Commit Graph

102 Commits

Author SHA1 Message Date
Ramkumar Ramachandra
80e1f79188 revert: Introduce struct to keep command-line options
The current code uses a set of file-scope static variables to tell the
cherry-pick/ revert machinery how to replay the changes, and
initializes them by parsing the command-line arguments.  In later
steps in this series, we would like to introduce an API function that
calls into this machinery directly and have a way to tell it what to
do.  Hence, introduce a structure to group these variables, so that
the API can take them as a single replay_options parameter.  The only
exception is the variable "me" -- remove it since it not an
independent option, and can be inferred from the action.

Unfortunately, this patch introduces a minor regression.  Parsing
strategy-option violates a C89 rule: Initializers cannot refer to
variables whose address is not known at compile time.  Currently, this
rule is violated by some other parts of Git as well, and it is
possible to get GCC to report these instances using the "-std=c89
-pedantic" option.

Inspired-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:43 -07:00
Ramkumar Ramachandra
708f9d96d9 revert: Eliminate global "commit" variable
Functions which act on commits currently rely on a file-scope static
variable to be set before they're called.  Consequently, the API and
corresponding callsites are ugly and unclear.  Remove this variable
and change their API to accept the commit to act on as additional
argument so that the callsites change from looking like

  commit = prepare_a_commit();
  act_on_commit();

to looking like

  commit = prepare_a_commit();
  act_on_commit(commit);

This change is also in line with our long-term goal of exposing some
of these functions through a public API.

Inspired-by: Christian Couder <chriscool@tuxfamily.org>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:42 -07:00
Ramkumar Ramachandra
54decbd4d8 revert: Rename no_replay to record_origin
The "-x" command-line option is used to record the name of the
original commits being picked in the commit message.  The variable
corresponding to this option is named "no_replay" for historical
reasons; the name is especially confusing because the term "replay" is
used to describe what cherry-pick does (for example, in the
documentation of the "--mainline" option).  So, give the variable
corresponding to the "-x" command-line option a better name:
"record_origin".

Mentored-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:42 -07:00
Ramkumar Ramachandra
a2ec3ad28f revert: Don't check lone argument in get_encoding
The only place get_encoding uses the global "commit" variable is when
writing an error message explaining that its lone argument was NULL.
Since the function's only caller ensures that a NULL argument isn't
passed, we can remove this check with two beneficial consequences:

1. Since the function doesn't use the global "commit" variable any
   more, it won't need to change when we eliminate the global variable
   later in the series.
2. Translators no longer need to localize an error message that will
   never be shown.

Suggested-by: Junio C Hamano <gitster@pobox.com>
Mentored-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:42 -07:00
Ramkumar Ramachandra
be33c46cda revert: Simplify and inline add_message_to_msg
The add_message_to_msg function has some dead code, an unclear API,
only one callsite.  While it originally intended fill up an empty
commit message with the commit object name while picking, it really
doesn't do this -- a bug introduced in v1.5.1-rc1~65^2~2 (Make
git-revert & git-cherry-pick a builtin, 2007-03-01).  Today, tests in
t3505-cherry-pick-empty.sh indicate that not filling up an empty
commit message is the desired behavior.  Re-implement and inline the
function accordingly, with a beneficial side-effect: don't dereference
a NULL pointer when the commit doesn't have a delimeter after the
header.

Helped-by: Junio C Hamano <gitster@pobox.com>
Mentored-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:41 -07:00
Ramkumar Ramachandra
38ef61cfde advice: Introduce error_resolve_conflict
Enable future callers to report a conflict and not die immediately by
introducing a new function called error_resolve_conflict.
Re-implement die_resolve_conflict as a call to error_resolve_conflict
followed by a call to die.  Consequently, the message printed by
die_resolve_conflict changes from

  fatal: 'commit' is not possible because you have unmerged files.
         Please, fix them up in the work tree ...
         ...

to

  error: 'commit' is not possible because you have unmerged files.
  hint: Fix them up in the work tree ...
  hint: ...
  fatal: Exiting because of an unresolved conflict.

Hints are printed using the same advise function introduced in
v1.7.3-rc0~26^2~3 (Introduce advise() to print hints, 2010-08-11).

Inspired-by: Christian Couder <chistian.couder@gmail.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:41 -07:00
Jeff King
fad2652673 revert: allow reverting a root commit
Although it is probably an uncommon operation, there is no
reason to disallow it, as it works just fine. It is the
reverse of a cherry-pick of a root commit, which is already
allowed.

We do have to tweak one check on whether we have a merge
commit, which assumed we had at least one parent.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-16 13:01:45 -07:00
Ramkumar Ramachandra
5e31075a19 revert: Hide '-r' option in default usage
The '-r' command-line option is a no-op provided only for backward
compatiblity since abd6970 (cherry-pick: make -r the default, 2006-10-05),
and somehow ended up surviving across reimplementation in C at 9509af6
(Make git-revert & git-cherry-pick a builtin, 2007-03-01) and another
rewrite of the command line parser at f810379 (Make builtin-revert.c use
parse_options, 2007-10-07).  We should have stopped advertising the option
long time ago.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-04-13 11:02:49 -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
Ævar Arnfjörð Bjarmason
cb6aeb22ac i18n: git-revert split up "could not revert/apply" message
Split up the "could not %s %s... %s" message into "could not revert
%s... %s" and "could not apply %s... %s". This makes it easier for
translators to understand the message.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-09 23:52:57 -08:00
Ævar Arnfjörð Bjarmason
b9c993e017 i18n: git-revert literal "me" messages
Translate messages that use the `me' variable. These are all error
messages referencing the command name, so the name shouldn't be
translated.

Reported-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-09 23:52:57 -08:00
Ævar Arnfjörð Bjarmason
d3ee177e50 i18n: git-revert "Your local changes" message
Translate the "Your local changes [...]" message without using the
`me' variable, instead split up the two messages so translators can
translate the whole messages as-is.

Reported-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-09 23:52:57 -08:00
Ævar Arnfjörð Bjarmason
f30f71ce7a i18n: git-revert basic messages
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-09 23:52:57 -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
Jay Soffian
37f7a85793 Teach commit about CHERRY_PICK_HEAD
Previously the user was advised to use commit -c CHERRY_PICK_HEAD after
a conflicting cherry-pick. While this would preserve the original
commit's authorship, it would sadly discard cherry-pick's carefully
crafted MERGE_MSG (which contains the list of conflicts as well as the
original commit-id in the case of cherry-pick -x).

On the other hand, if a bare 'commit' were performed, it would preserve
the MERGE_MSG while resetting the authorship.

In other words, there was no way to simultaneously take the authorship
from CHERRY_PICK_HEAD and the commit message from MERGE_MSG.

This change fixes that situation. A bare 'commit' will now take the
authorship from CHERRY_PICK_HEAD and the commit message from MERGE_MSG.
If the user wishes to reset authorship, that must now be done explicitly
via --reset-author.

A side-benefit of passing commit authorship along this way is that we
can eliminate redundant authorship parsing code from revert.c.

(Also removed an unused include from revert.c)

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-21 22:58:32 -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
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
5eee142c89 Merge branch 'jn/cherry-pick-refresh-index'
* jn/cherry-pick-refresh-index:
  cherry-pick/revert: transparently refresh index
2010-11-29 17:52:34 -08:00
Jonathan Nieder
f6ce1f2588 cherry-pick/revert: transparently refresh index
A stat-dirty index is not a detail that ought to concern the operator
of porcelain such as "git cherry-pick".

Without this change, a cherry-pick after copying a worktree with rsync
errors out with a misleading message.

	$ git cherry-pick build/top
	error: Your local changes to 'file.h' would be overwritten by merge.  Aborting.
	Please, commit your changes or stash them before you can merge.

Noticed-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-10 08:49:26 -08:00
Brandon Casey
6355e505ba builtin/revert.c: don't dereference a NULL pointer
cherry-pick will segfault when transplanting a root commit if the --ff
option is used.  This happens because the "parent" pointer is set to NULL
when the commit being cherry-picked has no parents.  Later, when "parent"
is dereferenced, the cherry-pick segfaults.

Fix this by checking whether "parent" is NULL before dereferencing it and
add a test for this case of cherry-picking a root commit with --ff.

Reported-by: Zbyszek Szmek <zbyszek@in.waw.pl>
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-27 10:39:54 -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
Junio C Hamano
ae76cb90cb Merge branch 'jn/cherry-revert-message-clean-up'
* jn/cherry-revert-message-clean-up:
  tests: fix syntax error in "Use advise() for hints" test
  cherry-pick/revert: Use advise() for hints
  cherry-pick/revert: Use error() for failure message
  Introduce advise() to print hints
  Eliminate “Finished cherry-pick/revert” message
  t3508: add check_head_differs_from() helper function and use it
  revert: improve success message by adding abbreviated commit sha1
  revert: don't print "Finished one cherry-pick." if commit failed
  revert: refactor commit code into a new run_git_commit() function
  revert: report success when using option --strategy
2010-08-31 16:25:11 -07:00
Junio C Hamano
165dc789d5 Merge branch 'cc/find-commit-subject'
* cc/find-commit-subject:
  blame: use find_commit_subject() instead of custom code
  merge-recursive: use find_commit_subject() instead of custom code
  bisect: use find_commit_subject() instead of custom code
  revert: rename variables related to subject in get_message()
  revert: refactor code to find commit subject in find_commit_subject()
  revert: fix off by one read when searching the end of a commit subject
2010-08-18 12:46:55 -07:00
Jonathan Nieder
314eeb6e48 cherry-pick/revert: Use advise() for hints
When cherry-pick fails after picking a large series of commits, it can
be hard to pick out the error message and advice.  Prefix the advice
with “hint: ” to help.

Before:

    error: could not apply 7ab78c9... foo
      After resolving the conflicts,
    mark the corrected paths with 'git add <paths>' or 'git rm <paths>'
    and commit the result with:

            git commit -c 7ab78c9a7898b87127365478431289cb98f8d98f

After:

    error: could not apply 7ab78c9... foo
    hint: after resolving the conflicts, mark the corrected paths
    hint: with 'git add <paths>' or 'git rm <paths>'
    hint: and commit the result with 'git commit -c 7ab78c9'

Noticed-by: Thomas Rast <trast@student.ethz.ch>
Encouraged-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-15 19:12:08 -07:00
Jonathan Nieder
981ff5c37a cherry-pick/revert: Use error() for failure message
When cherry-pick fails after picking a large series of commits, it can
be hard to pick out the error message and advice.  Clarify the error
and prefix it with “error: ” to help.

Before:

	Automatic cherry-pick failed.  [...advice...]

After:

	error: could not apply 7ab78c9... Do something neat.
	[...advice...]

Noticed-by: Thomas Rast <trast@student.ethz.ch>
Encouraged-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-15 19:12:07 -07:00
Jonathan Nieder
2a41dfb03b Introduce advise() to print hints
Like error(), warn(), and die(), advise() prints a short message
with a formulaic prefix to stderr.

It is local to revert.c for now because I am not sure this is
the right API (we may want to take an array of advice lines or a
boolean argument for easy suppression of unwanted advice).

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-15 19:12:05 -07:00
Jonathan Nieder
130ab8ab9c Eliminate “Finished cherry-pick/revert” message
When cherry-pick was written (v0.99.6~63, 2005-08-27), “git commit”
was quiet, and the output from cherry-pick provided useful information
about the progress of a rebase.

Now next to the output from “git commit”, the cherry-pick notification
is so much noise (except for the name of the picked commit).

 $ git cherry-pick ..topic
 Finished cherry-pick of 499088b.
 [detached HEAD 17e1ff2] Move glob module to libdpkg
  Author: Guillem Jover <guillem@debian.org>
  8 files changed, 12 insertions(+), 9 deletions(-)
  rename {src => lib/dpkg}/glob.c (98%)
  rename {src => lib/dpkg}/glob.h (93%)
 Finished cherry-pick of ae947e1.
 [detached HEAD 058caa3] libdpkg: Add missing symbols to Versions script
  Author: Guillem Jover <guillem@debian.org>
  1 files changed, 2 insertions(+), 0 deletions(-)
 $

The noise is especially troublesome when sifting through the output of
a rebase or multiple cherry-pick that eventually failed.

With the commit subject, it is already not hard to figure out where
the commit came from.  So drop the “Finished” message.

Cc: Christian Couder <chriscool@tuxfamily.org>
Cc: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-15 19:12:00 -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
Christian Couder
dfe7effe7d revert: rename variables related to subject in get_message()
Generic-looking pointer variable "p" was used only to point at subject
string and had a rather lifespan.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-23 16:10:58 -07:00
Christian Couder
11af2aaed6 revert: refactor code to find commit subject in find_commit_subject()
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-23 16:09:28 -07:00
Christian Couder
2c048a3038 revert: fix off by one read when searching the end of a commit subject
A test case is added but the problem can only be seen when running
the test case with --valgrind.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-23 16:08:14 -07:00
Christian Couder
f29b5e06b3 revert: improve success message by adding abbreviated commit sha1
Instead of saying "Finished one cherry-pick." or "Finished one revert.",
we now say "Finished cherry-pick of commit <abbreviated sha1>." or
"Finished revert of commit <abbreviated sha1>." which is more informative,
especially when cherry-picking or reverting many commits.

In case of failure the message is now "Automatic cherry-pick of commit
<abbreviated sha1> failed." instead of "Automatic cherry-pick failed."

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-16 15:26:03 -07:00
Christian Couder
3b2c5b6df4 revert: don't print "Finished one cherry-pick." if commit failed
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-16 15:22:00 -07:00
Christian Couder
5df16453d4 revert: refactor commit code into a new run_git_commit() function
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-16 15:21:52 -07:00
Christian Couder
7b53b92fdb revert: report success when using option --strategy
"git cherry-pick foo" has always reported success with
"Finished one cherry-pick" but "cherry-pick --strategy"
does not print anything. So move the code to write that
message from do_recursive_merge() to do_cherry_pick()
so other strategies can share it.

This patch also refactors the code that prints a message
like "Automatic cherry-pick failed. <help message>". This
code was duplicated in both do_recursive_merge() and
do_pick_commit().

To do that, now do_recursive_merge() returns an int to signal
success or failure. And in case of failure we just return 1
from do_pick_commit() instead of doing "exit(1)" from either
do_recursive_merge() or do_pick_commit().

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-16 15:20:58 -07:00
Jonathan Nieder
e0ef8495e9 revert: do not rebuild argv on heap
Set options in struct rev_info directly so we can reuse the
arguments collected from parse_options without modification.

This is just a cleanup; no noticeable change is intended.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-29 10:36:13 -07:00
Christian Couder
f873a273d1 revert: accept arbitrary rev-list options
This can be useful to do something like:

git rev-list --reverse master -- README | git cherry-pick -n --stdin

without using xargs.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-25 08:55:48 -07:00
Christian Couder
7e2bfd3f99 revert: allow cherry-picking more than one commit
This makes it possible to pass many commits or ranges of
commits to "git cherry-pick" and to "git revert" to process
many commits instead of just one.

In fact commits are now enumerated with an equivalent of

	git rev-list --no-walk "$@"

so all the following are now possible:

	git cherry-pick master~2..master
	git cherry-pick ^master~2 master
	git cherry-pick master^ master

The following should be possible but does not work:

	git cherry-pick -2 master

because "git rev-list --no-walk -2 master" only outputs
one commit as "--no-walk" seems to take over "-2".

And there is currently no way to continue cherry-picking or
reverting if there is a problem with one commit. It's also
not possible to abort the whole process. Some future work
should provide the --continue and --abort options to do
just that.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 10:09:56 -07:00
Christian Couder
4b2095622f revert: change help_msg() to take no argument
This is needed because the following commits will make it
possible to cherry-pick many commits instead of just one.

So it will be possible to pass for example ranges of commits
to "git cherry-pick" and this means that it will not be
possible to use the arguments passed to "git cherry-pick" in
the help message.

The help message will have to use the sha1 of the currently
processed commit.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 10:09:52 -07:00
Christian Couder
7af46595b2 revert: refactor code into a do_pick_commit() function
This is needed because we are going to make it possible
to cherry-pick many commits instead of just one in the following
commits. And we will be able to do that by just calling
do_pick_commit() once for each commit to cherry-pick.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 10:09:47 -07:00
Christian Couder
2fb0e14f40 revert: use run_command_v_opt() instead of execv_git_cmd()
This is needed by the following commits, because we are going
to cherry pick many commits instead of just one.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 10:09:41 -07:00
Christian Couder
831244bd0d revert: cleanup code for -x option
There was some dead code and option -x appeared in the short
help message of git revert (when running "git revert -h")
which was wrong.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 10:09:38 -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
Jonathan Nieder
43acff34b9 cherry-pick: do not dump core when iconv fails
When cherry-picking, usually the new and old commit encodings are both
UTF-8.  Most old iconv implementations do not support this trivial
conversion, so on old platforms, out->message remains NULL, and later
attempts to read it segfault.

Fix this by noticing the input and output encodings match and skipping
the iconv step, like the other reencode_string() call sites already do.
Also stop segfaulting on other iconv failures: if iconv fails for some
other reason, the best we can do is to pass the old message through.

This fixes a regression introduced in v1.7.1-rc0~15^2~2 (revert:
clarify label on conflict hunks, 2010-03-20).

Reported-by: Andreas Krey <a.krey@gmx.de>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-08 16:56:21 -07:00
Junio C Hamano
16b8a3e4b9 Merge branch 'jn/merge-diff3-label'
* jn/merge-diff3-label:
  merge-recursive: add a label for ancestor
  cherry-pick, revert: add a label for ancestor
  revert: clarify label on conflict hunks
  compat: add mempcpy()
  checkout -m --conflict=diff3: add a label for ancestor
  merge_trees(): add ancestor label parameter for diff3-style output
  merge_file(): add comment explaining behavior wrt conflict style
  checkout --conflict=diff3: add a label for ancestor
  ll_merge(): add ancestor label parameter for diff3-style output
  merge-file --diff3: add a label for ancestor
  xdl_merge(): move file1 and file2 labels to xmparam structure
  xdl_merge(): add optional ancestor label to diff3-style output
  tests: document cherry-pick behavior in face of conflicts
  tests: document format of conflicts from checkout -m

Conflicts:
	builtin/revert.c
2010-04-03 12:28:41 -07:00
Christian Couder
91e5259896 revert: add "--strategy" option to choose merge strategy
This patch makes it possible to use a different merge strategy when
cherry-picking. This is usefull mainly for debugging purposes as it
allows to see if some failures are caused by the merge strategy used or
not.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-01 11:14:11 -07:00
Christian Couder
ae8c79fd8f revert: refactor merge recursive code into its own function
The code that is used to do a recursive merge is extracted from
the revert_or_cherry_pick() function and put into a new
do_recursive_merge() 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
Christian Couder
bc84a7fbac revert: use strbuf to refactor the code that writes the merge message
The code in this commit was written by Stephan Beyer for the sequencer
GSoC project:

    git://repo.or.cz/git/sbeyer.git

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-01 11:14:09 -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
Jonathan Nieder
bf975d379d cherry-pick, revert: add a label for ancestor
When writing conflict hunks in ‘diff3 -m’ format, also add a label to
the common ancestor.  Especially in a cherry-pick, it is not immediately
obvious without such a label what the common ancestor represents.

git rerere does not have trouble parsing the new output and its preimage
ids are unchanged since it includes its own code for recreating conflict
hunks.  No other code in git parses conflict hunks.

Requested-by: Stefan Monnier <monnier@iro.umontreal.ca>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-20 20:36:11 -07:00
Jonathan Nieder
d68565402a revert: clarify label on conflict hunks
When reverting a commit, the commit being merged is not the commit
to revert itself but its parent.  Add “parent of” to the conflict
hunk label to make this more clear.

The conflict hunk labels are all pieces of a single string written in
the new get_message() function.  Avoid some complication by using
mempcpy to advance a pointer as the result is written.

Also free the corresponding temporary buffer (it was leaked before).
This is not important because it is a small one-time allocation.  It
would become a memory leak if unnoticed when libifying revert.

This patch uses calls to strlen() instead of integer constants in some
places.  GCC will compute the length at compile time; I am not sure
about other compilers, but this is not performance-critical anyway.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-20 20:36:11 -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