Commit Graph

9729 Commits

Author SHA1 Message Date
Jeff King
49ff9a7a02 commit: show interesting ident information in summary
There are a few cases of user identity information that we consider
interesting:

  (1) When the author and committer identities do not match.

  (2) When the committer identity was picked automatically from the
      username, hostname and GECOS information.

In these cases, we already show the information in the commit
message template. However, users do not always see that template
because they might use "-m" or "-F". With this patch, we show these
interesting cases after the commit, along with the subject and
change summary. The new output looks like:

  $ git commit \
      -m "federalist papers" \
      --author='Publius <alexander@hamilton.com>'
  [master 3d226a7] federalist papers
   Author: Publius <alexander@hamilton.com>
   1 files changed, 1 insertions(+), 0 deletions(-)

for case (1), and:

  $ git config --global --unset user.name
  $ git config --global --unset user.email
  $ git commit -m foo
  [master 7c2a927] foo
   Committer: Jeff King <peff@c-71-185-130-222.hsd1.va.comcast.net>
  Your name and email address were configured automatically based
  on your username and hostname. Please check that they are accurate.
  You can suppress this message by setting them explicitly:

      git config --global user.name Your Name
      git config --global user.email you@example.com

  If the identity used for this commit is wrong, you can fix it with:

      git commit --amend --author='Your Name <you@example.com>'

   1 files changed, 1 insertions(+), 0 deletions(-)

for case (2).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-14 09:25:28 -08:00
Jeff King
0a0416a34a strbuf_expand: convert "%%" to "%"
The only way to safely quote arbitrary text in a pretty-print user
format is to replace instances of "%" with "%x25". This is slightly
unreadable, and many users would expect "%%" to produce a single
"%", as that is what printf format specifiers do.

This patch converts "%%" to "%" for all users of strbuf_expand():

 (1) git-daemon interpolated paths

 (2) pretty-print user formats

 (3) merge driver command lines

Case (1) was already doing the conversion itself outside of
strbuf_expand(). Case (2) is the intended beneficiary of this patch.
Case (3) users probably won't notice, but as this is user-facing
behavior, consistently providing the quoting mechanism makes sense.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-14 09:24:42 -08:00
Michael Haggerty
6bdcd0d2fc rebase -i: Retain user-edited commit messages after squash/fixup conflicts
When a squash/fixup fails due to a conflict, the user is required to
edit the commit message.  Previously, if further squash/fixup commands
followed the conflicting squash/fixup, this user-edited message was
discarded and a new automatically-generated commit message was
suggested.

Change the handling of conflicts within squash/fixup command series:
Whenever the user is required to intervene, consider the resulting
commit to be a new basis for the following squash/fixups and use its
commit message in later suggested combined commit messages.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-14 00:27:57 -08:00
Michael Haggerty
6c4c44c458 t3404: Set up more of the test repo in the "setup" step
...and reuse these pre-created branches in tests rather than creating
duplicates.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-14 00:27:57 -08:00
Michael Haggerty
a25eb13909 rebase -i: For fixup commands without squashes, do not start editor
If the "rebase -i" commands include a series of fixup commands without
any squash commands, then commit the combined commit using the commit
message of the corresponding "pick" without starting up the
commit-message editor.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-14 00:27:57 -08:00
Michael Haggerty
5065ed296a rebase -i: Improve consistency of commit count in generated commit messages
Use the numeral "2" instead of the word "two" when two commits are
being interactively squashed.  This makes the treatment consistent
with that for higher numbers of commits.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-14 00:27:56 -08:00
Michael Haggerty
959c0d06ea t3404: Test the commit count in commit messages generated by "rebase -i"
The first line of commit messages generated for "rebase -i"
squash/fixup commits includes a count of the number of commits that
are being combined.  Add machinery to check that this count is
correct, and add such a check to some test cases.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-14 00:27:56 -08:00
Junio C Hamano
1f73566af5 Merge branch 'jc/checkout-merge-base'
* jc/checkout-merge-base:
  rebase -i: teach --onto A...B syntax
  rebase: fix --onto A...B parsing and add tests
  "rebase --onto A...B" replays history on the merge base between A and B
  "checkout A...B" switches to the merge base between A and B
2010-01-13 12:31:13 -08:00
Junio C Hamano
dc96c5ee70 Merge branch 'cc/reset-more'
* cc/reset-more:
  t7111: check that reset options work as described in the tables
  Documentation: reset: add some missing tables
  Fix bit assignment for CE_CONFLICTED
  "reset --merge": fix unmerged case
  reset: use "unpack_trees()" directly instead of "git read-tree"
  reset: add a few tests for "git reset --merge"
  Documentation: reset: add some tables to describe the different options
  reset: improve mixed reset error message when in a bare repo
2010-01-13 11:58:56 -08:00
Junio C Hamano
73d66323ac Merge branch 'nd/sparse'
* nd/sparse: (25 commits)
  t7002: test for not using external grep on skip-worktree paths
  t7002: set test prerequisite "external-grep" if supported
  grep: do not do external grep on skip-worktree entries
  commit: correctly respect skip-worktree bit
  ie_match_stat(): do not ignore skip-worktree bit with CE_MATCH_IGNORE_VALID
  tests: rename duplicate t1009
  sparse checkout: inhibit empty worktree
  Add tests for sparse checkout
  read-tree: add --no-sparse-checkout to disable sparse checkout support
  unpack-trees(): ignore worktree check outside checkout area
  unpack_trees(): apply $GIT_DIR/info/sparse-checkout to the final index
  unpack-trees(): "enable" sparse checkout and load $GIT_DIR/info/sparse-checkout
  unpack-trees.c: generalize verify_* functions
  unpack-trees(): add CE_WT_REMOVE to remove on worktree alone
  Introduce "sparse checkout"
  dir.c: export excluded_1() and add_excludes_from_file_1()
  excluded_1(): support exclude files in index
  unpack-trees(): carry skip-worktree bit over in merged_entry()
  Read .gitignore from index if it is skip-worktree
  Avoid writing to buffer in add_excludes_from_file_1()
  ...

Conflicts:
	.gitignore
	Documentation/config.txt
	Documentation/git-update-index.txt
	Makefile
	entry.c
	t/t7002-grep.sh
2010-01-13 11:58:34 -08:00
Junio C Hamano
f9c01817bb t7502: test commit.status, --status and --no-status
Make sure that the status information:

 - is shown as before without configuration nor command line option;

 - is shown if commit.status is set to true and no command line option
   is given, or --status is explicitly given;

 - is not shown if commit.status is set to false and no command line
   option is given, or --no-status is explicitly given.

Also make sure that the way lines taken from the custom --template appear
in the log message editor is not changed at all.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-13 01:13:56 -08:00
Junio C Hamano
bbc09c22b9 grep: rip out support for external grep
We still allow people to pass --[no-]ext-grep on the command line,
but the option is ignored.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-13 01:04:54 -08:00
Junio C Hamano
054d2fa05c Merge branch 'maint'
* maint:
  remote-curl: Fix Accept header for smart HTTP connections
  grep: -L should show empty files
  rebase--interactive: Ignore comments and blank lines in peek_next_command
2010-01-12 15:48:38 -08:00
Johannes Schindelin
28fb84382b Introduce <branch>@{upstream} notation
A new notation '<branch>@{upstream}' refers to the branch <branch> is set
to build on top of.  Missing <branch> (i.e. '@{upstream}') defaults to the
current branch.

This allows you to run, for example,

	for l in list of local branches
	do
		git log --oneline --left-right $l...$l@{upstream}
	done

to inspect each of the local branches you are interested in for the
divergence from its upstream.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 14:00:58 -08:00
Matthieu Moy
d38a30df7d Be more user-friendly when refusing to do something because of conflict.
Various commands refuse to run in the presence of conflicts (commit,
merge, pull, cherry-pick/revert). They all used to provide rough, and
inconsistant error messages.

A new variable advice.resolveconflict is introduced, and allows more
verbose messages, pointing the user to the appropriate solution.

For commit, the error message used to look like this:

$ git commit
foo.txt: needs merge
foo.txt: unmerged (c34a92682e0394bc0d6f4d4a67a8e2d32395c169)
foo.txt: unmerged (3afcd75de8de0bb5076942fcb17446be50451030)
foo.txt: unmerged (c9785d77b76dfe4fb038bf927ee518f6ae45ede4)
error: Error building trees

The "need merge" line is given by refresh_cache. We add the IN_PORCELAIN
option to make the output more consistant with the other porcelain
commands, and catch the error in return, to stop with a clean error
message. The next lines were displayed by a call to cache_tree_update(),
which is not reached anymore if we noticed the conflict.

The new output looks like:

U       foo.txt
fatal: 'commit' is not possible because you have unmerged files.
Please, fix them up in the work tree, and then use 'git add/rm <file>' as
appropriate to mark resolution and make a commit, or use 'git commit -a'.

Pull is slightly modified to abort immediately if $GIT_DIR/MERGE_HEAD
exists instead of waiting for merge to complain.

The behavior of merge and the test-case are slightly modified to reflect
the usual flow: start with conflicts, fix them, and afterwards get rid of
MERGE_HEAD, with different error messages at each stage.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 13:17:08 -08:00
Shawn O. Pearce
8efa5f629e remote-curl: Fix Accept header for smart HTTP connections
We actually expect to see an application/x-git-upload-pack-result
but we lied and said we Accept *-response.  This was a typo on my
part when I was writing the code.

Fortunately the wrong Accept header had no real impact, as the
deployed git-http-backend servers were not testing the Accept
header before they returned their content.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 13:09:44 -08:00
Michael Haggerty
234b3dae2f rebase-i: Ignore comments and blank lines in peek_next_command
Previously, blank lines and/or comments within a series of
squash/fixup commands would confuse "git rebase -i" into thinking that
the series was finished.  It would therefore require the user to edit
the commit message for the squash/fixup commits seen so far.  Then,
after continuing, it would ask the user to edit the commit message
again.

Ignore comments and blank lines within a group of squash/fixup
commands, allowing them to be processed in one go.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 12:34:50 -08:00
Michael Haggerty
05c95dbe44 lib-rebase: Allow comments and blank lines to be added to the rebase script
(For testing "rebase -i"): Support new action types in $FAKE_LINES to
allow comments and blank lines to be added to the "rebase -i" command
list.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 12:34:07 -08:00
Michael Haggerty
f64b485624 lib-rebase: Provide clearer debugging info about what the editor did
(For testing "rebase -i"): Output the "rebase -i" command script
before and after the edits, to make it clearer what the editor did.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 12:33:30 -08:00
Peter Collingbourne
c5e558a80a Remove empty directories when checking out a commit with fewer submodules
Change the unlink_entry function to use rmdir to remove submodule
directories.  Currently we try to use unlink, which will never succeed.

Of course rmdir will only succeed for empty (i.e. not checked out)
submodule directories.  Behaviour if a submodule is checked out stays
essentially the same: print a warning message and keep the submodule
directory.

Signed-off-by: Peter Collingbourne <peter@pcc.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-11 19:50:51 -08:00
Junio C Hamano
dea4562bf5 rerere forget path: forget recorded resolution
After you find out an earlier resolution you told rerere to use was a
mismerge, there is no easy way to clear it.  A new subcommand "forget" can
be used to tell git to forget a recorded resolution, so that you can redo
the merge from scratch.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-10 18:10:36 -08:00
Johannes Sixt
2b541bf8be start_command: detect execvp failures early
Previously, failures during execvp could be detected only by
finish_command. However, in some situations it is beneficial for the
parent process to know earlier that the child process will not run.

The idea to use a pipe to signal failures to the parent process and
the test case were lifted from patches by Ilari Liusvaara.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-10 10:15:03 -08:00
Junio C Hamano
0b4ae29f03 Merge branch 'jk/maint-1.6.5-reset-hard'
* jk/maint-1.6.5-reset-hard:
  reset: unbreak hard resets with GIT_WORK_TREE
2010-01-10 08:52:53 -08:00
Junio C Hamano
84d52cabe7 Merge branch 'jk/push-to-delete'
* jk/push-to-delete:
  builtin-push: add --delete as syntactic sugar for :foo
2010-01-10 08:52:45 -08:00
Junio C Hamano
9c787f3f88 Merge branch 'mm/config-path'
* mm/config-path:
  builtin-config: add --path option doing ~ and ~user expansion.
2010-01-10 08:52:41 -08:00
Junio C Hamano
7f695d262a Merge branch 'bg/maint-remote-update-default'
* bg/maint-remote-update-default:
  Fix "git remote update" with remotes.defalt set
2010-01-10 08:52:24 -08:00
Junio C Hamano
2b35fccf73 Merge branch 'mm/diag-path-in-treeish'
* mm/diag-path-in-treeish:
  Detailed diagnosis when parsing an object name fails.
2010-01-10 08:52:10 -08:00
Junio C Hamano
c5034673fd Merge branch 'maint-1.6.1' into maint-1.6.2
* maint-1.6.1:
  base85: Make the code more obvious instead of explaining the non-obvious
  base85: encode_85() does not use the decode table
  base85 debug code: Fix length byte calculation
  checkout -m: do not try to fall back to --merge from an unborn branch
  branch: die explicitly why when calling "git branch [-a|-r] branchname".
  textconv: stop leaking file descriptors
  commit: --cleanup is a message option
  git count-objects: handle packs bigger than 4G
  t7102: make the test fail if one of its check fails

Conflicts:
	diff.c
2010-01-10 00:49:47 -08:00
Junio C Hamano
96aa7adda3 Merge branch 'maint-1.6.0' into maint-1.6.1
* maint-1.6.0:
  base85: Make the code more obvious instead of explaining the non-obvious
  base85: encode_85() does not use the decode table
  base85 debug code: Fix length byte calculation
  checkout -m: do not try to fall back to --merge from an unborn branch
  branch: die explicitly why when calling "git branch [-a|-r] branchname".
2010-01-10 00:48:47 -08:00
Brad King
40c813e00c Handle relative paths in submodule .git files
Commit 842abf0 (Teach resolve_gitlink_ref() about the .git file, 2008-02-20)
taught resolve_gitlink_ref() to call read_gitfile_gently() to resolve .git
files.  In this commit teach read_gitfile_gently() to interpret a relative
path in a .git file with respect to the file location.

This change allows update-index to recognize a submodule that uses a relative
path in its .git file.  It previously failed because the relative path was
wrongly interpreted with respect to the superproject directory.

Signed-off-by: Brad King <brad.king@kitware.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:43:22 -08:00
Brad King
48cc95ed4a Test update-index for a gitlink to a .git file
Check that update-index recognizes a submodule that uses a .git file.
Currently it works when the .git file specifies an absolute path, but
not when it specifies a relative path.

Signed-off-by: Brad King <brad.king@kitware.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:43:22 -08:00
Christian Couder
d7eed8cbef t7111: check that reset options work as described in the tables
Some previous patches added some tables to the "git reset"
documentation. These tables describe the behavior of "git reset"
depending on the option it is passed and the state of the files
in the working tree, the index, HEAD and the target commit.

This patch adds some tests to make sure that the tables describe
the behavior of "git reset".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:38:43 -08:00
Tay Ray Chuan
08d63a422b transport-helper.c::push_refs(): ignore helper-reported status if ref is not to be pushed
If the status of a ref is REF_STATUS_NONE, the remote helper will not
be told to push the ref (via a 'push' command).

However, the remote helper may still act on these refs.

If the helper does act on the ref, and prints a status for it, ignore
the report (ie. don't overwrite the status of the ref with it, nor the
message in the remote_status member) if the reported status is 'no
match'.

This allows the user to be alerted to more "interesting" ref statuses,
like REF_STATUS_NONFASTFORWARD.

Cc: Jeff King <peff@peff.net>
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:34:10 -08:00
Tay Ray Chuan
4232826771 transport.c::transport_push(): make ref status affect return value
Use push_had_errors() to check the refs for errors and modify the
return value.

Mark the non-fast-forward push tests to succeed.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:34:10 -08:00
Tay Ray Chuan
20e8b465a5 refactor ref status logic for pushing
Move the logic that detects up-to-date and non-fast-forward refs to a
new function in remote.[ch], set_ref_status_for_push().

Make transport_push() invoke set_ref_status_for_push() before invoking
the push_refs() implementation. (As a side-effect, the push_refs()
implementation in transport-helper.c now knows of non-fast-forward
pushes.)

Removed logic for detecting up-to-date refs from the push_refs()
implementation in transport-helper.c, as transport_push() has already
done so for it.

Make cmd_send_pack() invoke set_ref_status_for_push() before invoking
send_pack(), as transport_push() can't do it for send_pack() here.

Mark the test on the return status of non-fast-forward push to fail.
Git now exits with success, as transport.c::transport_push() does not
check for refs with status REF_STATUS_REJECT_NONFASTFORWARD nor does it
indicate rejected pushes with its return value.

Mark the test for ref status to succeed. As mentioned earlier, refs
might be marked as non-fast-forwards, triggering the push status
printing mechanism in transport.c.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:34:10 -08:00
Tay Ray Chuan
7b69079be9 t5541-http-push.sh: add test for unmatched, non-fast-forwarded refs
Some refs can only be matched to a remote ref with an explicit refspec.
When such a ref is a non-fast-forward of its remote ref,  test that
pushing them (with the explicit refspec specified) fails with a non-
fast-foward-type error (viz. printing of ref status and help message).

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:34:10 -08:00
Tay Ray Chuan
1945237486 t5541-http-push.sh: add tests for non-fast-forward pushes
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 23:34:10 -08:00
David Aguilar
1c6f5b52b7 difftool: Allow specifying unconfigured commands with --extcmd
git-difftool requires difftool.<tool>.cmd configuration even when
tools use the standard "$diffcmd $from $to" form.  This teaches
git-difftool to run these tools in lieu of configuration by
allowing the command to be specified on the command line.

Reference: http://article.gmane.org/gmane.comp.version-control.git/133377
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 22:41:30 -08:00
David Aguilar
61ed71dcff difftool--helper: Remove use of the GIT_MERGE_TOOL variable
An undocumented mis-feature in git-difftool is that it allows you
to specify a default difftool by setting GIT_MERGE_TOOL.
This behavior was never documented and was included as an
oversight back when git-difftool was maintained outside of git.

git-mergetool never honored GIT_MERGE_TOOL so neither should
git-difftool.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-09 22:41:29 -08:00
Junio C Hamano
48ffef966c ls-files: fix overeager pathspec optimization
Given pathspecs that share a common prefix, ls-files optimized its call
into recursive directory reader by starting at the common prefix
directory.

If you have a directory "t" with an untracked file "t/junk" in it, but the
top-level .gitignore file told us to ignore "t/", this resulted in:

    $ git ls-files -o --exclude-standard
    $ git ls-files -o --exclude-standard t/
    t/junk
    $ git ls-files -o --exclude-standard t/junk
    t/junk
    $ cd t && git ls-files -o --exclude-standard
    junk

We could argue that you are overriding the ignore file by giving a
patchspec that matches or being in that directory, but it is somewhat
unexpected.  Worse yet, these behave differently:

    $ git ls-files -o --exclude-standard t/ .
    $ git ls-files -o --exclude-standard t/
    t/junk

This patch changes the optimization so that it notices when the common
prefix directory that it starts reading from is an ignored one.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-08 23:14:50 -08:00
Junio C Hamano
472e746991 t3001: test ls-files -o ignored/dir
When you have "t" directory that is marked as ignored in the top-level
.gitignore file (or $GIT_DIR/info/exclude), running

    $ git ls-files -o --exclude-standard

from the top-level correctly excludes files in "t" directory, but
any of the following:

    $ git ls-files -o --exclude-standard t/
    $ cd t && git ls-files -o --exclude-standard

would show untracked files in that directory.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-08 23:11:40 -08:00
Junio C Hamano
3259ada4c7 Merge branch 'sb/maint-octopus'
* sb/maint-octopus:
  octopus: remove dead code
  octopus: reenable fast-forward merges
  octopus: make merge process simpler to follow

Conflicts:
	git-merge-octopus.sh
2010-01-07 15:40:21 -08:00
Junio C Hamano
762c710b36 Merge branch 'mv/commit-date'
* mv/commit-date:
  Document date formats accepted by parse_date()
  builtin-commit: add --date option
2010-01-07 15:35:55 -08:00
Junio C Hamano
79f6ce5717 Merge branch 'mo/bin-wrappers'
* mo/bin-wrappers:
  INSTALL: document a simpler way to run uninstalled builds
  run test suite without dashed git-commands in PATH
  build dashless "bin-wrappers" directory similar to installed bindir
2010-01-07 15:35:52 -08:00
Junio C Hamano
730f72840c unpack-trees.c: look ahead in the index
This makes the traversal of index be in sync with the tree traversal.
When unpack_callback() is fed a set of tree entries from trees, it
inspects the name of the entry and checks if the an index entry with
the same name could be hiding behind the current index entry, and

 (1) if the name appears in the index as a leaf node, it is also
     fed to the n_way_merge() callback function;

 (2) if the name is a directory in the index, i.e. there are entries in
     that are underneath it, then nothing is fed to the n_way_merge()
     callback function;

 (3) otherwise, if the name comes before the first eligible entry in the
     index, the index entry is first unpacked alone.

When traverse_trees_recursive() descends into a subdirectory, the
cache_bottom pointer is moved to walk index entries within that directory.

All of these are omitted for diff-index, which does not even want to be
fed an index entry and a tree entry with D/F conflicts.

This fixes 3-way read-tree and exposes a bug in other parts of the system
in t6035, test #5.  The test prepares these three trees:

 O = HEAD^
    100644 blob e69de29bb2    a/b-2/c/d
    100644 blob e69de29bb2    a/b/c/d
    100644 blob e69de29bb2    a/x

 A = HEAD
    100644 blob e69de29bb2    a/b-2/c/d
    100644 blob e69de29bb2    a/b/c/d
    100644 blob 587be6b4c3f93f93c489c0111bba5596147a26cb    a/x

 B = master
    120000 blob a36b77384451ea1de7bd340ffca868249626bc52    a/b
    100644 blob e69de29bb2    a/b-2/c/d
    100644 blob e69de29bb2    a/x

With a clean index that matches HEAD, running

    git read-tree -m -u --aggressive $O $A $B

now yields

    120000 a36b77384451ea1de7bd340ffca868249626bc52 3       a/b
    100644 e69de29bb2 0       a/b-2/c/d
    100644 e69de29bb2 1       a/b/c/d
    100644 e69de29bb2 2       a/b/c/d
    100644 587be6b4c3f93f93c489c0111bba5596147a26cb 0       a/x

which is correct.  "master" created "a/b" symlink that did not exist,
and removed "a/b/c/d" while HEAD did not do touch either path.

Before this series, read-tree did not notice the situation and resolved
addition of "a/b" and removal of "a/b/c/d" independently.  If A = HEAD had
another path "a/b/c/e" added, this merge should conflict but instead it
silently resolved "a/b" and then immediately overwrote it to add
"a/b/c/e", which was quite bogus.

Tests in t1012 start to work with this.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-07 15:00:14 -08:00
Nanako Shiraishi
230a456638 rebase -i: teach --onto A...B syntax
When rewriting commits on a topic branch, sometimes it is easier to
compare the version of commits before and after the rewrite if they are
based on the same commit that forked from the upstream. An earlier commit
by Junio (fixed up by the previous commit) gives "--onto A...B" syntax to
rebase command, and rebases on top of the merge base between A and B;
teach the same to the interactive version, too.

Signed-off-by: しらいし ななこ <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-07 11:15:20 -08:00
Nanako Shiraishi
9f21e97ddc rebase: fix --onto A...B parsing and add tests
The previous patch didn't parse "rebase --onto A...B" correctly when A
isn't an empty string. It also tried to be careful to notice a case in
which there are more than one merge bases, but forgot to give --all option
to merge-base, making the test pointless.

Fix these problems and add a test script to verify. Improvements to the
script to parse A...B syntax was taken from review comments by Johannes
Schindelin.

Signed-off-by: しらいし ななこ <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-07 11:14:39 -08:00
Nguyễn Thái Ngọc Duy
8740773ee5 t7002: test for not using external grep on skip-worktree paths
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-06 18:29:23 -08:00
Nguyễn Thái Ngọc Duy
cd83ac4156 t7002: set test prerequisite "external-grep" if supported
Add another test to set prerequisite EXTGREP if the current build supports
external grep. This can be used to skip external grep only tests on builds
that do not support this optimization.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-06 18:28:11 -08:00
Nanako Shiraishi
f59baa502f rebase -i --autosquash: auto-squash commits
Teach a new option, --autosquash, to the interactive rebase.
When the commit log message begins with "!fixup ...", and there
is a commit whose title begins with the same ..., automatically
modify the todo list of rebase -i so that the commit marked for
squashing come right after the commit to be modified, and change
the action of the moved commit from pick to squash.

Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-06 17:18:56 -08:00