gitweb.git
Documentation/git-tag.txt: Document how to backdate... Michael Olson Mon, 15 Oct 2007 17:51:30 +0000 (13:51 -0400)

Documentation/git-tag.txt: Document how to backdate tags

Added a new section beneath "On Automatic following" called "On
Backdating Tags". This includes an explanation of when to use this
method, a brief explanation of the kind of date that can be used in
GIT_AUTHOR_DATE, and an example invocation of git-tag using a custom
setting of GIT_AUTHOR_DATE.

[sp: Corrected s/you/your/, noticed by Jeff King]

Signed-off-by: Michael W. Olson <mwolson@gnu.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-rebase--interactive.sh: Quote arguments to testMichael W. Olson Mon, 15 Oct 2007 17:48:27 +0000 (13:48 -0400)

git-rebase--interactive.sh: Quote arguments to test

If /bin/sh is /bin/dash, then the script will display an error if
$parent_sha1 is undefined. This patch works fixes the issue by
quoting both arguments to `test'. Arguments composed solely of
variable expansions should always be quoted, unless we know for
certain that the contents are defined.

Signed-off-by: Michael W. Olson <mwolson@gnu.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Merge branch 'maint'Shawn O. Pearce Tue, 16 Oct 2007 02:31:47 +0000 (22:31 -0400)

Merge branch 'maint'

* maint:
Whip post 1.5.3.4 maintenance series into shape.
rebase -i: use diff plumbing instead of porcelain
Do not remove distributed configure script
git-archive: document --exec
git-reflog: document --verbose
git-config: handle --file option with relative pathname properly
clear_commit_marks(): avoid deep recursion
git add -i: Remove unused variables
git add -i: Fix parsing of abbreviated hunk headers
git-config: don't silently ignore options after --list
Clean up "git log" format with DIFF_FORMAT_NO_OUTPUT
Fix embarrassing "git log --follow" bug

Conflicts:

RelNotes
git-rebase--interactive.sh

Whip post 1.5.3.4 maintenance series into shape.Shawn O. Pearce Tue, 16 Oct 2007 02:29:50 +0000 (22:29 -0400)

Whip post 1.5.3.4 maintenance series into shape.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Minor usage update in setgitperms.perlJosh England Tue, 9 Oct 2007 16:04:42 +0000 (10:04 -0600)

Minor usage update in setgitperms.perl

Signed-off-by: Josh England <jjengla@sandia.gov>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

manual: use 'URL' instead of 'url'.Ralf Wildenhues Tue, 9 Oct 2007 21:03:55 +0000 (23:03 +0200)

manual: use 'URL' instead of 'url'.

Just for consistency, use the spelling URL everywhere.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

manual: add some markup.Ralf Wildenhues Tue, 9 Oct 2007 21:03:11 +0000 (23:03 +0200)

manual: add some markup.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

manual: Fix example finding commits referencing given... Ralf Wildenhues Tue, 9 Oct 2007 21:02:19 +0000 (23:02 +0200)

manual: Fix example finding commits referencing given content.

If I'm handed a file, then it typically lives outside the
working directory. git-log only operates on in-tree files,
so the first 'filename' should be an in-tree one, or it should
look at all files. This patch does the latter, so it would
also find renamed files. However, it is also slower.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Fix wording in push definition.Ralf Wildenhues Tue, 9 Oct 2007 21:01:05 +0000 (23:01 +0200)

Fix wording in push definition.

Make the definition of push in the glossary readable.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Fix some typos, punctuation, missing words, minor markup.Ralf Wildenhues Tue, 9 Oct 2007 21:00:03 +0000 (23:00 +0200)

Fix some typos, punctuation, missing words, minor markup.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

manual: Fix or remove em dashes.Ralf Wildenhues Tue, 9 Oct 2007 21:05:30 +0000 (23:05 +0200)

manual: Fix or remove em dashes.

em dashes were used inconsistently in the manual.
This changes them to the way they are used in US English.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Add a --dry-run option to git-push.Brian Ewins Thu, 11 Oct 2007 19:32:27 +0000 (20:32 +0100)

Add a --dry-run option to git-push.

The default behaviour of git-push is potentially confusing
for new users, since it will push changes that are not on
the current branch. Publishing patches that were still
cooking on a development branch is hard to undo.

It would also be nice to be able to verify the expansion
of refspecs if you've edited them, so that you know
what branches matched on the server.

Adding a --dry-run flag allows the user to experiment
safely and learn how to use git-push properly. Originally
suggested by Steffen Prohaska.

Signed-off-by: Brian Ewins <brian.ewins@gmail.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Add a --dry-run option to git-send-pack.Brian Ewins Thu, 11 Oct 2007 19:32:26 +0000 (20:32 +0100)

Add a --dry-run option to git-send-pack.

Implement support for --dry-run, so that it can be used
in calls from git-push. With this flag set, git-send-pack
will not send any updates to the server.

Signed-off-by: Brian Ewins <brian.ewins@gmail.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Fix in-place editing functions in convert.cPierre Habouzit Fri, 5 Oct 2007 08:11:59 +0000 (10:11 +0200)

Fix in-place editing functions in convert.c

* crlf_to_git and ident_to_git:

Don't grow the buffer if there is enough space in the first place.
As a side effect, when the editing is done "in place", we don't grow, so
the buffer pointer doesn't changes, and `src' isn't invalidated anymore.

Thanks to Bernt Hansen for the bug report.

* apply_filter:

Fix memory leak due to fake in-place editing that didn't collected the
old buffer when the filter succeeds. Also a cosmetic fix.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

instaweb: support for Ruby's WEBrick serverMike Dalessio Sat, 6 Oct 2007 17:29:49 +0000 (13:29 -0400)

instaweb: support for Ruby's WEBrick server

running the webrick server with git requires Ruby and Ruby's YAML and
Webrick libraries (both of which come standard with Ruby). nice for
single-user standalone invocations.

the --httpd=webrick option generates a ruby script on the fly to read
httpd.conf options and invoke the web server via library call. this
script is placed in the .git/gitweb directory. it also generates a
shell script in a feeble attempt to invoke ruby in a portable manner,
which assumes that 'ruby' is in the user's $PATH.

Signed-off-by: Mike Dalessio <mike@csa.net>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

instaweb: allow for use of auto-generated scriptsMike Dalessio Sat, 6 Oct 2007 17:29:48 +0000 (13:29 -0400)

instaweb: allow for use of auto-generated scripts

this patch allows scripts that reside in $fqgitdir/gitweb to be used
for firing up an instaweb server. this lays the groundwork for
extending instaweb support to non-standard web servers, which may
require a script for proper invocation.

Signed-off-by: Mike Dalessio <mike@csa.net>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Add 'git-p4 commit' as an alias for 'git-p4 submit'Marius Storm-Olsen Tue, 9 Oct 2007 14:16:09 +0000 (16:16 +0200)

Add 'git-p4 commit' as an alias for 'git-p4 submit'

Given that git uses 'commit', git-p4's 'sumbit' was a bit confusing at times;
often making me do 'git submit' and 'git-p4 commit' instead.

Signed-off-by: Marius Storm-Olsen <marius@trolltech.com>
Acked-By: Simon Hausmann <simon@lst.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

hg-to-git speedup through selectable repack intervalsMichael Gebetsroither Sat, 6 Oct 2007 21:16:51 +0000 (23:16 +0200)

hg-to-git speedup through selectable repack intervals

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-svn: respect Subversion's [auth] section configurat... Eygene Ryabinkin Sat, 6 Oct 2007 18:57:19 +0000 (22:57 +0400)

git-svn: respect Subversion's [auth] section configuration values

Parameters 'store-passwords' and 'store-auth-creds' from Subversion's
configuration (~/.subversion/config) were not respected. This was
fixed: the default values for these parameters are set to 'yes' to
follow Subversion behaviour.

Signed-off-by: Eygene Ryabinkin <rea-git@codelabs.ru>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Acked-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

gtksourceview2 support for gitviewFrederick Akalin Fri, 5 Oct 2007 07:20:49 +0000 (00:20 -0700)

gtksourceview2 support for gitview

Added support for gtksourceview2 module (pygtksourceview 1.90.x) in
gitview. Also refactored code that creates the source buffer and view.

Signed-off-by: Frederick Akalin <akalin@akalin.cx>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

fix contrib/hooks/post-receive-email hooks.recipients... Jeff Muizelaar Thu, 11 Oct 2007 21:49:21 +0000 (17:49 -0400)

fix contrib/hooks/post-receive-email hooks.recipients error message

Have the error message for missing recipients actually report the
missing config variable and not a fictional one.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Support cvs via git-shellJohannes Schindelin Tue, 9 Oct 2007 14:33:25 +0000 (15:33 +0100)

Support cvs via git-shell

This adds cvs support to the git-shell; You can now give new users
a restricted git-shell and they still can commit via git's cvs
emulator.

Note that either the gecos information must be accurate, or you must
provide a $HOME/.gitconfig with the appropriate user credentials.
Since the git-shell is too restricted to allow the user to do it
(on purpose!), it is up to the administrator to take care of that.

Based on an idea by Jan Wielemaker.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

rebase -i: use diff plumbing instead of porcelainJohannes Schindelin Tue, 9 Oct 2007 12:59:43 +0000 (13:59 +0100)

rebase -i: use diff plumbing instead of porcelain

When diff drivers are installed, calling "git diff <tree1>..<tree2>"
calls those drivers. This borks the patch generation of rebase -i.
So use "git diff-tree -p" instead, which does not call diff drivers.

Noticed by Johannes Sixt.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Do not remove distributed configure scriptMathias Megyei Thu, 4 Oct 2007 21:49:19 +0000 (23:49 +0200)

Do not remove distributed configure script

Before this patch the clean target has removed the
configure script that comes with Git tar file.
That made compiling Git for different architectures
inconvenient.
This patch excludes configure from the files to be
deleted by 'make clean' and adds new target 'distclean'
to preserve old functionality.

Signed-off-by: Mathias Megyei <mathias@mnet-mail.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-archive: document --execMichele Ballabio Thu, 4 Oct 2007 22:41:11 +0000 (00:41 +0200)

git-archive: document --exec

Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-reflog: document --verboseMichele Ballabio Thu, 4 Oct 2007 12:26:54 +0000 (14:26 +0200)

git-reflog: document --verbose

Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

makefile: Add a cscope targetKristof Provost Sat, 6 Oct 2007 14:24:42 +0000 (16:24 +0200)

makefile: Add a cscope target

The current makefile supports ctags but not cscope. Some people prefer
cscope (I do), so this patch adds a cscope target.

I've also added cscope* to the .gitignore file. For some reason tags
and TAGS weren't in there either so I've added them too.

Signed-off-by: Kristof Provost <Kristof@provost-engineering.be>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-config: handle --file option with relative pathname... Gerrit Pape Fri, 12 Oct 2007 11:32:51 +0000 (11:32 +0000)

git-config: handle --file option with relative pathname properly

When calling git-config not from the top level directory of a repository,
it changes directory before trying to open the config file specified
through the --file option, which then fails if the config file was
specified by a relative pathname. This patch adjusts the pathname to
the config file if applicable.

The problem was noticed by Joey Hess, reported through
http://bugs.debian.org/445208

Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

clear_commit_marks(): avoid deep recursionJohannes Schindelin Wed, 10 Oct 2007 22:14:35 +0000 (23:14 +0100)

clear_commit_marks(): avoid deep recursion

Before this patch, clear_commit_marks() recursed for each parent. This
could be potentially very expensive in terms of stack space. Probably
the only reason that this did not lead to problems is the fact that we
typically call clear_commit_marks() after marking a relatively small set
of commits.

Use (sort of) a tail recursion instead: first recurse on the parents
other than the first one, and then continue the loop with the first
parent.

Noticed by Shawn Pearce.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git add -i: Remove unused variablesJean-Luc Herren Tue, 9 Oct 2007 19:34:17 +0000 (21:34 +0200)

git add -i: Remove unused variables

Signed-off-by: Jean-Luc Herren <jlh@gmx.ch>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git add -i: Fix parsing of abbreviated hunk headersJean-Luc Herren Tue, 9 Oct 2007 19:29:26 +0000 (21:29 +0200)

git add -i: Fix parsing of abbreviated hunk headers

The unified diff format allows one-line ranges to be abbreviated
by omiting the size. The hunk header "@@ -10,1 +10,1 @@" can be
expressed as "@@ -10 +10 @@", but this wasn't properly parsed in
all cases.

Such abbreviated hunk headers are generated when a one-line change
(add, remove or modify) appears without context; for example
because the file is a one-liner itself or because GIT_DIFF_OPTS
was set to '-u0'. If the user then runs 'git add -i' and enters
the 'patch' command for that file, perl complains about undefined
variables.

Signed-off-by: Jean-Luc Herren <jlh@gmx.ch>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-config: don't silently ignore options after --listFrank Lichtenheld Fri, 5 Oct 2007 20:16:44 +0000 (22:16 +0200)

git-config: don't silently ignore options after --list

Error out if someone gives options after --list since that is
not a valid syntax.

Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-gc --auto: simplify "repack" command line buildingBrandon Casey Thu, 11 Oct 2007 01:00:27 +0000 (20:00 -0500)

git-gc --auto: simplify "repack" command line building

Since "-a" is removed from the base repack command line,
we can simplify how we add additional options to this
command line when using --auto.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

git-gc: by default use safer "-A" option to repack... Brandon Casey Thu, 11 Oct 2007 00:59:19 +0000 (19:59 -0500)

git-gc: by default use safer "-A" option to repack when not --prune'ing

This makes use of repack's new "-A" option which does not drop packed
unreachable objects. This makes git-gc safe to call at any time,
particularly when a repository is referenced as an alternate by
another repository.

git-gc --prune will use the "-a" option to repack instead of "-A", so
that packed unreachable objects will be removed.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

fix t5403-post-checkout-hook.sh: built-in test in dash... Alex Riesen Thu, 4 Oct 2007 13:32:53 +0000 (15:32 +0200)

fix t5403-post-checkout-hook.sh: built-in test in dash does not have "=="

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Clean up "git log" format with DIFF_FORMAT_NO_OUTPUTLinus Torvalds Tue, 9 Oct 2007 16:35:22 +0000 (09:35 -0700)

Clean up "git log" format with DIFF_FORMAT_NO_OUTPUT

This fixes an unnecessary empty line that we add to the log message when
we generate diffs, but don't actually end up printing any due to having
DIFF_FORMAT_NO_OUTPUT set.

This can happen with pickaxe or with rename following. The reason is that
we normally add an empty line between the commit and the diff, but we do
that even for the case where we've then suppressed the actual printing of
the diff.

This also updates a couple of tests that assumed the extraneous empty
line would exist at the end of output.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Fix embarrassing "git log --follow" bugLinus Torvalds Mon, 8 Oct 2007 20:42:41 +0000 (13:42 -0700)

Fix embarrassing "git log --follow" bug

It turns out that I completely broke "git log --follow" with my recent
patch to revision.c ("Fix revision log diff setup, avoid unnecessary diff
generation", commit b7bb760d5ed4881422673d32f869d140221d3564).

Why? Because --follow obviously requires the diff machinery to function,
exactly the same way pickaxe does.

So everybody is away right now, but considering that nobody even noticed
this bug, I don't think it matters. But for the record, here's the trivial
one-liner fix (well, two, since I also fixed the comment).

Because of the nature of the bug, if you ask for patches when following
(which is one of the things I normally do), the bug is hidden, because
then the request for diff output will automatically also enable the diffs
themselves.

So while "git log --follow <filename>" didn't work, adding a "-p"
magically made it work again even without this fix.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Update state documentation link for 1.5.3.4Junio C Hamano Thu, 4 Oct 2007 08:35:01 +0000 (01:35 -0700)

Update state documentation link for 1.5.3.4

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Don't checkout the full tree if avoidableSteven Walter Fri, 28 Sep 2007 17:24:19 +0000 (13:24 -0400)

Don't checkout the full tree if avoidable

In most cases of branching, the tree is copied unmodified from the trunk
to the branch. When that is done, we can simply start with the parent's
index and apply the changes on the branch as usual.

[ew: rewritten from Steven's original to use SVN::Client instead
of the command-line svn client.

Since SVN::Client connects separately, we'll share our
authentication providers array between our usages of
SVN::Client and SVN::Ra, too. Bypassing the high-level
SVN::Client library can avoid this, but the code will be
much more complex. Regardless, any implementation of this
seems to require restarting a connection to the remote
server.

Also of note is that SVN 1.4 and later allows a more
efficient diff_summary to be done instead of a full diff,
but since this code is only to support SVN < 1.4.4, we'll
ignore it for now.]

Signed-off-by: Steven Walter <stevenrwalter@gmail.com>
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-apply: fix conversion error in strbuf seriesJunio C Hamano Thu, 4 Oct 2007 00:42:52 +0000 (17:42 -0700)

builtin-apply: fix conversion error in strbuf series

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'mv/unknown'Junio C Hamano Wed, 3 Oct 2007 11:28:24 +0000 (04:28 -0700)

Merge branch 'mv/unknown'

* mv/unknown:
Don't use "<unknown>" for placeholders and suppress printing of empty user formats.

Merge branch 'ph/strbuf'Junio C Hamano Wed, 3 Oct 2007 10:06:02 +0000 (03:06 -0700)

Merge branch 'ph/strbuf'

* ph/strbuf: (44 commits)
Make read_patch_file work on a strbuf.
strbuf_read_file enhancement, and use it.
strbuf change: be sure ->buf is never ever NULL.
double free in builtin-update-index.c
Clean up stripspace a bit, use strbuf even more.
Add strbuf_read_file().
rerere: Fix use of an empty strbuf.buf
Small cache_tree_write refactor.
Make builtin-rerere use of strbuf nicer and more efficient.
Add strbuf_cmp.
strbuf_setlen(): do not barf on setting length of an empty buffer to 0
sq_quote_argv and add_to_string rework with strbuf's.
Full rework of quote_c_style and write_name_quoted.
Rework unquote_c_style to work on a strbuf.
strbuf API additions and enhancements.
nfv?asprintf are broken without va_copy, workaround them.
Fix the expansion pattern of the pseudo-static path buffer.
builtin-for-each-ref.c::copy_name() - do not overstep the buffer.
builtin-apply.c: fix a tiny leak introduced during xmemdupz() conversion.
Use xmemdupz() in many places.
...

Merge branch 'lh/merge'Junio C Hamano Wed, 3 Oct 2007 10:05:58 +0000 (03:05 -0700)

Merge branch 'lh/merge'

* lh/merge:
git-merge: add --ff and --no-ff options
git-merge: add support for --commit and --no-squash
git-merge: add support for branch.<name>.mergeoptions
git-merge: refactor option parsing
git-merge: fix faulty SQUASH_MSG
Add test-script for git-merge porcelain

Merge branch 'js/rebase-i'Junio C Hamano Wed, 3 Oct 2007 10:05:39 +0000 (03:05 -0700)

Merge branch 'js/rebase-i'

* js/rebase-i:
rebase -i: work on a detached HEAD

Merge branch 'jc/autogc'Junio C Hamano Wed, 3 Oct 2007 10:05:32 +0000 (03:05 -0700)

Merge branch 'jc/autogc'

* jc/autogc:
git-gc --auto: run "repack -A -d -l" as necessary.
git-gc --auto: restructure the way "repack" command line is built.
git-gc --auto: protect ourselves from accumulated cruft
git-gc --auto: add documentation.
git-gc --auto: move threshold check to need_to_gc() function.
repack -A -d: use --keep-unreachable when repacking
pack-objects --keep-unreachable
Export matches_pack_name() and fix its return value
Invoke "git gc --auto" from commit, merge, am and rebase.
Implement git gc --auto

Merge branch 'je/hooks'Junio C Hamano Wed, 3 Oct 2007 10:03:40 +0000 (03:03 -0700)

Merge branch 'je/hooks'

* je/hooks:
post-checkout hook, tests, and docs

Merge branch 'ap/dateformat'Junio C Hamano Wed, 3 Oct 2007 10:03:22 +0000 (03:03 -0700)

Merge branch 'ap/dateformat'

* ap/dateformat:
Add a test script for for-each-ref, including test of date formatting
dateformat: parse %(xxdate) %(yydate:format) correctly
Make for-each-ref's grab_date() support per-atom formatting
Make for-each-ref allow atom names like "<name>:<something>"
parse_date_format(): convert a format name to an enum date_mode

Sync with GIT 1.5.3.4Junio C Hamano Wed, 3 Oct 2007 10:03:15 +0000 (03:03 -0700)

Sync with GIT 1.5.3.4

Signed-off-by: Junio C Hamano <gitster@pobox.com>

GIT 1.5.3.4 v1.5.3.4Junio C Hamano Wed, 3 Oct 2007 09:33:11 +0000 (02:33 -0700)

GIT 1.5.3.4

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Add a test script for for-each-ref, including test... Andy Parkins Tue, 2 Oct 2007 11:02:57 +0000 (12:02 +0100)

Add a test script for for-each-ref, including test of date formatting

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Add test case for ls-files --with-treeCarl Worth Wed, 3 Oct 2007 07:03:53 +0000 (00:03 -0700)

Add test case for ls-files --with-tree

This tests basic functionality and also exercises a bug noticed
by Keith Packard, (prune_cache followed by add_index_entry can
trigger an attempt to realloc a pointer into the middle of an
allocated buffer).

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Must not modify the_index.cache as it may be passed... Keith Packard Wed, 3 Oct 2007 05:44:15 +0000 (22:44 -0700)

Must not modify the_index.cache as it may be passed to realloc at some point.

The index cache is not static, growing as new entries are added. If
entries are added after prune_cache is called, cache will no longer
point at the base of the allocation, and realloc will not be happy.

I verified that this was the only place in the current source which
modified any index_state.cache elements aside from the alloc/realloc
calls in read-cache by changing the type of the element to 'struct
cache_entry ** const cache' and recompiling.

A more efficient patch would create a separate 'cache_base' value to
track the allocation and then fix things up when reallocation was
necessary, instead of the brute-force memmove used here.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

the ar tool is called gar on some systemsRobert Schiele Wed, 3 Oct 2007 01:49:34 +0000 (03:49 +0200)

the ar tool is called gar on some systems

Some systems that have only installed the GNU toolchain (prefixed with "g")
do not provide "ar" but only "gar". Make configure find this tool as well.

Signed-off-by: Robert Schiele <rschiele@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

rename diff_free_filespec_data_large() to diff_free_fil... Junio C Hamano Wed, 3 Oct 2007 04:01:03 +0000 (21:01 -0700)

rename diff_free_filespec_data_large() to diff_free_filespec_blob()

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diffcore-rename: cache file deltasJeff King Tue, 25 Sep 2007 19:29:42 +0000 (15:29 -0400)

diffcore-rename: cache file deltas

We find rename candidates by computing a fingerprint hash of
each file, and then comparing those fingerprints. There are
inherently O(n^2) comparisons, so it pays in CPU time to
hoist the (rather expensive) computation of the fingerprint
out of that loop (or to cache it once we have computed it once).

Previously, we didn't keep the filespec information around
because then we had the potential to consume a great deal of
memory. However, instead of keeping all of the filespec
data, we can instead just keep the fingerprint.

This patch implements and uses diff_free_filespec_data_large
to accomplish that goal. We also have to change
estimate_similarity not to needlessly repopulate the
filespec data when we already have the hash.

Practical tests showed 4.5x speedup for a 10% memory usage
increase.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Mention 'cpio' dependency in INSTALLJohan Herland Tue, 2 Oct 2007 23:42:29 +0000 (01:42 +0200)

Mention 'cpio' dependency in INSTALL

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Make git-pull complain and give advice when there is... Federico Mena Quintero Tue, 2 Oct 2007 23:36:30 +0000 (18:36 -0500)

Make git-pull complain and give advice when there is nothing to merge with

Signed-off-by: Federico Mena Quintero <federico@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Note that git-branch will not automatically checkout... Federico Mena Quintero Tue, 2 Oct 2007 23:34:32 +0000 (18:34 -0500)

Note that git-branch will not automatically checkout the new branch

Signed-off-by: Federico Mena Quintero <federico@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Add documentation for --track and --no-track to the... Federico Mena Quintero Tue, 2 Oct 2007 23:33:30 +0000 (18:33 -0500)

Add documentation for --track and --no-track to the git-branch docs.

Signed-off-by: Federico Mena Quintero <federico@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Say when --track is useful in the git-checkout docs.Federico Mena Quintero Tue, 2 Oct 2007 23:32:32 +0000 (18:32 -0500)

Say when --track is useful in the git-checkout docs.

The documentation used to say what the option does, but it
didn't mention a use case.

Signed-off-by: Federico Mena Quintero <federico@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Fix typo in config.txtJohannes Schindelin Tue, 2 Oct 2007 20:14:30 +0000 (21:14 +0100)

Fix typo in config.txt

There was an 'l' (ell) instead of a '1' (one) in one of the gitlinks.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

for-each-ref: fix %(numparent) and %(parent)Junio C Hamano Tue, 2 Oct 2007 22:09:41 +0000 (15:09 -0700)

for-each-ref: fix %(numparent) and %(parent)

The string value of %(numparent) was not returned correctly.
Also %(parent) misbehaved for the root commits (returned garbage)
and merge commits (returned first parent, followed by a space).

Signed-off-by: Junio C Hamano <gitster@pobox.com>

dateformat: parse %(xxdate) %(yydate:format) correctlyJunio C Hamano Tue, 2 Oct 2007 21:31:37 +0000 (14:31 -0700)

dateformat: parse %(xxdate) %(yydate:format) correctly

Andy Parkins noticed that parsing of the above would not
correctly notice that xxdate does not have any format
specifier.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-commit: initialize TMP_INDEX just to be sure.Junio C Hamano Tue, 2 Oct 2007 18:47:58 +0000 (11:47 -0700)

git-commit: initialize TMP_INDEX just to be sure.

We rely on TMP_INDEX variable to decide if we are doing a partial commit,
as it is only set in the partial commit codepath. But the variable is
never initialized. A stray environment variable from outside could
ruin the day.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

fixed link in documentation of diff-optionsSteffen Prohaska Tue, 2 Oct 2007 06:14:37 +0000 (08:14 +0200)

fixed link in documentation of diff-options

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'maint'Junio C Hamano Mon, 1 Oct 2007 09:09:09 +0000 (02:09 -0700)

Merge branch 'maint'

* maint:
Whip post 1.5.3.3 maintenance series into shape.
git stash: document apply's --index switch
post-receive-hook: Remove the From field from the generated email header so that the pusher's name is used

Whip post 1.5.3.3 maintenance series into shape.Junio C Hamano Mon, 1 Oct 2007 09:07:47 +0000 (02:07 -0700)

Whip post 1.5.3.3 maintenance series into shape.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

git stash: document apply's --index switchMiklos Vajna Sun, 30 Sep 2007 22:30:27 +0000 (00:30 +0200)

git stash: document apply's --index switch

Signed-off-by: Junio C Hamano <gitster@pobox.com>

post-receive-hook: Remove the From field from the gener... Andy Parkins Fri, 28 Sep 2007 14:24:26 +0000 (15:24 +0100)

post-receive-hook: Remove the From field from the generated email header so that the pusher's name is used

Using the name of the committer of the revision at the tip of the
updated ref is not sensible. That information is available in the email
itself should it be wanted, and by supplying a "From", we were
effectively hiding the person who performed the push - which is useful
information in itself.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Update stale documentation link in the k.org siteJunio C Hamano Mon, 1 Oct 2007 00:32:25 +0000 (17:32 -0700)

Update stale documentation link in the k.org site

Signed-off-by: Junio C Hamano <gitster@pobox.com>

git.el: Reset the permission flags when changing a... Alexandre Julliard Sat, 29 Sep 2007 09:59:32 +0000 (11:59 +0200)

git.el: Reset the permission flags when changing a file state.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git.el: Update a file status in the git buffer upon... Alexandre Julliard Sat, 29 Sep 2007 09:59:07 +0000 (11:59 +0200)

git.el: Update a file status in the git buffer upon save.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git.el: Do not print a status message on every git... Alexandre Julliard Sat, 29 Sep 2007 09:58:39 +0000 (11:58 +0200)

git.el: Do not print a status message on every git command.

Instead print a single message around sequences of commands that can
potentially take some time.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git.el: Preserve file marks when doing a full refresh.Alexandre Julliard Sat, 29 Sep 2007 09:58:08 +0000 (11:58 +0200)

git.el: Preserve file marks when doing a full refresh.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Fix adding a submodule with a remote urlDaniel Barkalow Sat, 29 Sep 2007 23:39:54 +0000 (19:39 -0400)

Fix adding a submodule with a remote url

Without this, a non-path URL gets lost before the clone.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-remote: exit with non-zero status after detecting... Jari Aalto Sun, 30 Sep 2007 06:34:19 +0000 (23:34 -0700)

git-remote: exit with non-zero status after detecting error in "rm".

Exit with non-zero status when "git remote rm" was told to
remove a non-existing remote.

Signed-off-by: Jari Aalto <jari.aalto@cante.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'maint'Junio C Hamano Sun, 30 Sep 2007 06:32:36 +0000 (23:32 -0700)

Merge branch 'maint'

* maint:
git-remote: exit with non-zero status after detecting errors.
rebase -i: squash should retain the authorship of the _first_ commit
git-add--interactive: Improve behavior on bogus input
git-add--interactive: Allow Ctrl-D to exit

git-remote: exit with non-zero status after detecting... Jari Aalto Sun, 30 Sep 2007 06:29:43 +0000 (23:29 -0700)

git-remote: exit with non-zero status after detecting errors.

Some subcommands of "git-remote" detected and issued error
messages but did not signal that to the calling process with
exit status.

Signed-off-by: Jari Aalto <jari.aalto@cante.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

rebase -i: squash should retain the authorship of the... Johannes Schindelin Sat, 29 Sep 2007 23:34:23 +0000 (00:34 +0100)

rebase -i: squash should retain the authorship of the _first_ commit

It was determined on the mailing list, that it makes more sense for a
"squash" to keep the author of the first commit as the author for the
result of the squash.

Make it so.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

rebase -i: support single-letter abbreviations for... Johannes Schindelin Sat, 29 Sep 2007 02:32:11 +0000 (03:32 +0100)

rebase -i: support single-letter abbreviations for the actions

When you do many rebases, you can get annoyed by having to type out
the actions "edit" or "squash" in total.

This commit helps that, by allowing you to enter "e" instead of "edit",
"p" instead of "pick", or "s" instead of "squash".

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-add--interactive: Improve behavior on bogus inputJean-Luc Herren Wed, 26 Sep 2007 14:05:01 +0000 (16:05 +0200)

git-add--interactive: Improve behavior on bogus input

1) Previously, any menu would cause a perl error when entered '0',
which is never a valid option.

2) Entering a bogus choice (like 998 or 4-2) surprisingly caused
the same behavior as if the user had just hit 'enter', which
means to carry out the selected action on the selected items.
Entering such bogus input is now a no-op and the sub-menu
doesn't exit.

Signed-off-by: Jean-Luc Herren <jlh@gmx.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-add--interactive: Allow Ctrl-D to exitJean-Luc Herren Wed, 26 Sep 2007 13:56:19 +0000 (15:56 +0200)

git-add--interactive: Allow Ctrl-D to exit

Hitting Ctrl-D (EOF) is a common way to exit shell-like tools.
When in a sub-menu it will still behave as if an empty line had
been entered, carrying out the action on the selected items and
returning to the previous menu.

Signed-off-by: Jean-Luc Herren <jlh@gmx.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Make read_patch_file work on a strbuf.Pierre Habouzit Thu, 27 Sep 2007 11:33:19 +0000 (13:33 +0200)

Make read_patch_file work on a strbuf.

So that we don't need to use strbuf_detach.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

strbuf_read_file enhancement, and use it.Pierre Habouzit Thu, 27 Sep 2007 13:25:55 +0000 (15:25 +0200)

strbuf_read_file enhancement, and use it.

* make strbuf_read_file take a size hint (works like strbuf_read)
* use it in a couple of places.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

post-checkout hook, tests, and docsJosh England Wed, 26 Sep 2007 21:31:01 +0000 (15:31 -0600)

post-checkout hook, tests, and docs

Updated post-checkout hook to take a flag specifying whether the checkout is
a branch checkout or a file checkout (from the index).

Signed-off-by: Josh England <jjengla@sandia.gov>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Make for-each-ref's grab_date() support per-atom formattingAndy Parkins Fri, 28 Sep 2007 14:17:45 +0000 (15:17 +0100)

Make for-each-ref's grab_date() support per-atom formatting

grab_date() gets an extra parameter - atomname; this extra parameter is
checked to see if it has a ":<format>" extra component in it, and if so
that "<format>" string is passed to parse_date_format() to produce an
enum date_mode value which is then further passed to show_date().

In short it allows the user of git-for-each-ref to do things like this:

$ git-for-each-ref --format='%(taggerdate:default)' refs/tags/v1.5.2
Sun May 20 00:30:42 2007 -0700
$ git-for-each-ref --format='%(taggerdate:relative)' refs/tags/v1.5.2
4 months ago
$ git-for-each-ref --format='%(taggerdate:short)' refs/tags/v1.5.2
2007-05-20
$ git-for-each-ref --format='%(taggerdate:local)' refs/tags/v1.5.2
Sun May 20 08:30:42 2007
$ git-for-each-ref --format='%(taggerdate:iso8601)' refs/tags/v1.5.2
2007-05-20 00:30:42 -0700
$ git-for-each-ref --format='%(taggerdate:rfc2822)' refs/tags/v1.5.2
Sun, 20 May 2007 00:30:42 -0700

The default, when no ":<format>" is specified is ":default", leaving the
existing behaviour unchanged.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Make for-each-ref allow atom names like "<name>:<someth... Andy Parkins Fri, 28 Sep 2007 14:17:39 +0000 (15:17 +0100)

Make for-each-ref allow atom names like "<name>:<something>"

In anticipation of supplying a per-field date format specifier, this
patch makes parse_atom() in builtin-for-each-ref.c allow atoms that have
a valid atom name (as determined by the valid_atom[] table) followed by
a colon, followed by an arbitrary string.

The arbitrary string is where the format for the atom will be specified.

Note, if different formats are specified for the same atom, multiple
entries will be made in the used_atoms table to allow them to be
distinguished by the grab_XXXX() functions.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

parse_date_format(): convert a format name to an enum... Andy Parkins Fri, 28 Sep 2007 14:17:31 +0000 (15:17 +0100)

parse_date_format(): convert a format name to an enum date_mode

Factor out the code to parse --date=<format> parameter to revision
walkers into a separate function, parse_date_format(). This function
is passed a string and converts it to an enum date_format:

- "relative" => DATE_RELATIVE
- "iso8601" or "iso" => DATE_ISO8601
- "rfc2822" => DATE_RFC2822
- "short" => DATE_SHORT
- "local" => DATE_LOCAL
- "default" => DATE_NORMAL

In the event that none of these strings is found, the function die()s.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'gr/smtp'Junio C Hamano Sat, 29 Sep 2007 23:44:44 +0000 (16:44 -0700)

Merge branch 'gr/smtp'

* gr/smtp:
send-email --smtp-server-port: allow overriding the default port

Merge branch 'ss/svnimport'Junio C Hamano Sat, 29 Sep 2007 23:44:25 +0000 (16:44 -0700)

Merge branch 'ss/svnimport'

* ss/svnimport:
Fix pool handling in git-svnimport to avoid memory leaks.

Merge branch 'sv/svn'Junio C Hamano Sat, 29 Sep 2007 23:43:23 +0000 (16:43 -0700)

Merge branch 'sv/svn'

* sv/svn:
git-svn: handle changed svn command-line syntax
git-svn: fix test for trunk svn (transaction out of date)
git-svn: fix test for trunk svn (commit message not needed)

Merge branch 'ml/submodule'Junio C Hamano Sat, 29 Sep 2007 23:43:10 +0000 (16:43 -0700)

Merge branch 'ml/submodule'

* ml/submodule:
git-submodule - allow a relative path as the subproject url

Merge branch 'jb/remote-rm'Junio C Hamano Sat, 29 Sep 2007 23:43:06 +0000 (16:43 -0700)

Merge branch 'jb/remote-rm'

* jb/remote-rm:
git-remote rm: add tests and minor fix-ups
remote: document the 'rm' subcommand
remote: add 'rm' subcommand

Merge branch 'jk/diff-rename'Junio C Hamano Sat, 29 Sep 2007 23:42:50 +0000 (16:42 -0700)

Merge branch 'jk/diff-rename'

* jk/diff-rename:
diffcore-rename: cache file deltas

Sync with GIT 1.5.3.3Junio C Hamano Sat, 29 Sep 2007 23:31:40 +0000 (16:31 -0700)

Sync with GIT 1.5.3.3

Signed-off-by: Junio C Hamano <gitster@pobox.com>

GIT 1.5.3.3 v1.5.3.3Junio C Hamano Sat, 29 Sep 2007 23:07:46 +0000 (16:07 -0700)

GIT 1.5.3.3

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Fix revision log diff setup, avoid unnecessary diff... Linus Torvalds Sat, 29 Sep 2007 16:50:39 +0000 (09:50 -0700)

Fix revision log diff setup, avoid unnecessary diff generation

We used to incorrectly start calculating diffs whenever any argument but
'-z' was recognized by the diff options parsing. That was bogus, since not
all arguments result in diffs being needed, so we just waste a lot of time
and effort on calculating diffs that don't matter.

This actually also fixes another bug in "git log". Try this:

git log -C

and notice how it prints an extra empty line in between log entries, even
though it never prints the actual diff (because we didn't ask for any diff
format, so the diff machinery never prints anything).

With this patch, that bogus empty line is gone, because "revs->diff" is
never set. So this isn't just a "wasted time and effort" issue, it's also
a slight semantic fix.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-bundle: fix commandline examples in the manpageMiklos Vajna Wed, 26 Sep 2007 23:34:59 +0000 (01:34 +0200)

git-bundle: fix commandline examples in the manpage

Multiple commands were displayed in one line, making the manpage hard to read.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'mergetool' of git://repo.or.cz/git/merget... Junio C Hamano Sat, 29 Sep 2007 22:39:39 +0000 (15:39 -0700)

Merge branch 'mergetool' of git://repo.or.cz/git/mergetool into maint

* 'mergetool' of git://repo.or.cz/git/mergetool:
mergetool: Fix typo in options passed to kdiff3
mergetool: fix emerge when running in a subdirectory
Mergetool generating blank files (1.5.3)

strbuf change: be sure ->buf is never ever NULL.Pierre Habouzit Thu, 27 Sep 2007 10:58:23 +0000 (12:58 +0200)

strbuf change: be sure ->buf is never ever NULL.

For that purpose, the ->buf is always initialized with a char * buf living
in the strbuf module. It is made a char * so that we can sloppily accept
things that perform: sb->buf[0] = '\0', and because you can't pass "" as an
initializer for ->buf without making gcc unhappy for very good reasons.

strbuf_init/_detach/_grow have been fixed to trust ->alloc and not ->buf
anymore.

as a consequence strbuf_detach is _mandatory_ to detach a buffer, copying
->buf isn't an option anymore, if ->buf is going to escape from the scope,
and eventually be free'd.

API changes:
* strbuf_setlen now always works, so just make strbuf_reset a convenience
macro.
* strbuf_detatch takes a size_t* optional argument (meaning it can be
NULL) to copy the buffer's len, as it was needed for this refactor to
make the code more readable, and working like the callers.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>