We must save the pending commits that will be used during revision
walking and unparse them after, because we want to leave a clean
state for the next revision walking that will try to find the best
bisection point.

As we don't fork a process anymore to call "git rev-list", we need
to remove the use of GIT_TRACE to check how "git rev-list" is
called from the t6030 test that uses it.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This patch adds the "unparse_commit" function that returns a commit
into an unparsed state by freeing its data and resetting its fields
to 0.

Its parents are recursively unparsed too, because they might have
been changed. But its tree is not unparsed as it should not have
been modifed.

Note that as the "flags" and "used" fields may be used even if the
object is not parsed, we have to reset them anyway.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This patches changes the "bisect_rev_setup" and "bisect_common"
functions to make it easier to reuse them in a later patch.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This patch replace the "--next-exit" option of "git bisect--helper"
with a "--next-all" option that does merge base checking using
the "check_good_are_ancestors_of_bad" function implemented in
"bisect.c" in a former patch.

The new "--next-all" option is then used in "git-bisect.sh" instead
of the "--next-exit" option, and all the shell functions in
"git-bisect.sh" that are now unused are removed.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This is a port of the function with the same name that is in
"git-bisect.sh". The new function is not used yet but will be in
a later patch.

We also implement an helper "check_ancestors" function that use
"start_command" and "finish_command" to launch
"git rev-list $good ^$bad".
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

And all functions needed to make it work.

This is a port from the shell function with the same name
"git-bisect.sh". This function is not used yet but it will be used
later.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This makes sha1_array easier to use, so later patches will be simpler.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

So they can be used on the good array too.

This is done by renaming many functions and some variables to
remove "skip" in the name, and by adding a
"struct sha1_array *array" argument where needed.

While at it, make the second argument to "lookup_sha1_array"
const. It becomes "const unsigned char *sha1".
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This patch moves some function calls into "bisect_next_exit" so
that functions are nesting less.

The call to "bisect_rev_setup" is moved from "bisect_common" into
"bisect_next_exit" and the call to "read_bisect_refs" from
"bisect_rev_setup" into "bisect_next_exit".

While at it, "rev_argv" is moved into "bisect_rev_setup".

This will make it easier and cleaner to implement checking merge
bases.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Because we will use other instances of this struct.

The "rev_argv_push" function is changed into 2 functions
"argv_array_push" and "argv_array_push_sha1" that take a "struct
argv_array *" as first argument. And these functions are used to
simplify "bisect_rev_setup".
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This will make it easier to use good revisions for checking merge
bases later.

To simplify the code, a new "sha1_array_push" function is also
introduced.

And while at it we move the earlier part of the code to fill the
argv that is passed to "setup_revisions", so that all this code is
now completely after "read_bisect_refs".
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This patch is a minor clean up right now, but the new function
will evolve and be used more later.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This patch creates a "struct sha1_array" to store skipped revisions,
so that the same struct can be reused in a later patch for good
revisions.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

As the "sq" function was the only place using Perl in "git-bisect.sh",
this removes the Perl dependency in this script.

While at it, we also remove the sed instruction in the Makefile that
substituted @@PERL@@ with the Perl path in shell scripts, as this is
not needed anymore. (It is now only needed in "git-instaweb.sh" but
this command is dealt with separately in the Makefile.)
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Because it was used only by "git bisect--helper --next-vars" but
the "--next-vars" option has been removed.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Because it has been replaced by "--next-exit".
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

instead of "git bisect--helper --next-vars".
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The goal of this patch is to port more shell code from the "bisect_next"
function in "git-bisect.sh" to C code in "builtin-bisect--helper.c".

So we port the code that interprets the bisection result and stops or
continues (by checking out the next revision) the bisection process.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

So we can easily reuse the code in a later patch.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This simplifies the code, and while at it we create the
"print_commit_list" function that will be reused later.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Because it will be used from "bisect.c" too.
Signed-off-by: NChristian Couder <chriscool@tuxfamily.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

Signed-off-by: NNguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

POSIX only requires sed to work on text files and MERGE_RR is not a text
file.  Some versions of sed complain that this file is not newline
terminated, and exit non-zero.  Use perl instead which does not have a
problem with it.
Signed-off-by: NBrandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

These two lines appear to be unnecessary.  They set variables which are not
used afterwards.  The primary motivation to remove them is that the sed
invocation exits non-zero for seds which require newline termination of
input files.
Signed-off-by: NBrandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Some versions of sed exit non-zero if the file they are supplied is not
newline terminated.  Solaris's /usr/xpg4/bin/sed is one such sed.  So
rework this test to avoid doing so.

This affects tests t8001-annotate.sh and t8002-blame.sh.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Some versions of sed exit non-zero if the file they are supplied is not
newline terminated. Solaris's /usr/xpg4/bin/sed is one such sed.  In
this case the sed invocation can be avoided entirely since the resulting
file is equivalent to a previously created file.  So, just copy that file
into place instead.
Signed-off-by: NBrandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NBrandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Not all versions of grep understand backslashed extended regular
expressions.  Possibly only gnu grep does.
Signed-off-by: NBrandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Fredrik Skolmli and Thomas Rast noticed that it was left unstated that
"git clean" ran from a subdirectory will not affect anything outside it,
with or without path limiters.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* maint:
  improve error message in config.c
  t4018-diff-funcname: add cpp xfuncname pattern to syntax test
  Work around BSD whose typeof(tv.tv_sec) != time_t
  git-am.txt: reword extra headers in message body
  git-am.txt: Use date or value instead of time or timestamp
  git-am.txt: add an 'a', say what 'it' is, simplify a sentence
  dir.c: Fix two minor grammatical errors in comments
  git-svn: fix a sloppy Getopt::Long usage

* rj/maint-1.6.0-svn-parse-fix:
  git-svn: fix a sloppy Getopt::Long usage

* maint-1.6.0:
  dir.c: Fix two minor grammatical errors in comments

Show errno if opening a lockfile fails.
Signed-off-by: NAlex Riesen <raa.lkml@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

According to POSIX, tv_sec is supposed to be a time_t, but OpenBSD
(and FreeBSD, too) defines it to be a long, which triggers a type
mismatch when a pointer to it is given to localtime_r().
Acked-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NStephen Boyd <bebarino@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NStephen Boyd <bebarino@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>