Commit Graph

1238 Commits

Author SHA1 Message Date
Junio C Hamano
97d0c52980 Merge branch 'ar/commit-cleanup'
* ar/commit-cleanup:
  Allow selection of different cleanup modes for commit messages
  builtin-commit: avoid double-negation in the code.
  builtin-commit: fix amending of the initial commit
  t7005: do not exit inside test.
2007-12-26 17:35:38 -08:00
Arjen Laarhoven
0faf2da7e5 Fix "git log --diff-filter" bug
In commit b7bb760d5e (Fix revision
log diff setup, avoid unnecessary diff generation) an optimization was
made to avoid unnecessary diff generation.  This was partly fixed in
99516e35d0 (Fix embarrassing "git log
--follow" bug).  The '--diff-filter' option also needs the diff machinery
in action.

Signed-off-by: Arjen Laarhoven <arjen@yaph.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-26 11:57:36 -08:00
Shawn O. Pearce
c8deb5a146 Improve error messages when int/long cannot be parsed from config
If a config file has become mildly corrupted due to a missing LF
we may discover some other option joined up against the end of a
numeric value.  For example:

	[section]
	number = 1auto

where the "auto" flag was meant to occur on the next line, below
"number", but the missing LF has caused it to no longer be its
own option.  Instead the word "auto" is parsed as a 'unit factor'
for the value of "number".

Before this change we got the confusing error message:

  fatal: unknown unit: 'auto'

which told us nothing about where the problem appeared.  Now we get:

  fatal: bad config value for 'aninvalid.unit'

which at least points the user in the right direction of where to
search for the incorrectly formatted configuration file.

Noticed by erikh on #git, which received the original error from
a simple `git checkout -b` due to a midly corrupted config.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-26 11:37:45 -08:00
Alex Riesen
5f06573743 Allow selection of different cleanup modes for commit messages
Although we traditionally stripped away excess blank lines, trailing
whitespaces and lines that begin with "#" from the commit log message,
sometimes the message just has to be the way user wants it.

For instance, a commit message template can contain lines that begin with
"#", the message must be kept as close to its original source as possible
if you are converting from a foreign SCM, or maybe the message has a shell
script including its comments for future reference.

The cleanup modes are default, verbatim, whitespace and strip. The
default mode depends on if the message is being edited and will either
strip whitespace and comments (if editor active) or just strip the
whitespace (for where the message is given explicitely).

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-22 19:55:07 -08:00
Junio C Hamano
7263881253 t7005: do not exit inside test.
The way to signal failure is to leave non-zero in $?, not abort
the entire test.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-22 19:45:06 -08:00
Pierre Habouzit
c43a24834a Force the sticked form for options with optional arguments.
This forbids "git tag -n <number> -l" we allowed earlier, so
adjust t7004 while at it.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
2007-12-22 10:26:08 -08:00
Pierre Habouzit
78d776a969 git-tag: fix -l switch handling regression.
The command itself takes an optional <pattern> argument that
limits the shown tags to the ones that match when in listing
mode that is triggered with '-l' option.  The <pattern> is not
an optional option-argument to '-l'.

With this fix, "git tag -l -n 4 v0.99" works as expected.

It also removes a few bogus tests in t7004.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-22 00:05:02 -08:00
Junio C Hamano
885ed372d0 t4024: fix test script to use simpler sed pattern
The earlier test stripped away expected number of 'z' but the output
would have been very hard to read once somebody broke the common tail
optimization.  Instead, count the number of 'z' and show it, to help
diagnosing the problem better in the future.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-20 01:11:37 -08:00
Jeff King
ecaa0cff44 test "git clone -o"
This tests a recently fixed regression in which "git clone
-o" didn't work at all.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-19 14:59:18 -08:00
Johannes Schindelin
34454e858d rebase -p -i: handle "no changes" gracefully
Since commit 376ccb8cbb (rebase -i: style
fixes and minor cleanups), unchanged SHA-1s are no longer mapped via
$REWRITTEN.  But the updating phase was not prepared for the old head
not being rewritten.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-17 20:49:18 -08:00
H.Merijn Brand
3175b0cfc1 the use of 'tr' in the test suite isn't really portable
Some versions of 'tr' only accept octal codes if entered with three digits,
and therefor misinterpret the '\0' in the test suite.

Some versions of 'tr' reject the (needless) use of character classes.

Signed-off-by: H.Merijn Brand <h.m.brand@xs4all.nl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-17 20:49:18 -08:00
Junio C Hamano
079fe1dae8 Re-re-re-fix common tail optimization
We need to be extra careful recovering the removed common section, so
that we do not break context nor the changed incomplete line (i.e. the
last line that does not end with LF).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-16 14:00:30 -08:00
J. Bruce Fields
9afa2d4aa9 whitespace: fix initial-indent checking
After this patch, "written" counts the number of bytes up to and
including the most recently seen tab.  This allows us to detect (and
count) spaces by comparing to "i".

This allows catching initial indents like '\t        ' (a tab followed
by 8 spaces), while previously indent-with-non-tab caught only indents
that consisted entirely of spaces.

This also allows fixing an indent-with-non-tab regression, so we can
again detect indents like '\t \t'.

Also update tests to catch these cases.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-16 13:07:49 -08:00
J. Bruce Fields
4d9697c787 whitespace: fix off-by-one error in non-space-in-indent checking
If there were no tabs, and the last space was at position 7, then
positions 0..7 had spaces, so there were 8 spaces.

Update test to check exactly this case.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-16 13:07:14 -08:00
Petr Baudis
bc8b95ae4a gitweb: Make config_to_multi return [] instead of [undef]
This is important for the list of clone urls, where if there are
no per-repository clone URL configured, the default base URLs
are never used for URL construction without this patch.

Add tests for different ways of setting project URLs, just in case.
Note that those tests in current form wouldn't detect breakage fixed
by this patch, as it only checks for errors and not for expected
output.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-16 11:56:27 -08:00
Junio C Hamano
dfaf75b469 Merge branch 'wc/diff'
* wc/diff:
  Test interaction between diff --check and --exit-code
  Use shorter error messages for whitespace problems
  Add tests for "git diff --check" with core.whitespace options
  Make "diff --check" output match "git apply"
  Unify whitespace checking
  diff --check: minor fixups
  "diff --check" should affect exit status
2007-12-14 21:42:53 -08:00
Wincent Colaiuta
5973a07937 Test interaction between diff --check and --exit-code
Make sure that it works as advertised in the man page.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-14 20:52:26 -08:00
Wincent Colaiuta
420f4f04de Use shorter error messages for whitespace problems
The initial version of the whitespace_error_string() function took the
messages from builtin-apply.c rather than the shorter messages from
diff.c.

This commit addresses Junio's concern that these messages might be too
long (now that we can emit multiple warnings per line).

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-14 20:51:58 -08:00
Junio C Hamano
1eb1e9eea4 commit: allow --amend to reuse message from another commit
After tentatively applying a patch from a contributor, you can get a
replacement patch with corrected code and unusable commit log message.
In such a case, this sequence ought to give you an editor based on the
message in the earlier commit, to let you describe an incremental
improvement:

    git reset --hard HEAD^ ;# discard the earlier one
    git am <corrected-patch
    git commit --amend -c HEAD@{1}

Unfortunately, --amend insisted reusing the message from the commit
being amended, ignoring the -c option.  This corrects it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-14 15:39:54 -08:00
Eric Wong
12a6d752fb git-svn: handle our top-level path being deleted and later re-added
Previously, git-svn would ignore cases where the path we're
tracking is removed from the repository.  This was to prevent
heads with follow-parent from ending up with a tree full of
empty revisions (and thus breaking rename detection).

The previous behavior is fine until the path we're tracking
is re-added later on, leading to the old files being merged
in with the new files in the directory (because the old
files were never marked as deleted)

We will now only remove all the old files locally that were
deleted remotely iff we detect the directory we're in is being
created from scratch.

Thanks for Marcus D. Hanwell for the bug report and
Peter Baumann for the analysis.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-14 12:06:23 -08:00
Wincent Colaiuta
f817546652 Add tests for "git diff --check" with core.whitespace options
Make sure that "git diff --check" does the right thing when the
core.whitespace options are set.

While we are at it, correct many uses of test_expect_failure that
ran sequence of commands.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-13 23:53:20 -08:00
Wincent Colaiuta
c1795bb08a Unify whitespace checking
This commit unifies three separate places where whitespace checking was
performed:

 - the whitespace checking previously done in builtin-apply.c is
extracted into a function in ws.c

 - the equivalent logic in "git diff" is removed

 - the emit_line_with_ws() function is also removed because that also
rechecks the whitespace, and its functionality is rolled into ws.c

The new function is called check_and_emit_line() and it does two things:
checks a line for whitespace errors and optionally emits it. The checking
is based on lines of content rather than patch lines (in other words, the
caller must strip the leading "+" or "-"); this was suggested by Junio on
the mailing list to allow for a future extension to "git show" to display
whitespace errors in blobs.

At the same time we teach it to report all classes of whitespace errors
found for a given line rather than reporting only the first found error.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-13 23:43:58 -08:00
Junio C Hamano
da31b358fb diff --check: minor fixups
There is no reason --exit-code and --check-diff must be mutually
exclusive, so assign different bits to different results and allow them
to be returned from the command.  Introduce diff_result_code() to factor
out the common code to decide final status code based on diffopt
settings and use it everywhere.

Update tests to match the above fix.

Turning pager off when "diff --check" is used is a regression.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-13 23:40:27 -08:00
Wincent Colaiuta
62c64895cf "diff --check" should affect exit status
"git diff" has a --check option that can be used to check for whitespace
problems but it only reported by printing warnings to the
console.

Now when the --check option is used we give a non-zero exit status,
making "git diff --check" nicer to use in scripts and hooks.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-13 23:05:42 -08:00
Junio C Hamano
3e5f260144 Merge branch 'ew/svn-rev-db'
* ew/svn-rev-db:
  git-svn: reinstate old rev_db optimization in new rev_map
  git-svn: replace .rev_db with a more space-efficient .rev_map format
2007-12-12 16:53:06 -08:00
Junio C Hamano
8d08f2d81a disable t9119 for now.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-12 11:53:29 -08:00
Wincent Colaiuta
86f8c23685 Fix "diff --check" whitespace detection
"diff --check" would only detect spaces before tabs if a tab was the
last character in the leading indent. Fix that and add a test case to
make sure the bug doesn't regress in the future.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-12 11:24:33 -08:00
Linus Torvalds
be15f50538 "git tag -u keyname" broken
Commit 3968658599 broke signed tags using
the "-u" flag when it made builtin-tag.c use parse_options() to parse its
arguments (but it quite possibly was broken even before that, by the
builtin rewrite).

It used to be that passing the signing ID with the -u parameter also
(obviously!) implied that you wanted to sign and annotate the tag, but
that logic got dropped. It also totally ignored the actual key ID that was
passed in.

This reinstates it all.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-11 00:38:46 -08:00
Eric Wong
060610c572 git-svn: replace .rev_db with a more space-efficient .rev_map format
Migrations are done automatically on an as-needed basis when new
revisions are to be fetched.  Stale remote branches do not get
migrated, yet.

However, unless you set noMetadata or useSvkProps it's safe to
just do:

  find $GIT_DIR/svn -name '.rev_db*' -print0 | xargs rm -f

to purge all the old .rev_db files.

The new format is a one-way migration and is NOT compatible with
old versions of git-svn.

This is the replacement for the rev_db format, which was too big
and inefficient for large repositories with a lot of sparse history
(mainly tags).

The format is this:

  - 24 bytes for every record,
    * 4 bytes for the integer representing an SVN revision number
    * 20 bytes representing the sha1 of a git commit

  - No empty padding records like the old format

  - new records are written append-only since SVN revision numbers
    increase monotonically

  - lookups on SVN revision number are done via a binary search

  - Piping the file to xxd(1) -c24 is a good way of dumping it for
    viewing or editing, should the need ever arise.

As with .rev_db, these files are disposable unless noMetadata or
useSvmProps is set.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-10 21:28:25 -08:00
Daniel Barkalow
c07c7bf630 Add more checkout tests
If you have local changes that don't conflict with the
branch-switching changes, these should be kept, not cause errors even
without -m, and be reported afterwards in name-status format.

With -m, the changes carried across should be listed as well. And, for
now, include the merge-recursive output from this process.

Also test the detatched head message in at least one case.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-10 11:24:56 -08:00
Wincent Colaiuta
cf7e147cce Style fixes for pre-commit hook tests
As pointed out by Junio on the mailing list, surrounding tests in
double quotes can lead to bugs wherein variables get substituted away,
so this isn't just style churn but important to prevent others from
looking at these tests in the future and thinking that this is "the
way" that Git tests should be written.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-10 00:05:52 -08:00
Wincent Colaiuta
80f86605ba Interactive editor tests for commit-msg hook
Supplement the existing tests for the commit-msg hook (which all use
"git commit -m") with tests which use an interactive editor (no -m
switch) to ensure that all code paths get tested.

At the same time the quoting of some of the existing tests is changed
to conform to Junio's recommendations for test style (single quotes
used around the test unless there is a compelling reason not to, and
the opening quote on the same line as the test_expect and the closing
quote in column 1).

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-10 00:05:52 -08:00
Junio C Hamano
4eb39e9bcc Merge branch 'jc/spht'
* jc/spht:
  Use gitattributes to define per-path whitespace rule
  core.whitespace: documentation updates.
  builtin-apply: teach whitespace_rules
  builtin-apply: rename "whitespace" variables and fix styles
  core.whitespace: add test for diff whitespace error highlighting
  git-diff: complain about >=8 consecutive spaces in initial indent
  War on whitespace: first, a bit of retreat.

Conflicts:

	cache.h
	config.c
	diff.c
2007-12-09 01:23:48 -08:00
Wincent Colaiuta
264474f29a Add tests for pre-commit and commit-msg hooks
As desired, these pass for git-commit.sh, fail for builtin-commit (prior
to the fixes), and succeeded for builtin-commit (after the fixes).

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-09 00:55:55 -08:00
Jeff King
46f721c8fe add status.relativePaths config variable
The output of git-status was recently changed to output relative
paths. Setting this variable to false restores the old behavior for
any old-timers that prefer it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-08 03:33:24 -08:00
Junio C Hamano
a43aa4cec8 Merge branch 'jc/clean-fix'
* jc/clean-fix:
  t7300: add test for clean with wildcard pathspec
  git-clean: Honor pathspec.
2007-12-06 23:43:35 -08:00
Johannes Sixt
c9ecf4f12a for-each-ref: Fix quoting style constants.
for-each-ref can accept only one quoting style. For this reason it uses
OPT_BIT for the quoting style switches so that it is easy to check for
more than one bit being set. However, not all symbolic constants were
actually single bit values. In particular:

    $ git for-each-ref --python
    error: more than one quoting style ?

This fixes it.

While we are here, let's also remove the space before the question mark.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-06 07:53:20 -08:00
Junio C Hamano
cf1b7869f0 Use gitattributes to define per-path whitespace rule
The `core.whitespace` configuration variable allows you to define what
`diff` and `apply` should consider whitespace errors for all paths in
the project (See gitlink:git-config[1]).  This attribute gives you finer
control per path.

For example, if you have these in the .gitattributes:

    frotz   whitespace
    nitfol  -whitespace
    xyzzy   whitespace=-trailing

all types of whitespace problems known to git are noticed in path 'frotz'
(i.e. diff shows them in diff.whitespace color, and apply warns about
them), no whitespace problem is noticed in path 'nitfol', and the
default types of whitespace problems except "trailing whitespace" are
noticed for path 'xyzzy'.  A project with mixed Python and C might want
to have:

    *.c    whitespace
    *.py   whitespace=-indent-with-non-tab

in its toplevel .gitattributes file.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-06 00:45:30 -08:00
Jeff King
d3357ab873 t7300: add test for clean with wildcard pathspec
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-05 22:47:45 -08:00
Junio C Hamano
27ee189163 Merge branch 'maint'
* maint:
  git-am -i: report rewritten title
  git grep shows the same hit repeatedly for unmerged paths
  Do check_repository_format() early (re-fix)
  Do check_repository_format() early
  Add missing inside_work_tree setting in setup_git_directory_gently
2007-12-05 17:49:13 -08:00
Junio C Hamano
9d25acc49a Merge branch 'nd/maint-work-tree-fix' into maint
* nd/maint-work-tree-fix:
  Do check_repository_format() early (re-fix)
  Do check_repository_format() early
  Add missing inside_work_tree setting in setup_git_directory_gently
2007-12-05 15:07:23 -08:00
Nguyễn Thái Ngọc Duy
9459aa77a0 Do check_repository_format() early (re-fix)
This pushes check_repository_format() (actually _gently() version)
to setup_git_directory_gently() in order to prevent from
using unsupported repositories.

New setup_git_directory_gently()'s behaviour is stop searching
for a valid gitdir and return as if there is no gitdir if a
unsupported repository is found. Warning will be thrown in these
cases.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-05 15:06:37 -08:00
Junio C Hamano
c701596199 t5510: add a bit more tests for fetch
"git pull/fetch" that gets explicit refspecs from the command line should
not update configured tracking refs.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-04 21:58:42 -08:00
Junio C Hamano
31cbb5d961 Merge branch 'kh/commit'
* kh/commit: (33 commits)
  git-commit --allow-empty
  git-commit: Allow to amend a merge commit that does not change the tree
  quote_path: fix collapsing of relative paths
  Make git status usage say git status instead of git commit
  Fix --signoff in builtin-commit differently.
  git-commit: clean up die messages
  Do not generate full commit log message if it is not going to be used
  Remove git-status from list of scripts as it is builtin
  Fix off-by-one error when truncating the diff out of the commit message.
  builtin-commit.c: export GIT_INDEX_FILE for launch_editor as well.
  Add a few more tests for git-commit
  builtin-commit: Include the diff in the commit message when verbose.
  builtin-commit: fix partial-commit support
  Fix add_files_to_cache() to take pathspec, not user specified list of files
  Export three helper functions from ls-files
  builtin-commit: run commit-msg hook with correct message file
  builtin-commit: do not color status output shown in the message template
  file_exists(): dangling symlinks do exist
  Replace "runstatus" with "status" in the tests
  t7501-commit: Add test for git commit <file> with dirty index.
  ...
2007-12-04 17:16:33 -08:00
Junio C Hamano
9bbe6db85f Merge branch 'sp/refspec-match'
* sp/refspec-match:
  refactor fetch's ref matching to use refname_match()
  push: use same rules as git-rev-parse to resolve refspecs
  add refname_match()
  push: support pushing HEAD to real branch name
2007-12-04 17:07:10 -08:00
H.Merijn Brand
5188408057 Do not rely on the exit status of "unset" for unset variables
POSIX says that exit status "0" means that "unset" successfully unset
the variable.  However, it is kind of ambiguous if an environment
variable which was not set could be successfully unset.

At least the default shell on HP-UX insists on reporting an error in
such a case, so just ignore the exit status of "unset".

[Dscho: extended the patch to git-submodule.sh, as Junio realized that
 this is the only other place where we check the exit status of "unset".]

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-04 14:48:45 -08:00
Jeff King
dcbcb707c3 t9600: require cvsps 2.1 to perform tests
git-cvsimport won't run at all with less than cvsps 2.1, because it
lacks the -A flag. But there's no point in preventing people who have an
old cvsps from running the full testsuite.

Tested-by: A Large Angry SCM <gitzilla@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-04 14:43:05 -08:00
Johannes Schindelin
ee4bc3715f fast-export: rename the signed tag mode 'ignore' to 'verbatim'
The name 'verbatim' describes much better what this mode does with
signed tags.  While at it, fix the documentation what it actually
does.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-03 23:43:07 -08:00
Junio C Hamano
36863af16e git-commit --allow-empty
It does not usually make sense to record a commit that has the exact
same tree as its sole parent commit and that is why git-commit prevents
you from making such a mistake, but when data from foreign scm is
involved, it is a different story.  We are equipped to represent such an
(perhaps insane, perhaps by mistake, or perhaps done on purpose) empty
change, and it is better to represent it bypassing the safety valve for
native use.

This is primarily for use by foreign scm interface scripts.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-03 00:36:49 -08:00
Johannes Sixt
13aba1e514 git-commit: Allow to amend a merge commit that does not change the tree
Normally, it should not be allowed to generate an empty commit. A merge
commit generated with git 'merge -s ours' does not change the tree (along
the first parent), but merges are not "empty" even if they do not change
the tree. Hence, commit 8588452ceb allowed to amend a merge commit that
does not change the tree, but 4fb5fd5d30 disallowed it again in an
attempt to avoid that an existing commit is amended such that it becomes
empty. With this change, a commit can be edited (create a new one or amend
an existing one) either if there are changes or if there are at least two
parents.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-03 00:25:26 -08:00