whitespace: we cannot "catch all errors known to git" anymore
Traditionally, "*.txt whitespace" in .gitattributes file has been an
instruction to catch _all_ classes of whitespace errors known to git.
This has to change, however, in order to introduce "tab-in-indent" which
is inherently incompatible with "indent-with-non-tab". As we do not want
to break configuration of existing users, add a mechanism to allow marking
selected rules to be excluded from "all rules known to git".
Signed-off-by: Chris Webb <chris@arachsys.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin_diff calls fill_mmfile fairly early, which in turn
calls diff_populate_filespec, which actually retrieves the
file's blob contents into a buffer. Long ago, this was
sensible as we would need to look at the blobs eventually.
These days, however, we may not ever want those blobs if we
end up using a textconv cache, and for large binary files
(exactly the sort for which you might have a textconv
cache), just retrieving the objects can be costly.
This patch just pushes the fill_mmfile call a bit later, so
we can avoid populating the filespec in some cases. There
is one thing to note that looks like a bug but isn't. We
push the fill_mmfile down into the first branch of a
conditional. It seems like we would need it on the other
branch, too, but we don't; fill_textconv does it for us (in
fact, before this, we were just writing over the results of
the fill_mmfile on that branch).
Here's a timing sample on a commit with 45 changed jpgs and
avis. The result is fully textconv cached, but we still
wasted a lot of time just pulling the blobs from storage.
The total size of the blobs (source and dest) is about
180M.
[before]
$ time git show >/dev/null
real 0m0.352s
user 0m0.148s
sys 0m0.200s
[after]
$ time git show >/dev/null
real 0m0.009s
user 0m0.004s
sys 0m0.004s
And that's on a warm cache. On a cold cache, the "after"
case is not much worse, but the "before" case has to do an
extra 180M of I/O.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Running a textconv filter can take a long time. It's
particularly bad for a large file which needs to be spooled
to disk, but even for small files, the fork+exec overhead
can add up for something like "git log -p".
This patch uses the notes-cache mechanism to keep a fast
cache of textconv output. Caches are stored in
refs/notes/textconv/$x, where $x is the userdiff driver
defined in gitattributes.
Caching is enabled only if diff.$x.cachetextconv is true.
In my test repo, on a commit with 45 jpg and avi files
changed and a textconv to show their exif tags:
[before]
$ time git show >/dev/null
real 0m13.724s
user 0m12.057s
sys 0m1.624s
[after, first run]
$ git config diff.mfo.cachetextconv true
$ time git show >/dev/null
real 0m14.252s
user 0m12.197s
sys 0m1.800s
[after, subsequent runs]
$ time git show >/dev/null
real 0m0.352s
user 0m0.148s
sys 0m0.200s
So for a slight (3.8%) cost on the first run, we achieve an
almost 40x speed up on subsequent runs.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Notes provide a fast lookup mechanism for data keyed by
sha1. This is ideal for caching certain operations, like
textconv filters.
This patch builds some infrastructure to make it simpler to
use notes trees as caches. In particular, caches:
1. don't have arbitrary commit messages. They store a
cache validity string in the commit, and clear the tree
when the cache validity string changes.
2. don't keep any commit history. The accumulated history
of a a cache is just useless cruft.
3. use a looser form of locking for ref updates. If two
processes try to write to the cache simultaneously, it
is OK if one overwrites the other, losing some changes.
It's just a cache, so we will just end up with an extra
miss.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Until now, this has been part of the commit-tree builtin.
However, it is already used by other builtins (like commit,
merge, and notes), and it would be useful to access it from
library code.
The check_valid helper has to come along, too, but is given
a more library-ish name of "assert_sha1_type".
Otherwise, the code is unchanged. There are still a few
rough edges for a library function, like printing the utf8
warning to stderr, but we can address those if and when they
come up as inappropriate.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
These should take const buffers as input data, but zlib's
next_in pointer is not const-correct. Let's fix it at the
zlib level, though, so the cast happens in one obvious
place. This should be safe, as a similar cast is used in
zlib's example code for a const array.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Now that Cygwin 1.7.x has enabled lots of new features, and Cygwin 1.5
is no longer actively supported by the Cygwin mailing lists, we might
as well update the defaults to cater to those new features.
NO_TRUSTABLE_FILEMODE is only necessary on FAT drives; the Cygwin
community recommends NTFS drives, but there is still too much use
for FAT to switch the default. Likewise, UNRELIABLE_FSTAT is probably
file-system specific, but worth keeping unchanged.
This commit does not change the default for NO_MMAP, although definitive
proof of whether this option is necessary is lacking.
Signed-off-by: Eric Blake <eblake@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When an HTTP request returns a 401, Git will currently fail with a
confusing message saying that it got a 401, which is not very
descriptive.
Currently if a user wants to use Git over HTTP, they have to use one
URL with the username in the URL (e.g. "http://user@host.com/repo.git")
for write access and another without the username for unauthenticated
read access (unless they want to be prompted for the password each
time). However, since the HTTP servers will return a 401 if an action
requires authentication, we can prompt for username and password if we
see this, allowing us to use a single URL for both purposes.
This patch changes http_request to prompt for the username and password,
then return HTTP_REAUTH so http_get_strbuf can try again. If it gets
a 401 even when a user/pass is supplied, http_request will now return
HTTP_NOAUTH which remote_curl can then use to display a more
intelligent error message that is less confusing.
Signed-off-by: Scott Chacon <schacon@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
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>
Since commit 0fcabdeb52b79775173d009ccc179db104dfbb66, compat/bswap.h
redefined htonl and ntohl to bswap32 not only if bswap32 has been
defined earlier in compat/bswap.h (which is done only on selected
platforms), but also if bswap32 has been defined anywhere else. This
broke Git at least for NetBSD systems running on big-endian machines
(where ntohl and htonl should, of course, be NOOPs), since NetBSD
defines a bswap32 macro in the system headers.
So, we now undefine any previously defined bswap32 in compat/bswap.h
before defining our own.
Signed-off-by: Holger Weiß <holger@zedat.fu-berlin.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
gitweb: git_get_project_config requires only $git_dir, not also $project
Fix overeager early return in git_get_project_config, introduced in 9be3614
(gitweb: Fix project-specific feature override behavior, 2010-03-01). When
git_get_project_config is called from projects list page via
git_get_project_owner($path) etc., it is called with $git_dir defined (in
git_get_project_owner($path) etc.), but $project variable is not defined.
git_get_project_config doesn't use $project variable anyway.
Reported-by: Tobias Heinlein <keytoaster@gentoo.org> Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation: Clarify support for smart HTTP backend
In the description of http.getanyfile, replace the vague "older Git
clients" with the earliest release whose client is able to use the
upload pack service.
Signed-off-by: Greg Bacon <gbacon@dbresearch.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Starting with 5256b00 (Use git_mkstemp_mode instead of plain mkstemp to
create object files, 2010-02-22) utime() is invoked on read-only files.
This is not allowed on Windows and results in many warnings of the form
failed utime() on .git/objects/23/tmp_obj_VlgHlc: Permission denied
during a repack. Fix it by making the file temporarily writable.
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
To make the code simpler, run_textconv lumps all of its
error checking into one conditional. However, the
short-circuit means that an error in reading will prevent us
from calling finish_command, leaving a zombie child.
Clean up properly after errors.
Based-on-work-by: Jeff King <peff@peff.net> Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
refs.c: Write reflogs for notes just like for branch heads
The notes code intends to write reflog entries, but currently they are
not written because log_ref_write() checks for the refname path
explicitly.
Add refs/notes to the list of allowed paths so that notes references are
treated just like branch heads, i.e. according to core.logAllRefUpdates
and core.bare.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Acked-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Test whether the notes code writes reflog entries. It intends to
(setting up the reflog messages) but currently does not.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Acked-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Include the bash completion routines from the contrib/ directory in our core
RPM, in the de facto standard location.
Signed-off-by: Ian Ward Comfort <icomfort@stanford.edu> Acked-by: Ben Walton <bwalton@artsci.utoronto.ca> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 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
Makefile: Remove usage of deprecated Python "has_key" method
"has_key" is a deprecated dictionary method in Python 2.6+.
Simplify the sys.path manipulation for installed scripts by
passing a default value to os.getenv() that takes a default
value to be used when the environment variable is missing.
SCRIPT_PYTHON is currently empty but this future-proofs us.
It also fixes things for users who maintain local git forks
with their own SCRIPT_PYTHON additions.
Old code replaced the first element of sys.path[] which is
typically '' (i.e. import library files relative to the script).
It is safer to prepend the extra library path instead.
Signed-off-by: David Aguilar <davvid@gmail.com> Acked-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The post-rewrite support, in the form of the call to
'record_in_rewritten', was hidden in the arm where we have to record a
new commit for the user. This meant that it was never invoked in the
case where the user has already amended the commit by herself.
[The test is designed to exercise both arms of the 'if' in question.]
Furthermore, recording the stopped-sha (the SHA1 of the commit before
the editing) suffered from a cut&paste error from die_with_patch and
used the wrong variable, hence it never recorded anything.
Noticed by Junio.
Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
t9350: fix careless use of "cd"
difftool: Fix '--gui' when diff.guitool is unconfigured
fast-export: don't segfault when marks file cannot be opened
Upon failure of any of these tests (or when a test that is marked as
expecting a failure is fixed), we will end up running later tests in
random places.
This patch introduces the remove_or_warn function which is a
generalised version of the {unlink,rmdir}_or_warn functions. It takes
an additional parameter indicating the mode of the file to be removed.
The patch also modifies certain functions to use remove_or_warn
where appropriate, and adds a test case for a bug fixed by the use
of remove_or_warn.
Signed-off-by: Peter Collingbourne <peter@pcc.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch implements an rmdir_or_warn function (like unlink_or_warn
but for directories) that uses the generalised warning code in
warn_if_unremovable.
Signed-off-by: Peter Collingbourne <peter@pcc.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
b4479f0 (add -i, send-email, svn, p4, etc: use "git var GIT_EDITOR",
2009-10-30) introduced the use of "git var GIT_EDITOR" to obtain the
preferred editor program, instead of reading environment variables
themselves.
However, "git var GIT_EDITOR" run without a tty (think "cron job") would
give a fatal error "Terminal is dumb, but EDITOR unset". This is not a
problem for add-i, svn, p4 and callers of git_editor() defined in
git-sh-setup, as all of these call it just before launching the editor.
At that point, we know the caller wants to edit.
But send-email ran this near the beginning of the program, even if it is
not going to use any editor (e.g. run without --compose). Fix this by
calling the command only when we edit a file.
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The --summary command line option has been deprecated in favor of --log.
Hide the option from the help message to further discourage the use of
this option.
Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This command uses a custom version of string list when it could
just as easily use the string_list API. Convert it to use string_list
and reduce the code size a bit.
Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sometimes users need to lookup a string in an unsorted string_list. In
that case they should use this function instead of the version for
sorted strings.
Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This command duplicates functionality of the '%s' pretty format.
Simplify the code a bit by using the pretty printing routine
instead of open-coding it here.
Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When FETCH_HEAD contains only 'not-for-merge' entries fmt-merge-msg
still outputs "Merge" (and if the branch isn't master " into <branch>").
In this case fmt-merge-msg is outputting junk and should really just
be quiet. Fix it.
Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jh/maint-submodule-status-in-void:
git submodule summary: Handle HEAD as argument when on an unborn branch
submodule summary: do not fail before the first commit
* tr/notes-display:
git-notes(1): add a section about the meaning of history
notes: track whether notes_trees were changed at all
notes: add shorthand --ref to override GIT_NOTES_REF
commit --amend: copy notes to the new commit
rebase: support automatic notes copying
notes: implement helpers needed for note copying during rewrite
notes: implement 'git notes copy --stdin'
rebase -i: invoke post-rewrite hook
rebase: invoke post-rewrite hook
commit --amend: invoke post-rewrite hook
Documentation: document post-rewrite hook
Support showing notes from more than one notes tree
test-lib: unset GIT_NOTES_REF to stop it from influencing tests
* jl/submodule-diff-dirtiness:
git status: ignoring untracked files must apply to submodules too
git status: Fix false positive "new commits" output for dirty submodules
Refactor dirty submodule detection in diff-lib.c
git status: Show detailed dirty status of submodules in long format
git diff --submodule: Show detailed dirty status of submodules
* pb/log-first-parent-p-m:
show --first-parent/-m: do not default to --cc
show -c: show patch text
revision: introduce setup_revision_opt
t4013: add tests for log -p -m --first-parent
git log -p -m: document -m and honor --first-parent
Merge branch 'jk/maint-add-ignored-dir' into maint
* jk/maint-add-ignored-dir:
tests for "git add ignored-dir/file" without -f
dir: fix COLLECT_IGNORED on excluded prefixes
t0050: mark non-working test as such
Merge branch 'bg/apply-fix-blank-at-eof' into maint
* bg/apply-fix-blank-at-eof:
t3417: Add test cases for "rebase --whitespace=fix"
t4124: Add additional tests of --whitespace=fix
apply: Allow blank context lines to match beyond EOF
apply: Remove the quick rejection test
apply: Don't unnecessarily update line lengths in the preimage
For git-rebase.sh, --no-ff is a synonym for --force-rebase.
For git-rebase--interactive.sh, --no-ff cherry-picks all the commits in
the rebased branch, instead of fast-forwarding over any unchanged commits.
--no-ff offers an alternative way to deal with reverted merges. Instead of
"reverting the revert" you can use "rebase --no-ff" to recreate the branch
with entirely new commits (they're new because at the very least the
committer time is different). This obviates the need to revert the
reversion, as you can re-merge the new topic branch directly. Added an
addendum to revert-a-faulty-merge.txt describing the situation and how to
use --no-ff to handle it.
Signed-off-by: Marc Branchaud <marcnarc@xiplink.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If stdout has already been closed by the CGI and die() gets called,
the CGI will fail to write the "Status: 500 Internal Server Error" to
the pipe, which results in die() being called again (via safe_write).
This goes on in an infinite loop until the stack overflows and the
process is killed by SIGSEGV.
Instead set a flag on the first die() invocation and if we came back to
the handler, just die silently, as it only means we failed to report the
failure---we cannot report anything anyway in such a case. This way
failures to write the error messages to the stdout pipe do not result in
an infinite loop.
We also now report on the death to stderr before we report to stdout,
to increase the chances that the cause of the die() invocation will
appear in the server's error log.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
fixup! http-backend.c: Don't infinite loop
Now die_webcgi() actually can return during a recursive call into it,
causing
http-backend.c:554: error: 'noreturn' function does return
The only reason we would come back to the die handler is because we
failed during it, so we cannot report anything anyway.
rev-list: use default abbrev length when abbrev-commit is in effect
Currently, rev-list has a default of "0" for abbrev which means that
switching on abbreviations with --abbrev-commit has no visible effect,
even though the option is documented.
Set abbrev to DEFAULT_ABBREV so that --abbrev-commit has the same effect
as for log.
Reported-by: Eli Barzilay <eli@barzilay.org> Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
There is a documented limitation on the body of any email not being
able to contain lines starting with "From ". This patch removes that
limitation by improving the parser to search for "From", "Date", and
"Subject" fields in the email before considering it to be an email.
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
Git 1.7.0.3
.mailmap: Map the the first submissions of MJG by e-mail
Documentation/git-clone: Transform description list into item list
Documentation/urls: Remove spurious example markers
Documentation/gitdiffcore: Remove misleading date in heading
Documentation/git-reflog: Fix formatting of command lists
* maint-1.6.6:
Documentation/git-clone: Transform description list into item list
Documentation/urls: Remove spurious example markers
Documentation/gitdiffcore: Remove misleading date in heading
Documentation/git-reflog: Fix formatting of command lists
Documentation/git-clone: Transform description list into item list
so that the list of examples is formatted in the same way as for
git-fetch, and, more importantly, the different identation for the
code blocks in the examples (compared to the immediately preceding code
blocks from url.txt) doesn't look like misformatted, but is clarified by
the items' bullets.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation/urls: Remove spurious example markers
In urls.txt (which is included from git-{clone,fetch,push}.txt)
several item lists are surrounded by example block markers. This is
problematic for two reasons:
- None of these lists are example lists, so they should not be marked as
such semantically.
- The html output looks weird (bulleted list with left sidebar).
Therefore, remove the example block markers. Output by the man backend
is unaffected.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation/gitdiffcore: Remove misleading date in heading
Ever since the automatic conversion into man form, the heading
contained a misidentified subheading reading "June 2005".
Remove this since the documentation is more recent, and the correct
date is in the footer.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
55246aa (Dont use "<unknown>" for placeholders and suppress printing
of empty user formats) introduced a check to prevent empty
user-formats from being printed. This test didn't take empty commit
messages into account, and prevented the line-termination from being
output. This lead to multiple commits on a single line.
Correct it by guarding the check with a check for user-format. A
similar correction for the --graph code-path has been included.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git merge-recursive (and hence git merge) will present conflict hunks
in output something like what ‘diff3 -m’ produces if the
merge.conflictstyle configuration option is set to diff3.
There is a small difference from diff3: diff3 -m includes a label
for the merge base on the ||||||| line.
Tools familiar with the format and humans unfamiliar with the format
both can benefit from such a label. So mark the start of the text
from the merge bases with the heading "||||||| merged common
ancestors".
It would be nicer to use a more informative label. Perhaps someone
will provide one some day.
git rerere does not have trouble parsing the new output, and its
preimage ids are unchanged since it has its own code for re-creating
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>
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>
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>
checkout -m --conflict=diff3: add a label for ancestor
git checkout --merge --conflict=diff3 can be used to present conflict
hunks including text from the common ancestor. The added information
is helpful for resolving a merge by hand, and merge tools tend to
understand it because it is very similar to what ‘diff3 -m’ produces.
Unlike current git, diff3 -m includes a label for the merge base on
the ||||||| line, and unfortunately, some tools cannot parse the
conflict hunks without it. Humans can benefit from a cue when
learning to interpreting the format, too. Mark the start of the text
from the old branch with a label based on the branch’s name.
git rerere does not have trouble parsing this output and its preimage
ids are unchanged since it includes its own code for recreating
conflict hunks. No other code in git tries to parse 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>
merge_trees(): add ancestor label parameter for diff3-style output
Commands using the merge_trees() machinery will present conflict hunks
in output something like what ‘diff3 -m’ produces if the
merge.conflictstyle configuration option is set to diff3. The output
lacks the name of the merge base on the ||||||| line of the output,
and tools can misparse the conflict hunks without it. Add a new
o->ancestor parameter to merge_trees() for use as a label for the
ancestor in conflict hunks.
If o->ancestor is NULL, the output format is as before. All callers
pass NULL for now.
If o->ancestor is non-NULL and both branches renamed the base file
to the same name, that name is included in the conflict hunk labels.
Even if o->ancestor is NULL I think this would be a good change, but
this patch only does it in the non-NULL case to ensure the output
format does not change where it might matter.
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>
The merge_file() function is a helper for ‘git read-tree’, which does
not respect the merge.conflictstyle option, so there is no need to
worry about what ancestor_name it should pass to ll_merge(). Add a
comment to this effect.
Signed-off-by: Jonathan Nieder <jrnieder@mgila.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
checkout --conflict=diff3: add a label for ancestor
git checkout --conflict=diff3 can be used to present conflicts hunks
including text from the common ancestor:
<<<<<<< ours
ourside
|||||||
original
=======
theirside
>>>>>>> theirs
The added information is helpful for resolving a merge by hand, and
merge tools can usually understand it without trouble because it looks
like output from ‘diff3 -m’.
diff3 includes a label for the merge base on the ||||||| line, and it
seems some tools (for example, Emacs 22’s smerge-mode) cannot parse
conflict hunks without such a label. Humans could use help in
interpreting the output, too. So change the marker for the start of the
text from the common ancestor to include the label “base”.
git rerere’s conflict identifiers are not affected: to parse conflict
hunks, rerere looks for whitespace after the ||||||| marker rather
than a newline, and to compute preimage ids, rerere has its own code
for creating conflict hunks. No other code in git tries to parse
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>
ll_merge(): add ancestor label parameter for diff3-style output
Commands using the ll_merge() function will present conflict hunks
imitating ‘diff3 -m’ output if the merge.conflictstyle configuration
option is set appropriately. Unlike ‘diff3 -m’, the output does not
include a label for the merge base on the ||||||| line of the output,
and some tools misparse the conflict hunks without that.
Add a new ancestor_label parameter to ll_merge() to give callers the
power to rectify this situation. If ancestor_label is NULL, the output
format is unchanged. All callers pass NULL for now.
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>
git merge-file --diff3 can be used to present conflicts hunks
including text from the common ancestor.
The added information is helpful for resolving a merge by hand, and
merge tools can usually grok it because it looks like output from
diff3 -m. However, ‘diff3’ includes a label for the merge base on the
||||||| line and some tools cannot parse conflict hunks without such a
label. Write the base-name as passed in a -L option (or the name of
the ancestor file by default) on that line.
git rerere will not have trouble parsing this output, since instead of
looking for a newline, it looks for whitespace after the |||||||
marker. Since rerere includes its own code for recreating conflict
hunks, conflict identifiers are unaffected. No other code in git tries
to parse 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>
xdl_merge(): move file1 and file2 labels to xmparam structure
The labels for the three participants in a potential conflict are all
optional arguments for the xdiff merge routine; if they are NULL, then
xdl_merge() can cope by omitting the labels from its output. Move
them to the xmparam structure to allow new callers to save some
keystrokes where they are not needed.
This also has the virtue of making the xdiff merge interface more
similar to merge_trees, which might make it easier to learn.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
xdl_merge(): add optional ancestor label to diff3-style output
The ‘git checkout --conflict=diff3’ command can be used to
present conflicts hunks including text from the common ancestor:
<<<<<<< ours
ourside
|||||||
original
=======
theirside
>>>>>>> theirs
The added information is helpful for resolving merges by hand, and
merge tools can usually grok it because it is very similar to the
output from diff3 -m.
A subtle change can help more tools to understand the output. ‘diff3’
includes the name of the merge base on the ||||||| line of the output,
and some tools misparse the conflict hunks without it. Add a new
xmp->ancestor parameter to xdl_merge() for use with conflict style
XDL_MERGE_DIFF3 as a label on the ||||||| line for any conflict hunks.
If xmp->ancestor is NULL, the output format is unchanged. Thus, this
change only provides unexposed plumbing for the new feature; it does
not affect the outward behavior of git.
Requested-by: Stefan Monnier <monnier@iro.umontreal.ca> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by: Bert Wesarg <Bert.Wesarg@googlemail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>