As described in Documentation/howto/revert-a-faulty-merge.txt, re-merging
from a previously reverted a merge of a side branch may need a revert of
the revert beforehand. Record against which parent the revert was made in
the commit, so that later the user can figure out what went on.
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This changes the "die_on_error" boolean parameter to a mere "flags", and
changes the existing callers of hold_lock_file_for_update/append()
functions to pass LOCK_DIE_ON_ERROR.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Refactored merge-recursive interface may still not be ideal but it already
allows us to make a direct call to merge_tree().
One regression is that the status message is lost as there is no way to
flush them from outside the refactored library code yet.
[jc: initial version by Miklos, with moderate amount of fixup by me]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Cherry-picking can be helped by reusing previous confliction
resolution by invoking rerere automatically.
Signed-off-by: Abhijit Menon-Sen <ams@toroid.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When you misuse a git command, you are shown the usage string.
But this is currently shown in the dashed form. So if you just
copy what you see, it will not work, when the dashed form
is no longer supported.
This patch makes git commands show the dash-less version.
For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh
generates a dash-less usage string now.
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A root commit couldn't be cherry-picked. But its semantics can be
defined as simply merging two trees by overlaying disjoint parts
and merging overlapping files without any common ancestor. You
should be able to rebase originally independent branches on top of
another branch by using this.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git_config() only had a function parameter, but no callback data
parameter. This assumes that all callback functions only modify
global variables.
With this patch, every callback gets a void * parameter, and it is hoped
that this will help the libification effort.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I often find myself pulling patches off of other peoples trees using
cherry-pick, and following it with an immediate 'git commit --amend -s'
command. Eliminate the need for a double commit by allowing signoff on a
cherry-pick or revert.
Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The previous code mistakenly used wt_status_prepare to check whether the
index had anything commitable in it; however, that function is just an
init function, and will never report a dirty index.
The correct way with wt_status_* would be to call wt_status_print with the
output pointing to /dev/null or similar. However, that does extra work by
both examining the working tree and spewing status information to nowhere.
Instead, let's just implement the useful subset of wt_status_print as an
"is_index_dirty" function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This change removes all obvious useless if-before-free tests.
E.g., it replaces code like this:
if (some_expression)
free (some_expression);
with the now-equivalent:
free (some_expression);
It is equivalent not just because POSIX has required free(NULL)
to work for a long time, but simply because it has worked for
so long that no reasonable porting target fails the test.
Here's some evidence from nearly 1.5 years ago:
http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html
FYI, the change below was prepared by running the following:
git ls-files -z | xargs -0 \
perl -0x3b -pi -e \
's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s'
Note however, that it doesn't handle brace-enclosed blocks like
"if (x) { free (x); }". But that's ok, since there were none like
that in git sources.
Beware: if you do use the above snippet, note that it can
produce syntactically invalid C code. That happens when the
affected "if"-statement has a matching "else".
E.g., it would transform this
if (x)
free (x);
else
foo ();
into this:
free (x);
else
foo ();
There were none of those here, either.
If you're interested in automating detection of the useless
tests, you might like the useless-if-before-free script in gnulib:
[it *does* detect brace-enclosed free statements, and has a --name=S
option to make it detect free-like functions with different names]
http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free
Addendum:
Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The original "rewrite in C" did somewhat a sloppy job while
stealing code from git-write-tree.
The caller pretends as if the write_tree() function would return
an error code and being able to issue a sensible error message
itself, but write_tree() function just calls die() and never
returns an error. Worse yet, the function claims that it was
running git-write-tree (which is no longer true after
cherry-pick stole it).
Tested-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Especially when using git-cherry-pick, removing files that are unmerged can be
a logical action. This patch merely changes the informative text to be less
confusing.
Signed-off-by: David Symonds <dsymonds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A Porcelain command that uses cherry-pick or revert may make a commit
out of resolved index itself, in which case telling the user to commit
the result is not appropriate at all. This allows GIT_CHERRY_PICK_HELP
environment variable to be set by the calling Porcelain in order to
override the built-in help text.
[jc: this is heavily modified from the original but should be equivalent
in spirit]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When you cherry-pick or revert a commit, naming it with an annotated
tag, we added a comment, attempting to repeat what we got from the end
user, to the message.
But this was inconsistent. When we got "cherry-pick branch", we
recorded the object name (40-letter SHA-1) without saying anything like
"original was 'branch'". There was no need to. Also recent rewrite to
use parse-options made it impossible to parrot the original command line
without "unparsing".
This removes the code that implements the misguided "we dereferenced the
tag so record that in the commit message" behaviour.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I had to scratch my head for quite some time figuring out why we
cannot optimize out write_tree() we do when --no-commit option
is given, whose purpose seem to be only to check if the index is
unmerged, with a simple loop over the active_cache[].
So add a comment to describe why the write_tree() is there, and
resurrect the last scripted version as a reference material in
contrib/example directory with others.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There is no reason to forbid a dirty work tree when reverting or
cherry-picking a change, as long as the index is clean.
The scripted version used to allow it:
case "$no_commit" in
t)
# We do not intend to commit immediately. We just want to
# merge the differences in.
head=$(git-write-tree) ||
die "Your index file is unmerged."
;;
*)
head=$(git-rev-parse --verify HEAD) ||
die "You do not have a valid HEAD"
files=$(git-diff-index --cached --name-only $head) || exit
if [ "$files" ]; then
die "Dirty index: cannot $me (dirty: $files)"
fi
;;
esac
but C rewrite tightened the check, probably by mistake.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A failed cherry-pick (and friend) currently says:
|Automatic cherry-pick failed. After resolving the conflicts,
|mark the corrected paths with 'git-add <paths>'
|and commit the result.
This can obviously be displayed on two lines only.
While at it, change "git-add" to "git add".
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Usually you cannot revert a merge because you do not know which
side of the merge should be considered the mainline (iow, what
change to reverse).
With this patch, cherry-pick and revert learn -m (--mainline)
option that lets you specify the parent number (starting from 1)
of the mainline, so that you can:
git revert -m 1 $merge
to reverse the changes introduced by the $merge commit relative
to its first parent, and:
git cherry-pick -m 2 $merge
to replay the changes introduced by the $merge commit relative
to its second parent.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The parser was inconsistently done, in that it did not look at
the last command line parameter to see if it could be an unknown
option, although it was designed to notice unknown options if
they were given in positions the command expects to find them
(i.e. everything except the last parameter, which ought to be
<commit-ish>). This prevented a very natural invocation
$ git cherry-pick --usage
from issuing the usage help.
Signed-off-by: Junio C Hamano <junkio@cox.net>
We now write to MERGE_MSG, not .msg. I missed this earlier
when I changed the target we write to.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Rather than storing the temporary commit message data in .msg (in
the working tree) we now store the message data in .git/MERGE_MSG.
By storing the message in the .git/ directory we are sure we will
never have a collision with a user file, should a project actually
have a ".msg" file in their top level tree. We also don't need to
worry about leaving this stale file behind during a `reset --hard`
and have it show up in the output of status.
We are using .git/MERGE_MSG here to store the temporary message as
it is an already established convention between git-merge, git-am
and git-rebase that git-commit will default the user's edit buffer
to the contents of .git/MERGE_MSG. If the user is going to need
to resolve this commit or wants to edit the message on their own
prepping that file with the desired message "just works".
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
When converting from the shell script, based on a misreading of the
sed invocation, the builtin included the abbreviated commit name,
and did _not_ include the quotes around the oneline message.
This fixes it.
[jc: with a fix for the typo/thinko spotted by Linus, and also
removing the unwanted abbrev at the beginning.]
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
The new builtin-revert code introduces a few new compiler errors
when I'm building with my stricter set of checks enabled in CFLAGS.
These all just stem from trying to store a constant string into
a non-const char*. Simple fix, make the variables const char*.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Another change by me is removing the va_list variants of run_command,
one of which is used by builtin-revert.c. To avoid compile errors
I'm refactoring builtin-revert to use the char** variant instead,
as that variant is staying.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Somewhere along the line (in abd6970a) git-revert.sh learned to
omit the private object name from the new commit message *unless*
-x was supplied on the command line by the user.
The way this was implemented is really non-obvious in the original
script. Setting replay=t (the default) means we don't include the
the private object name, while setting reply='' (the -x flag) means
we should include the private object name. These two settings now
relate to the replay=1 and replay=0 cases in the C version, so we
need to negate replay to test it is 0.
I also noticed the C version was adding an extra LF in the -x case,
where the older git-revert.sh was not.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
When a cherry-pick failed, we used to recommend setting environment
variables to retain the authorship. It is much easier, though, to use
the "-c" flag of git-commit.
Print this message also when merge-recursive fails (the code used to
exit(1) in that case, never reaching the proper failure path).
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Robin Rosenberg