Commit Graph

282 Commits

Author SHA1 Message Date
Junio C Hamano
c672f01c04 Merge branch 'jc/want-commit'
* jc/want-commit:
  Allow git merge ":/<pattern>"
2011-10-05 12:35:55 -07:00
Nguyễn Thái Ngọc Duy
baf18fc261 Accept tags in HEAD or MERGE_HEAD
HEAD and MERGE_HEAD (among other branch tips) should never hold a
tag. That can only be caused by broken tools and is cumbersome to fix
by an end user with:

  $ git update-ref HEAD $(git rev-parse HEAD^{commit})

which may look like a magic to a new person.

Be easy, warn users (so broken tools can be fixed if they bother to
report) and move on.

Be robust, if the given SHA-1 cannot be resolved to a commit object,
die (therefore return value is always valid).

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-18 14:11:40 -07:00
Nguyễn Thái Ngọc Duy
894642f68d merge: remove global variable head[]
Also kill head_invalid in favor of "head_commit == NULL".

Local variable "head" in cmd_merge() is renamed to "head_sha1" to make
sure I don't miss any access because this variable should not be used
after head_commit is set (use head_commit->object.sha1 instead).

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-18 13:56:58 -07:00
Nguyễn Thái Ngọc Duy
10b98fa5b3 merge: use return value of resolve_ref() to determine if HEAD is invalid
resolve_ref() only updates "head" when it returns non NULL value (it
may update "head" even when returning NULL, but not in all cases).

Because "head" is not initialized before the call, is_null_sha1() is
not enough. Check also resolve_ref() return value.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-18 13:55:56 -07:00
Junio C Hamano
6099835c19 Allow git merge ":/<pattern>"
It probably is not such a good idea to use ":/<pattern>" to specify which
commit to merge, as ":/<pattern>" can often hit unexpected commits, but
somebody tried it and got a nonsense error message:

	fatal: ':/Foo bar' does not point to a commit

So here is a for-the-sake-of-consistency update that is fairly useless
that allows users to carefully try not shooting in the foot.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-15 16:52:43 -07:00
Junio C Hamano
f946b465d7 Merge branch 'jk/color-and-pager'
* jk/color-and-pager:
  want_color: automatically fallback to color.ui
  diff: don't load color config in plumbing
  config: refactor get_colorbool function
  color: delay auto-color decision until point of use
  git_config_colorbool: refactor stdout_is_tty handling
  diff: refactor COLOR_DIFF from a flag into an int
  setup_pager: set GIT_PAGER_IN_USE
  t7006: use test_config helpers
  test-lib: add helper functions for config
  t7006: modernize calls to unset

Conflicts:
	builtin/commit.c
	parse-options.c
2011-08-28 21:19:16 -07:00
Nguyễn Thái Ngọc Duy
b4fd94064d merge: keep stash[] a local variable
A stash is created by save_state() and used by restore_state(). Pass
SHA-1 explicitly for clarity and keep stash[] to cmd_merge().

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-26 13:35:31 -07:00
Junio C Hamano
284daf2902 Merge branch 'jc/merge-reword'
* jc/merge-reword:
  merge: reword the final message
2011-08-25 16:00:53 -07:00
Jeff King
c9bfb95348 want_color: automatically fallback to color.ui
All of the "do we want color" flags default to -1 to
indicate that we don't have any color configured. This value
is handled in one of two ways:

  1. In porcelain, we check early on whether the value is
     still -1 after reading the config, and set it to the
     value of color.ui (which defaults to 0).

  2. In plumbing, it stays untouched as -1, and want_color
     defaults it to off.

This works fine, but means that every porcelain has to check
and reassign its color flag. Now that want_color gives us a
place to put this check in a single spot, we can do that,
simplifying the calling code.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-19 15:51:38 -07:00
Jeff King
f1c9626105 diff: refactor COLOR_DIFF from a flag into an int
This lets us store more than just a bit flag for whether we
want color; we can also store whether we want automatic
colors. This can be useful for making the automatic-color
decision closer to the point of use.

This mostly just involves replacing DIFF_OPT_* calls with
manipulations of the flag. The biggest exception is that
calls to DIFF_OPT_TST must check for "o->use_color > 0",
which lets an "unknown" value (i.e., the default) stay at
"no color". In the previous code, a value of "-1" was not
propagated at all.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-18 14:35:53 -07:00
Junio C Hamano
f67d2e82d6 Merge branch 'jk/format-patch-am'
* jk/format-patch-am:
  format-patch: preserve subject newlines with -k
  clean up calling conventions for pretty.c functions
  pretty: add pp_commit_easy function for simple callers
  mailinfo: always clean up rfc822 header folding
  t: test subject handling in format-patch / am pipeline

Conflicts:
	builtin/branch.c
	builtin/log.c
	commit.h
2011-05-31 12:19:11 -07:00
Jeff King
6bf139440c clean up calling conventions for pretty.c functions
We have a pretty_print_context representing the parameters
for a pretty-print session, but we did not use it uniformly.
As a result, functions kept growing more and more arguments.

Let's clean this up in a few ways:

  1. All pretty-print pp_* functions now take a context.
     This lets us reduce the number of arguments to these
     functions, since we were just passing around the
     context values separately.

  2. The context argument now has a cmit_fmt field, which
     was passed around separately. That's one less argument
     per function.

  3. The context argument always comes first, which makes
     calling a little more uniform.

This drops lines from some callers, and adds lines in a few
places (because we need an extra line to set the context's
fmt field). Overall, we don't save many lines, but the lines
that are there are a lot simpler and more readable.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-26 15:56:47 -07:00
Junio C Hamano
f23101bf9f merge: reword the final message
Ever since the merge command was made multi-strategy aware, we said

    Merge made by octopus.

at the end of a session.  Reword it to

    Merge made by the 'octopus' strategy.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-25 13:34:17 -07:00
Junio C Hamano
6699c959ef Merge branch 'jk/cherry-pick-root-with-resolve'
* jk/cherry-pick-root-with-resolve:
  t3503: test cherry picking and reverting root commits
  revert: allow reverting a root commit
  cherry-pick: handle root commits with external strategies
2011-05-19 20:37:19 -07:00
Junio C Hamano
36a45b4fa4 Merge branch 'mg/merge-ff-config'
* mg/merge-ff-config:
  tests: check git does not barf on merge.ff values for future versions of git
  merge: introduce merge.ff configuration variable

Conflicts:
	t/t7600-merge.sh
2011-05-16 16:46:23 -07:00
Jeff King
161807349a cherry-pick: handle root commits with external strategies
The merge-recursive strategy already handles root commits;
it cherry-picks the difference between the empty tree and
the root commit's tree.

However, for external strategies, we dereference NULL and
segfault while building the argument list. Instead, let's
handle this by passing the empty tree sha1 to the merge
script.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-16 13:00:30 -07:00
Junio C Hamano
c7fe5b61e1 Merge branch 'jc/maint-branch-mergeoptions'
* jc/maint-branch-mergeoptions:
  merge: make branch.<name>.mergeoptions correctly override merge.<option>

Conflicts:
	builtin/merge.c
2011-05-11 11:38:36 -07:00
Junio C Hamano
f23e8decd5 merge: introduce merge.ff configuration variable
This variable gives the default setting for --ff, --no-ff or --ff-only
options of "git merge" command.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-06 15:12:30 -07:00
Junio C Hamano
541d1fa85c Merge branch 'jc/maint-branch-mergeoptions' into mg/merge-ff-config
* jc/maint-branch-mergeoptions:
  merge: make branch.<name>.mergeoptions correctly override merge.<option>
2011-05-06 15:10:36 -07:00
Junio C Hamano
a75c3523d3 Merge branch 'ab/i18n-fixup'
* ab/i18n-fixup: (24 commits)
  i18n: use test_i18n{cmp,grep} in t7600, t7607, t7611 and t7811
  i18n: use test_i18n{grep,cmp} in t7508
  i18n: use test_i18ngrep in t7506
  i18n: use test_i18ngrep and test_i18ncmp in t7502
  i18n: use test_i18ngrep in t7501
  i18n: use test_i18ncmp in t7500
  i18n: use test_i18ngrep in t7201
  i18n: use test_i18ncmp and test_i18ngrep in t7102 and t7110
  i18n: use test_i18ncmp and test_i18ngrep in t5541, t6040, t6120, t7004, t7012 and t7060
  i18n: use test_i18ncmp and test_i18ngrep in t3700, t4001 and t4014
  i18n: use test_i18ncmp and test_i18ngrep in t3203, t3501 and t3507
  i18n: use test_i18ngrep in t2020, t2204, t3030, and t3200
  i18n: use test_i18ngrep in lib-httpd and t2019
  i18n: do not overuse C_LOCALE_OUTPUT (grep)
  i18n: use test_i18ncmp in t1200 and t2200
  i18n: .git file is not a human readable message (t5601)
  i18n: do not overuse C_LOCALE_OUTPUT
  i18n: mark init-db messages for translation
  i18n: mark checkout plural warning for translation
  i18n: mark checkout --detach messages for translation
  ...
2011-05-02 15:58:40 -07:00
Ævar Arnfjörð Bjarmason
f68f180172 i18n: mark merge CHERRY_PICK_HEAD messages for translation
Mark CHERRY_PICK_HEAD related messages in builtin/merge.c that were
added in v1.7.5-rc0~88^2~2 (Introduce CHERRY_PICK_HEAD) by Jay Soffian
for translation.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-04-12 00:12:53 -07:00
Ævar Arnfjörð Bjarmason
c7f426d4bc i18n: mark merge "upstream" messages for translation
Mark the merge messages that were added in v1.7.5-rc1~17^2 (merge:
merge with the default upstream branch without argument) by Junio C
Hamano for translation.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-04-12 00:12:53 -07:00
Ævar Arnfjörð Bjarmason
650ed9db74 i18n: mark merge "Could not read from" message for translation
Mark the "Could not read from '%s'" message that was added to
builtin/merge.c in v1.7.4.2~25^2 (merge: honor prepare-commit-msg
hook) by Jay Soffian for translation.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-04-12 00:12:53 -07:00
Junio C Hamano
4e8115fff1 merge: allow "-" as a short-hand for "previous branch"
Just like "git checkout -" is a short-hand for "git checkout @{-1}" to
conveniently switch back to the previous branch, "git merge -" is a
short-hand for "git merge @{-1}" to conveniently merge the previous branch.

It will allow me to say:

    $ git checkout -b au/topic
    $ git am -s ./+au-topic.mbox
    $ git checkout pu
    $ git merge -

which is an extremely typical and repetitive operation during my git day.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-04-07 15:57:57 -07:00
Junio C Hamano
ffc5e3c958 Merge branch 'jc/merge-sans-branch'
* jc/merge-sans-branch:
  merge: merge with the default upstream branch without argument
  merge: match the help text with the documentation

Conflicts:
	builtin/merge.c
2011-04-01 17:57:16 -07:00
Junio C Hamano
6c80cd298a Merge branch 'ab/i18n-st'
* ab/i18n-st: (69 commits)
  i18n: git-shortlog basic messages
  i18n: git-revert split up "could not revert/apply" message
  i18n: git-revert literal "me" messages
  i18n: git-revert "Your local changes" message
  i18n: git-revert basic messages
  i18n: git-notes GIT_NOTES_REWRITE_MODE error message
  i18n: git-notes basic commands
  i18n: git-gc "Auto packing the repository" message
  i18n: git-gc basic messages
  i18n: git-describe basic messages
  i18n: git-clean clean.requireForce messages
  i18n: git-clean basic messages
  i18n: git-bundle basic messages
  i18n: git-archive basic messages
  i18n: git-status "renamed: " message
  i18n: git-status "Initial commit" message
  i18n: git-status "Changes to be committed" message
  i18n: git-status shortstatus messages
  i18n: git-status "nothing to commit" messages
  i18n: git-status basic messages
  ...

Conflicts:
	builtin/branch.c
	builtin/checkout.c
	builtin/clone.c
	builtin/commit.c
	builtin/grep.c
	builtin/merge.c
	builtin/push.c
	builtin/revert.c
	t/t3507-cherry-pick-conflict.sh
	t/t7607-merge-overwrite.sh
2011-04-01 17:55:55 -07:00
Jeff King
97b1b4f3a6 merge: merge unborn index before setting ref
When we merge into an unborn branch, there are basically two
steps:

  1. Write the sha1 of the new commit into the ref pointed
     to by HEAD.

  2. Update the index with the new content, and check it out
     to the working tree.

We currently do them in this order. However, (2) is the step
that is much more likely to fail, since it can be blocked by
things like untracked working tree files. When it does, the
merge fails and we are left with an empty index but an
updated HEAD.

This patch switches the order, so that a failure in updating
the index leaves us unchanged. Of course, a failure in
updating the ref now leaves us with an updated index and
mis-matched HEAD. That is arguably not much better, but it
is probably less likely to actually happen.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-25 14:16:01 -07:00
Junio C Hamano
93e535a5b7 merge: merge with the default upstream branch without argument
"git merge" without specifying any commit is a no-op by default.

A new option merge.defaultupstream can be set to true to cause such an
invocation of the command to merge the upstream branches configured for
the current branch by using their last observed values stored in their
remote tracking branches.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-24 00:37:25 -07:00
Jared Hance
c395c25b86 merge: match the help text with the documentation
We used to be very casual in terminology and used <branch>, <ref> and
<rev> more or less interchangeably with <commit>.  Match the help text
given by "git merge -h" with that of the documentation.

Signed-off-by: Jared Hance <jaredhance@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-24 00:09:51 -07:00
Junio C Hamano
0ce6a51b43 Merge branch 'jk/merge-rename-ux'
* jk/merge-rename-ux:
  pull: propagate --progress to merge
  merge: enable progress reporting for rename detection
  add inexact rename detection progress infrastructure
  commit: stop setting rename limit
  bump rename limit defaults (again)
  merge: improve inexact rename limit warning
2011-03-19 23:23:56 -07:00
Ævar Arnfjörð Bjarmason
157efde10f i18n: git-merge "Wonderful" message
Gettextize the "Wonderful" message. A test in t7600-merge.sh
explicitly checked for this message. Change it to skip under
GETTEXT_POISON=YesPlease.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-09 23:52:55 -08:00
Ævar Arnfjörð Bjarmason
2ceb61e0a0 i18n: git-merge "Updating %s..%s" message
Gettextize the "Updating %s..%s\n" message. A test in
t1200-tutorial.sh explicitly checked for this message. Split it into
two tests to skip the test_cmp test under GETTEXT_POISON=YesPlease.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-09 23:52:55 -08:00
Ævar Arnfjörð Bjarmason
bacec47845 i18n: git-merge basic messages
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-09 23:52:55 -08:00
Junio C Hamano
66ecd2d053 Merge branch 'js/cherry-pick-usability'
* js/cherry-pick-usability:
  Teach commit about CHERRY_PICK_HEAD
  bash: teach __git_ps1 about CHERRY_PICK_HEAD
  Introduce CHERRY_PICK_HEAD
  t3507: introduce pristine-detach helper
2011-03-09 15:56:17 -08:00
Junio C Hamano
ecd75ddb6f Merge branch 'mg/placeholders-are-lowercase'
* mg/placeholders-are-lowercase:
  Make <identifier> lowercase in Documentation
  Make <identifier> lowercase as per CodingGuidelines
  Make <identifier> lowercase as per CodingGuidelines
  Make <identifier> lowercase as per CodingGuidelines
  CodingGuidelines: downcase placeholders in usage messages
2011-02-27 21:58:30 -08:00
Junio C Hamano
11e4b4fa49 Merge branch 'js/maint-merge-use-prepare-commit-msg-hook'
* js/maint-merge-use-prepare-commit-msg-hook:
  merge: honor prepare-commit-msg hook
2011-02-27 21:58:30 -08:00
Jay Soffian
d7e5c0cbfb Introduce CHERRY_PICK_HEAD
When a cherry-pick conflicts git advises:

 $ git commit -c <original commit id>

to preserve the original commit message and authorship. Instead, let's
record the original commit id in CHERRY_PICK_HEAD and advise:

  $ git commit -c CHERRY_PICK_HEAD

A later patch teaches git to handle the '-c CHERRY_PICK_HEAD' part.
Note that we record CHERRY_PICK_HEAD even in the case where there
are no conflicts so that we may use it to communicate authorship to
commit; this will then allow us to remove set_author_ident_env from
revert.c. However, we do not record CHERRY_PICK_HEAD when --no-commit
is used, as presumably the user intends to further edit the commit
and possibly even cherry-pick additional commits on top.

Tests and documentation contributed by Jonathan Nieder.

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-21 22:58:02 -08:00
Jeff King
99bfc6691d merge: enable progress reporting for rename detection
The user can enable or disable it explicitly with the new
--progress, but it defaults to checking isatty(2).

This works only with merge-recursive and subtree. In theory
we could pass a progress flag to other strategies, but none
of them support progress at this point, so let's wait until
they grow such a feature before worrying about propagating
it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-21 10:24:08 -08:00
Jay Soffian
65969d43d1 merge: honor prepare-commit-msg hook
When a merge is stopped due to conflicts or --no-commit, the
subsequent commit calls the prepare-commit-msg hook. However,
it is not called after a clean merge. Fix this inconsistency
by invoking the hook after clean merges as well.

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-15 13:35:35 -08:00
Michael J Gruber
23c6a803d3 Make <identifier> lowercase as per CodingGuidelines
*.c part for matches with '"[A-Z]+"'.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-15 11:53:10 -08:00
Junio C Hamano
43f9f05301 Merge branch 'maint'
* maint:
  pull: do not display fetch usage on --help-all
  git-tag.txt: list all modes in the description
  commit,status: describe -u likewise
  add: describe --patch like checkout, reset
  commit,merge,tag: describe -m likewise
  clone,init: describe --template using the same wording
  commit,status: describe --porcelain just like push
  commit,tag: use same wording for -F
  configure: use AC_LANG_PROGRAM consistently
  string_list_append: always set util pointer to NULL
  correct type of EMPTY_TREE_SHA1_BIN
2011-02-15 11:03:22 -08:00
Michael J Gruber
3f40617566 commit,merge,tag: describe -m likewise
This also removes the superfluous "specify" and rewords the misleading
"if any" which sounds as if omitting "-m" would omit the merge commit
message. (It means "if a merge commit is created at all".)

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-15 10:51:08 -08:00
Jonathan Nieder
67ac1e1d57 cherry-pick/revert: add support for -X/--strategy-option
For example, this would allow cherry-picking or reverting patches from
a piece of history with a different end-of-line style, like so:

	$ git revert -Xrenormalize old-problematic-commit

Currently that is possible with manual use of merge-recursive but the
cherry-pick/revert porcelain does not expose the functionality.

While at it, document the existing support for --strategy.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-28 11:27:56 -08:00
Junio C Hamano
6758af89e4 Merge branch 'jn/git-cmd-h-bypass-setup'
* jn/git-cmd-h-bypass-setup:
  update-index -h: show usage even with corrupt index
  merge -h: show usage even with corrupt index
  ls-files -h: show usage even with corrupt index
  gc -h: show usage even with broken configuration
  commit/status -h: show usage even with broken configuration
  checkout-index -h: show usage even in an invalid repository
  branch -h: show usage even in an invalid repository

Conflicts:
	builtin/merge.c
2010-12-12 21:49:50 -08:00
Junio C Hamano
657072f3ac Merge branch 'jh/notes-merge'
* jh/notes-merge: (23 commits)
  Provide 'git merge --abort' as a synonym to 'git reset --merge'
  cmd_merge(): Parse options before checking MERGE_HEAD
  Provide 'git notes get-ref' to easily retrieve current notes ref
  git notes merge: Add testcases for merging notes trees at different fanouts
  git notes merge: Add another auto-resolving strategy: "cat_sort_uniq"
  git notes merge: --commit should fail if underlying notes ref has moved
  git notes merge: List conflicting notes in notes merge commit message
  git notes merge: Manual conflict resolution, part 2/2
  git notes merge: Manual conflict resolution, part 1/2
  Documentation: Preliminary docs on 'git notes merge'
  git notes merge: Add automatic conflict resolvers (ours, theirs, union)
  git notes merge: Handle real, non-conflicting notes merges
  builtin/notes.c: Refactor creation of notes commits.
  git notes merge: Initial implementation handling trivial merges only
  builtin/notes.c: Split notes ref DWIMmery into a separate function
  notes.c: Use two newlines (instead of one) when concatenating notes
  (trivial) t3303: Indent with tabs instead of spaces for consistency
  notes.h/c: Propagate combine_notes_fn return value to add_note() and beyond
  notes.h/c: Allow combine_notes functions to remove notes
  notes.c: Reorder functions in preparation for next commit
  ...

Conflicts:
	builtin.h
2010-12-08 11:24:12 -08:00
Junio C Hamano
7d43de925b Merge branch 'cb/maint-orphan-merge-noclobber'
* cb/maint-orphan-merge-noclobber:
  do not overwrite untracked during merge from unborn branch
2010-11-24 15:55:36 -08:00
Johan Herland
35d2fffdb8 Provide 'git merge --abort' as a synonym to 'git reset --merge'
Teach 'git merge' the --abort option, which verifies the existence of
MERGE_HEAD and then invokes 'git reset --merge' to abort the current
in-progress merge and attempt to reconstruct the pre-merge state.

The reason for adding this option is to provide a user interface for
aborting an in-progress merge that is consistent with the interface
for aborting a rebase ('git rebase --abort'), aborting the application
of a patch series ('git am --abort'), and aborting an in-progress notes
merge ('git notes merge --abort').

The patch includes documentation and testcases that explain and verify
the various scenarios in which 'git merge --abort' can run. The
testcases also document the cases in which 'git merge --abort' is
unable to correctly restore the pre-merge state (look for the '###'
comments towards the bottom of t/t7609-merge-abort.sh).

This patch has been improved by the following contributions:
- Jonathan Nieder: Move test documentation into test_description

Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-17 13:23:55 -08:00
Johan Herland
2a22c1b35d cmd_merge(): Parse options before checking MERGE_HEAD
Reorder the initial part of builtin/merge.c:cmd_merge() so that command-line
options are parsed _before_ we load the index and check for MERGE_HEAD
(and exits if it exists). This does not change the behaviour of 'git merge',
but is needed in preparation for the implementation of 'git merge --abort'
(which requires MERGE_HEAD to be present).

This patch has been improved by the following contributions:
- Junio C Hamano: fixup minor style issues

Thanks-to: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-17 13:23:55 -08:00
Clemens Buchacher
172b6428d0 do not overwrite untracked during merge from unborn branch
In case HEAD does not point to a valid commit yet, merge is
implemented as a hard reset. This will cause untracked files to be
overwritten.

Instead, assume the empty tree for HEAD and do a regular merge. An
untracked file will cause the merge to abort and do nothing. If no
conflicting files are present, the merge will have the same effect
as a hard reset.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-15 09:27:33 -08:00
Matthieu Moy
13931236b9 Change incorrect "remote branch" to "remote tracking branch" in C code
(Just like we did for documentation already)

In the process, we change "non-remote branch" to "branch outside the
refs/remotes/ hierarchy" to avoid the ugly "non-remote-tracking branch".
The new formulation actually corresponds to how the code detects this
case (i.e. prefixcmp(refname, "refs/remotes")).

Also, we use 'remote-tracking branch' in generated merge messages (by
merge an fmt-merge-msg).

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-03 09:20:47 -07:00
Junio C Hamano
75b17fee72 Merge branch 'jf/merge-ignore-ws'
* jf/merge-ignore-ws:
  merge-recursive: options to ignore whitespace changes
  merge-recursive --patience
  ll-merge: replace flag argument with options struct
  merge-recursive: expose merge options for builtin merge
2010-10-26 21:40:54 -07:00
Nguyễn Thái Ngọc Duy
da53eec688 merge -h: show usage even with corrupt index
Part of a campaign to make sure "git <command> -h" works correctly
when run from distractingly bad repositories.

[jn: with rewritten log message and tests]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-10-22 11:04:53 -07:00
Junio C Hamano
02ef0ed710 Merge branch 'rr/fmt-merge-msg'
* rr/fmt-merge-msg:
  t6200-fmt-merge-msg: Exercise '--log' to configure shortlog length
  t6200-fmt-merge-msg: Exercise 'merge.log' to configure shortlog length
  merge: Make 'merge.log' an integer or boolean option
  merge: Make '--log' an integer option for number of shortlog entries
  fmt_merge_msg: Change fmt_merge_msg API to accept shortlog_len

Conflicts:
	builtin/merge.c
2010-09-29 13:48:20 -07:00
Ramkumar Ramachandra
bda3b8ff17 merge: Make 'merge.log' an integer or boolean option
Make 'merge.log' an integer or boolean option to set the number of
shortlog entries to display in the merge commit. Note that it defaults
to false, and that true means a default value of 20. Also update
corresponding documentation.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Thanks-to: Johannes Sixt <j.sixt@viscovery.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-09 11:39:23 -07:00
Ramkumar Ramachandra
96e9420cd3 merge: Make '--log' an integer option for number of shortlog entries
Change the command-line '--log' option from a boolean option to an
integer option, and parse the optional integer provided on the
command-line into the 'shortlog_len' variable. Also update the
documentation accordingly.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Reported-by: Yaroslav Halchenko <debian@onerussian.com>
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Thanks-to: Johannes Sixt <j.sixt@viscovery.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-09 11:39:20 -07:00
Ramkumar Ramachandra
1876166aaa fmt_merge_msg: Change fmt_merge_msg API to accept shortlog_len
Give "shortlog_len" parameter to the fmt_merge_msg(), remove its
"merge_summary" parameter, and remove fmt_merge_msg_shortlog() function.
In the updated API, shortlog_len == 0 means no shortlog is given.

The parameter "merge_title" controls if the title of the merge commit is
autogenerated (it reads something like "Merge branch ..."), and typically
it is set to true when the caller does not give its own message.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Mentored-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-09 11:39:20 -07:00
Junio C Hamano
c208e05bd9 Merge branch 'dg/local-mod-error-messages'
* dg/local-mod-error-messages:
  t7609-merge-co-error-msgs: test non-fast forward case too.
  Move "show_all_errors = 1" to setup_unpack_trees_porcelain()
  setup_unpack_trees_porcelain: take the whole options struct as parameter
  Move set_porcelain_error_msgs to unpack-trees.c and rename it

Conflicts:
	merge-recursive.c
2010-09-03 22:23:49 -07:00
Junio C Hamano
460645a8c3 Merge branch 'jn/merge-custom-no-trivial'
* jn/merge-custom-no-trivial:
  t7606: Avoid using head as a file name
  merge: let custom strategies intervene in trivial merges
  t7606 (merge-theirs): modernize style
2010-09-03 09:43:43 -07:00
Junio C Hamano
2b916ffa18 Merge branch 'jn/update-contrib-example-merge'
* jn/update-contrib-example-merge: (24 commits)
  merge script: learn --[no-]rerere-autoupdate
  merge script: notice @{-1} shorthand
  merge script: handle --no-ff --no-commit correctly
  merge script: --ff-only to disallow true merge
  merge script: handle many-way octopus
  merge script: handle -m --log correctly
  merge script: forbid merge -s index
  merge script: allow custom strategies
  merge script: merge -X<option>
  merge script: improve log message subject
  merge script: refuse to merge during merge
  merge script: tweak unmerged files message to match builtin
  merge script: --squash, --ff from unborn branch are errors
  fmt-merge-msg -m to override merge title
  merge-base --independent to print reduced parent list in a merge
  merge-base --octopus to mimic show-branch --merge-base
  Documentation: add a SEE ALSO section for merge-base
  t6200 (fmt-merge-msg): style nitpicks
  t6010 (merge-base): modernize style
  t7600 (merge): test merge from branch yet to be born
  ...
2010-09-03 09:43:42 -07:00
Junio C Hamano
8aed4a5e38 Merge branch 'jn/merge-renormalize'
* jn/merge-renormalize:
  merge-recursive --renormalize
  rerere: never renormalize
  rerere: migrate to parse-options API
  t4200 (rerere): modernize style
  ll-merge: let caller decide whether to renormalize
  ll-merge: make flag easier to populate
  Documentation/technical: document ll_merge
  merge-trees: let caller decide whether to renormalize
  merge-trees: push choice to renormalize away from low level
  t6038 (merge.renormalize): check that it can be turned off
  t6038 (merge.renormalize): try checkout -m and cherry-pick
  t6038 (merge.renormalize): style nitpicks
  Don't expand CRLFs when normalizing text during merge
  Try normalizing files to avoid delete/modify conflicts when merging
  Avoid conflicts when merging branches with mixed normalization

Conflicts:
	builtin/rerere.c
	t/t4200-rerere.sh
2010-09-03 09:43:41 -07:00
Matthieu Moy
5e65ee35dd Move "show_all_errors = 1" to setup_unpack_trees_porcelain()
Not only this makes the code clearer since setting up the porcelain error
message is meant to work with show_all_errors, but this fixes a call to
setup_unpack_trees_porcelain() in git_merge_trees() which did not set
show_all_errors.

add_rejected_path() used to double-check whether it was running in
plumbing mode. This check was ineffective since it was setting
show_all_errors too late for traverse_trees() to see it, and is made
useless by this patch. Remove it.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-03 09:31:51 -07:00
Matthieu Moy
e294030fe8 setup_unpack_trees_porcelain: take the whole options struct as parameter
This is a preparation patch to let setup_unpack_trees_porcelain set
show_all_errors itself.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-03 09:31:41 -07:00
Matthieu Moy
dc1166e685 Move set_porcelain_error_msgs to unpack-trees.c and rename it
The function is currently dealing only with error messages, but the
intent of calling it is really to notify the unpack-tree mechanics that
it is running in porcelain mode.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-03 09:31:28 -07:00
Jonathan Nieder
635a7bb1d8 merge-recursive: expose merge options for builtin merge
There are two very similar blocks of code that recognize options for
the "recursive" merge strategy.  Unify them.

No functional change intended.

Cc: Avery Pennarun <apenwarr@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-26 09:05:02 -07:00
Junio C Hamano
b95d0a2f8c Merge branch 'gb/split-cmdline-errmsg'
* gb/split-cmdline-errmsg:
  split_cmdline: Allow caller to access error string
2010-08-21 23:28:55 -07:00
Jonathan Nieder
b81f925f70 merge: do not mistake (ancestor of) tag for branch
If no branch 'foo' exists but a tag 'foo' does, then
git merge foo^ results in

	Merge branch 'foo' (early part)

as a commit message, because the relevant code path checks that
refs/heads/foo is a valid refname for writing rather than for
reading.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-18 14:02:02 -07:00
Jonathan Nieder
52b48ef1e4 merge: let custom strategies intervene in trivial merges
As v1.6.1-rc1~294^2 (2008-08-23) explains, custom merge strategies
do not even kick in when the merge is truly trivial.  But they
should, since otherwise a custom “--strategy=theirs” is not useful.

Perhaps custom strategies should not allow fast-forward either.  This
patch does not make that change, since it is less important (because
it is always possible to explicitly use --no-ff).

Reported-by: Yaroslav Halchenko <debian@onerussian.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-15 20:09:48 -07:00
Matthieu Moy
e6c111b4c0 unpack_trees: group error messages by type
When an error is encountered, it calls add_rejected_file() which either
- directly displays the error message and stops if in plumbing mode
  (i.e. if show_all_errors is not initialized at 1)
- or stores it so that it will be displayed at the end with display_error_msgs(),

Storing the files by error type permits to have a list of files for
which there is the same error instead of having a serie of almost
identical errors.

As each bind_overlap error combines a file and an old file, a list cannot be
done, therefore, theses errors are not stored but directly displayed.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-11 10:36:06 -07:00
Diane Gasselin
23cbf11b5c merge-recursive: porcelain messages for checkout
A porcelain message was first added in checkout.c in the commit
8ccba008 (Junio C Hamano, Sat May 17 21:03:49 2008, unpack-trees:
allow Porcelain to give different error messages) to give better feedback
in the case of merge errors.

This patch adapts the porcelain messages for the case of checkout
instead. This way, when having a checkout error, "merge" no longer
appears in the error message.

While we're there, we add an advice in the case of
would_lose_untracked_file.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-11 10:36:03 -07:00
Matthieu Moy
08353ebbab Turn unpack_trees_options.msgs into an array + enum
The list of error messages was introduced as a structure, but an array
indexed over an enum is more flexible, since it allows one to store a
type of error message (index in the array) in a variable.

This change needs to rename would_lose_untracked ->
would_lose_untracked_file to avoid a clash with the function
would_lose_untracked in merge-recursive.c.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-11 10:36:00 -07:00
Greg Brockman
ad9ac6db5d split_cmdline: Allow caller to access error string
This allows the caller to add its own error message to that returned
by split_cmdline.  Thus error output following a failed split_cmdline
can be of the form

fatal: Bad alias.test string: cmdline ends with \

rather than

error: cmdline ends with \
fatal: Bad alias.test string

Signed-off-by: Greg Brockman <gdb@mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-11 09:36:23 -07:00
Jonathan Nieder
7610fa57e6 merge-recursive --renormalize
Teach "git merge-recursive" a --renormalize option to enable the
merge.renormalize configuration.  The --no-renormalize option can
be used to override it in the negative.

So in the future, you might be able to, e.g.:

	git checkout -m -Xrenormalize otherbranch

or

	git revert -Xrenormalize otherpatch

or

	git pull --rebase -Xrenormalize

The bad part: merge.renormalize is still not honored for most
commands.  And it reveals lots of places that -X has not been plumbed
in (so we get "git merge -Xrenormalize" but not much else).

NEEDSWORK: tests

Cc: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-06 09:20:02 -07:00
Eyvind Bernhardsen
f217f0e86d Avoid conflicts when merging branches with mixed normalization
Currently, merging across changes in line ending normalization is
painful since files containing CRLF will conflict with normalized files,
even if the only difference between the two versions is the line
endings.  Additionally, any "real" merge conflicts that exist are
obscured because every line in the file has a conflict.

Assume you start out with a repo that has a lot of text files with CRLF
checked in (A):

      o---C
     /     \
    A---B---D

B: Add "* text=auto" to .gitattributes and normalize all files to
   LF-only

C: Modify some of the text files

D: Try to merge C

You will get a ridiculous number of LF/CRLF conflicts when trying to
merge C into D, since the repository contents for C are "wrong" wrt the
new .gitattributes file.

Fix ll-merge so that the "base", "theirs" and "ours" stages are passed
through convert_to_worktree() and convert_to_git() before a three-way
merge.  This ensures that all three stages are normalized in the same
way, removing from consideration differences that are only due to
normalization.

This feature is optional for now since it changes a low-level mechanism
and is not necessary for the majority of users.  The "merge.renormalize"
config variable enables it.

Signed-off-by: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-02 15:43:15 -07:00
Junio C Hamano
8642abc764 Merge branch 'tc/merge-m-log'
* tc/merge-m-log:
  merge: --log appends shortlog to message if specified
  fmt-merge-msg: add function to append shortlog only
  fmt-merge-msg: refactor merge title formatting
  fmt-merge-msg: minor refactor of fmt_merge_msg()
  merge: rename variable
  merge: update comment
  t7604-merge-custom-message: show that --log doesn't append to -m
  t7604-merge-custom-message: shift expected output creation

Conflicts:
	builtin.h
2010-06-18 11:16:54 -07:00
Tay Ray Chuan
f0ecac2b70 merge: --log appends shortlog to message if specified
When the user specifies a message, use fmt_merge_msg_shortlog() to
append the shortlog.

Previously, when a message was specified, we ignored the merge title
("Merge <foo> into <bar>") and shortlog from fmt_merge_msg().

Update the documentation for -m to reflect this too.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-10 12:02:20 -07:00
Tay Ray Chuan
97d45bcb2f merge: rename variable
It is more accurate to call it 'merge_names' instead of 'msg', as it
does not contain the final message.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-10 11:57:33 -07:00
Tay Ray Chuan
7558922028 merge: update comment
ce9d823 (merge: do not add standard message when message is given with
-m option) changed the behaviour of the code that the comment addressed,
but the comment was not similarly updated.

Fix this.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-10 11:57:32 -07:00
Junio C Hamano
f78eeeaf55 Merge branch 'cc/revert-strategy'
* cc/revert-strategy:
  revert: add "--strategy" option to choose merge strategy
  merge: make function try_merge_command non static
  merge: refactor code that calls "git merge-STRATEGY"
  revert: refactor merge recursive code into its own function
  revert: use strbuf to refactor the code that writes the merge message

Conflicts:
	builtin/revert.c
2010-05-08 22:34:47 -07:00
Christian Couder
c674d05273 merge: make function try_merge_command non static
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-01 11:14:10 -07:00
Christian Couder
3f9083cde3 merge: refactor code that calls "git merge-STRATEGY"
In the try_merge_strategy() function, when the strategy is "recursive"
or "subtree", the merge_recursive() function is called.
Otherwise we launch a "git merge-STRATEGY" process.

To make it possible to reuse code that launches a "git merge-STRATEGY"
process, this patch refactors this code into a new try_merge_command()
function.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-01 11:14:10 -07:00
Junio C Hamano
99f5b0845a Merge branch 'cc/cherry-pick-ff'
* cc/cherry-pick-ff:
  revert: fix tiny memory leak in cherry-pick --ff
  rebase -i: use new --ff cherry-pick option
  Documentation: describe new cherry-pick --ff option
  cherry-pick: add tests for new --ff option
  revert: add --ff option to allow fast forward when cherry-picking
  builtin/merge: make checkout_fast_forward() non static
  parse-options: add parse_options_concat() to concat options
2010-03-28 21:52:28 -07:00
Linus Torvalds
81b50f3ce4 Move 'builtin-*' into a 'builtin/' subdirectory
This shrinks the top-level directory a bit, and makes it much more
pleasant to use auto-completion on the thing. Instead of

	[torvalds@nehalem git]$ em buil<tab>
	Display all 180 possibilities? (y or n)
	[torvalds@nehalem git]$ em builtin-sh
	builtin-shortlog.c     builtin-show-branch.c  builtin-show-ref.c
	builtin-shortlog.o     builtin-show-branch.o  builtin-show-ref.o
	[torvalds@nehalem git]$ em builtin-shor<tab>
	builtin-shortlog.c  builtin-shortlog.o
	[torvalds@nehalem git]$ em builtin-shortlog.c

you get

	[torvalds@nehalem git]$ em buil<tab>		[type]
	builtin/   builtin.h
	[torvalds@nehalem git]$ em builtin		[auto-completes to]
	[torvalds@nehalem git]$ em builtin/sh<tab>	[type]
	shortlog.c     shortlog.o     show-branch.c  show-branch.o  show-ref.c     show-ref.o
	[torvalds@nehalem git]$ em builtin/sho		[auto-completes to]
	[torvalds@nehalem git]$ em builtin/shor<tab>	[type]
	shortlog.c  shortlog.o
	[torvalds@nehalem git]$ em builtin/shortlog.c

which doesn't seem all that different, but not having that annoying
break in "Display all 180 possibilities?" is quite a relief.

NOTE! If you do this in a clean tree (no object files etc), or using an
editor that has auto-completion rules that ignores '*.o' files, you
won't see that annoying 'Display all 180 possibilities?' message - it
will just show the choices instead.  I think bash has some cut-off
around 100 choices or something.

So the reason I see this is that I'm using an odd editory, and thus
don't have the rules to cut down on auto-completion.  But you can
simulate that by using 'ls' instead, or something similar.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-22 14:29:41 -08:00