Граф коммитов

550 Коммитов

Автор SHA1 Сообщение Дата
Junio C Hamano b0b3a241e2 Merge branch 'maint-1.6.1' into maint
* maint-1.6.1:
  textconv: stop leaking file descriptors
  commit: --cleanup is a message option
  git count-objects: handle packs bigger than 4G
  t7102: make the test fail if one of its check fails

Conflicts:
	builtin-commit.c
	diff.c
2009-12-30 01:24:12 -08:00
Jeff King 70d7099916 textconv: stop leaking file descriptors
We read the output from textconv helpers over a pipe, but we
never actually closed our end of the pipe after using it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-30 01:22:27 -08:00
Junio C Hamano a1bb8f45f1 Merge branch 'maint' to sync with 1.6.5.7
* maint:
  Git 1.6.5.7
  worktree: don't segfault with an absolute pathspec without a work tree
  ignore unknown color configuration
  help.autocorrect: do not run a command if the command given is junk
  Illustrate "filter" attribute with an example
2009-12-16 12:47:15 -08:00
Jeff King 8b8e862490 ignore unknown color configuration
When parsing the config file, if there is a value that is
syntactically correct but unused, we generally ignore it.
This lets non-core porcelains store arbitrary information in
the config file, and it means that configuration files can
be shared between new and old versions of git (the old
versions might simply ignore certain configuration).

The one exception to this is color configuration; if we
encounter a color.{diff,branch,status}.$slot variable, we
die if it is not one of the recognized slots (presumably as
a safety valve for user misconfiguration). This behavior
has existed since 801235c (diff --color: use
$GIT_DIR/config, 2006-06-24), but hasn't yet caused a
problem. No porcelain has wanted to store extra colors, and
we once a color area (like color.diff) has been introduced,
we've never changed the set of color slots.

However, that changed recently with the addition of
color.diff.func. Now a user with color.diff.func in their
config can no longer freely switch between v1.6.6 and older
versions; the old versions will complain about the existence
of the variable.

This patch loosens the check to match the rest of
git-config; unknown color slots are simply ignored. This
doesn't fix this particular problem, as the older version
(without this patch) is the problem, but it at least
prevents it from happening again in the future.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-16 12:45:16 -08:00
Bert Wesarg 89cb73a19a Give the hunk comment its own color
Inspired by the coloring of quilt.

Introduce a separate color and paint the hunk comment part, i.e. the name
of the function, in a separate color "diff.func" (defaults to plain).

Whitespace between hunk header and hunk comment is printed in plain color.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-28 10:05:44 -08:00
Junio C Hamano 06a4755270 emit_line(): don't emit an empty <SET><RESET> followed by a newline
When emit_line() is called with an empty line (but non-zero length, as we
send line terminating LF or CRLF to the function), it used to emit
<SET><RESET> followed by a newline.  Stop the wastefulness.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-27 22:33:53 -08:00
Junio C Hamano d404a3e1a5 Merge branch 'js/maint-diff-color-words' into maint
* js/maint-diff-color-words:
  diff --color-words: bit of clean-up
  diff --color-words -U0: fix the location of hunk headers
  t4034-diff-words: add a test for word diff without context

Conflicts:
	diff.c
2009-11-16 00:01:56 -08:00
Junio C Hamano 6dbdba00ea Merge branch 'jc/maint-blank-at-eof' into maint
* jc/maint-blank-at-eof:
  diff -B: colour whitespace errors
  diff.c: emit_add_line() takes only the rest of the line
  diff.c: split emit_line() from the first char and the rest of the line
  diff.c: shuffling code around
  diff --whitespace: fix blank lines at end
  core.whitespace: split trailing-space into blank-at-{eol,eof}
  diff --color: color blank-at-eof
  diff --whitespace=warn/error: fix blank-at-eof check
  diff --whitespace=warn/error: obey blank-at-eof
  diff.c: the builtin_diff() deals with only two-file comparison
  apply --whitespace: warn blank but not necessarily empty lines at EOF
  apply --whitespace=warn/error: diagnose blank at EOF
  apply.c: split check_whitespace() into two
  apply --whitespace=fix: detect new blank lines at eof correctly
  apply --whitespace=fix: fix handling of blank lines at the eof
2009-11-15 23:06:34 -08:00
Junio C Hamano 002a9ec005 Merge branch 'js/maint-diff-color-words'
* js/maint-diff-color-words:
  diff --color-words: bit of clean-up
  diff --color-words -U0: fix the location of hunk headers
  t4034-diff-words: add a test for word diff without context

Conflicts:
	diff.c
2009-11-15 16:41:29 -08:00
Junio C Hamano 76fd28283f diff --color-words: bit of clean-up
When we introduced the "word diff" mode, we could have done one of three
things:

 * change fn_out_consume() to "this is called every time a line worth of
   diff becomes ready from the lower-level diff routine.  This function
   knows two sets of helpers (one for line-oriented diff, another for word
   diff), and each set has various functions to be called at certain
   places (e.g. hunk header, context, ...).  The function's role is to
   inspect the incoming line, and dispatch appropriate helpers to produce
   either line- or word- oriented diff output."

 * introduce fn_out_consume_word_diff() that is "this is called every time
   a line worth of diff becomes ready from the lower-level diff routine,
   and here is what we do to prepare word oriented diff using that line."
   without touching fn_out_consume() at all.

 * Do neither of the above, and keep fn_out_consume() to "this is called
   every time a line worth of diff becomes ready from the lower-level diff
   routine, and here is what we do to output line oriented diff using that
   line."  but sprinkle a handful of 'are we in word-diff mode?  if so do
   this totally different thing' at random places.

This patch is to at least abstract the details of "this totally different
thing" out from the main codepath, in order to improve readability.

We can later refactor it by introducing fn_out_consume_word_diff(), taking
the second route above, but that is a separate topic.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-31 14:25:15 -07:00
Junio C Hamano d39d667169 Merge branch 'js/diff-verbose-submodule'
* js/diff-verbose-submodule:
  add tests for git diff --submodule
  Add the --submodule option to the diff option family
2009-10-30 20:16:26 -07:00
Johannes Schindelin a4ca1465ec diff --color-words -U0: fix the location of hunk headers
Colored word diff without context lines firstly printed all the hunk
headers among each other and then printed the diff.

This was due to the code relying on getting at least one context line at
the end of each hunk, where the colored words would be flushed (it is
done that way to be able to ignore rewrapped lines).

Noticed by Markus Heidelberg.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-30 09:42:56 -07:00
Johannes Schindelin 752c0c2492 Add the --submodule option to the diff option family
When you use the option --submodule=log you can see the submodule
summaries inlined in the diff, instead of not-quite-helpful SHA-1 pairs.

The format imitates what "git submodule summary" shows.

To do that, <path>/.git/objects/ is added to the alternate object
databases (if that directory exists).

This option was requested by Jens Lehmann at the GitTogether in Berlin.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-19 22:31:00 -07:00
Junio C Hamano 9981c808b4 Merge branch 'jc/maint-blank-at-eof'
* jc/maint-blank-at-eof:
  diff -B: colour whitespace errors
  diff.c: emit_add_line() takes only the rest of the line
  diff.c: split emit_line() from the first char and the rest of the line
  diff.c: shuffling code around
  diff --whitespace: fix blank lines at end
  core.whitespace: split trailing-space into blank-at-{eol,eof}
  diff --color: color blank-at-eof
  diff --whitespace=warn/error: fix blank-at-eof check
  diff --whitespace=warn/error: obey blank-at-eof
  diff.c: the builtin_diff() deals with only two-file comparison
  apply --whitespace: warn blank but not necessarily empty lines at EOF
  apply --whitespace=warn/error: diagnose blank at EOF
  apply.c: split check_whitespace() into two
  apply --whitespace=fix: detect new blank lines at eof correctly
  apply --whitespace=fix: fix handling of blank lines at the eof
2009-10-17 00:11:03 -07:00
Felipe Contreras 2775d92c53 diff.c: stylefix
Essentially; s/type* /type */ as per the coding guidelines.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-11 21:54:44 -07:00
Junio C Hamano d91ba8fa88 Merge branch 'jc/maint-1.6.0-blank-at-eof' into jc/maint-blank-at-eof
* jc/maint-1.6.0-blank-at-eof:
  diff -B: colour whitespace errors
2009-09-15 11:21:10 -07:00
Junio C Hamano 61c6457e89 Merge branch 'jc/maint-1.6.0-blank-at-eof' (early part) into jc/maint-blank-at-eof
* 'jc/maint-1.6.0-blank-at-eof' (early part):
  diff.c: emit_add_line() takes only the rest of the line
  diff.c: split emit_line() from the first char and the rest of the line
2009-09-15 11:20:46 -07:00
Junio C Hamano bb35fefbc9 Merge branch 'jc/maint-1.6.0-blank-at-eof' (early part) into jc/maint-blank-at-eof
* 'jc/maint-1.6.0-blank-at-eof' (early part):
  diff.c: shuffling code around
2009-09-15 03:38:30 -07:00
Junio C Hamano afd9db4173 Merge branch 'jc/maint-1.6.0-blank-at-eof' (early part) into jc/maint-blank-at-eof
* 'jc/maint-1.6.0-blank-at-eof' (early part):
  diff --whitespace: fix blank lines at end
  core.whitespace: split trailing-space into blank-at-{eol,eof}
  diff --color: color blank-at-eof
  diff --whitespace=warn/error: fix blank-at-eof check
  diff --whitespace=warn/error: obey blank-at-eof
  diff.c: the builtin_diff() deals with only two-file comparison
  apply --whitespace: warn blank but not necessarily empty lines at EOF
  apply --whitespace=warn/error: diagnose blank at EOF
  apply.c: split check_whitespace() into two
  apply --whitespace=fix: detect new blank lines at eof correctly
  apply --whitespace=fix: fix handling of blank lines at the eof
2009-09-15 03:28:08 -07:00
Junio C Hamano 7f7ee2ff2d diff -B: colour whitespace errors
We used to send the old and new contents more or less straight out to the
output with only the original "old is red, new is green" colouring.  Now
all the necessary support routines have been prepared, call them with a
line of data at a time from the output code and have them check and color
whitespace errors in exactly the same way as they are called from the low
level diff callback routines.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-15 02:41:03 -07:00
Junio C Hamano 018cff7046 diff.c: emit_add_line() takes only the rest of the line
As the first character on the line that is fed to this function is always
"+", it is pointless to send that along with the rest of the line.

This change will make it easier to reuse the logic when emitting the
rewrite diff, as we do not want to copy a line only to add "+"/"-"/" "
immediately before its first character when we produce rewrite diff
output.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-15 02:41:02 -07:00
Junio C Hamano 250f79930d diff.c: split emit_line() from the first char and the rest of the line
A new helper function emit_line_0() takes the first line of diff output
(typically "-", " ", or "+") separately from the remainder of the line.
No other functional changes.

This change will make it easier to reuse the logic when emitting the
rewrite diff, as we do not want to copy a line only to add "+"/"-"/" "
immediately before its first character when we produce rewrite diff
output.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-15 02:40:51 -07:00
Junio C Hamano 6957eb9a39 diff.c: shuffling code around
Move function, type, and structure definitions for fill_mmfile(),
count_trailing_blank(), check_blank_at_eof(), emit_line(),
new_blank_line_at_eof(), emit_add_line(), sane_truncate_fn, and
emit_callback up in the file, so that they can be refactored into helper
functions and reused by codepath for emitting rewrite patches.

This only moves the lines around to make the next two patches easier to
read.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-14 22:18:49 -07:00
Junio C Hamano d68fe26f3e diff --whitespace: fix blank lines at end
The earlier logic tried to colour any and all blank lines that were added
beyond the last blank line in the original, but this was very wrong.  If
you added 96 blank lines, a non-blank line, and then 3 blank lines at the
end, only the last 3 lines should trigger the error, not the earlier 96
blank lines.

We need to also make sure that the lines are after the last non-blank line
in the postimage as well before deciding to paint them.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-14 22:18:36 -07:00
Junio C Hamano 690ed84363 diff --color: color blank-at-eof
Since the coloring logic processed the patch output one line at a time, we
couldn't easily color code the new blank lines at the end of file.

Reuse the adds_blank_at_eof() function to find where the runs of such
blank lines start, keep track of the line number in the preimage while
processing the patch output one line at a time, and paint the new blank
lines that appear after that line to implement this.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-04 11:50:27 -07:00
Junio C Hamano 467babf8d0 diff --whitespace=warn/error: fix blank-at-eof check
The "diff --check" logic used to share the same issue as the one fixed for
"git apply" earlier in this series, in that a patch that adds new blank
lines at end could appear as

    @@ -l,5 +m,7 @@$
    _context$
    _context$
    -deleted$
    +$
    +$
    +$
    _$
    _$

where _ stands for SP and $ shows a end-of-line.  Instead of looking at
each line in the patch in the callback, simply count the blank lines from
the end in two versions, and notice the presence of new ones.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-04 11:50:27 -07:00
Junio C Hamano 5b5061efd8 diff --whitespace=warn/error: obey blank-at-eof
The "diff --check" code used to conflate trailing-space whitespace error
class with this, but now we have a proper separate error class, we should
check it under blank-at-eof, not trailing-space.

The whitespace error is not about _having_ blank lines at end, but about
adding _new_ blank lines.  To keep the message consistent with what is
given by "git apply", call whitespace_error_string() to generate it,
instead of using a hardcoded custom message.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-04 11:50:26 -07:00
Junio C Hamano b8d9c1a66b diff.c: the builtin_diff() deals with only two-file comparison
The combined diff is implemented in combine_diff() and fn_out_consume()
codepath never has to deal with anything but two-file comparision.

Drop nparents from the emit_callback structure and simplify the code.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-04 11:50:26 -07:00
Brian Gianforcaro eeefa7c90e Style fixes, add a space after if/for/while.
The majority of code in core git appears to use a single
space after if/for/while. This is an attempt to bring more
code to this standard. These are entirely cosmetic changes.

Signed-off-by: Brian Gianforcaro <b.gianfo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-31 23:26:28 -07:00
Junio C Hamano 128a9d86da Merge branch 'rs/grep-p'
* rs/grep-p:
  grep: simplify -p output
  grep -p: support user defined regular expressions
  grep: add option -p/--show-function
  grep: handle pre context lines on demand
  grep: print context hunk marks between files
  grep: move context hunk mark handling into show_line()
  userdiff: add xdiff_clear_find_func()
2009-07-09 00:59:58 -07:00
Junio C Hamano dd787c19c4 Merge branch 'tr/die_errno'
* tr/die_errno:
  Use die_errno() instead of die() when checking syscalls
  Convert existing die(..., strerror(errno)) to die_errno()
  die_errno(): double % in strerror() output just in case
  Introduce die_errno() that appends strerror(errno) to die()
2009-07-06 09:39:46 -07:00
René Scharfe 8cfe5f1cd5 userdiff: add xdiff_clear_find_func()
xdiff_set_find_func() is used to set user defined regular expressions
for finding function signatures.  Add xdiff_clear_find_func(), which
frees the memory allocated by the former, making the API complete.

Also, use the new function in diff.c (the only call site of
xdiff_set_find_func()) to clean up after ourselves.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-01 19:16:37 -07:00
Thomas Rast 0721c314a5 Use die_errno() instead of die() when checking syscalls
Lots of die() calls did not actually report the kind of error, which
can leave the user confused as to the real problem.  Use die_errno()
where we check a system/library call that sets errno on failure, or
one of the following that wrap such calls:

  Function              Passes on error from
  --------              --------------------
  odb_pack_keep         open
  read_ancestry         fopen
  read_in_full          xread
  strbuf_read           xread
  strbuf_read_file      open or strbuf_read_file
  strbuf_readlink       readlink
  write_in_full         xwrite

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-27 11:14:53 -07:00
Thomas Rast d824cbba02 Convert existing die(..., strerror(errno)) to die_errno()
Change calls to die(..., strerror(errno)) to use the new die_errno().

In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-27 11:14:53 -07:00
Junio C Hamano f4f78e668d Merge branch 'maint'
* maint:
  diff.c: plug a memory leak in an error path
  fetch-pack: close output channel after sideband demultiplexer terminates
  builtin-remote: Make "remote show" display all urls
2009-06-09 00:29:36 -07:00
Johannes Sixt 802f9c9cb2 diff.c: plug a memory leak in an error path
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-08 21:19:26 -07:00
David Aguilar 003b33a8ad diff: generate pretty filenames in prep_temp_blob()
Naturally, prep_temp_blob() did not care about filenames.
As a result, GIT_EXTERNAL_DIFF and textconv generated
filenames such as ".diff_XXXXXX".

This modifies prep_temp_blob() to generate user-friendly
filenames when creating temporary files.

Diffing "name.ext" now generates "XXXXXX_name.ext".

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:57:59 -07:00
Junio C Hamano 2c5942dbae Merge branch 'ar/unlink-err' into maint
* ar/unlink-err:
  print unlink(2) errno in copy_or_link_directory
  replace direct calls to unlink(2) with unlink_or_warn
  Introduce an unlink(2) wrapper which gives warning if unlink failed
2009-05-25 19:01:50 -07:00
Jeff King 3cd7388d57 convert bare readlink to strbuf_readlink
This particular readlink call never NUL-terminated its
result, making it a potential source of bugs (though there
is no bug now, as it currently always respects the length
field). Let's just switch it to strbuf_readlink which is
shorter and less error-prone.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-25 11:34:02 -07:00
Junio C Hamano 36587681b4 Merge branch 'ar/unlink-err'
* ar/unlink-err:
  print unlink(2) errno in copy_or_link_directory
  replace direct calls to unlink(2) with unlink_or_warn
  Introduce an unlink(2) wrapper which gives warning if unlink failed
2009-05-18 09:01:06 -07:00
Junio C Hamano c16cea7345 Merge branch 'mh/diff-stat-color'
* mh/diff-stat-color:
  diff: do not color --stat output like patch context
2009-05-18 08:59:54 -07:00
Junio C Hamano e89c6ea998 Merge branch 'jc/maint-1.6.0-keep-pack' into maint-1.6.1
* jc/maint-1.6.0-keep-pack:
  pack-objects: don't loosen objects available in alternate or kept packs
  t7700: demonstrate repack flaw which may loosen objects unnecessarily
  Remove --kept-pack-only option and associated infrastructure
  pack-objects: only repack or loosen objects residing in "local" packs
  git-repack.sh: don't use --kept-pack-only option to pack-objects
  t7700-repack: add two new tests demonstrating repacking flaws
  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
2009-05-03 15:01:31 -07:00
Junio C Hamano 3f3e2c26fa Merge branch 'jc/maint-1.6.0-diff-borrow-carefully' into maint-1.6.1
* jc/maint-1.6.0-diff-borrow-carefully:
  diff --cached: do not borrow from a work tree when a path is marked as assume-unchanged
2009-05-03 15:01:26 -07:00
Felipe Contreras 4b25d091ba Fix a bunch of pointer declarations (codestyle)
Essentially; s/type* /type */ as per the coding guidelines.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-01 15:17:31 -07:00
Alex Riesen 691f1a28bf replace direct calls to unlink(2) with unlink_or_warn
This helps to notice when something's going wrong, especially on
systems which lock open files.

I used the following criteria when selecting the code for replacement:
- it was already printing a warning for the unlink failures
- it is in a function which already printing something or is
  called from such a function
- it is in a static function, returning void and the function is only
  called from a builtin main function (cmd_)
- it is in a function which handles emergency exit (signal handlers)
- it is in a function which is obvously cleaning up the lockfiles

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-29 18:37:41 -07:00
Markus Heidelberg a408e0e649 diff: do not color --stat output like patch context
The diffstat used the color.diff.plain slot (context text) for coloring
filenames and the whole summary line. This didn't look nice and the
affected text isn't patch context at all.

Signed-off-by: Markus Heidelberg <markus.heidelberg@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-26 01:37:47 -07:00
Linus Torvalds cced5fbc24 Allow users to un-configure rename detection
I told people on the kernel mailing list to please use "-M" when sending
me rename patches, so that I can see what they do while reading email
rather than having to apply the patch and then look at the end result.

I also told them that if they want to make it the default, they can just
add

	[diff]
		renames

to their ~/.gitconfig file. And while I was thinking about that, I wanted
to also check whether you can then mark individual projects to _not_ have
that default in the per-repository .git/config file.

And you can't. Currently you cannot have a global "enable renames by
default" and then a local ".. but not for _this_ project". Why? Because if
somebody writes

	[diff]
		renames = no

we simply ignore it, rather than resetting "diff_detect_rename_default"
back to zero.

Fixed thusly.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-11 22:22:00 -07:00
Junio C Hamano aa72a14a7f Merge branch 'jc/maint-1.6.0-diff-borrow-carefully'
* jc/maint-1.6.0-diff-borrow-carefully:
  diff --cached: do not borrow from a work tree when a path is marked as assume-unchanged
2009-03-28 00:42:31 -07:00
Junio C Hamano b71fdc590d Merge branch 'js/maint-diff-temp-smudge'
* js/maint-diff-temp-smudge:
  Smudge the files fed to external diff and textconv
2009-03-26 00:27:30 -07:00
Junio C Hamano 150115aded diff --cached: do not borrow from a work tree when a path is marked as assume-unchanged
When the index says that the file in the work tree that corresponds to the
blob object that is used for comparison is known to be unchanged, "diff"
reads from the file and applies convert_to_git(), instead of inflating the
object, to feed the internal diff engine with, because an earlier
benchnark found that it tends to be faster to use this optimization.

However, the index can lie when the path is marked as assume-unchanged.
Disable the optimization for such paths.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-22 15:26:07 -07:00