From 5a8ed3fe450caad740b1c236b3f14151f84bed05 Mon Sep 17 00:00:00 2001 From: Ghanshyam Thakkar Date: Tue, 13 Feb 2024 05:35:29 +0530 Subject: [PATCH 1/2] add-patch: classify '@' as a synonym for 'HEAD' Currently, (restore, checkout, reset) commands correctly take '@' as a synonym for 'HEAD'. However, in patch mode different prompts/messages are given on command line due to patch mode machinery not considering '@' to be a synonym for 'HEAD' due to literal string comparison with the word 'HEAD', and therefore assigning patch_mode_($command)_nothead and triggering reverse mode (-R in diff-index). The NEEDSWORK comment suggested comparing commit objects to get around this. However, doing so would also take a non-checked out branch pointing to the same commit as HEAD, as HEAD. This would cause confusion to the user. Therefore, after parsing '@', replace it with 'HEAD' as reasonably early as possible. This also solves another problem of disparity between 'git checkout HEAD' and 'git checkout @' (latter detaches at the HEAD commit and the former does not). Trade-offs: - Some of the errors would show the revision argument as 'HEAD' when given '@'. This should be fine, as most users who probably use '@' would be aware that it is a shortcut for 'HEAD' and most probably used to use 'HEAD'. There is also relevant documentation in 'gitrevisions' manpage about '@' being the shortcut for 'HEAD'. Also, the simplicity of the solution far outweighs this cost. - Consider '@' as a shortcut for 'HEAD' even if 'refs/heads/@' exists at a different commit. Naming a branch '@' is an obvious foot-gun and many existing commands already take '@' for 'HEAD' even if 'refs/heads/@' exists at a different commit or does not exist at all (e.g. 'git log @', 'git push origin @' etc.). Therefore this is an existing assumption and should not be a problem. Helped-by: Junio C Hamano Helped-by: Phillip Wood Signed-off-by: Ghanshyam Thakkar Signed-off-by: Junio C Hamano --- add-patch.c | 8 -------- builtin/checkout.c | 4 +++- builtin/reset.c | 4 +++- t/t2016-checkout-patch.sh | 42 ++++++++++++++++++++++---------------- t/t2020-checkout-detach.sh | 12 +++++++++++ t/t2071-restore-patch.sh | 18 +++++++++------- t/t7105-reset-patch.sh | 16 +++++++++------ 7 files changed, 63 insertions(+), 41 deletions(-) diff --git a/add-patch.c b/add-patch.c index 79eda168eb..68f525b35c 100644 --- a/add-patch.c +++ b/add-patch.c @@ -1729,14 +1729,6 @@ int run_add_p(struct repository *r, enum add_p_mode mode, if (mode == ADD_P_STASH) s.mode = &patch_mode_stash; else if (mode == ADD_P_RESET) { - /* - * NEEDSWORK: Instead of comparing to the literal "HEAD", - * compare the commit objects instead so that other ways of - * saying the same thing (such as "@") are also handled - * appropriately. - * - * This applies to the cases below too. - */ if (!revision || !strcmp(revision, "HEAD")) s.mode = &patch_mode_reset_head; else diff --git a/builtin/checkout.c b/builtin/checkout.c index a6e30931b5..067c251933 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -1224,7 +1224,9 @@ static void setup_new_branch_info_and_source_tree( struct tree **source_tree = &opts->source_tree; struct object_id branch_rev; - new_branch_info->name = xstrdup(arg); + /* treat '@' as a shortcut for 'HEAD' */ + new_branch_info->name = !strcmp(arg, "@") ? xstrdup("HEAD") : + xstrdup(arg); setup_branch_path(new_branch_info); if (!check_refname_format(new_branch_info->path, 0) && diff --git a/builtin/reset.c b/builtin/reset.c index 8390bfe4c4..f0bf29a478 100644 --- a/builtin/reset.c +++ b/builtin/reset.c @@ -281,7 +281,9 @@ static void parse_args(struct pathspec *pathspec, verify_filename(prefix, argv[0], 1); } } - *rev_ret = rev; + + /* treat '@' as a shortcut for 'HEAD' */ + *rev_ret = !strcmp("@", rev) ? "HEAD" : rev; parse_pathspec(pathspec, 0, PATHSPEC_PREFER_FULL | diff --git a/t/t2016-checkout-patch.sh b/t/t2016-checkout-patch.sh index 747eb5563e..c4f9bf09aa 100755 --- a/t/t2016-checkout-patch.sh +++ b/t/t2016-checkout-patch.sh @@ -38,26 +38,32 @@ test_expect_success 'git checkout -p with staged changes' ' verify_state dir/foo index index ' -test_expect_success 'git checkout -p HEAD with NO staged changes: abort' ' - set_and_save_state dir/foo work head && - test_write_lines n y n | git checkout -p HEAD && - verify_saved_state bar && - verify_saved_state dir/foo -' +for opt in "HEAD" "@" +do + test_expect_success "git checkout -p $opt with NO staged changes: abort" ' + set_and_save_state dir/foo work head && + test_write_lines n y n | git checkout -p $opt >output && + verify_saved_state bar && + verify_saved_state dir/foo && + test_grep "Discard" output + ' -test_expect_success 'git checkout -p HEAD with NO staged changes: apply' ' - test_write_lines n y y | git checkout -p HEAD && - verify_saved_state bar && - verify_state dir/foo head head -' + test_expect_success "git checkout -p $opt with NO staged changes: apply" ' + test_write_lines n y y | git checkout -p $opt >output && + verify_saved_state bar && + verify_state dir/foo head head && + test_grep "Discard" output + ' -test_expect_success 'git checkout -p HEAD with change already staged' ' - set_state dir/foo index index && - # the third n is to get out in case it mistakenly does not apply - test_write_lines n y n | git checkout -p HEAD && - verify_saved_state bar && - verify_state dir/foo head head -' + test_expect_success "git checkout -p $opt with change already staged" ' + set_state dir/foo index index && + # the third n is to get out in case it mistakenly does not apply + test_write_lines n y n | git checkout -p $opt >output && + verify_saved_state bar && + verify_state dir/foo head head && + test_grep "Discard" output + ' +done test_expect_success 'git checkout -p HEAD^...' ' # the third n is to get out in case it mistakenly does not apply diff --git a/t/t2020-checkout-detach.sh b/t/t2020-checkout-detach.sh index 8202ef8c74..bce284c297 100755 --- a/t/t2020-checkout-detach.sh +++ b/t/t2020-checkout-detach.sh @@ -45,6 +45,18 @@ test_expect_success 'checkout branch does not detach' ' check_not_detached ' +for opt in "HEAD" "@" +do + test_expect_success "checkout $opt no-op/don't detach" ' + reset && + cat .git/HEAD >expect && + git checkout $opt && + cat .git/HEAD >actual && + check_not_detached && + test_cmp expect actual + ' +done + test_expect_success 'checkout tag detaches' ' reset && git checkout tag && diff --git a/t/t2071-restore-patch.sh b/t/t2071-restore-patch.sh index b5c5c0ff7e..3dc9184b4a 100755 --- a/t/t2071-restore-patch.sh +++ b/t/t2071-restore-patch.sh @@ -44,13 +44,17 @@ test_expect_success PERL 'git restore -p with staged changes' ' verify_state dir/foo index index ' -test_expect_success PERL 'git restore -p --source=HEAD' ' - set_state dir/foo work index && - # the third n is to get out in case it mistakenly does not apply - test_write_lines n y n | git restore -p --source=HEAD && - verify_saved_state bar && - verify_state dir/foo head index -' +for opt in "HEAD" "@" +do + test_expect_success PERL "git restore -p --source=$opt" ' + set_state dir/foo work index && + # the third n is to get out in case it mistakenly does not apply + test_write_lines n y n | git restore -p --source=$opt >output && + verify_saved_state bar && + verify_state dir/foo head index && + test_grep "Discard" output + ' +done test_expect_success PERL 'git restore -p --source=HEAD^' ' set_state dir/foo work index && diff --git a/t/t7105-reset-patch.sh b/t/t7105-reset-patch.sh index 05079c7246..453872c8ba 100755 --- a/t/t7105-reset-patch.sh +++ b/t/t7105-reset-patch.sh @@ -26,12 +26,16 @@ test_expect_success PERL 'saying "n" does nothing' ' verify_saved_state bar ' -test_expect_success PERL 'git reset -p' ' - test_write_lines n y | git reset -p >output && - verify_state dir/foo work head && - verify_saved_state bar && - test_grep "Unstage" output -' +for opt in "HEAD" "@" "" +do + test_expect_success PERL "git reset -p $opt" ' + set_and_save_state dir/foo work work && + test_write_lines n y | git reset -p $opt >output && + verify_state dir/foo work head && + verify_saved_state bar && + test_grep "Unstage" output + ' +done test_expect_success PERL 'git reset -p HEAD^' ' test_write_lines n y | git reset -p HEAD^ >output && From 7abc1869e552b80ea35923ae4315cb8bb0b47b64 Mon Sep 17 00:00:00 2001 From: Ghanshyam Thakkar Date: Tue, 13 Feb 2024 05:35:30 +0530 Subject: [PATCH 2/2] add -p tests: remove PERL prerequisites The Perl version of the add -i/-p commands has been removed since 20b813d (add: remove "add.interactive.useBuiltin" & Perl "git add--interactive", 2023-02-07) Therefore, Perl prerequisite in the test scripts which use the patch mode functionality is not neccessary. Signed-off-by: Ghanshyam Thakkar Signed-off-by: Junio C Hamano --- t/t2024-checkout-dwim.sh | 2 +- t/t2071-restore-patch.sh | 28 ++++++++++++++-------------- t/t3904-stash-patch.sh | 6 ------ t/t7105-reset-patch.sh | 22 +++++++++++----------- t/t7106-reset-unborn-branch.sh | 2 +- t/t7514-commit-patch.sh | 6 ------ 6 files changed, 27 insertions(+), 39 deletions(-) diff --git a/t/t2024-checkout-dwim.sh b/t/t2024-checkout-dwim.sh index a97416ce65..a3b1449ef1 100755 --- a/t/t2024-checkout-dwim.sh +++ b/t/t2024-checkout-dwim.sh @@ -113,7 +113,7 @@ test_expect_success 'checkout of branch from multiple remotes fails with advice' test_grep ! "^hint: " stderr ' -test_expect_success PERL 'checkout -p with multiple remotes does not print advice' ' +test_expect_success 'checkout -p with multiple remotes does not print advice' ' git checkout -B main && test_might_fail git branch -D foo && diff --git a/t/t2071-restore-patch.sh b/t/t2071-restore-patch.sh index 3dc9184b4a..27e85be40a 100755 --- a/t/t2071-restore-patch.sh +++ b/t/t2071-restore-patch.sh @@ -4,7 +4,7 @@ test_description='git restore --patch' . ./lib-patch-mode.sh -test_expect_success PERL 'setup' ' +test_expect_success 'setup' ' mkdir dir && echo parent >dir/foo && echo dummy >bar && @@ -16,28 +16,28 @@ test_expect_success PERL 'setup' ' save_head ' -test_expect_success PERL 'restore -p without pathspec is fine' ' +test_expect_success 'restore -p without pathspec is fine' ' echo q >cmd && git restore -p output && @@ -56,7 +56,7 @@ do ' done -test_expect_success PERL 'git restore -p --source=HEAD^' ' +test_expect_success 'git restore -p --source=HEAD^' ' set_state dir/foo work index && # the third n is to get out in case it mistakenly does not apply test_write_lines n y n | git restore -p --source=HEAD^ && @@ -64,7 +64,7 @@ test_expect_success PERL 'git restore -p --source=HEAD^' ' verify_state dir/foo parent index ' -test_expect_success PERL 'git restore -p --source=HEAD^...' ' +test_expect_success 'git restore -p --source=HEAD^...' ' set_state dir/foo work index && # the third n is to get out in case it mistakenly does not apply test_write_lines n y n | git restore -p --source=HEAD^... && @@ -72,7 +72,7 @@ test_expect_success PERL 'git restore -p --source=HEAD^...' ' verify_state dir/foo parent index ' -test_expect_success PERL 'git restore -p handles deletion' ' +test_expect_success 'git restore -p handles deletion' ' set_state dir/foo work index && rm dir/foo && test_write_lines n y | git restore -p && @@ -85,21 +85,21 @@ test_expect_success PERL 'git restore -p handles deletion' ' # dir/foo. There's always an extra 'n' to reject edits to dir/foo in # the failure case (and thus get out of the loop). -test_expect_success PERL 'path limiting works: dir' ' +test_expect_success 'path limiting works: dir' ' set_state dir/foo work head && test_write_lines y n | git restore -p dir && verify_saved_state bar && verify_state dir/foo head head ' -test_expect_success PERL 'path limiting works: -- dir' ' +test_expect_success 'path limiting works: -- dir' ' set_state dir/foo work head && test_write_lines y n | git restore -p -- dir && verify_saved_state bar && verify_state dir/foo head head ' -test_expect_success PERL 'path limiting works: HEAD^ -- dir' ' +test_expect_success 'path limiting works: HEAD^ -- dir' ' set_state dir/foo work head && # the third n is to get out in case it mistakenly does not apply test_write_lines y n n | git restore -p --source=HEAD^ -- dir && @@ -107,7 +107,7 @@ test_expect_success PERL 'path limiting works: HEAD^ -- dir' ' verify_state dir/foo parent head ' -test_expect_success PERL 'path limiting works: foo inside dir' ' +test_expect_success 'path limiting works: foo inside dir' ' set_state dir/foo work head && # the third n is to get out in case it mistakenly does not apply test_write_lines y n n | (cd dir && git restore -p foo) && @@ -115,7 +115,7 @@ test_expect_success PERL 'path limiting works: foo inside dir' ' verify_state dir/foo head head ' -test_expect_success PERL 'none of this moved HEAD' ' +test_expect_success 'none of this moved HEAD' ' verify_saved_head ' diff --git a/t/t3904-stash-patch.sh b/t/t3904-stash-patch.sh index accfe3845c..368fc2a6cc 100755 --- a/t/t3904-stash-patch.sh +++ b/t/t3904-stash-patch.sh @@ -3,12 +3,6 @@ test_description='stash -p' . ./lib-patch-mode.sh -if ! test_have_prereq PERL -then - skip_all='skipping stash -p tests, perl not available' - test_done -fi - test_expect_success 'setup' ' mkdir dir && echo parent > dir/foo && diff --git a/t/t7105-reset-patch.sh b/t/t7105-reset-patch.sh index 453872c8ba..f4f3b7a677 100755 --- a/t/t7105-reset-patch.sh +++ b/t/t7105-reset-patch.sh @@ -5,7 +5,7 @@ test_description='git reset --patch' TEST_PASSES_SANITIZE_LEAK=true . ./lib-patch-mode.sh -test_expect_success PERL 'setup' ' +test_expect_success 'setup' ' mkdir dir && echo parent > dir/foo && echo dummy > bar && @@ -19,7 +19,7 @@ test_expect_success PERL 'setup' ' # note: bar sorts before foo, so the first 'n' is always to skip 'bar' -test_expect_success PERL 'saying "n" does nothing' ' +test_expect_success 'saying "n" does nothing' ' set_and_save_state dir/foo work work && test_write_lines n n | git reset -p && verify_saved_state dir/foo && @@ -28,7 +28,7 @@ test_expect_success PERL 'saying "n" does nothing' ' for opt in "HEAD" "@" "" do - test_expect_success PERL "git reset -p $opt" ' + test_expect_success "git reset -p $opt" ' set_and_save_state dir/foo work work && test_write_lines n y | git reset -p $opt >output && verify_state dir/foo work head && @@ -37,28 +37,28 @@ do ' done -test_expect_success PERL 'git reset -p HEAD^' ' +test_expect_success 'git reset -p HEAD^' ' test_write_lines n y | git reset -p HEAD^ >output && verify_state dir/foo work parent && verify_saved_state bar && test_grep "Apply" output ' -test_expect_success PERL 'git reset -p HEAD^^{tree}' ' +test_expect_success 'git reset -p HEAD^^{tree}' ' test_write_lines n y | git reset -p HEAD^^{tree} >output && verify_state dir/foo work parent && verify_saved_state bar && test_grep "Apply" output ' -test_expect_success PERL 'git reset -p HEAD^:dir/foo (blob fails)' ' +test_expect_success 'git reset -p HEAD^:dir/foo (blob fails)' ' set_and_save_state dir/foo work work && test_must_fail git reset -p HEAD^:dir/foo && verify_saved_state dir/foo && verify_saved_state bar ' -test_expect_success PERL 'git reset -p aaaaaaaa (unknown fails)' ' +test_expect_success 'git reset -p aaaaaaaa (unknown fails)' ' set_and_save_state dir/foo work work && test_must_fail git reset -p aaaaaaaa && verify_saved_state dir/foo && @@ -70,27 +70,27 @@ test_expect_success PERL 'git reset -p aaaaaaaa (unknown fails)' ' # dir/foo. There's always an extra 'n' to reject edits to dir/foo in # the failure case (and thus get out of the loop). -test_expect_success PERL 'git reset -p dir' ' +test_expect_success 'git reset -p dir' ' set_state dir/foo work work && test_write_lines y n | git reset -p dir && verify_state dir/foo work head && verify_saved_state bar ' -test_expect_success PERL 'git reset -p -- foo (inside dir)' ' +test_expect_success 'git reset -p -- foo (inside dir)' ' set_state dir/foo work work && test_write_lines y n | (cd dir && git reset -p -- foo) && verify_state dir/foo work head && verify_saved_state bar ' -test_expect_success PERL 'git reset -p HEAD^ -- dir' ' +test_expect_success 'git reset -p HEAD^ -- dir' ' test_write_lines y n | git reset -p HEAD^ -- dir && verify_state dir/foo work parent && verify_saved_state bar ' -test_expect_success PERL 'none of this moved HEAD' ' +test_expect_success 'none of this moved HEAD' ' verify_saved_head ' diff --git a/t/t7106-reset-unborn-branch.sh b/t/t7106-reset-unborn-branch.sh index d20e5709f9..88d1c8adf4 100755 --- a/t/t7106-reset-unborn-branch.sh +++ b/t/t7106-reset-unborn-branch.sh @@ -34,7 +34,7 @@ test_expect_success 'reset $file' ' test_cmp expect actual ' -test_expect_success PERL 'reset -p' ' +test_expect_success 'reset -p' ' rm .git/index && git add a && echo y >yes && diff --git a/t/t7514-commit-patch.sh b/t/t7514-commit-patch.sh index 998a2103c7..b4de10a5dd 100755 --- a/t/t7514-commit-patch.sh +++ b/t/t7514-commit-patch.sh @@ -3,12 +3,6 @@ test_description='hunk edit with "commit -p -m"' . ./test-lib.sh -if ! test_have_prereq PERL -then - skip_all="skipping '$test_description' tests, perl not available" - test_done -fi - test_expect_success 'setup (initial)' ' echo line1 >file && git add file &&