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Author SHA1 Message Date
Clemens Buchacher
55ba8a3474 git gui: show diffs with a minimum of 1 context line
Staging hunks without context does not work, because line number
information would have to be recomputed for individual hunks.

Since it is already possible to stage individual lines using
'Stage Line for Commit', zero context diffs are not really
necessary for git gui.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-09-01 12:45:46 -07:00
Ask Bjørn Hansen
1487743687 Document sendemail.envelopesender configuration
Signed-off-by: Ask Bjørn Hansen <ask@develooper.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-31 16:32:07 -07:00
Gustaf Hendeby
e5b5c1d2cf Document clarification: gitmodules, gitattributes
The SYNOPSIS section of gitattibutes and gitmodule fail to clearly
specify the name of the in tree files used.  This patch brings in the
initial `.' and the fact that the `.gitmodules' file should reside at
the top-level of the working tree.

Signed-off-by: Gustaf Hendeby <hendeby@isy.liu.se>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-31 16:31:58 -07:00
Junio C Hamano
7e44c93558 'git foo' program identifies itself without dash in die() messages
This is a mechanical conversion of all '*.c' files with:

	s/((?:die|error|warning)\("git)-(\S+:)/$1 $2/;

The result was manually inspected and no false positive was found.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-31 09:39:19 -07:00
Nguyễn Thái Ngọc Duy
bb528633b3 setup_git_directory(): fix move to worktree toplevel directory
When setup_git_directory() returns successfully, it is supposed to move
current working directory to worktree toplevel directory.

However, the code recomputing prefix inside setup_git_directory() has
to move cwd back to original working directory, in order to get new
prefix.  After that, it should move cwd back to worktree toplevel
directory as expected.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 23:41:12 -07:00
Nguyễn Thái Ngọc Duy
f83eafdd62 update-index: fix worktree setup
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 23:35:51 -07:00
Teemu Likonen
1707adb7f2 config.txt: Add missing colons after option name
gitcvs.usecrlfattr --> gitcvs.usecrlfattr::

This fixes an asciidoc markup issue.

Signed-off-by: Teemu Likonen <tlikonen@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 23:35:12 -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
bbb896d8e1 gitattributes: -crlf is not binary
The description of crlf attribute incorrectly said that "-crlf" means
binary.  It is true that for binary files you would want "-crlf", but
that is not the same thing.

We also have supported attribute macros and via that mechanism a handy
"binary" to specify "-crlf -diff" at the same time.  It was not documented
anywhere as far as I can tell, even though the support was there from
the very beginning.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 20:30:45 -07:00
Junio C Hamano
8fdcf31254 checkout: do not check out unmerged higher stages randomly
During a conflicted merge when you have unmerged stages for a
path F in the index, if you said:

    $ git checkout F

we rewrote F as many times as we have stages for it, and the
last one (typically "theirs") was left in the work tree, without
resolving the conflict.

This fixes it by noticing that a specified pathspec pattern
matches an unmerged path, and by erroring out.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 16:46:25 -07:00
Heikki Orsila
34baebcee1 Start conforming code to "git subcmd" style
User notifications are presented as 'git cmd', and code comments
are presented as '"cmd"' or 'git's cmd', rather than 'git-cmd'.

Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 13:50:48 -07:00
Junio C Hamano
ed0f47a8c4 git-apply: Loosen "match_beginning" logic
Even after a handfle attempts, match_beginning logic still has corner
cases:

    1bf1a85 (apply: treat EOF as proper context., 2006-05-23)
    65aadb9 (apply: force matching at the beginning., 2006-05-24)
    4be6096 (apply --unidiff-zero: loosen sanity checks ..., 2006-09-17)
    ee5a317 (Fix "git apply" to correctly enforce "match ..., 2008-04-06)

This is a tricky piece of code.

We still incorrectly enforce "match_beginning" for -U0 matches.
I noticed this while trying out an example sequence from Clemens Buchacher:

    $ echo a >victim
    $ git add victim
    $ echo b >>victim
    $ git diff -U0 >patch
    $ cat patch
    diff --git i/victim w/victim
    index 7898192..422c2b7 100644
    --- i/victim
    +++ w/victim
    @@ -1,0 +2 @@ a
    +b
    $ git apply --cached --unidiff-zero <patch
    $ git show :victim
    b
    a

The change inserts a new line before the second line, but we insist it to
be applied at the beginning.  As the result, the code refuses to apply it
at the original offset, and we end up adding the line at the beginning.

Updates to the test script are by Clemens Buchacher.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 13:23:02 -07:00
Junio C Hamano
ee837244df Fix example in git-name-rev documentation
Since 59d3f54 (name-rev: avoid "^0" when unneeded, 2007-02-20), name-rev
stopped showing an unnecessary "^0" to dereference a tag down to a commit.
The patch should have made a matching update to the documentation, but we
forgot.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-30 13:23:01 -07:00
Junio C Hamano
df85f7855d Merge branch 'sp/missing-thin-base' into maint
* sp/missing-thin-base:
  pack-objects: Allow missing base objects when creating thin packs
2008-08-30 08:38:19 -07:00
Junio C Hamano
014aff7c92 Merge branch 'af/maint-install-no-handlink' into maint
* af/maint-install-no-handlink:
  Fix use of hardlinks in "make install"
  Makefile: always provide a fallback when hardlinks fail
2008-08-29 22:39:25 -07:00
Junio C Hamano
6ffaecc7d8 shell: do not play duplicated definition games to shrink the executable
Playing with linker games to shrink git-shell did not go well with various
other platforms and compilers.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 22:38:41 -07:00
Alex Riesen
4e3ae59ef6 Fix use of hardlinks in "make install"
The code failed to filter-out git-add properly on platforms were $X is
not empty (ATM there is only one such a platform).

Than it tried to create a hardlink to the file ($execdir/git-add) it just
removed (because git-add is first in the BUILT_INS), so ln failed (but
because stderr was redirected into /dev/null the error was never seen), and
the whole install ended up using "ln -s" instead.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 22:37:04 -07:00
Nicolas Pitre
d35825da6d fixup_pack_header_footer(): use nicely aligned buffer sizes
It should be more efficient to use nicely aligned buffer sizes, either
for filesystem operations or SHA1 checksums.  Also, using a relatively
small nominal size might allow for the data to remain in L1 cache
between both SHA1_Update() calls.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 21:51:28 -07:00
Nicolas Pitre
8522148f79 index-pack: use fixup_pack_header_footer()'s validation mode
When completing a thin pack, a new header has to be written to
the pack and a new SHA1 computed.  Make sure that the SHA1 of what
is being read back matches the SHA1 of what was written for both:
the original pack and the appended objects.

To do so, a couple write_or_die() calls were converted to sha1write()
which has the advantage of doing some buffering as well as handling
SHA1 and CRC32 checksum already.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 21:51:28 -07:00
Nicolas Pitre
ac0463ed44 pack-objects: use fixup_pack_header_footer()'s validation mode
When limiting the pack size, a new header has to be written to the
pack and a new SHA1 computed.  Make sure that the SHA1 of what is being
read back matches the SHA1 of what was written.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 21:51:27 -07:00
Nicolas Pitre
abeb40e5aa improve reliability of fixup_pack_header_footer()
Currently, this function has the potential to read corrupted pack data
from disk and give it a valid SHA1 checksum.  Let's add the ability to
validate SHA1 checksum of existing data along the way, including before
and after any arbitrary point in the pack.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 21:51:27 -07:00
Nicolas Pitre
6ed7f25e95 pack-objects: improve returned information from write_one()
This function returns 0 when the current object couldn't be written
due to the pack size limit, otherwise the current offset in the pack.
There is a problem with this approach however, since current object
could be a delta and its delta base might just have been written in
the same write_one() call, but those successfully written objects are
not accounted in the offset variable tracked by the caller. Currently
this is not an issue but a subsequent patch will need this.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 21:51:27 -07:00
Junio C Hamano
d2b9dff8a0 Merge branch 'np/verify-pack' into maint
* np/verify-pack:
  discard revindex data when pack list changes
2008-08-29 21:48:02 -07:00
Paolo Ciarrocchi
53d1589ff6 tutorial: gentler illustration of Alice/Bob workflow using gitk
Update to gitutorial as discussedin the git mailing list:

http://marc.info/?t=121969390900002&r=1&w=2

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 00:14:30 -07:00
Jeff King
d36f8679e9 pretty=format: respect date format options
When running a command like:

  git log --pretty=format:%ad --date=short

the date option was ignored. This patch causes it to use whatever
format was specified by --date (or by --relative-date, etc), just
as the non-user formats would do.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 00:14:29 -07:00
Paolo Bonzini
0cfeed2e1d make git-shell paranoid about closed stdin/stdout/stderr
It is in general unsafe to start a program with one or more of file
descriptors 0/1/2 closed.  Karl Chen for example noticed that stat_command
does this in order to rename a pipe file descriptor to 0:

    dup2(from, 0);
    close(from);

... but if stdin was closed (for example) from == 0, so that

    dup2(0, 0);
    close(0);

just ends up closing the pipe.  Another extremely rare but nasty problem
would occur if an "important" file ends up in file descriptor 2, and is
corrupted by a call to die().

Fixing this in git was considered to be overkill, so this patch works
around it only for git-shell.  The fix is simply to open all the "low"
descriptors to /dev/null in main.

Signed-off-by: Paolo Bonzini <bonzini@gnu.org>
Acked-by: Stephen R. van den Berg <srb@cuci.nl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 00:14:29 -07:00
Yann Dirson
29f28151c5 Document gitk --argscmd flag.
This was part of my original patch, but appears to have been lost.

Signed-off-by: Yann Dirson <ydirson@altern.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 00:14:29 -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
Björn Steinbrink
114ef90854 for-each-ref: Allow a trailing slash in the patterns
More often than not, I end up using something like refs/remotes/ as the
pattern for for-each-ref, but that doesn't work, because it expects to see
the slash in the ref name right after the matched pattern. So teach it to
accept the slash as the final character in the pattern as well.

Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 00:14:06 -07:00
Nguyễn Thái Ngọc Duy
b6469a81d2 read-tree: setup worktree if merge is required
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-28 22:47:17 -07:00
Nguyễn Thái Ngọc Duy
6577f542b3 grep: fix worktree setup
Unless used with --cached or grepping on a tree, "git grep" will
search on working directory, so set up worktree properly

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-28 22:46:16 -07:00
Nguyễn Thái Ngọc Duy
4f38f6b5ba diff*: fix worktree setup
This fixes "git diff", "git diff-files" and "git diff-index" to work
correctly under worktree setup. Because diff* family works in many modes
and not all of them require worktree, Junio made a nice summary
(with a little modification from me):

 * diff-files is about comparing with work tree, so it obviously needs a
  work tree;

 * diff-index also does, except "diff-index --cached" or "diff --cached TREE"

 * no-index is about random files outside git context, so it obviously
   doesn't need any work tree;

 * comparing two (or more) trees doesn't;

 * comparing two blobs doesn't;

 * comparing a blob with a random file doesn't;

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-28 20:50:10 -07:00
Junio C Hamano
c67b1fa349 ctype.c: protect tiny C preprocessor constants
Some platforms contaminate the preprocessor token namespace with their own
definition of SS without being asked.  Avoid getting hit by redefinition
warning messages by explicitly undef SS, AA and DD shorthand we use in this
table definition.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-27 16:14:22 -07:00
Linus Torvalds
0c68d386da index-pack: be careful after fixing up the header/footer
The index-pack command, when processing a thin pack, fixed up the pack
after-the-fact.  It forgets to fsync the result, because it only did that
in one path rather in all cases of fixup.

This moves the fsync_or_die() to the fix-up routine itself, rather than
doing it in one of the callers, so that all cases are covered.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-27 13:33:56 -07:00
Nguyễn Thái Ngọc Duy
d0b92a3f6e index-pack: setup git repository
"git index-pack" is an independent command and does not setup git
repository while still need pack.indexversion. It may miss the
info if it is in a subdirectory of the repository.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-26 16:25:48 -07:00
Ramsay Jones
2b84373219 Suppress some bash redirection error messages
In particular, when testing if the filesystem allows tabs in
filenames, bash issues an error something like:

./t4016-diff-quote.sh: pathname	with HT: No such file or directory

which is caused by the failure of the (stdout) redirection,
since the file cannot be created. In order to suppress the
error message, you must redirect stderr to /dev/null, *before*
the stdout redirection on the command-line.

Also, remove a redundant filesystem check from the begining of
the t3902-quoted.sh test and standardise the "test skipped"
message to 'say' on exit.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-26 16:25:30 -07:00
Ramsay Jones
d47fb8b099 Fix a warning (on cygwin) to allow -Werror
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-26 16:22:00 -07:00
Andreas Färber
3e073dc561 Makefile: always provide a fallback when hardlinks fail
We make hardlinks from "git" to "git-<cmd>" built-ins and have been
careful to avoid cross-device links when linking "git-<cmd>" to
gitexecdir.

However, we were not prepared to deal with a build directory that is
incapable of making hard links within itself. This patch corrects it.

Instead of temporarily linking "git" to gitexecdir, directly link "git-
add", falling back to "cp". Try hardlinking that as "git-<cmd>", falling
back to symlinks or "cp" on error.

While at it, avoid 100+ error messages from hardlink failures when we are
going to fall back to symlinks or "cp" by redirecting the standard error
to /dev/null.

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-25 23:14:39 -07:00
Jeff King
0843acfd2c Fix "git log -i --grep"
This has been broken in v1.6.0 due to the reorganization of
the revision option parsing code. The "-i" is completely
ignored, but works fine in "git log --grep -i".

What happens is that the code for "-i" looks for
revs->grep_filter; if it is NULL, we do nothing, since there
are no grep filters. But that is obviously not correct,
since we want it to influence the later --grep option. Doing
it the other way around works, since "-i" just impacts the
existing grep_filter option.

Instead, we now always initialize the grep_filter member and
just fill in options and patterns as we get them. This means
that we can no longer check grep_filter for NULL, but
instead must check the pattern list to see if we have any
actual patterns.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-24 23:28:02 -07:00
Junio C Hamano
5760a6b094 GIT 1.6.0.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-24 14:47:24 -07:00
Junio C Hamano
fb70928079 Merge branch 'ag/maint-combine-diff-fix' into maint
* ag/maint-combine-diff-fix:
  Respect core.autocrlf in combined diff
2008-08-24 14:32:18 -07:00
Junio C Hamano
97e5f4908d Merge branch 'mv/maint-merge-fix' into maint
* mv/maint-merge-fix:
  merge: fix numerus bugs around "trivial merge" area
2008-08-24 14:29:37 -07:00
Jonathan Nieder
ab54cd6c4d Documentation: clarify pager configuration
The unwary user may not know how to disable the -FRSX options.

Signed-off-by: Jonathan Nieder <jrnieder@uchicago.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-24 12:04:14 -07:00
Jonathan Nieder
32818085ee Documentation: clarify pager.<cmd> configuration
It was not obvious from the text that pager.<cmd> is a boolean
setting.

While we're changing the description, make some other
improvements: lest we forget and fret, clarify that -p and
pager.<cmd> do not kick in when stdout is not a tty; point to
related core.pager and GIT_PAGER settings; use renamed --paginate
option.

Signed-off-by: Jonathan Nieder <jrnieder@uchicago.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-24 12:01:28 -07:00
Simon Hausmann
f5f7e4a18c Clean up the git-p4 documentation
This patch massages the documentation a bit for improved readability and cleans
it up from outdated options/commands.

Signed-off-by: Simon Hausmann <simon@lst.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-24 12:00:14 -07:00
Alexander Gavrilov
5e568f9e30 Respect core.autocrlf in combined diff
Fix git-diff to make it produce useful 3-way diffs for merge conflicts in
repositories with autocrlf enabled. Otherwise it always reports that the
whole file was changed, because it uses the contents from the working tree
without necessary conversion.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-23 23:59:20 -07:00
Miklos Vajna
7d77016327 Makefile: enable SNPRINTF_RETURNS_BOGUS for HP-UX
In 81cc66a, customization has been added to Makefile for supporting
HP-UX, but git commit is still problematic. This should fix the issue.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Acked-by: Robert Schiele <rschiele@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-23 21:53:35 -07:00
Junio C Hamano
446247db78 merge: fix numerus bugs around "trivial merge" area
The "trivial merge" codepath wants to optimize itself by making an
internal call to the read-tree machinery, but it does not read the index
before doing so, and the codepath is never exercised.  Incidentally, this
failure to read the index upfront means that the safety to refuse doing
anything when the index is unmerged does not kick in, either.

These two problem are fixed by using read_cache_unmerged() that does read
the index before checking if it is unmerged at the beginning of
cmd_merge().

The primary logic of the merge, however, assumes that the process never
reads the index in-core, and the call to write_cache_as_tree() it makes
from write_tree_trivial() will always read from the on-disk index that is
prepared the strategy back-ends.  This assumption is now broken by the
above fix.  To fix this issue, we now call discard_cache() before calling
write_tree_trivial() when it wants to write the on-disk index as a tree.

When multiple strategies are tried, their results are evaluated by reading
the resulting index and inspecting it.  The codepath needs to make a call
to read_cache() for each successful strategy, and for that to work, they
need to discard_cache() the one read by the previous round.

Also the "trivial merge" forgot that the current commit is one of the
parents of the resulting commit.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-23 18:17:22 -07:00
Junio C Hamano
913e0e99b6 unpack_trees(): protect the handcrafted in-core index from read_cache()
unpack_trees() rebuilds the in-core index from scratch by allocating a new
structure and finishing it off by copying the built one to the final
index.

The resulting in-core index is Ok for most use, but read_cache() does not
recognize it as such.  The function is meant to be no-op if you already
have loaded the index, until you call discard_cache().

This change the way read_cache() detects an already initialized in-core
index, by introducing an extra bit, and marks the handcrafted in-core
index as initialized, to avoid this problem.

A better fix in the longer term would be to change the read_cache() API so
that it will always discard and re-read from the on-disk index to avoid
confusion.  But there are higher level API that have relied on the current
semantics, and they and their users all need to get converted, which is
outside the scope of 'maint' track.

An example of such a higher level API is write_cache_as_tree(), which is
used by git-write-tree as well as later Porcelains like git-merge, revert
and cherry-pick.  In the longer term, we should remove read_cache() from
there and add one to cmd_write_tree(); other callers expect that the
in-core index they prepared is what gets written as a tree so no other
change is necessary for this particular codepath.

The original version of this patch marked the index by pointing an
otherwise wasted malloc'ed memory with o->result.alloc, but this version
uses Linus's idea to use a new "initialized" bit, which is conceptually
much cleaner.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-23 18:09:27 -07:00
Tor Arvid Lund
893d340f2c git-p4: Fix one-liner in p4_write_pipe function.
The function built a p4 command string via the p4_build_cmd function, but
ignored the result.

Signed-off-by: Tor Arvid Lund <torarvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-22 22:40:13 -07:00