rebase: allow "-" short-hand for the previous branch

Teach rebase the same shorthand as checkout and merge to name the
branch to rebase the current branch on; that is, that "-" means "the
branch we were previously on".

Requested-by: Tim Chase <git@tim.thechases.com>
Signed-off-by: Brian Gesiak <modocache@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
tests: use "env" to run commands with temporary env-var settings

Ordinarily, we would say "VAR=VAL command" to execute a tested
command with environment variable(s) set only for that command.
This however does not work if 'command' is a shell function (most
notably 'test_must_fail'); the result of the assignment is retained
and affects later commands.

To avoid this, we used to assign and export environment variables
and run such a test in a subshell, like so:

        (
                VAR=VAL && export VAR &&
                test_must_fail git command to be tested
        )

But with "env" utility, we should be able to say:

        test_must_fail env VAR=VAL git command to be tested

which is much shorter and easier to read.

Signed-off-by: David Tran <unsignedzero@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
remote-hg: do not fail on invalid bookmarks

Mercurial can have bookmarks pointing to "nullid" (the empty root
revision), while Git can not have references to it.
When cloning or fetching from a Mercurial repository that has such a
bookmark, the import will fail because git-remote-hg will not be able to
create the corresponding reference.

Warn the user about the invalid reference, and continue the import,
instead of stopping right away.

Also add some test cases for this issue.

Reported-by: Antoine Pelisse <apelisse@gmail.com>
Signed-off-by: Max Horn <max@quendi.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Enable index-pack threading in msysgit.

This adds a Windows implementation of pread.  Note that it is NOT
safe to intersperse calls to read() and pread() on a file
descriptor.  According to the ReadFile spec, using the 'overlapped'
argument should not affect the implicit position pointer of the
descriptor.  Experiments have shown that this is, in fact, a lie.

To accomodate that fact, this change also incorporates:

http://article.gmane.org/gmane.comp.version-control.git/196042

... which gives each index-pack thread its own file descriptor.

Signed-off-by: Stefan Zager <szager@chromium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
fsck.c:fsck_commit(): use skip_prefix() to verify and skip constant

fsck_commit() uses memcmp() to check if the buffer starts with a
certain prefix, and skips the prefix if it does.

This is exactly what skip_prefix() was designed for.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
status: disable translation when --porcelain is used

"git status --branch --porcelain" displays the status of the branch
(ahead, behind, gone), and used gettext to translate the string.

Use hardcoded strings when --porcelain is used, but keep the gettext
translation for "git status --short" which is essentially the same, but
meant to be read by a human.

Reported-by: Anarky <ghostanarky@gmail.com>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
SQUASH??? fix decl-after-stmt and simplify
fsck: use bitwise-or assignment operator to set flag

fsck_tree() has two different ways to set a flag variable, either by
using a if-statement that guards an assignment, or by using a
bitwise-or assignment operator.  Most are done with the former, and
only one variable is assigned with the latter.

Since all the conditions are short-and-sweet, we can afford to
uniformly use the latter style, which makes the resulting code
shorter and easier to read.

Signed-off-by: Hiroyuki Sano <sh19910711@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
object.h: centralize object flag allocation

While the field "flags" is mainly used by the revision walker, it is
also used in many other places. Centralize the whole flag allocation to
one place for a better overview (and easier to move flags if we have
too).

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
log: add --show-linear-break to help see non-linear history

Option explanation is in rev-list-options.txt. The interaction with -z
is left undecided.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
grep: add grep.fullName config variable

This configuration variable sets the default for the --full-name option.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'tc/commit-dry-run-exit-status-tests' into jch

* tc/commit-dry-run-exit-status-tests:
  demonstrate git-commit --dry-run exit code behaviour
Merge branch 'jk/shallow-update-fix' into jch

Serving objects from a shallow repository needs to write a
temporary file to be used, but the serving upload-pack may not have
write access to the repository which is meant to be read-only.

* jk/shallow-update-fix:
  shallow: verify shallow file after taking lock
  shallow: automatically clean up shallow tempfiles
  shallow: use stat_validity to check for up-to-date file
Merge branch 'cp/am-patch-format-doc' into jch

* cp/am-patch-format-doc:
  Documentation/git-am: typofix
  Documentation/git-am: Document supported --patch-format options

# Conflicts:
# 	Documentation/git-am.txt
Merge branch 'nd/tag-version-sort' into jch

Allow v1.9.0 sorted before v1.10.0 in "git tag --list" output.

* nd/tag-version-sort:
  tag: support --sort=<spec>
Merge branch 'dk/skip-prefix-scan-only-once' into jch

Update implementation of skip_prefix() to scan only once; given
that most "prefix" arguments to the inline function are constant
strings whose strlen() can be determined at the compile time, this
might actually make things worse with a compiler with sufficient
intelligence.

* dk/skip-prefix-scan-only-once:
  skip_prefix(): scan prefix only once
Merge branch 'jc/stash-pop-not-popped' into jch

"stash pop", upon failing to apply the stash, refrains from
discarding the stash to avoid information loss.  Be more explicit
in the error message.

The wording may want to get a bit more bikeshedding.

* jc/stash-pop-not-popped:
  stash pop: mention we did not drop the stash upon failing to apply
Merge branch 'jn/wt-status' into jch

Unify the codepaths that format new/modified/changed sections and
conflicted paths in the "git status" output and make it possible to
properly internationalize their output.

* jn/wt-status:
  wt-status: lift the artificual "at least 20 columns" floor
  wt-status: i18n of section labels
  wt-status: extract the code to compute width for labels
  wt-status: make full label string to be subject to l10n
Merge branch 'nd/upload-pack-shallow' into jch

* nd/upload-pack-shallow:
  upload-pack: send shallow info over stdin to pack-objects

# Conflicts:
# 	t/t5537-fetch-shallow.sh
# 	upload-pack.c
Merge branch 'es/sh-i18n-envsubst' into jch

* es/sh-i18n-envsubst:
  sh-i18n--envsubst: retire unused string_list_member()