,8 +1346,12 @@ static int read_populate_todo(struct todo_list *todo_list, close(fd); res = parse_insn_buffer(todo_list->buf.buf, todo_list); - if (res) + if (res) { + if (is_rebase_i(opts)) + return error("Please fix this using " + "'git rebase --edit-todo'."); return error(_("Unusable instruction sheet: %s"), todo_file); + } if (!todo_list->nr && (!is_rebase_i(opts) || !file_exists(rebase_path_done()))) return error(_("No commits parsed.")); From 3207457a57d056c3054faf718128fb5c806cb032 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 8 Apr 2016 15:51:19 +0200 Subject: [PATCH 76/80] sequencer (rebase -i): show the progress The interactive rebase keeps the user informed about its progress. If the sequencer wants to do the grunt work of the interactive rebase, it also needs to show that progress. Signed-off-by: Johannes Schindelin --- sequencer.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/sequencer.c b/sequencer.c index 89fd6259bc..e8c6daf19c 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1218,6 +1218,7 @@ struct todo_list { struct strbuf buf; struct todo_item *items; int nr, alloc, current; + int done_nr, total_nr; }; #define TODO_LIST_INIT { STRBUF_INIT } @@ -1329,6 +1330,17 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) return res; } +static int count_commands(struct todo_list *todo_list) +{ + int count = 0, i; + + for (i = 0; i < todo_list->nr; i++) + if (todo_list->items[i].command != TODO_COMMENT) + count++; + + return count; +} + static int read_populate_todo(struct todo_list *todo_list, struct replay_opts *opts) { @@ -1355,6 +1367,22 @@ static int read_populate_todo(struct todo_list *todo_list, if (!todo_list->nr && (!is_rebase_i(opts) || !file_exists(rebase_path_done()))) return error(_("No commits parsed.")); + + if (is_rebase_i(opts)) { + struct todo_list done = TODO_LIST_INIT; + + if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 && + !parse_insn_buffer(done.buf.buf, &done)) + todo_list->done_nr = count_commands(&done); + else + todo_list->done_nr = 0; + + todo_list->total_nr = todo_list->done_nr + + count_commands(todo_list); + + todo_list_release(&done); + } + return 0; } @@ -1900,6 +1928,11 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (save_todo(todo_list, opts)) return -1; if (is_rebase_i(opts)) { + if (item->command != TODO_COMMENT) + fprintf(stderr, "Rebasing (%d/%d)%s", + ++(todo_list->done_nr), + todo_list->total_nr, + opts->verbose ? "\n" : "\r"); unlink(rebase_path_message()); unlink(rebase_path_author_script()); unlink(rebase_path_stopped_sha()); From 479efdc7e7c4f7bf92cce7a7033c5d27df9606ca Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 8 Apr 2016 16:40:13 +0200 Subject: [PATCH 77/80] sequencer (rebase -i): write the progress into files For the benefit of e.g. the shell prompt, the interactive rebase not only displays the progress for the user to see, but also writes it into the msgnum/end files in the state directory. Teach the sequencer this new trick. Signed-off-by: Johannes Schindelin --- sequencer.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index e8c6daf19c..9a8069e5b6 100644 --- a/sequencer.c +++ b/sequencer.c @@ -44,6 +44,16 @@ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") * actions. */ static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") +/* + * The file to keep track of how many commands were already processed (e.g. + * for the prompt). + */ +static GIT_PATH_FUNC(rebase_path_msgnum, "rebase-merge/msgnum"); +/* + * The file to keep track of how many commands are to be processed in total + * (e.g. for the prompt). + */ +static GIT_PATH_FUNC(rebase_path_msgtotal, "rebase-merge/end"); /* * The commit message that is planned to be used for any changes that * need to be committed following a user interaction. @@ -1370,17 +1380,22 @@ static int read_populate_todo(struct todo_list *todo_list, if (is_rebase_i(opts)) { struct todo_list done = TODO_LIST_INIT; + FILE *f = fopen(rebase_path_msgtotal(), "w"); if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 && !parse_insn_buffer(done.buf.buf, &done)) todo_list->done_nr = count_commands(&done); else todo_list->done_nr = 0; + todo_list_release(&done); todo_list->total_nr = todo_list->done_nr + count_commands(todo_list); - todo_list_release(&done); + if (f) { + fprintf(f, "%d\n", todo_list->total_nr); + fclose(f); + } } return 0; @@ -1928,11 +1943,20 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (save_todo(todo_list, opts)) return -1; if (is_rebase_i(opts)) { - if (item->command != TODO_COMMENT) + if (item->command != TODO_COMMENT) { + FILE *f = fopen(rebase_path_msgnum(), "w"); + + todo_list->done_nr++; + + if (f) { + fprintf(f, "%d\n", todo_list->done_nr); + fclose(f); + } fprintf(stderr, "Rebasing (%d/%d)%s", - ++(todo_list->done_nr), + todo_list->done_nr, todo_list->total_nr, opts->verbose ? "\n" : "\r"); + } unlink(rebase_path_message()); unlink(rebase_path_author_script()); unlink(rebase_path_stopped_sha()); From 02db26b4320bd9f8296358acd2a493555acae9aa Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 8 Apr 2016 17:28:04 +0200 Subject: [PATCH 78/80] sequencer (rebase -i): write out the final message The shell script version of the interactive rebase has a very specific final message. Teach the sequencer to print the same. Signed-off-by: Johannes Schindelin --- sequencer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sequencer.c b/sequencer.c index 9a8069e5b6..6064018e33 100644 --- a/sequencer.c +++ b/sequencer.c @@ -2090,6 +2090,9 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) } apply_autostash(opts); + fprintf(stderr, "Successfully rebased and updated %s.\n", + head_ref.buf); + strbuf_release(&buf); strbuf_release(&head_ref); } From 729b265c1ac7bfff2b60bae6388ddfaf918389b7 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Tue, 12 Apr 2016 16:02:27 +0200 Subject: [PATCH 79/80] Add a builtin helper for interactive rebases Git's interactive rebase is still implemented as a shell script, despite its complexity. This implies that it suffers from the portability point of view, from lack of expressibility, and of course also from performance. The latter issue is particularly serious on Windows, where we pay a hefty price for relying so much on POSIX. Unfortunately, being such a huge shell script also means that we missed the train when it would have been relatively easy to port it to C, and instead piled feature upon feature onto that poor script that originally never intended to be more than a slightly pimped cherry-pick in a loop. To open the road toward better performance (in addition to all the other benefits of C over shell scripts), let's just start *somewhere*. The approach taken here is to add a builtin helper that at first intends to take care of the parts of the interactive rebase that are most affected by the performance penalties mentioned above. Once that is in place, we can work gradually on tackling the rest of the technical debt. Signed-off-by: Johannes Schindelin --- .gitignore | 1 + Makefile | 1 + builtin.h | 1 + builtin/rebase--helper.c | 40 ++++++++++++++++++++++++++++++++++++++++ git.c | 1 + 5 files changed, 44 insertions(+) create mode 100644 builtin/rebase--helper.c diff --git a/.gitignore b/.gitignore index 05cb58a3d4..a9b8c968c9 100644 --- a/.gitignore +++ b/.gitignore @@ -114,6 +114,7 @@ /git-read-tree /git-rebase /git-rebase--am +/git-rebase--helper /git-rebase--interactive /git-rebase--merge /git-receive-pack diff --git a/Makefile b/Makefile index d96ecb7141..980e1dc891 100644 --- a/Makefile +++ b/Makefile @@ -919,6 +919,7 @@ BUILTIN_OBJS += builtin/prune.o BUILTIN_OBJS += builtin/pull.o BUILTIN_OBJS += builtin/push.o BUILTIN_OBJS += builtin/read-tree.o +BUILTIN_OBJS += builtin/rebase--helper.o BUILTIN_OBJS += builtin/receive-pack.o BUILTIN_OBJS += builtin/reflog.o BUILTIN_OBJS += builtin/remote.o diff --git a/builtin.h b/builtin.h index 6b95006a0a..2e5de141eb 100644 --- a/builtin.h +++ b/builtin.h @@ -102,6 +102,7 @@ extern int cmd_prune_packed(int argc, const char **argv, const char *prefix); extern int cmd_pull(int argc, const char **argv, const char *prefix); extern int cmd_push(int argc, const char **argv, const char *prefix); extern int cmd_read_tree(int argc, const char **argv, const char *prefix); +extern int cmd_rebase__helper(int argc, const char **argv, const char *prefix); extern int cmd_receive_pack(int argc, const char **argv, const char *prefix); extern int cmd_reflog(int argc, const char **argv, const char *prefix); extern int cmd_remote(int argc, const char **argv, const char *prefix); diff --git a/builtin/rebase--helper.c b/builtin/rebase--helper.c new file mode 100644 index 0000000000..ca1ebb2fa1 --- /dev/null +++ b/builtin/rebase--helper.c @@ -0,0 +1,40 @@ +#include "builtin.h" +#include "cache.h" +#include "parse-options.h" +#include "sequencer.h" + +static const char * const builtin_rebase_helper_usage[] = { + N_("git rebase--helper []"), + NULL +}; + +int cmd_rebase__helper(int argc, const char **argv, const char *prefix) +{ + struct replay_opts opts = REPLAY_OPTS_INIT; + enum { + CONTINUE = 1, ABORT + } command = 0; + struct option options[] = { + OPT_BOOL(0, "ff", &opts.allow_ff, N_("allow fast-forward")), + OPT_CMDMODE(0, "continue", &command, N_("continue rebase"), + CONTINUE), + OPT_CMDMODE(0, "abort", &command, N_("abort rebase"), + ABORT), + OPT_END() + }; + + git_config(git_default_config, NULL); + + opts.action = REPLAY_INTERACTIVE_REBASE; + opts.allow_ff = 1; + opts.allow_empty = 1; + + argc = parse_options(argc, argv, NULL, options, + builtin_rebase_helper_usage, PARSE_OPT_KEEP_ARGV0); + + if (command == CONTINUE && argc == 1) + return !!sequencer_continue(&opts); + if (command == ABORT && argc == 1) + return !!sequencer_remove_state(&opts); + usage_with_options(builtin_rebase_helper_usage, options); +} diff --git a/git.c b/git.c index 0f1937fd0c..26b4ad3bee 100644 --- a/git.c +++ b/git.c @@ -451,6 +451,7 @@ static struct cmd_struct commands[] = { { "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE }, { "push", cmd_push, RUN_SETUP }, { "read-tree", cmd_read_tree, RUN_SETUP }, + { "rebase--helper", cmd_rebase__helper, RUN_SETUP | NEED_WORK_TREE }, { "receive-pack", cmd_receive_pack }, { "reflog", cmd_reflog, RUN_SETUP }, { "remote", cmd_remote, RUN_SETUP }, From e1795cfaa1a017664063392b5655f94c23bff982 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 28 Mar 2016 13:34:50 +0200 Subject: [PATCH 80/80] rebase -i: use the rebase--helper builtin Now that the sequencer learned to process a "normal" interactive rebase, we use it. The original shell script is still used for "non-normal" interactive rebases, i.e. when --root or --preserve-merges was passed. Please note that the --root option (via the $squash_onto variable) needs special handling only for the very first command, hence it is still okay to use the helper upon continue/skip. Also please note that the --no-ff setting is volatile, i.e. when the interactive rebase is interrupted at any stage, there is no record of it. Therefore, we have to pass it from the shell script to the rebase--helper. Signed-off-by: Johannes Schindelin --- git-rebase--interactive.sh | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index 7e558b068c..022766be70 100644 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -1059,6 +1059,10 @@ git_rebase__interactive () { case "$action" in continue) + if test ! -d "$rewritten" + then + exec git rebase--helper ${force_rebase:+--no-ff} --continue + fi # do we have anything to commit? if git diff-index --cached --quiet HEAD -- then @@ -1118,6 +1122,10 @@ first and then run 'git rebase --continue' again.")" skip) git rerere clear + if test ! -d "$rewritten" + then + exec git rebase--helper ${force_rebase:+--no-ff} --continue + fi do_rest return 0 ;; @@ -1307,6 +1315,11 @@ expand_todo_ids test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks checkout_onto +if test -z "$rebase_root" && test ! -d "$rewritten" +then + require_clean_work_tree "rebase" + exec git rebase--helper ${force_rebase:+--no-ff} --continue +fi do_rest }