Commit Graph

550 Commits

Author SHA1 Message Date
Johannes Schindelin
4e218f54b3 Smudge the files fed to external diff and textconv
When preparing temporary files for an external diff or textconv, it is
easier on the external tools, especially when they are implemented using
platform tools, if they are fed the input after convert_to_working_tree().

This fixes msysGit issue 177.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-22 15:03:59 -07:00
Junio C Hamano
aec813062b Merge branch 'jc/maint-1.6.0-keep-pack'
* jc/maint-1.6.0-keep-pack:
  is_kept_pack(): final clean-up
  Simplify is_kept_pack()
  Consolidate ignore_packed logic more
  has_sha1_kept_pack(): take "struct rev_info"
  has_sha1_pack(): refactor "pretend these packs do not exist" interface
  git-repack: resist stray environment variable
2009-03-11 13:49:56 -07:00
Benjamin Kramer
eb3a9dd327 Remove unused function scope local variables
These variables were unused and can be removed safely:

  builtin-clone.c::cmd_clone(): use_local_hardlinks, use_separate_remote
  builtin-fetch-pack.c::find_common(): len
  builtin-remote.c::mv(): symref
  diff.c::show_stats():show_stats(): total
  diffcore-break.c::should_break(): base_size
  fast-import.c::validate_raw_date(): date, sign
  fsck.c::fsck_tree(): o_sha1, sha1
  xdiff-interface.c::parse_num(): read_some

Signed-off-by: Benjamin Kramer <benny.kra@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-07 20:52:17 -08:00
Junio C Hamano
4a2caf6912 Merge branch 'al/ansi-color'
* al/ansi-color:
  builtin-branch.c: Rename branch category color names
  Clean up use of ANSI color sequences
2009-03-05 15:41:19 -08:00
Keith Cascio
628d5c2b70 Use DIFF_XDL_SET/DIFF_OPT_SET instead of raw bit-masking
Signed-off-by: Keith Cascio <keith@cs.ucla.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-04 00:56:51 -08:00
Junio C Hamano
cd673c1f17 has_sha1_pack(): refactor "pretend these packs do not exist" interface
Most of the callers of this function except only one pass NULL to its last
parameter, ignore_packed.

Introduce has_sha1_kept_pack() function that has the function signature
and the semantics of this function, and convert the sole caller that does
not pass NULL to call this new function.

All other callers and has_sha1_pack() lose the ignore_packed parameter.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-28 01:06:06 -08:00
Keith Cascio
4b15b4ab5f Remove redundant bit clears from diff_setup()
All bits already clear after memset(0).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-13 18:19:37 -08:00
Arjen Laarhoven
dc6ebd4cc5 Clean up use of ANSI color sequences
Remove the literal ANSI escape sequences and replace them by readable
constants.

Signed-off-by: Arjen Laarhoven <arjen@yaph.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-13 17:27:58 -08:00
Nazri Ramliy
a8344abe0f Bugfix: GIT_EXTERNAL_DIFF with more than one changed files
When there is more than one file that are changed, running git diff with
GIT_EXTERNAL_DIFF incorrectly diagnoses an programming error and dies.
The check introduced in 479b0ae (diff: refactor tempfile cleanup handling,
2009-01-22) to detect a temporary file slot that forgot to remove its
temporary file was inconsistent with the way the codepath to remove the
temporary to mark the slot that it is done with it.

This patch fixes this problem and adds a test case for it.

Signed-off-by: Nazri Ramliy <ayiehere@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-12 12:31:52 -08:00
Junio C Hamano
bdf6442b48 Merge branch 'jc/maint-split-diff-metainfo'
* jc/maint-split-diff-metainfo:
  diff.c: output correct index lines for a split diff
2009-01-31 18:07:42 -08:00
Junio C Hamano
fa5bc8abb3 Merge branch 'jk/signal-cleanup'
* jk/signal-cleanup:
  t0005: use SIGTERM for sigchain test
  pager: do wait_for_pager on signal death
  refactor signal handling for cleanup functions
  chain kill signals for cleanup functions
  diff: refactor tempfile cleanup handling
  Windows: Fix signal numbers
2009-01-31 17:43:56 -08:00
Junio C Hamano
90b23e5f21 Merge branch 'jc/maint-1.6.0-split-diff-metainfo' into jc/maint-split-diff-metainfo
This is an evil merge, as a test added since 1.6.0 expects an incorrect
behaviour the merged commit fixes.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-27 01:08:02 -08:00
Junio C Hamano
b67b9612e1 diff.c: output correct index lines for a split diff
A patch that changes the filetype (e.g. regular file to symlink) of a path
must be split into a deletion event followed by a creation event, which
means that we need to have two independent metainfo lines for each.
However, the code reused the single set of metainfo lines.

As the blob object names recorded on the index lines are usually not used
nor validated on the receiving end, this is not an issue with normal use
of the resulting patch.  However, when accepting a binary patch to delete
a blob, git-apply verified that the postimage blob object name on the
index line is 0{40}, hence a patch that deletes a regular file blob that
records binary contents to create a blob with different filetype (e.g. a
symbolic link) failed to apply.  "git am -3" also uses the blob object
names recorded on the index line, so it would also misbehave when
synthesizing a preimage tree.

This moves the code to generate metainfo lines around, so that two
independent sets of metainfo lines are used for the split halves.

Additional tests by Jeff King.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-27 00:48:00 -08:00
Junio C Hamano
9847a52432 Merge branch 'js/diff-color-words'
* js/diff-color-words:
  Change the spelling of "wordregex".
  color-words: Support diff.wordregex config option
  color-words: make regex configurable via attributes
  color-words: expand docs with precise semantics
  color-words: enable REG_NEWLINE to help user
  color-words: take an optional regular expression describing words
  color-words: change algorithm to allow for 0-character word boundaries
  color-words: refactor word splitting and use ALLOC_GROW()
  Add color_fwrite_lines(), a function coloring each line individually
2009-01-25 17:13:29 -08:00
Junio C Hamano
5dc1308562 Merge branch 'js/patience-diff'
* js/patience-diff:
  bash completions: Add the --patience option
  Introduce the diff option '--patience'
  Implement the patience diff algorithm

Conflicts:
	contrib/completion/git-completion.bash
2009-01-23 21:51:38 -08:00
Jeff King
57b235a4bc refactor signal handling for cleanup functions
The current code is very inconsistent about which signals
are caught for doing cleanup of temporary files and lock
files. Some callsites checked only SIGINT, while others
checked a variety of death-dealing signals.

This patch factors out those signals to a single function,
and then calls it everywhere. For some sites, that means
this is a simple clean up. For others, it is an improvement
in that they will now properly clean themselves up after a
larger variety of signals.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-21 22:46:53 -08:00
Jeff King
4a16d07272 chain kill signals for cleanup functions
If a piece of code wanted to do some cleanup before exiting
(e.g., cleaning up a lockfile or a tempfile), our usual
strategy was to install a signal handler that did something
like this:

  do_cleanup(); /* actual work */
  signal(signo, SIG_DFL); /* restore previous behavior */
  raise(signo); /* deliver signal, killing ourselves */

For a single handler, this works fine. However, if we want
to clean up two _different_ things, we run into a problem.
The most recently installed handler will run, but when it
removes itself as a handler, it doesn't put back the first
handler.

This patch introduces sigchain, a tiny library for handling
a stack of signal handlers. You sigchain_push each handler,
and use sigchain_pop to restore whoever was before you in
the stack.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-21 22:46:52 -08:00
Jeff King
479b0ae81c diff: refactor tempfile cleanup handling
There are two pieces of code that create tempfiles for diff:
run_external_diff and run_textconv. The former cleans up its
tempfiles in the face of premature death (i.e., by die() or
by signal), but the latter does not. After this patch, they
will both use the same cleanup routines.

To make clear what the change is, let me first explain what
happens now:

  - run_external_diff uses a static global array of 2
    diff_tempfile structs (since it knows it will always
    need exactly 2 tempfiles). It calls prepare_temp_file
    (which doesn't know anything about the global array) on
    each of the structs, creating the tempfiles that need to
    be cleaned up. It then registers atexit and signal
    handlers to look through the global array and remove the
    tempfiles. If it succeeds, it calls the handler manually
    (which marks the tempfile structs as unused).

  - textconv has its own tempfile struct, which it allocates
    using prepare_temp_file and cleans up manually. No
    signal or atexit handlers.

The new code moves the installation of cleanup handlers into
the prepare_temp_file function. Which means that that
function now has to understand that there is static tempfile
storage. So what happens now is:

  - run_external_diff calls prepare_temp_file
  - prepare_temp_file calls claim_diff_tempfile, which
    allocates an unused slot from our global array
  - prepare_temp_file installs (if they have not already
    been installed) atexit and signal handlers for cleanup
  - prepare_temp_file sets up the tempfile as usual
  - prepare_temp_file returns a pointer to the allocated
    tempfile

The advantage being that run_external_diff no longer has to
care about setting up cleanup handlers. Now by virtue of
calling prepare_temp_file, run_textconv gets the same
benefit, as will any future users of prepare_temp_file.

There are also a few side benefits to the specific
implementation:

  - we now install cleanup handlers _before_ allocating the
    tempfile, closing a race which could leave temp cruft

  - when allocating a slot in the global array, we will now
    detect a situation where the old slots were not properly
    vacated (i.e., somebody forgot to call remove upon
    leaving the function). In the old code, such a situation
    would silently overwrite the tempfile names, meaning we
    would forget to clean them up. The new code dies with a
    bug warning.

  - we make sure only to install the signal handler once.
    This isn't a big deal, since we are just overwriting the
    old handler, but will become an issue when a later patch
    converts the code to use sigchain

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-21 22:46:52 -08:00
Junio C Hamano
f873dd5ac2 Merge branch 'maint'
* maint:
  Rename diff.suppress-blank-empty to diff.suppressBlankEmpty
2009-01-21 01:08:10 -08:00
Boyd Stephen Smith Jr
98a4d87b87 color-words: Support diff.wordregex config option
When diff is invoked with --color-words (w/o =regex), use the regular
expression the user has configured as diff.wordregex.

diff drivers configured via attributes take precedence over the
diff.wordregex-words setting.  If the user wants to change them, they have
their own configuration variables.

Signed-off-by: Boyd Stephen Smith Jr <bss@iguanasuicide.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-21 00:51:12 -08:00
Johannes Schindelin
950db8798d Rename diff.suppress-blank-empty to diff.suppressBlankEmpty
All the other config variables use CamelCase.  This config variable should
not be an exception.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-21 00:17:40 -08:00
Thomas Rast
80c49c3de2 color-words: make regex configurable via attributes
Make the --color-words splitting regular expression configurable via
the diff driver's 'wordregex' attribute.  The user can then set the
driver on a file in .gitattributes.  If a regex is given on the
command line, it overrides the driver's setting.

We also provide built-in regexes for the languages that already had
funcname patterns, and add an appropriate diff driver entry for C/++.
(The patterns are designed to run UTF-8 sequences into a single chunk
to make sure they remain readable.)

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17 10:44:21 -08:00
Thomas Rast
bf82940dbf color-words: enable REG_NEWLINE to help user
We silently truncate a match at the newline, which may lead to
unexpected behaviour, e.g., when matching "<[^>]*>" against

  <foo
  bar>

since then "<foo" becomes a word (and "bar>" doesn't!) even though the
regex said only angle-bracket-delimited things can be words.

To alleviate the problem slightly, use REG_NEWLINE so that negated
classes can't match a newline.  Of course newlines can still be
matched explicitly.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17 10:43:24 -08:00
Johannes Schindelin
2b6a5417d7 color-words: take an optional regular expression describing words
In some applications, words are not delimited by white space.  To
allow for that, you can specify a regular expression describing
what makes a word with

	git diff --color-words='[A-Za-z0-9]+'

Note that words cannot contain newline characters.

As suggested by Thomas Rast, the words are the exact matches of the
regular expression.

Note that a regular expression beginning with a '^' will match only
a word at the beginning of the hunk, not a word at the beginning of
a line, and is probably not what you want.

This commit contains a quoting fix by Thomas Rast.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17 10:43:08 -08:00
Johannes Schindelin
2e5d2003b2 color-words: change algorithm to allow for 0-character word boundaries
Up until now, the color-words code assumed that word boundaries are
identical to white space characters.

Therefore, it could get away with a very simple scheme: it copied the
hunks, substituted newlines for each white space character, called
libxdiff with the processed text, and then identified the text to
output by the offsets (which agreed since the original text had the
same length).

This code was ugly, for a number of reasons:

- it was impossible to introduce 0-character word boundaries,

- we had to print everything word by word, and

- the code needed extra special handling of newlines in the removed part.

Fix all of these issues by processing the text such that

- we build word lists, separated by newlines,

- we remember the original offsets for every word, and

- after calling libxdiff on the wordlists, we parse the hunk headers, and
  find the corresponding offsets, and then

- we print the removed/added parts in one go.

The pre and post samples in the test were provided by Santi Béjar.

Note that there is some strange special handling of hunk headers where
one line range is 0 due to POSIX: in this case, the start is one too
low.  In other words a hunk header '@@ -1,0 +2 @@' actually means that
the line must be added after the _second_ line of the pre text, _not_
the first.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17 10:42:41 -08:00
Johannes Schindelin
23c1575f74 color-words: refactor word splitting and use ALLOC_GROW()
Word splitting is now performed by the function diff_words_fill(),
avoiding having the same code twice.

In the same spirit, avoid duplicating the code of ALLOC_GROW().

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17 10:42:19 -08:00
Johannes Schindelin
34292bddb8 Introduce the diff option '--patience'
This commit teaches Git to produce diff output using the patience diff
algorithm with the diff option '--patience'.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-07 13:37:07 -08:00
Junio C Hamano
7bb5321be0 Merge branch 'rs/diff-ihc'
* rs/diff-ihc:
  diff: add option to show context between close hunks

Conflicts:
	Documentation/diff-options.txt
2009-01-07 00:10:14 -08:00
Alexander Potashev
d75307084d remove trailing LF in die() messages
LF at the end of format strings given to die() is redundant because
die already adds one on its own.

Signed-off-by: Alexander Potashev <aspotashev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-05 13:01:01 -08:00
René Scharfe
6d0e674a57 diff: add option to show context between close hunks
Merge two hunks if there is only the specified number of otherwise unshown
context between them.  For --inter-hunk-context=1, the resulting patch has
the same number of lines but shows uninterrupted context instead of a
context header line in between.

Patches generated with this option are easier to read but are also more
likely to conflict if the file to be patched contains other changes.

This patch keeps the default for this option at 0.  It is intended to just
make the feature available in order to see its advantages and downsides.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-29 01:05:21 -08:00
René Scharfe
0956a6db7a Fix type-mismatch compiler warning from diff_populate_filespec()
The type of the size member of filespec is ulong, while strbuf_detach expects
a size_t pointer.  This patch should fix the warning:

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-18 09:58:40 -08:00
Linus Torvalds
dfab6aaecf Make 'prepare_temp_file()' ignore st_size for symlinks
The code was already set up to not really need it, so this just massages
it a bit to remove the use entirely.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-17 13:36:34 -08:00
Linus Torvalds
cf219d8c68 Make 'diff_populate_filespec()' use the new 'strbuf_readlink()'
This makes all tests pass on a system where 'lstat()' has been hacked to
return bogus data in st_size for symlinks.

Of course, the test coverage isn't complete, but it's a good baseline.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-17 13:36:34 -08:00
Jeff King
3aa1f7ca37 diff: respect textconv in rewrite diffs
Currently we just skip rewrite diffs for binary files; this
patch makes an exception for files which will be textconv'd,
and actually performs the textconv before generating the
diff.

Conceptually, rewrite diffs should be in the exact same
format as the a non-rewrite diff, except that we refuse to
share any context. Thus it makes very little sense for "git
diff" to show a textconv'd diff, but for "git diff -B" to
show "Binary files differ".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-09 22:28:55 -08:00
Jeff King
0c01857df5 diff: fix handling of binary rewrite diffs
The current emit_rewrite_diff code always writes a text patch without
checking whether the content is binary. This means that if you end up with
a rewrite diff for a binary file, you get lots of raw binary goo in your
patch.

Instead, if we have binary files, then let's just skip emit_rewrite_diff
altogether. We will already have shown the "dissimilarity index" line, so
it is really about the diff contents. If binary diffs are turned off, the
"Binary files a/file and b/file differ" message should be the same in
either case. If we do have binary patches turned on, there isn't much
point in making a less-efficient binary patch that does a total rewrite;
no human is going to read it, and since binary patches don't apply with
any fuzz anyway, the result of application should be the same.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-09 22:14:25 -08:00
Jeff King
e10ea8126c diff: allow turning on textconv explicitly for plumbing
Some history viewers use the diff plumbing to generate diffs
rather than going through the "git diff" porcelain.
Currently, there is no way for them to specify that they
would like to see the text-converted version of the diff.

This patch adds a "--textconv" option to allow such a
plumbing user to allow text conversion.  The user can then
tell the viewer whether or not they would like text
conversion enabled.

While it may be tempting add a configuration option rather
than requiring each plumbing user to be configured to pass
--textconv, that is somewhat dangerous. Text-converted diffs
generally cannot be applied directly, so each plumbing user
should "opt in" to generating such a diff, either by
explicit request of the user or by confirming that their
output will not be fed to patch.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-07 19:59:32 -08:00
Junio C Hamano
72b6157aa8 Merge branch 'jk/diff-convfilter'
* jk/diff-convfilter:
  enable textconv for diff in verbose status/commit
  wt-status: load diff ui config
  only textconv regular files
  userdiff: require explicitly allowing textconv
  refactor userdiff textconv code

Conflicts:
	t/t4030-diff-textconv.sh
2008-11-12 21:50:58 -08:00
Junio C Hamano
459d60084f Merge branch 'jk/diff-convfilter-test-fix'
* jk/diff-convfilter-test-fix:
  Avoid using non-portable `echo -n` in tests.
  add userdiff textconv tests
  document the diff driver textconv feature
  diff: add missing static declaration

Conflicts:
	Documentation/gitattributes.txt
2008-11-12 21:50:41 -08:00
Junio C Hamano
1e2bba92d2 Merge branch 'rs/blame'
* rs/blame:
  blame: use xdi_diff_hunks(), get rid of struct patch
  add xdi_diff_hunks() for callers that only need hunk lengths
  Allow alternate "low-level" emit function from xdl_diff
  Always initialize xpparam_t to 0
  blame: inline get_patch()
2008-11-08 16:05:39 -08:00
Jeff King
2675773af8 only textconv regular files
We treat symlinks as text containing the results of the
symlink, so it doesn't make much sense to text-convert them.

Similarly gitlink components just end up as the text
"Subproject commit $sha1", which we should leave intact.

Note that a typechange may be broken into two parts: the
removal of the old part and the addition of the new. In that
case, we _do_ show the textconv for any part which is the
addition or removal of a file we would ordinarily textconv,
since it is purely acting on the file contents.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:09:48 -07:00
Jeff King
c7534ef4a1 userdiff: require explicitly allowing textconv
Diffs that have been produced with textconv almost certainly
cannot be applied, so we want to be careful not to generate
them in things like format-patch.

This introduces a new diff options, ALLOW_TEXTCONV, which
controls this behavior. It is off by default, but is
explicitly turned on for the "log" family of commands, as
well as the "diff" porcelain (but not diff-* plumbing).

Because both text conversion and external diffing are
controlled by these diff options, we can get rid of the
"plumbing versus porcelain" distinction when reading the
config. This was an attempt to control the same thing, but
suffered from being too coarse-grained.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:09:48 -07:00
Jeff King
04427ac848 refactor userdiff textconv code
The original implementation of textconv put the conversion
into fill_mmfile. This was a bad idea for a number of
reasons:

 - it made the semantics of fill_mmfile unclear. In some
   cases, it was allocating data (if a text conversion
   occurred), and in some cases not (if we could use the
   data directly from the filespec). But the caller had
   no idea which had happened, and so didn't know whether
   the memory should be freed

 - similarly, the caller had no idea if a text conversion
   had occurred, and so didn't know whether the contents
   should be treated as binary or not. This meant that we
   incorrectly guessed that text-converted content was
   binary and didn't actually show it (unless the user
   overrode us with "diff.foo.binary = false", which then
   created problems in plumbing where the text conversion
   did _not_ occur)

 - not all callers of fill_mmfile want the text contents. In
   particular, we don't really want diffstat, whitespace
   checks, patch id generation, etc, to look at the
   converted contents.

This patch pulls the conversion code directly into
builtin_diff, so that we only see the conversion when
generating an actual patch. We also then know whether we are
doing a conversion, so we can check the binary-ness and free
the data from the mmfile appropriately (the previous version
leaked quite badly when text conversion was used)

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:09:48 -07:00
Jeff King
72cf484140 diff: add missing static declaration
This function isn't used outside of diff.c; the 'static' was
simply overlooked in the original writing.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:09:47 -07:00
Brian Downing
9ccd0a88ac Always initialize xpparam_t to 0
We're going to be adding some parameters to this, so we can't have
any uninitialized data in it.

Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-25 12:09:31 -07:00
Jeff King
9cb92c390c diff: add filter for converting binary to text
When diffing binary files, it is sometimes nice to see the
differences of a canonical text form rather than either a
binary patch or simply "binary files differ."

Until now, the only option for doing this was to define an
external diff command to perform the diff. This was a lot of
work, since the external command needed to take care of
doing the diff itself (including mode changes), and lost the
benefit of git's colorization and other options.

This patch adds a text conversion option, which converts a
file to its canonical format before performing the diff.
This is less flexible than an arbitrary external diff, but
is much less work to set up. For example:

  $ echo '*.jpg diff=exif' >>.gitattributes
  $ git config diff.exif.textconv exiftool
  $ git config diff.exif.binary false

allows one to see jpg diffs represented by the text output
of exiftool.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-18 08:02:55 -07:00
Jeff King
122aa6f9c0 diff: introduce diff.<driver>.binary
The "diff" gitattribute is somewhat overloaded right now. It
can say one of three things:

  1. this file is definitely binary, or definitely not
     (i.e., diff or !diff)
  2. this file should use an external diff engine (i.e.,
     diff=foo, diff.foo.command = custom-script)
  3. this file should use particular funcname patterns
     (i.e., diff=foo, diff.foo.(x?)funcname = some-regex)

Most of the time, there is no conflict between these uses,
since using one implies that the other is irrelevant (e.g.,
an external diff engine will decide for itself whether the
file is binary).

However, there is at least one conflicting situation: there
is no way to say "use the regular rules to determine whether
this file is binary, but if we do diff it textually, use
this funcname pattern." That is, currently setting diff=foo
indicates that the file is definitely text.

This patch introduces a "binary" config option for a diff
driver, so that one can explicitly set diff.foo.binary. We
default this value to "don't know". That is, setting a diff
attribute to "foo" and using "diff.foo.funcname" will have
no effect on the binaryness of a file. To get the current
behavior, one can set diff.foo.binary to true.

This patch also has one additional advantage: it cleans up
the interface to the userdiff code a bit. Before, calling
code had to know more about whether attributes were false,
true, or unset to determine binaryness. Now that binaryness
is a property of a driver, we can represent these situations
just by passing back a driver struct.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-18 08:02:26 -07:00
Jeff King
be58e70dba diff: unify external diff and funcname parsing code
Both sets of code assume that one specifies a diff profile
as a gitattribute via the "diff=foo" attribute. They then
pull information about that profile from the config as
diff.foo.*.

The code for each is currently completely separate from the
other, which has several disadvantages:

  - there is duplication as we maintain code to create and
    search the separate lists of external drivers and
    funcname patterns

  - it is difficult to add new profile options, since it is
    unclear where they should go

  - the code is difficult to follow, as we rely on the
    "check if this file is binary" code to find the funcname
    pattern as a side effect. This is the first step in
    refactoring the binary-checking code.

This patch factors out these diff profiles into "userdiff"
drivers. A file with "diff=foo" uses the "foo" driver, which
is specified by a single struct.

Note that one major difference between the two pieces of
code is that the funcname patterns are always loaded,
whereas external drivers are loaded only for the "git diff"
porcelain; the new code takes care to retain that situation.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-18 08:02:21 -07:00
Brandon Casey
f285a2d7ed Replace calls to strbuf_init(&foo, 0) with STRBUF_INIT initializer
Many call sites use strbuf_init(&foo, 0) to initialize local
strbuf variable "foo" which has not been accessed since its
declaration. These can be replaced with a static initialization
using the STRBUF_INIT macro which is just as readable, saves a
function call, and takes up fewer lines.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-12 12:36:19 -07:00
Jonathan del Strother
5d1e958e24 Teach git diff about Objective-C syntax
Add support for recognition of Objective-C class & instance methods,
C functions, and class implementation/interfaces.

Signed-off-by: Jonathan del Strother <jon.delStrother@bestbefore.tv>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-06 09:02:47 -07:00
Shawn O. Pearce
276328ffb8 Merge branch 'maint'
* maint:
  Update release notes for 1.6.0.3
  Teach rebase -i to honor pre-rebase hook
  docs: describe pre-rebase hook
  do not segfault if make_cache_entry failed
  make prefix_path() never return NULL
  fix bogus "diff --git" header from "diff --no-index"
  Fix fetch/clone --quiet when stdout is connected
  builtin-blame: Fix blame -C -C with submodules.
  bash: remove fetch, push, pull dashed form leftovers

Conflicts:
	diff.c
2008-10-06 08:56:07 -07:00
Linus Torvalds
71b989e7dd fix bogus "diff --git" header from "diff --no-index"
When "git diff --no-index" is given an absolute pathname, it
would generate a diff header with the absolute path
prepended by the prefix, like:

  diff --git a/dev/null b/foo

Not only is this nonsensical, and not only does it violate
the description of diffs given in git-diff(1), but it would
produce broken binary diffs. Unlike text diffs, the binary
diffs don't contain the filenames anywhere else, and so "git
apply" relies on this header to figure out the filename.

This patch just refuses to use an invalid name for anything
visible in the diff.

Now, this fixes the "git diff --no-index --binary a
/dev/null" kind of case (and we'll end up using "a" as the
basename), but some other insane cases are impossible to
handle. If you do

	git diff --no-index --binary a /bin/echo

you'll still get a patch like

	diff --git a/a b/bin/echo
	old mode 100644
	new mode 100755
	index ...

and "git apply" will refuse to apply it for a couple of
reasons, and the diff is simply bogus.

And that, btw, is no longer a bug, I think. It's impossible
to know whethe the user meant for the patch to be a rename
or not. And as such, refusing to apply it because you don't
know what name you should use is probably _exactly_ the
right thing to do!

Original problem reported by Imre Deak. Test script and problem
description by Jeff King.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-06 00:29:28 -07:00
Nicolas Pitre
9126f0091f fix openssl headers conflicting with custom SHA1 implementations
On ARM I have the following compilation errors:

    CC fast-import.o
In file included from cache.h:8,
                 from builtin.h:6,
                 from fast-import.c:142:
arm/sha1.h:14: error: conflicting types for 'SHA_CTX'
/usr/include/openssl/sha.h:105: error: previous declaration of 'SHA_CTX' was here
arm/sha1.h:16: error: conflicting types for 'SHA1_Init'
/usr/include/openssl/sha.h:115: error: previous declaration of 'SHA1_Init' was here
arm/sha1.h:17: error: conflicting types for 'SHA1_Update'
/usr/include/openssl/sha.h:116: error: previous declaration of 'SHA1_Update' was here
arm/sha1.h:18: error: conflicting types for 'SHA1_Final'
/usr/include/openssl/sha.h:117: error: previous declaration of 'SHA1_Final' was here
make: *** [fast-import.o] Error 1

This is because openssl header files are always included in
git-compat-util.h since commit 684ec6c63c whenever NO_OPENSSL is not
set, which somehow brings in <openssl/sha1.h> clashing with the custom
ARM version.  Compilation of git is probably broken on PPC too for the
same reason.

Turns out that the only file requiring openssl/ssl.h and openssl/err.h
is imap-send.c.  But only moving those problematic includes there
doesn't solve the issue as it also includes cache.h which brings in the
conflicting local SHA1 header file.

As suggested by Jeff King, the best solution is to rename our references
to SHA1 functions and structure to something git specific, and define those
according to the implementation used.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-02 18:06:56 -07:00
Brandon Casey
416f80a60b diff.c: remove duplicate bibtex pattern introduced by merge 92bb9785
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-09-30 13:49:07 -07:00
Shawn O. Pearce
9800c0df41 Merge branch 'bc/master-diff-hunk-header-fix'
* bc/master-diff-hunk-header-fix:
  Clarify commit error message for unmerged files
  Use strchrnul() instead of strchr() plus manual workaround
  Use remove_path from dir.c instead of own implementation
  Add remove_path: a function to remove as much as possible of a path
  git-submodule: Fix "Unable to checkout" for the initial 'update'
  Clarify how the user can satisfy stash's 'dirty state' check.
  t4018-diff-funcname: test syntax of builtin xfuncname patterns
  t4018-diff-funcname: test syntax of builtin xfuncname patterns
  make "git remote" report multiple URLs
  diff hunk pattern: fix misconverted "\{" tex macro introducers
  diff: fix "multiple regexp" semantics to find hunk header comment
  diff: use extended regexp to find hunk headers
  diff: use extended regexp to find hunk headers
  diff.*.xfuncname which uses "extended" regex's for hunk header selection
  diff.c: associate a flag with each pattern and use it for compiling regex
  diff.c: return pattern entry pointer rather than just the hunk header pattern

Conflicts:
	builtin-merge-recursive.c
	t/t7201-co.sh
	xdiff-interface.h
2008-09-29 11:04:20 -07:00
Shawn O. Pearce
5a139ba483 Merge branch 'maint' into bc/master-diff-hunk-header-fix
* maint: (41 commits)
  Clarify commit error message for unmerged files
  Use strchrnul() instead of strchr() plus manual workaround
  Use remove_path from dir.c instead of own implementation
  Add remove_path: a function to remove as much as possible of a path
  git-submodule: Fix "Unable to checkout" for the initial 'update'
  Clarify how the user can satisfy stash's 'dirty state' check.
  Remove empty directories in recursive merge
  Documentation: clarify the details of overriding LESS via core.pager
  Update release notes for 1.6.0.3
  checkout: Do not show local changes when in quiet mode
  for-each-ref: Fix --format=%(subject) for log message without newlines
  git-stash.sh: don't default to refs/stash if invalid ref supplied
  maint: check return of split_cmdline to avoid bad config strings
  builtin-prune.c: prune temporary packs in <object_dir>/pack directory
  Do not perform cross-directory renames when creating packs
  Use dashless git commands in setgitperms.perl
  git-remote: do not use user input in a printf format string
  make "git remote" report multiple URLs
  Start draft release notes for 1.6.0.3
  git-repack uses --no-repack-object, not --no-repack-delta.
  ...

Conflicts:
	RelNotes
2008-09-29 10:52:34 -07:00
Shawn O. Pearce
edb7e82f72 Merge branch 'bc/maint-diff-hunk-header-fix' into maint
* bc/maint-diff-hunk-header-fix:
  t4018-diff-funcname: test syntax of builtin xfuncname patterns
  diff hunk pattern: fix misconverted "\{" tex macro introducers
  diff: use extended regexp to find hunk headers
  diff.*.xfuncname which uses "extended" regex's for hunk header selection
  diff.c: associate a flag with each pattern and use it for compiling regex
  diff.c: return pattern entry pointer rather than just the hunk header pattern

Conflicts:
	Documentation/gitattributes.txt
2008-09-29 10:23:19 -07:00
Shawn O. Pearce
de81343562 Merge branch 'ho/dirstat-by-file'
* ho/dirstat-by-file:
  diff --dirstat-by-file: count changed files, not lines
2008-09-25 08:41:42 -07:00
Brandon Casey
fdac6692a0 t4018-diff-funcname: test syntax of builtin xfuncname patterns
[jc: fixes bibtex pattern breakage exposed by this test]

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-23 01:48:49 -07:00
Junio C Hamano
92bb978541 Merge branch 'bc/maint-diff-hunk-header-fix' into bc/master-diff-hunk-header-fix
* bc/maint-diff-hunk-header-fix:
  diff hunk pattern: fix misconverted "\{" tex macro introducers

Conflicts:
	diff.c
2008-09-20 18:37:47 -07:00
Junio C Hamano
96d1a8e9d4 diff hunk pattern: fix misconverted "\{" tex macro introducers
Pointed out by Brandon Casey.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-20 15:30:17 -07:00
Junio C Hamano
3d8dccd74a diff: fix "multiple regexp" semantics to find hunk header comment
When multiple regular expressions are concatenated with "\n", they were
traditionally AND'ed together, and only a line that matches _all_ of them
is taken as a match.  This however is unwieldy when multiple regexp
feature is used to specify alternatives.

This fixes the semantics to take the first match.  A nagative pattern, if
matches, makes the line to fail as before.  A match with a positive
pattern will be the final match, and what it captures in $1 is used as the
hunk header comment.

We could write alternatives using "|" in ERE, but the machinery can only
use captured $1 as the hunk header comment (or $0 if there is no match in
$1), so you cannot write:

    "junk ( A | B ) | garbage ( C | D )"

and expect both "junk" and "garbage" to get stripped with the existing
code.  With this fix, you can write it as:

    "junk ( A | B ) \n garbage ( C | D )"

and the way capture works would match the user expectation more
naturally.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-20 00:52:11 -07:00
Junio C Hamano
1883a0d3b7 diff: use extended regexp to find hunk headers
Using ERE elements such as "|" (alternation) by backquoting in BRE
is a GNU extension and should not be done in portable programs.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-19 23:52:49 -07:00
Junio C Hamano
cd0843198f Merge branch 'bc/maint-diff-hunk-header-fix' into bc/master-diff-hunk-header-fix
* bc/maint-diff-hunk-header-fix:
  diff: use extended regexp to find hunk headers

Conflicts:
	diff.c
2008-09-19 23:51:01 -07:00
Junio C Hamano
6a6baf9b4e diff: use extended regexp to find hunk headers
Using ERE elements such as "|" (alternation) by backquoting in BRE
is a GNU extension and should not be done in portable programs.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-19 23:45:04 -07:00
Junio C Hamano
dde4af4313 Merge branch 'bc/maint-diff-hunk-header-fix' into bc/master-diff-hunk-header-fix
* bc/maint-diff-hunk-header-fix:
  diff.*.xfuncname which uses "extended" regex's for hunk header selection
  diff.c: associate a flag with each pattern and use it for compiling regex
  diff.c: return pattern entry pointer rather than just the hunk header pattern
  Cosmetical command name fix
  Start conforming code to "git subcmd" style part 3
  t9700/test.pl: remove File::Temp requirement
  t9700/test.pl: avoid bareword 'STDERR' in 3-argument open()
  GIT 1.6.0.2
  Fix some manual typos.
  Use compatibility regex library also on FreeBSD
  Use compatibility regex library also on AIX
  Update draft release notes for 1.6.0.2
  Use compatibility regex library for OSX/Darwin
  git-svn: Fixes my() parameter list syntax error in pre-5.8 Perl
  Git.pm: Use File::Temp->tempfile instead of ->new
  t7501: always use test_cmp instead of diff
  Start conforming code to "git subcmd" style part 2
  diff: Help "less" hide ^M from the output
  checkout: do not check out unmerged higher stages randomly

Conflicts:
	Documentation/git.txt
	Documentation/gitattributes.txt
	Makefile
	diff.c
	t/t7201-co.sh
2008-09-18 20:32:50 -07:00
Junio C Hamano
e69a6f47c4 Merge branch 'jc/diff-prefix'
* jc/diff-prefix:
  diff: vary default prefix depending on what are compared
2008-09-18 20:30:07 -07:00
Brandon Casey
45d9414fa5 diff.*.xfuncname which uses "extended" regex's for hunk header selection
Currently, the hunk headers produced by 'diff -p' are customizable by
setting the diff.*.funcname option in the config file. The 'funcname' option
takes a basic regular expression. This functionality was designed using the
GNU regex library which, by default, allows using backslashed versions of
some extended regular expression operators, even in Basic Regular Expression
mode. For example, the following characters, when backslashed, are
interpreted according to the extended regular expression rules: ?, +, and |.
As such, the builtin funcname patterns were created using some extended
regular expression operators.

Other platforms which adhere more strictly to the POSIX spec do not
interpret the backslashed extended RE operators in Basic Regular Expression
mode. This causes the pattern matching for the builtin funcname patterns to
fail on those platforms.

Introduce a new option 'xfuncname' which uses extended regular expressions,
and advertise it _instead_ of funcname. Since most users are on GNU
platforms, the majority of funcname patterns are created and tested there.
Advertising only xfuncname should help to avoid the creation of non-portable
patterns which work with GNU regex but not elsewhere.

Additionally, the extended regular expressions may be less ugly and
complicated compared to the basic RE since many common special operators do
not need to be backslashed.

For example, the GNU Basic RE:

    ^[ 	]*\\(\\(public\\|static\\).*\\)$

becomes the following Extended RE:

    ^[ 	]*((public|static).*)$

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-18 20:06:31 -07:00
Brandon Casey
a013585b20 diff.c: associate a flag with each pattern and use it for compiling regex
This is in preparation for allowing extended regular expression patterns.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-18 20:06:23 -07:00
Brandon Casey
45e7ca0f0e diff.c: return pattern entry pointer rather than just the hunk header pattern
This is in preparation for associating a flag with each pattern which will
control how the pattern is interpreted. For example, as a basic or extended
regular expression.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-18 19:58:29 -07:00
Junio C Hamano
01409bbf75 Merge branch 'jc/maint-diff-quiet' into maint
* jc/maint-diff-quiet:
  diff --quiet: make it synonym to --exit-code >/dev/null
  diff Porcelain: do not disable auto index refreshing on -C -C
2008-09-18 19:53:12 -07:00
Junio C Hamano
8e909f80b4 Merge branch 'jc/maint-diff-quiet'
* jc/maint-diff-quiet:
  diff --quiet: make it synonym to --exit-code >/dev/null
  diff Porcelain: do not disable auto index refreshing on -C -C
2008-09-16 00:48:16 -07:00
Junio C Hamano
26c10c7ad3 Merge branch 'jc/maint-hide-cr-in-diff-from-less' into maint
* jc/maint-hide-cr-in-diff-from-less:
  diff: Help "less" hide ^M from the output
2008-09-10 02:14:18 -07:00
Junio C Hamano
fdfb4cfadc Merge branch 'jc/hide-cr-in-diff-from-less'
* jc/hide-cr-in-diff-from-less:
  diff: Help "less" hide ^M from the output
2008-09-07 23:45:40 -07:00
Andreas Ericsson
af9ce1ffc6 Teach "git diff -p" to locate PHP class methods
Otherwise it will always print the class-name rather
than the name of the function inside that class.

While we're at it, reorder the gitattributes manpage to
list the built-in funcname pattern names in alphabetical
order.

Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-07 15:22:24 -07:00
Junio C Hamano
df58a8274d diff --quiet: make it synonym to --exit-code >/dev/null
The point of --quiet was to return the status as early as possible without
doing any extra processing.  Well behaved scripts, when they expect to run
many diff operations inside, are supposed to run "update-index --refresh"
upfront; we do not want them to pay the price of iterating over the index
and comparing the contents to fix the stat dirtiness, and we avoided most
of the processing in diffcore_std() when --quiet is in effect.

But scripts that adhere to the good practice won't have to pay any more
price than the necessary lstat(2) that will report stat cleanliness, as
long as only -q is given without any fancier diff options.

More importantly, users who do ask for "--quiet -M --filter=D" (in order
to notice only the deletion, not paths that disappeared only because they
have been renamed away) deserve to get the result they asked for, even it
means they have to pay the extra price; the alternative is to get a cheap
early return that gives a result they did not ask for, which is much
worse.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-06 19:15:04 -07:00
Junio C Hamano
9d865356ab diff Porcelain: do not disable auto index refreshing on -C -C
When we enabled the automatic refreshing of the index to "diff" Porcelain,
we disabled it when --find-copies-harder was asked, but there is no good
reason to do so.  In the following command sequence, the first "diff"
shows an "empty" diff exposing stat dirtyness, while the second one does
not.

    $ >foo
    $ git add foo
    $ touch foo
    $ git diff -C -C
    $ git diff -C

This fixes the inconsistency.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-06 19:09:16 -07:00
Heikki Orsila
fd33777b78 diff --dirstat-by-file: count changed files, not lines
This new option --dirstat-by-file is the same as --dirstat, but it
counts "impacted files" instead of "impacted lines" (lines that are
added or removed).

Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-05 14:04:26 -07:00
Junio C Hamano
80d12c23de Merge branch 'jc/maint-log-grep'
* jc/maint-log-grep:
  log --author/--committer: really match only with name part
  diff --cumulative is a sub-option of --dirstat
  bash completion: Hide more plumbing commands
2008-09-04 22:30:44 -07:00
Junio C Hamano
f88d225feb diff --cumulative is a sub-option of --dirstat
The option used to be implemented as if it is a totally independent one,
but "git diff --cumulative" would not mean anything without "--dirstat".

This makes --cumulative imply --dirstat.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-03 22:37:03 -07:00
Junio C Hamano
a5a818ee48 diff: vary default prefix depending on what are compared
With a new configuration "diff.mnemonicprefix", "git diff" shows the
differences between various combinations of preimage and postimage trees
with prefixes different from the standard "a/" and "b/".  Hopefully this
will make the distinction stand out for some people.

    "git diff" compares the (i)ndex and the (w)ork tree;
    "git diff HEAD" compares a (c)ommit and the (w)ork tree;
    "git diff --cached" compares a (c)ommit and the (i)ndex;
    "git-diff HEAD:file1 file2" compares an (o)bject and a (w)ork tree entity;
    "git diff --no-index a b" compares two non-git things (1) and (2).

Because these mnemonics now have meanings, they are swapped when reverse
diff is in effect and this feature is enabled.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 20:53:24 -07:00
Junio C Hamano
3928097020 diff: Help "less" hide ^M from the output
When the tracked contents have CRLF line endings, colored diff output
shows "^M" at the end of output lines, which is distracting, even though
the pager we use by default ("less") knows to hide them.

The problem is that "less" hides a carriage-return only at the end of the
line, immediately before a line feed.  The colored diff output does not
take this into account, and emits four element sequence for each line:

   - force this color;
   - the line up to but not including the terminating line feed;
   - reset color
   - line feed.

By including the carriage return at the end of the line in the second
item, we are breaking the smart our pager has in order not to show "^M".
This can be fixed by changing the sequence to:

   - force this color;
   - the line up to but not including the terminating end-of-line;
   - reset color
   - end-of-line.

where end-of-line is either a single linefeed or a CRLF pair.  When the
output is not colored, "force this color" and "reset color" sequences are
both empty, so we won't have this problem with or without this patch.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 20:34:45 -07:00
Junio C Hamano
445cac18c0 Merge branch 'maint'
* maint:
  tutorial: gentler illustration of Alice/Bob workflow using gitk
  pretty=format: respect date format options
  make git-shell paranoid about closed stdin/stdout/stderr
  Document gitk --argscmd flag.
  Fix '--dirstat' with cross-directory renaming
  for-each-ref: Allow a trailing slash in the patterns
2008-08-29 00:16:39 -07:00
Linus Torvalds
441bca0bbc Fix '--dirstat' with cross-directory renaming
The dirstat code depends on the fact that we always generate diffs with
the names sorted, since it then just does a single-pass walk-over of the
sorted list of names and how many changes there were. The sorting means
that all files are nicely grouped by directory.

That all works fine.

Except when we have rename detection, and suddenly the nicely sorted list
of pathnames isn't all that sorted at all. And now the single-pass dirstat
walk gets all confused, and you can get results like this:

  [torvalds@nehalem linux]$ git diff --dirstat=2 -M v2.6.27-rc4..v2.6.27-rc5
     3.0% arch/powerpc/configs/
     6.8% arch/arm/configs/
     2.7% arch/powerpc/configs/
     4.2% arch/arm/configs/
     5.6% arch/powerpc/configs/
     8.4% arch/arm/configs/
     5.5% arch/powerpc/configs/
    23.3% arch/arm/configs/
     8.6% arch/powerpc/configs/
     4.0% arch/
     4.4% drivers/usb/musb/
     4.0% drivers/watchdog/
     7.6% drivers/
     3.5% fs/

The trivial fix is to add a sorting pass, fixing it to:

  [torvalds@nehalem linux]$ git diff --dirstat=2 -M v2.6.27-rc4..v2.6.27-rc5
    43.0% arch/arm/configs/
    25.5% arch/powerpc/configs/
     5.3% arch/
     4.4% drivers/usb/musb/
     4.0% drivers/watchdog/
     7.6% drivers/
     3.5% fs/

Spot the difference. In case anybody wonders: it's because of a ton of
renames from {include/asm-blackfin => arch/blackfin/include/asm} that just
totally messed up the file ordering in between arch/arm and arch/powerpc.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 00:14:29 -07:00
Johan Herland
1a1fcf4abe Teach "git diff -p" HTML funcname patterns
Find lines with <h1>..<h6> tags.

[jc: while at it, reordered entries to sort alphabetically.]

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-20 23:56:31 -07:00
Kirill Smelkov
7c17205b64 Teach "git diff -p" Python funcname patterns
Find classes, functions, and methods definitions.

Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-20 23:53:33 -07:00
Junio C Hamano
e28a8670a6 Merge branch 'maint'
* maint:
  Update draft release notes for 1.6.0.1
  Add hints to revert documentation about other ways to undo changes
  Install templates with the user and group of the installing personality
  "git-merge": allow fast-forwarding in a stat-dirty tree
  completion: find out supported merge strategies correctly
  decorate: allow const objects to be decorated
  for-each-ref: cope with tags with incomplete lines
  diff --check: do not get confused by new blank lines in the middle
  remote.c: remove useless if-before-free test
  mailinfo: avoid violating strbuf assertion
  git format-patch: avoid underrun when format.headers is empty or all NLs
2008-08-20 16:18:16 -07:00
Junio C Hamano
c35539eb10 diff --check: do not get confused by new blank lines in the middle
The code remembered that the last diff output it saw was an empty line,
and tried to reset that state whenever it sees a context line, a non-blank
new line, or a new hunk.  However, this codepath asks the underlying diff
engine to feed diff without any context, and the "just saw an empty line"
state was not reset if you added a new blank line in the last hunk of your
patch, even if it is not the last line of the file.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-20 13:28:19 -07:00
Junio C Hamano
3814c07498 Merge branch 'bd/diff-strbuf'
* bd/diff-strbuf:
  xdiff-interface: hide the whole "xdiff_emit_state" business from the caller
  Use strbuf for struct xdiff_emit_state's remainder
  Make xdi_diff_outf interface for running xdiff_outf diffs
2008-08-19 21:43:40 -07:00
Jim Meyering
a624eaa782 add boolean diff.suppress-blank-empty config option
GNU diff's --suppress-blank-empty option makes it so that diff no
longer outputs trailing white space unless the input data has it.
With this option, empty context lines are now empty also in diff -u output.
Before, they would have a single trailing space.

 * diff.c (diff_suppress_blank_empty): New global.
   (git_diff_basic_config): Set it.
   (fn_out_consume): Honor it.
 * t/t4029-diff-trailing-space.sh: New file.
 * Documentation/config.txt: Document it.

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-19 18:09:37 -07:00
Junio C Hamano
8a3f524bf2 xdiff-interface: hide the whole "xdiff_emit_state" business from the caller
This further enhances xdi_diff_outf() interface so that it takes two
common parameters: the callback function that processes one line at a
time, and a pointer to its application specific callback data structure.
xdi_diff_outf() creates its own "xdiff_emit_state" structure and stashes
these two away inside it, which is used by the lowest level output
function in the xdiff_outf() callchain, consume_one(), to call back to the
application layer.  With this restructuring, we lift the requirement that
the caller supplied callback data structure embeds xdiff_emit_state
structure as its first member.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-14 00:30:26 -07:00
Brian Downing
c99db9d292 Make xdi_diff_outf interface for running xdiff_outf diffs
To prepare for the need to initialize and release resources for an
xdi_diff with the xdiff_outf output function, make a new function to
wrap this usage.

Old:

	ecb.outf = xdiff_outf;
	ecb.priv = &state;
	...
	xdi_diff(file_p, file_o, &xpp, &xecfg, &ecb);

New:

	xdi_diff_outf(file_p, file_o, &state.xm, &xpp, &xecfg, &ecb);

Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-13 23:10:23 -07:00
Gustaf Hendeby
23b5beb28f Teach git diff about BibTeX head hunk patterns
All BibTeX entries starts with an @ followed by an entry type.  Since
there are many entry types and own can be defined, the pattern matches
legal entry type names instead of just the default types (which would
be a long list).  The pattern also matches strings and comments since
they will also be useful to position oneself in a bib-file.

Signed-off-by: Gustaf Hendeby <hendeby@isy.liu.se>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-12 15:43:55 -07:00
Junio C Hamano
04c6e9e9ca diff --check: do not unconditionally complain about trailing empty lines
Recently "git diff --check" learned to detect new trailing blank lines
just like "git apply --whitespace" does.  However this check should not
trigger unconditionally.  This patch makes it honor the whitespace
settings from core.whitespace and gitattributes.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-11 22:15:28 -07:00
Junio C Hamano
04bb50f45d Merge branch 'maint'
* maint:
  RelNotes 1.5.6.5 updates
  diff.renamelimit is a basic diff configuration
  git-cvsimport.perl: Print "UNKNOWN LINE..." on stderr, not stdout.
  Documentation: typos / spelling fixes in older RelNotes
2008-08-05 21:21:08 -07:00
Linus Torvalds
2b6ca6df2d diff.renamelimit is a basic diff configuration
The configuration was added as a core option in 3299c6f (diff: make
default rename detection limit configurable., 2005-11-15), but 9ce392f
(Move diff.renamelimit out of default configuration., 2005-11-21)
separated diff-related stuff out of the core.

Up to that point it was Ok.

When we separated the Porcelain options out of the git_diff_config in
83ad63c (diff: do not use configuration magic at the core-level,
2006-07-08), we should have been more careful.

This mistake made diff-tree plumbing and git-show Porcelain to notice
different set of renames when the user explicitly asked for rename
detection.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-05 18:27:31 -07:00
Giuseppe Bilotta
807d869453 diff: chapter and part in funcname for tex
This patch enhances the tex funcname by adding support for
chapter and part sectioning commands. It also matches
the starred version of the sectioning commands.

Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-02 15:40:57 -07:00
Avery Pennarun
b50005b79f Teach "git diff -p" Pascal/Delphi funcname pattern
Finds classes, records, functions, procedures, and sections.  Most lines
need to start at the first column, or else there's no way to differentiate
a procedure's definition from its declaration.

Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-02 15:39:35 -07:00
Giuseppe Bilotta
ad8c1d9260 diff: add ruby funcname pattern
Provide a regexp that catches class, module and method definitions in
Ruby scripts, since the built-in default only finds classes.

Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-02 15:38:14 -07:00
Kevin Ballard
6b2fbaaffc format-patch: Produce better output with --inline or --attach
This patch makes two small changes to improve the output of --inline
and --attach.

The first is to write a newline preceding the boundary. This is needed because
MIME defines the encapsulation boundary as including the preceding CRLF (or in
this case, just LF), so we should be writing one. Without this, the last
newline in the pre-diff content is consumed instead.

The second change is to always write the line termination character
(default: newline) even when using --inline or --attach. This is simply to
improve the aesthetics of the resulting message. When using --inline an email
client should render the resulting message identically to the non-inline
version. And when using --attach this adds a blank line preceding the
attachment in the email, which is visually attractive.

Signed-off-by: Kevin Ballard <kevin@sb.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-29 23:18:15 -07:00
Junio C Hamano
88bbda08d7 Merge branch 'maint'
* maint:
  Start preparing 1.5.6.4 release notes
  git fetch-pack: do not complain about "no common commits" in an empty repo
  rebase-i: keep old parents when preserving merges
  t7600-merge: Use test_expect_failure to test option parsing
  Fix buffer overflow in prepare_attr_stack
  Fix buffer overflow in git diff
  Fix buffer overflow in git-grep
  git-cvsserver: fix call to nonexistant cleanupWorkDir()
  Documentation/git-cherry-pick.txt et al.: Fix misleading -n description

Conflicts:
	RelNotes
2008-07-16 17:10:28 -07:00