Code

git.git
12 years agogit symbolic-ref: documentation fix
Michael Haggerty [Wed, 7 Dec 2011 15:20:16 +0000 (16:20 +0100)]
git symbolic-ref: documentation fix

The old "git symbolic-ref" manpage seemed to imply in one place that
symlinks are still the default way to represent symbolic references
and in another that symlinks are deprecated.  Fix the text and shorten
the justification for the change of implementation.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
12 years agoMerge branch 'maint-1.7.6' into maint-1.7.7
Junio C Hamano [Mon, 5 Dec 2011 23:07:49 +0000 (15:07 -0800)]
Merge branch 'maint-1.7.6' into maint-1.7.7

* maint-1.7.6:
  stripspace: fix outdated comment
  Add MYMETA.yml to perl/.gitignore

12 years agostripspace: fix outdated comment
Jeff King [Mon, 5 Dec 2011 22:29:15 +0000 (17:29 -0500)]
stripspace: fix outdated comment

The comment on top of stripspace() claims that the buffer
will no longer be NUL-terminated. However, this has not been
the case at least since the move to using strbuf in 2007.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
12 years agoAdd MYMETA.yml to perl/.gitignore
Sebastian Morr [Fri, 2 Dec 2011 22:55:28 +0000 (23:55 +0100)]
Add MYMETA.yml to perl/.gitignore

This file is auto-generated by newer versions of ExtUtils::MakeMaker
(presumably starting with the version shipping with Perl 5.14). It just
contains extra information about the environment and arguments to the
Makefile-building process, and should be ignored.

Signed-off-by: Sebastian Morr <sebastian@morr.cc>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agodocumentation fix: git difftool uses diff tools, not merge tools.
Thomas Hochstein [Mon, 14 Nov 2011 22:55:52 +0000 (23:55 +0100)]
documentation fix: git difftool uses diff tools, not merge tools.

Let the documentation for -t list valid *diff* tools,
not valid *merge* tools.

Signed-off-by: Thomas Hochstein <thh@inter.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoGit 1.7.7.4 v1.7.7.4
Junio C Hamano [Fri, 18 Nov 2011 19:28:05 +0000 (11:28 -0800)]
Git 1.7.7.4

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'jc/maint-name-rev-all' into maint
Junio C Hamano [Fri, 18 Nov 2011 19:14:16 +0000 (11:14 -0800)]
Merge branch 'jc/maint-name-rev-all' into maint

* jc/maint-name-rev-all:
  name-rev --all: do not even attempt to describe non-commit object

13 years agoMerge branch 'ml/mailmap' into maint
Junio C Hamano [Fri, 18 Nov 2011 19:14:00 +0000 (11:14 -0800)]
Merge branch 'ml/mailmap' into maint

* ml/mailmap:
  mailmap: xcalloc mailmap_info

Conflicts:
mailmap.c

13 years agoMerge branch 'jn/maint-notes-avoid-va-args' into maint
Junio C Hamano [Fri, 18 Nov 2011 19:11:50 +0000 (11:11 -0800)]
Merge branch 'jn/maint-notes-avoid-va-args' into maint

* jn/maint-notes-avoid-va-args:
  notes merge: eliminate OUTPUT macro

Conflicts:
notes-merge.c

13 years agoMakefile: add missing header file dependencies
Jonathan Nieder [Fri, 18 Nov 2011 10:02:02 +0000 (04:02 -0600)]
Makefile: add missing header file dependencies

When the streaming filter API was introduced in v1.7.7-rc0~60^2~7
(2011-05-20), we forgot to add its header to LIB_H.  Most translation
units depend on streaming.h via cache.h.

v1.7.5-rc0~48 (Fix sparse warnings, 2011-03-22) introduced undeclared
dependencies by url.o on url.h and thread-utils.o on thread-utils.h.

Noticed by make CHECK_HEADER_DEPENDENCIES=1.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agonotes merge: eliminate OUTPUT macro
Jonathan Nieder [Fri, 18 Nov 2011 01:27:46 +0000 (19:27 -0600)]
notes merge: eliminate OUTPUT macro

The macro is variadic, which breaks support for pre-C99 compilers,
and it hides an "if", which can make code hard to understand on
first reading if some arguments have side-effects.

The OUTPUT macro seems to have been inspired by the "output" function
from merge-recursive.  But that function in merge-recursive exists to
indent output based on the level of recursion and there is no similar
justification for such a function in "notes merge".

Noticed with 'make CC="gcc -std=c89 -pedantic"':

 notes-merge.c:24:22: warning: anonymous variadic macros were introduced in C99 [-Wvariadic-macros]

Encouraged-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agomailmap: xcalloc mailmap_info
Marc-André Lureau [Thu, 17 Nov 2011 01:25:06 +0000 (02:25 +0100)]
mailmap: xcalloc mailmap_info

This is to avoid reaching free of uninitialized members.

With an invalid .mailmap (and perhaps in other cases), it can reach
free(mi->name) with garbage for example.

Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoname-rev --all: do not even attempt to describe non-commit object
Junio C Hamano [Tue, 15 Nov 2011 23:51:05 +0000 (15:51 -0800)]
name-rev --all: do not even attempt to describe non-commit object

This even dates back to the very beginning of "git name-rev";
it does not make much sense to dump all objects in the repository
and label non-commits as "undefined".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoGit 1.7.7.3 v1.7.7.3
Junio C Hamano [Wed, 9 Nov 2011 00:37:00 +0000 (16:37 -0800)]
Git 1.7.7.3

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'jc/maint-remove-renamed-ref' into maint
Junio C Hamano [Wed, 9 Nov 2011 00:35:53 +0000 (16:35 -0800)]
Merge branch 'jc/maint-remove-renamed-ref' into maint

* jc/maint-remove-renamed-ref:
  branch -m/-M: remove undocumented RENAMED-REF

Conflicts:
refs.c

13 years agoMerge branch 'jm/maint-gitweb-filter-forks-fix' into maint
Junio C Hamano [Wed, 9 Nov 2011 00:26:50 +0000 (16:26 -0800)]
Merge branch 'jm/maint-gitweb-filter-forks-fix' into maint

* jm/maint-gitweb-filter-forks-fix:
  gitweb: fix regression when filtering out forks

13 years agoMerge branch 'dm/pack-objects-update' into maint
Junio C Hamano [Wed, 9 Nov 2011 00:26:45 +0000 (16:26 -0800)]
Merge branch 'dm/pack-objects-update' into maint

* dm/pack-objects-update:
  pack-objects: don't traverse objects unnecessarily
  pack-objects: rewrite add_descendants_to_write_order() iteratively
  pack-objects: use unsigned int for counter and offset values
  pack-objects: mark add_to_write_order() as inline

13 years agodocs: Update install-doc-quick
Junio C Hamano [Tue, 8 Nov 2011 18:17:40 +0000 (10:17 -0800)]
docs: Update install-doc-quick

The preformatted documentation pages live in their own repositories
these days. Adjust the installation procedure to the updated layout.

Tested-by: Stefan Naewe <stefan.naewe@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agodocs: don't mention --quiet or --exit-code in git-log(1)
Jeff King [Tue, 8 Nov 2011 21:29:30 +0000 (16:29 -0500)]
docs: don't mention --quiet or --exit-code in git-log(1)

These are diff-options, but they don't actually make sense
in the context of log.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoGit 1.7.7.2 v1.7.7.2
Junio C Hamano [Tue, 1 Nov 2011 23:16:36 +0000 (16:16 -0700)]
Git 1.7.7.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'rs/maint-estimate-cache-size' into maint
Junio C Hamano [Tue, 1 Nov 2011 23:41:41 +0000 (16:41 -0700)]
Merge branch 'rs/maint-estimate-cache-size' into maint

* rs/maint-estimate-cache-size:
  t7511: avoid use of reserved filename on Windows.

13 years agoMerge branch 'md/smtp-tls-hello-again' into maint
Junio C Hamano [Tue, 1 Nov 2011 23:12:19 +0000 (16:12 -0700)]
Merge branch 'md/smtp-tls-hello-again' into maint

* md/smtp-tls-hello-again:
  send-email: Honour SMTP domain when using TLS

13 years agoMerge branch 'jk/pull-rebase-with-work-tree' into maint
Junio C Hamano [Tue, 1 Nov 2011 23:11:00 +0000 (16:11 -0700)]
Merge branch 'jk/pull-rebase-with-work-tree' into maint

* jk/pull-rebase-with-work-tree:
  pull,rebase: handle GIT_WORK_TREE better

Conflicts:
git-pull.sh

13 years agoMerge branch 'jc/maint-diffstat-numstat-context' into maint
Junio C Hamano [Tue, 1 Nov 2011 23:10:56 +0000 (16:10 -0700)]
Merge branch 'jc/maint-diffstat-numstat-context' into maint

* jc/maint-diffstat-numstat-context:
  diff: teach --stat/--numstat to honor -U$num

13 years agoMerge branch 'js/bisect-no-checkout' into maint
Junio C Hamano [Tue, 1 Nov 2011 23:03:35 +0000 (16:03 -0700)]
Merge branch 'js/bisect-no-checkout' into maint

* js/bisect-no-checkout:
  bisect: fix exiting when checkout failed in bisect_start()

13 years agoMerge branch 'bc/attr-ignore-case' into maint
Junio C Hamano [Tue, 1 Nov 2011 22:54:45 +0000 (15:54 -0700)]
Merge branch 'bc/attr-ignore-case' into maint

* bc/attr-ignore-case:
  attr.c: respect core.ignorecase when matching attribute patterns
  attr: read core.attributesfile from git_default_core_config
  builtin/mv.c: plug miniscule memory leak
  cleanup: use internal memory allocation wrapper functions everywhere
  attr.c: avoid inappropriate access to strbuf "buf" member

Conflicts:
remote.c

13 years agoMerge branch 'cn/fetch-prune' into maint
Junio C Hamano [Tue, 1 Nov 2011 22:51:01 +0000 (15:51 -0700)]
Merge branch 'cn/fetch-prune' into maint

* cn/fetch-prune:
  fetch: treat --tags like refs/tags/*:refs/tags/* when pruning
  fetch: honor the user-provided refspecs when pruning refs
  remote: separate out the remote_find_tracking logic into query_refspecs
  t5510: add tests for fetch --prune
  fetch: free all the additional refspecs

13 years agoMerge branch 'sp/smart-http-failure' into maint
Junio C Hamano [Tue, 1 Nov 2011 22:45:16 +0000 (15:45 -0700)]
Merge branch 'sp/smart-http-failure' into maint

* sp/smart-http-failure:
  remote-curl: Fix warning after HTTP failure

13 years agoMerge jn/maint-http-error-message
Junio C Hamano [Tue, 1 Nov 2011 22:42:25 +0000 (15:42 -0700)]
Merge jn/maint-http-error-message

* commit 'be22d92eac809ad2bfa2b7c83ad7cad5a15f1c43':
  http: avoid empty error messages for some curl errors
  http: remove extra newline in error message

13 years agot7511: avoid use of reserved filename on Windows.
Pat Thoyts [Mon, 31 Oct 2011 14:07:27 +0000 (14:07 +0000)]
t7511: avoid use of reserved filename on Windows.

PRN is a special filename on Windows to send data to the printer. As
this is generated during test 3 substitute an alternate prefix to avoid this.

Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'rs/maint-estimate-cache-size' into maint
Junio C Hamano [Thu, 27 Oct 2011 19:03:16 +0000 (12:03 -0700)]
Merge branch 'rs/maint-estimate-cache-size' into maint

* rs/maint-estimate-cache-size:
  read-cache.c: fix index memory allocation

13 years agoclone: Quote user supplied path in a single quote pair
Richard Hartmann [Thu, 27 Oct 2011 16:46:53 +0000 (18:46 +0200)]
clone: Quote user supplied path in a single quote pair

Without this patch,

    $ git clone foo .

results in this:

    Cloning into ....
    done.

With it:

    Cloning into '.'...
    done.

Signed-off-by: Richard Hartmann <richih.mailinglist@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'jn/gitweb-highlite-sanitise' into maint
Junio C Hamano [Wed, 26 Oct 2011 23:13:31 +0000 (16:13 -0700)]
Merge branch 'jn/gitweb-highlite-sanitise' into maint

* jn/gitweb-highlite-sanitise:
  gitweb: Strip non-printable characters from syntax highlighter output

13 years agoMerge branch 'jk/argv-array' into maint
Junio C Hamano [Wed, 26 Oct 2011 23:13:31 +0000 (16:13 -0700)]
Merge branch 'jk/argv-array' into maint

* jk/argv-array:
  run_hook: use argv_array API
  checkout: use argv_array API
  bisect: use argv_array API
  quote: provide sq_dequote_to_argv_array
  refactor argv_array into generic code
  quote.h: fix bogus comment
  add sha1_array API docs

13 years agoMerge branch 'jc/run-receive-hook-cleanup' into maint
Junio C Hamano [Wed, 26 Oct 2011 23:13:31 +0000 (16:13 -0700)]
Merge branch 'jc/run-receive-hook-cleanup' into maint

* jc/run-receive-hook-cleanup:
  refactor run_receive_hook()

13 years agoMerge branch 'cn/eradicate-working-copy' into maint
Junio C Hamano [Wed, 26 Oct 2011 23:13:31 +0000 (16:13 -0700)]
Merge branch 'cn/eradicate-working-copy' into maint

* cn/eradicate-working-copy:
  Remove 'working copy' from the documentation and C code

13 years agoMerge branch 'maint-1.7.6' into maint
Junio C Hamano [Wed, 26 Oct 2011 23:13:27 +0000 (16:13 -0700)]
Merge branch 'maint-1.7.6' into maint

* maint-1.7.6:
  notes_merge_commit(): do not pass temporary buffer to other function
  gitweb: Fix links to lines in blobs when javascript-actions are enabled
  mergetool: no longer need to save standard input
  mergetool: Use args as pathspec to unmerged files
  t9159-*.sh: skip for mergeinfo test for svn <= 1.4
  date.c: Support iso8601 timezone formats
  remote: only update remote-tracking branch if updating refspec
  remote rename: warn when refspec was not updated
  remote: "rename o foo" should not rename ref "origin/bar"
  remote: write correct fetch spec when renaming remote 'remote'

13 years agoMerge branch 'mh/maint-notes-merge-pathbuf-fix' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:12:48 +0000 (16:12 -0700)]
Merge branch 'mh/maint-notes-merge-pathbuf-fix' into maint-1.7.6

* mh/maint-notes-merge-pathbuf-fix:
  notes_merge_commit(): do not pass temporary buffer to other function

13 years agoMerge branch 'ps/gitweb-js-with-lineno' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:12:35 +0000 (16:12 -0700)]
Merge branch 'ps/gitweb-js-with-lineno' into maint-1.7.6

* ps/gitweb-js-with-lineno:
  gitweb: Fix links to lines in blobs when javascript-actions are enabled

13 years agoMerge branch 'jm/mergetool-pathspec' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:12:25 +0000 (16:12 -0700)]
Merge branch 'jm/mergetool-pathspec' into maint-1.7.6

* jm/mergetool-pathspec:
  mergetool: no longer need to save standard input
  mergetool: Use args as pathspec to unmerged files

13 years agoMerge branch 'mz/remote-rename' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:12:19 +0000 (16:12 -0700)]
Merge branch 'mz/remote-rename' into maint-1.7.6

* mz/remote-rename:
  remote: only update remote-tracking branch if updating refspec
  remote rename: warn when refspec was not updated
  remote: "rename o foo" should not rename ref "origin/bar"
  remote: write correct fetch spec when renaming remote 'remote'

13 years agoMerge branch 'rj/maint-t9159-svn-rev-notation' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:12:13 +0000 (16:12 -0700)]
Merge branch 'rj/maint-t9159-svn-rev-notation' into maint-1.7.6

* rj/maint-t9159-svn-rev-notation:
  t9159-*.sh: skip for mergeinfo test for svn <= 1.4

13 years agoMerge branch 'hl/iso8601-more-zone-formats' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:11:28 +0000 (16:11 -0700)]
Merge branch 'hl/iso8601-more-zone-formats' into maint-1.7.6

* hl/iso8601-more-zone-formats:
  date.c: Support iso8601 timezone formats

13 years agoMerge branch 'maint-1.7.6' into maint
Junio C Hamano [Wed, 26 Oct 2011 23:09:28 +0000 (16:09 -0700)]
Merge branch 'maint-1.7.6' into maint

* maint-1.7.6:
  make the sample pre-commit hook script reject names with newlines, too
  git-read-tree.txt: update sparse checkout examples
  git-read-tree.txt: correct sparse-checkout and skip-worktree description
  git-read-tree.txt: language and typography fixes
  unpack-trees: print "Aborting" to stderr
  Documentation/git-update-index: refer to 'ls-files'
  Documentation: basic configuration of notes.rewriteRef

13 years agoMerge branch 'tr/doc-note-rewrite' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:09:04 +0000 (16:09 -0700)]
Merge branch 'tr/doc-note-rewrite' into maint-1.7.6

* tr/doc-note-rewrite:
  Documentation: basic configuration of notes.rewriteRef

13 years agoMerge branch 'nd/sparse-doc' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:09:04 +0000 (16:09 -0700)]
Merge branch 'nd/sparse-doc' into maint-1.7.6

* nd/sparse-doc:
  git-read-tree.txt: update sparse checkout examples

13 years agoMerge branch 'mg/maint-doc-sparse-checkout' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:09:03 +0000 (16:09 -0700)]
Merge branch 'mg/maint-doc-sparse-checkout' into maint-1.7.6

* mg/maint-doc-sparse-checkout:
  git-read-tree.txt: correct sparse-checkout and skip-worktree description
  git-read-tree.txt: language and typography fixes
  unpack-trees: print "Aborting" to stderr

13 years agoMerge branch 'maint-1.7.5' into maint-1.7.6
Junio C Hamano [Wed, 26 Oct 2011 23:08:19 +0000 (16:08 -0700)]
Merge branch 'maint-1.7.5' into maint-1.7.6

* maint-1.7.5:
  make the sample pre-commit hook script reject names with newlines, too
  Reindent closing bracket using tab instead of spaces
  Documentation/git-update-index: refer to 'ls-files'

13 years agoMerge branch 'maint-1.7.4' into maint-1.7.5
Junio C Hamano [Wed, 26 Oct 2011 23:08:14 +0000 (16:08 -0700)]
Merge branch 'maint-1.7.4' into maint-1.7.5

* maint-1.7.4:
  make the sample pre-commit hook script reject names with newlines, too
  Reindent closing bracket using tab instead of spaces
  Documentation/git-update-index: refer to 'ls-files'

13 years agoMerge branch 'maint-1.7.3' into maint-1.7.4
Junio C Hamano [Wed, 26 Oct 2011 23:08:08 +0000 (16:08 -0700)]
Merge branch 'maint-1.7.3' into maint-1.7.4

* maint-1.7.3:
  make the sample pre-commit hook script reject names with newlines, too
  Reindent closing bracket using tab instead of spaces
  Documentation/git-update-index: refer to 'ls-files'

13 years agoMerge branch 'sn/doc-update-index-assume-unchanged' into maint-1.7.3
Junio C Hamano [Wed, 26 Oct 2011 23:08:00 +0000 (16:08 -0700)]
Merge branch 'sn/doc-update-index-assume-unchanged' into maint-1.7.3

* sn/doc-update-index-assume-unchanged:
  Documentation/git-update-index: refer to 'ls-files'

13 years agoread-cache.c: fix index memory allocation
René Scharfe [Mon, 24 Oct 2011 01:01:27 +0000 (03:01 +0200)]
read-cache.c: fix index memory allocation

estimate_cache_size() tries to guess how much memory is needed for the
in-memory representation of an index file.  It does that by using the
file size, the number of entries and the difference of the sizes of the
on-disk and in-memory structs -- without having to check the length of
the name of each entry, which varies for each entry, but their sums are
the same no matter the representation.

Except there can be a difference.  First of all, the size is really
calculated by ce_size and ondisk_ce_size based on offsetof(..., name),
not sizeof, which can be different.  And entries are padded with 1 to 8
NULs at the end (after the variable name) to make their total length a
multiple of eight.

So in order to allocate enough memory to hold the index, change the
delta calculation to be based on offsetof(..., name) and round up to
the next multiple of eight.

On a 32-bit Linux, this delta was used before:

sizeof(struct cache_entry)        == 72
sizeof(struct ondisk_cache_entry) == 64
                                    ---
                                      8

The actual difference for an entry with a filename length of one was,
however (find the definitions are in cache.h):

offsetof(struct cache_entry, name)        == 72
offsetof(struct ondisk_cache_entry, name) == 62

ce_size        == (72 + 1 + 8) & ~7 == 80
ondisk_ce_size == (62 + 1 + 8) & ~7 == 64
                                      ---
                                       16

So eight bytes less had been allocated for such entries.  The new
formula yields the correct delta:

(72 - 62 + 7) & ~7 == 16

Reported-by: John Hsing <tsyj2007@gmail.com>
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agomake the sample pre-commit hook script reject names with newlines, too
Jim Meyering [Sat, 22 Oct 2011 17:44:40 +0000 (19:44 +0200)]
make the sample pre-commit hook script reject names with newlines, too

The sample pre-commit hook script would fail to reject a file name like
"a\nb" because of the way newlines are handled in "$(...)".  Adjust the
test to count filtered bytes and require there be 0.  Also print all
diagnostics to standard error, not stdout, so they will actually be seen.

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'maint-1.7.3' into maint
Junio C Hamano [Mon, 24 Oct 2011 06:55:22 +0000 (23:55 -0700)]
Merge branch 'maint-1.7.3' into maint

* maint-1.7.3:
  Reindent closing bracket using tab instead of spaces

13 years agoReindent closing bracket using tab instead of spaces
Nguyễn Thái Ngọc Duy [Mon, 24 Oct 2011 04:24:51 +0000 (15:24 +1100)]
Reindent closing bracket using tab instead of spaces

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoGit 1.7.7.1 v1.7.7.1
Junio C Hamano [Mon, 24 Oct 2011 04:48:06 +0000 (21:48 -0700)]
Git 1.7.7.1

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoRelNotes/1.7.7.1: setgid bit patch is about fixing "git init" via Makefile setting
Jonathan Nieder [Sat, 22 Oct 2011 11:11:07 +0000 (06:11 -0500)]
RelNotes/1.7.7.1: setgid bit patch is about fixing "git init" via Makefile setting

The change was actually about "git init -s" which sets the setgid bit on
SysV-style systems to allow shared access to a repository, and can provoke
errors on BSD-style systems, depending on how permissive the filesystem in
use wants to be.

More to the point, the patch was just taking a fix that arrived for
FreeBSD in v1.5.5 days and making it also apply to machines using an
(obscure) GNU userland/FreeBSD kernel mixture.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agogitweb: fix regression when filtering out forks
Julien Muchembled [Fri, 21 Oct 2011 19:04:21 +0000 (21:04 +0200)]
gitweb: fix regression when filtering out forks

This fixes a condition in filter_forks_from_projects_list that failed if
process directory was different from project root: in such case, the subroutine
was a no-op and forks were not detected.

Signed-off-by: Julien Muchembled <jm@jmuchemb.eu>
Tested-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoAlmost ready for 1.7.7.1
Junio C Hamano [Fri, 21 Oct 2011 18:01:07 +0000 (11:01 -0700)]
Almost ready for 1.7.7.1

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'nd/maint-autofix-tag-in-head' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:26 +0000 (10:49 -0700)]
Merge branch 'nd/maint-autofix-tag-in-head' into maint

* nd/maint-autofix-tag-in-head:
  Accept tags in HEAD or MERGE_HEAD
  merge: remove global variable head[]
  merge: use return value of resolve_ref() to determine if HEAD is invalid
  merge: keep stash[] a local variable

Conflicts:
builtin/merge.c

13 years agoMerge branch 'jc/apply-blank-at-eof-fix' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:26 +0000 (10:49 -0700)]
Merge branch 'jc/apply-blank-at-eof-fix' into maint

* jc/apply-blank-at-eof-fix:
  apply --whitespace=error: correctly report new blank lines at end

13 years agoMerge branch 'jn/no-g-plus-s-on-bsd' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:25 +0000 (10:49 -0700)]
Merge branch 'jn/no-g-plus-s-on-bsd' into maint

* jn/no-g-plus-s-on-bsd:
  Makefile: do not set setgid bit on directories on GNU/kFreeBSD

13 years agoMerge branch 'rs/diff-cleanup-records-fix' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:25 +0000 (10:49 -0700)]
Merge branch 'rs/diff-cleanup-records-fix' into maint

* rs/diff-cleanup-records-fix:
  diff: resurrect XDF_NEED_MINIMAL with --minimal
  Revert removal of multi-match discard heuristic in 27af01

13 years agoMerge branch 'il/archive-err-signal' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:25 +0000 (10:49 -0700)]
Merge branch 'il/archive-err-signal' into maint

* il/archive-err-signal:
  Support ERR in remote archive like in fetch/push

13 years agoMerge branch 'js/maint-merge-one-file-osx-expr' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:25 +0000 (10:49 -0700)]
Merge branch 'js/maint-merge-one-file-osx-expr' into maint

* js/maint-merge-one-file-osx-expr:
  merge-one-file: fix "expr: non-numeric argument"

13 years agoMerge branch 'jm/maint-apply-detects-corrupt-patch-header' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:24 +0000 (10:49 -0700)]
Merge branch 'jm/maint-apply-detects-corrupt-patch-header' into maint

* jm/maint-apply-detects-corrupt-patch-header:
  fix "git apply --index ..." not to deref NULL

13 years agoMerge branch 'jc/checkout-from-tree-keep-local-changes' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:24 +0000 (10:49 -0700)]
Merge branch 'jc/checkout-from-tree-keep-local-changes' into maint

* jc/checkout-from-tree-keep-local-changes:
  checkout $tree $path: do not clobber local changes in $path not in $tree

13 years agoMerge branch 'mm/maint-config-explicit-bool-display' into maint
Junio C Hamano [Fri, 21 Oct 2011 17:49:24 +0000 (10:49 -0700)]
Merge branch 'mm/maint-config-explicit-bool-display' into maint

* mm/maint-config-explicit-bool-display:
  config: display key_delim for config --bool --get-regexp

13 years agopack-objects: don't traverse objects unnecessarily
Dan McGee [Tue, 18 Oct 2011 05:21:23 +0000 (00:21 -0500)]
pack-objects: don't traverse objects unnecessarily

This brings back some of the performance lost in optimizing recency
order inside pack objects. We were doing extreme amounts of object
re-traversal: for the 2.14 million objects in the Linux kernel
repository, we were calling add_to_write_order() over 1.03 billion times
(a 0.2% hit rate, making 99.8% of of these calls extraneous).

Two optimizations take place here- we can start our objects array
iteration from a known point where we left off before we started trying
to find our tags, and we don't need to do the deep dives required by
add_family_to_write_order() if the object has already been marked as
filled.

These two optimizations bring some pretty spectacular results via `perf
stat`:

task-clock:   83373 ms        --> 43800 ms         (50% faster)
cycles:       221,633,461,676 --> 116,307,209,986  (47% fewer)
instructions: 149,299,179,939 --> 122,998,800,184  (18% fewer)

Helped-by: Ramsay Jones (format string fix in "die" message)
Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agostrbuf.c: remove unnecessary strbuf_grow() from strbuf_getwholeline()
Brandon Casey [Thu, 6 Oct 2011 04:21:33 +0000 (23:21 -0500)]
strbuf.c: remove unnecessary strbuf_grow() from strbuf_getwholeline()

This use of strbuf_grow() is a historical artifact that was once used to
ensure that strbuf.buf was allocated and properly nul-terminated.  This
was added before the introduction of the slopbuf in b315c5c0, which
guarantees that strbuf.buf always points to a usable nul-terminated string.
So let's remove it.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agopack-objects: rewrite add_descendants_to_write_order() iteratively
Dan McGee [Tue, 18 Oct 2011 05:21:24 +0000 (00:21 -0500)]
pack-objects: rewrite add_descendants_to_write_order() iteratively

This removes the need to call this function recursively, shinking the
code size slightly and netting a small performance increase.

Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agopack-objects: use unsigned int for counter and offset values
Dan McGee [Tue, 18 Oct 2011 05:21:22 +0000 (00:21 -0500)]
pack-objects: use unsigned int for counter and offset values

This is done in some of the new pack layout code introduced in commit
1b4bb16b9ec331c. This more closely matches the nr_objects global that is
unsigned that these variables are based off of and bounded by.

Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agopack-objects: mark add_to_write_order() as inline
Dan McGee [Tue, 18 Oct 2011 05:21:21 +0000 (00:21 -0500)]
pack-objects: mark add_to_write_order() as inline

This function is a whole 26 bytes when compiled on x86_64, but is
currently invoked over 1.037 billion times when running pack-objects on
the Linux kernel git repository. This is hitting the point where
micro-optimizations do make a difference, and inlining it only increases
the object file size by 38 bytes.

As reported by perf, this dropped task-clock from 84183 to 83373 ms, and
total cycles from 223.5 billion to 221.6 billion. Not astronomical, but
worth getting for adding one word.

Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agofetch: treat --tags like refs/tags/*:refs/tags/* when pruning
Carlos Martín Nieto [Sat, 15 Oct 2011 05:04:26 +0000 (07:04 +0200)]
fetch: treat --tags like refs/tags/*:refs/tags/* when pruning

If --tags is specified, add that refspec to the list given to
prune_refs so it knows to treat it as a filter on what refs to
should consider for prunning. This way

    git fetch --prune --tags origin

only prunes tags and doesn't delete the branch refs.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agofetch: honor the user-provided refspecs when pruning refs
Carlos Martín Nieto [Sat, 15 Oct 2011 05:04:25 +0000 (07:04 +0200)]
fetch: honor the user-provided refspecs when pruning refs

If the user gave us refspecs on the command line, we should use those
when deciding whether to prune a ref instead of relying on the
refspecs in the config.

Previously, running

    git fetch --prune origin refs/heads/master:refs/remotes/origin/master

would delete every other ref under the origin namespace because we
were using the refspec to filter the available refs but using the
configured refspec to figure out if a ref had been deleted on the
remote. This is clearly the wrong thing to do.

Change prune_refs and get_stale_heads to simply accept a list of
references and a list of refspecs. The caller of either function needs
to decide what refspecs should be used to decide whether a ref is
stale.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoremote: separate out the remote_find_tracking logic into query_refspecs
Carlos Martín Nieto [Sat, 15 Oct 2011 05:04:24 +0000 (07:04 +0200)]
remote: separate out the remote_find_tracking logic into query_refspecs

Move the body of remote_find_tracking() to a new helper query_refspecs()
that finds a refspec that matches and applies the transformation, but
explicitly takes the list of refspecs, and make remote_find_tracking() a
thin wrapper of it.

Make apply_refspecs() also use query_refspecs().

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoPrepare for 1.7.7.1
Junio C Hamano [Sun, 16 Oct 2011 03:55:12 +0000 (20:55 -0700)]
Prepare for 1.7.7.1

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'ms/patch-id-with-overlong-line' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:39 +0000 (20:46 -0700)]
Merge branch 'ms/patch-id-with-overlong-line' into maint

* ms/patch-id-with-overlong-line:
  patch-id.c: use strbuf instead of a fixed buffer

13 years agoMerge branch 'jc/maint-bundle-too-quiet' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:39 +0000 (20:46 -0700)]
Merge branch 'jc/maint-bundle-too-quiet' into maint

* jc/maint-bundle-too-quiet:
  Teach progress eye-candy to fetch_refs_from_bundle()

13 years agoMerge branch 'jk/filter-branch-require-clean-work-tree' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:38 +0000 (20:46 -0700)]
Merge branch 'jk/filter-branch-require-clean-work-tree' into maint

* jk/filter-branch-require-clean-work-tree:
  filter-branch: use require_clean_work_tree

13 years agoMerge branch 'jc/maint-fsck-fwrite-size-check' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:38 +0000 (20:46 -0700)]
Merge branch 'jc/maint-fsck-fwrite-size-check' into maint

* jc/maint-fsck-fwrite-size-check:
  fsck: do not abort upon finding an empty blob

13 years agoMerge branch 'bk/ancestry-path' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:38 +0000 (20:46 -0700)]
Merge branch 'bk/ancestry-path' into maint

* bk/ancestry-path:
  t6019: avoid refname collision on case-insensitive systems
  revision: do not include sibling history in --ancestry-path output
  revision: keep track of the end-user input from the command line
  rev-list: Demonstrate breakage with --ancestry-path --all

13 years agoMerge branch 'jk/maint-fetch-submodule-check-fix' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:38 +0000 (20:46 -0700)]
Merge branch 'jk/maint-fetch-submodule-check-fix' into maint

* jk/maint-fetch-submodule-check-fix:
  fetch: avoid quadratic loop checking for updated submodules

13 years agoMerge branch 'tr/mergetool-valgrind' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:37 +0000 (20:46 -0700)]
Merge branch 'tr/mergetool-valgrind' into maint

* tr/mergetool-valgrind:
  Symlink mergetools scriptlets into valgrind wrappers

13 years agoMerge branch 'nm/grep-object-sha1-lock' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:37 +0000 (20:46 -0700)]
Merge branch 'nm/grep-object-sha1-lock' into maint

* nm/grep-object-sha1-lock:
  grep: Fix race condition in delta_base_cache

Conflicts:
builtin/grep.c

13 years agoMerge branch 'jc/diff-index-unpack' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:36 +0000 (20:46 -0700)]
Merge branch 'jc/diff-index-unpack' into maint

* jc/diff-index-unpack:
  diff-index: pass pathspec down to unpack-trees machinery
  unpack-trees: allow pruning with pathspec
  traverse_trees(): allow pruning with pathspec

13 years agoMerge branch 'mm/rebase-i-exec-edit' into maint
Junio C Hamano [Sun, 16 Oct 2011 03:46:36 +0000 (20:46 -0700)]
Merge branch 'mm/rebase-i-exec-edit' into maint

* mm/rebase-i-exec-edit:
  rebase -i: notice and warn if "exec $cmd" modifies the index or the working tree
  rebase -i: clean error message for --continue after failed exec

13 years agosend-email: Honour SMTP domain when using TLS
Matthew Daley [Sat, 15 Oct 2011 08:44:52 +0000 (04:44 -0400)]
send-email: Honour SMTP domain when using TLS

git-send-email sends two SMTP EHLOs when using TLS encryption, however
only the first, unencrypted EHLO uses the SMTP domain that can be
optionally specified by the user (--smtp-domain).  This is because the
call to hello() that produces the second, encrypted EHLO does not pass
the SMTP domain as an argument, and hence a default of
'localhost.localdomain' is used instead.

Fix by passing in the SMTP domain in this call.

Signed-off-by: Matthew Daley <mattjd@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agot1304: fall back to $USER if $LOGNAME is not defined
René Scharfe [Fri, 14 Oct 2011 17:44:45 +0000 (19:44 +0200)]
t1304: fall back to $USER if $LOGNAME is not defined

For some reason $LOGNAME is not set anymore for me after an upgrade from
Ubuntu 11.04 to 11.10.  Use $USER in such a case.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agopull,rebase: handle GIT_WORK_TREE better
Jeff King [Thu, 13 Oct 2011 15:59:24 +0000 (11:59 -0400)]
pull,rebase: handle GIT_WORK_TREE better

You can't currently run git-pull or git-rebase from outside
of the work tree, even with GIT_WORK_TREE set, due to an
overeager require_work_tree function. Commit e2eb527
documents this problem and provides the infrastructure for a
fix, but left it to later commits to audit and update
individual scripts.

Changing these scripts to use require_work_tree_exists is
easy to verify. We immediately call cd_to_toplevel, anyway.
Therefore no matter which function we use, the state
afterwards is one of:

  1. We have a work tree, and we are at the top level.

  2. We don't have a work tree, and we have died.

The only catch is that we must also make sure no code that
ran before the cd_to_toplevel assumed that we were already
in the working tree.

In this case, we will only have included shell libraries and
called set_reflog_action, neither of which care about the
current working directory at all.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agofix "git apply --index ..." not to deref NULL
Jim Meyering [Wed, 12 Oct 2011 14:33:54 +0000 (16:33 +0200)]
fix "git apply --index ..." not to deref NULL

I noticed this when "git am CORRUPTED" unexpectedly failed with an
odd diagnostic, and even removed one of the files it was supposed
to have patched.

Reproduce with any valid old/new patch from which you have removed
the "+++ b/FILE" line.  You'll see a diagnostic like this

    fatal: unable to write file '(null)' mode 100644: Bad address

and you'll find that FILE has been removed.

The above is on glibc-based systems.  On other systems, rather than
getting "null", you may provoke a segfault as git tries to
dereference the NULL file name.

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agobranch -m/-M: remove undocumented RENAMED-REF
Junio C Hamano [Wed, 12 Oct 2011 16:42:26 +0000 (09:42 -0700)]
branch -m/-M: remove undocumented RENAMED-REF

The commit message for c976d41 (git-branch: add options and tests for
branch renaming, 2006-11-28) mentions RENAME_REF but otherwise this is not
documented anywhere, and it does not appear in any of the tests.

Worse yet, the name of the actual file is "RENAMED-REF".

This was supposed to hold the commit object name at the tip of the branch
the most recent "branch -m/-M" renamed, but that is not necessary in order
to be able to recover from a mistake. Even when "branch -M A B" overwrites
an existing branch B, what is kept in RENAMED-REF is the commit at the tip
of the original branch A, not the commit B from the now-lost branch.

Just remove this unused "feature".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoattr.c: respect core.ignorecase when matching attribute patterns
Brandon Casey [Tue, 11 Oct 2011 15:53:31 +0000 (10:53 -0500)]
attr.c: respect core.ignorecase when matching attribute patterns

When core.ignorecase is true, the file globs configured in the
.gitattributes file should be matched case-insensitively against the paths
in the working directory.  Let's do so.

Plus, add some tests.

The last set of tests is performed only on a case-insensitive filesystem.
Those tests make sure that git handles the case where the .gitignore file
resides in a subdirectory and the user supplies a path that does not match
the case in the filesystem.  In that case^H^H^H^Hsituation, part of the
path supplied by the user is effectively interpreted case-insensitively,
and part of it is dependent on the setting of core.ignorecase.  git will
currently only match the portion of the path below the directory holding
the .gitignore file according to the setting of core.ignorecase.

This is also partly future-proofing.  Currently, git builds the attr stack
based on the path supplied by the user, so we don't have to do anything
special (like use strcmp_icase) to handle the parts of that path that don't
match the filesystem with respect to case.  If git instead built the attr
stack by scanning the repository, then the paths in the origin field would
not necessarily match the paths supplied by the user.  If someone makes a
change like that in the future, these tests will notice.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoconfig: display key_delim for config --bool --get-regexp
Matthieu Moy [Mon, 10 Oct 2011 12:54:51 +0000 (14:54 +0200)]
config: display key_delim for config --bool --get-regexp

The previous logic in show_config was to print the delimiter when the
value was set, but Boolean variables have an implicit value "true" when
they appear with no value in the config file. As a result, we got:

git_Config        --get-regexp '.*\.Boolean' #1. Ok: example.boolean
git_Config --bool --get-regexp '.*\.Boolean' #2. NO: example.booleantrue

Fix this by defering the display of the separator until after the value
to display has been computed.

Reported-by: Brian Foster <brian.foster@maxim-ic.com>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agot5510: add tests for fetch --prune
Carlos Martín Nieto [Fri, 7 Oct 2011 22:51:07 +0000 (00:51 +0200)]
t5510: add tests for fetch --prune

The failures will be fixed in later commits.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agofetch: free all the additional refspecs
Carlos Martín Nieto [Fri, 7 Oct 2011 22:51:06 +0000 (00:51 +0200)]
fetch: free all the additional refspecs

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoattr: read core.attributesfile from git_default_core_config
Junio C Hamano [Thu, 6 Oct 2011 18:22:24 +0000 (13:22 -0500)]
attr: read core.attributesfile from git_default_core_config

This code calls git_config from a helper function to parse the config entry
it is interested in.  Calling git_config in this way may cause a problem if
the helper function can be called after a previous call to git_config by
another function since the second call to git_config may reset some
variable to the value in the config file which was previously overridden.

The above is not a problem in this case since the function passed to
git_config only parses one config entry and the variable it sets is not
assigned outside of the parsing function.  But a programmer who desires
all of the standard config options to be parsed may be tempted to modify
git_attr_config() so that it falls back to git_default_config() and then it
_would_ be vulnerable to the above described behavior.

So, move the call to git_config up into the top-level cmd_* function and
move the responsibility for parsing core.attributesfile into the main
config file parser.

Which is only the logical thing to do ;-)

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agobuiltin/mv.c: plug miniscule memory leak
Brandon Casey [Thu, 6 Oct 2011 18:22:23 +0000 (13:22 -0500)]
builtin/mv.c: plug miniscule memory leak

The "it" string would not be free'ed if base_name was non-NULL.
Let's free it.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agocleanup: use internal memory allocation wrapper functions everywhere
Brandon Casey [Thu, 6 Oct 2011 18:22:22 +0000 (13:22 -0500)]
cleanup: use internal memory allocation wrapper functions everywhere

The "x"-prefixed versions of strdup, malloc, etc. will check whether the
allocation was successful and terminate the process otherwise.

A few uses of malloc were left alone since they already implemented a
graceful path of failure or were in a quasi external library like xdiff.

Additionally, the call to malloc in compat/win32/syslog.c was not modified
since the syslog() implemented there is a die handler and a call to the
x-wrappers within a die handler could result in recursion should memory
allocation fail.  This will have to be addressed separately.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoattr.c: avoid inappropriate access to strbuf "buf" member
Brandon Casey [Thu, 6 Oct 2011 18:22:21 +0000 (13:22 -0500)]
attr.c: avoid inappropriate access to strbuf "buf" member

This code sequence performs a strcpy into the buf member of a strbuf
struct.  The strcpy may move the position of the terminating nul of the
string and effectively change the length of string so that it does not
match the len member of the strbuf struct.

Currently, this sequence works since the strbuf was given a hint when it
was initialized to allocate enough space to accomodate the string that will
be strcpy'ed, but this is an implementation detail of strbufs, not a
guarantee.

So, lets rework this sequence so that the strbuf is only manipulated by
strbuf functions, and direct modification of its "buf" member is not
necessary.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>