Граф коммитов

252 Коммитов

Автор SHA1 Сообщение Дата
Johannes Schindelin 6acbcb927f git wrapper: add --git-dir=<path> and --bare options
With this, you can say

	git --bare repack -a -d

inside a bare repository, and it will actually work. While at it,
also move the --version, --help and --exec-path options to the
handle_options() function.

While at documenting the new options, also document the --paginate
option.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-25 14:15:47 -07:00
Johannes Schindelin 4ab243a944 Allow an alias to start with "-p"
Now, something like

	[alias]
		pd = -p diff

works as expected.

[jc: a follow-up fix from Jeff King folded in.]

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-25 14:15:46 -07:00
Matthias Lederhofer d5b9e6cfa7 argv created by handle_alias should be NULL terminated
Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-14 11:32:39 -07:00
Junio C Hamano d3ba675aae Merge branch 'ml/trace'
* ml/trace:
  test-lib: unset GIT_TRACE
  GIT_TRACE: fix a mixed declarations and code warning
  GIT_TRACE: show which built-in/external commands are executed
2006-07-12 23:09:10 -07:00
Junio C Hamano 3939b805f4 Merge branch 'lt/prune'
* lt/prune:
  builtin "git prune"
2006-07-12 22:31:55 -07:00
Junio C Hamano 85fb65ed6e "git -p cmd" to page anywhere
This allows you to say:

	git -p diff v2.6.16-rc5..

and the command pipes the output of any git command to your pager.

[jc: this resurrects a month old RFC patch with improvement
 suggested by Linus to call it --paginate instead of --less.]

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-09 03:27:03 -07:00
Matthias Lederhofer 575ba9d69d GIT_TRACE: show which built-in/external commands are executed
With the environment variable GIT_TRACE set git will show
 - alias expansion
 - built-in command execution
 - external command execution
on stderr.

Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-09 00:57:23 -07:00
Linus Torvalds ba84a797e7 builtin "git prune"
This actually removes the objects to be pruned, unless you specify "-n"
(at which point it will just tell you which files it would prune).

This doesn't do the pack-file pruning that the shell-script used to do,
but if somebody really wants to, they could add it easily enough. I wonder
how useful it is, though, considering that "git repack -a -d" is just a
lot more efficient and generates a better end result.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-09 00:57:22 -07:00
Johannes Schindelin 00449f992b Make git-fmt-merge-msg a builtin
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-03 19:42:41 -07:00
Johannes Schindelin 47e5c0ca2c Save errno in handle_alias()
git.c:main() relies on the value of errno being set by the last attempt to
execute the command. However, if something goes awry in handle_alias(),
that assumption is wrong. So restore errno before returning from
handle_alias().

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-28 03:55:36 -07:00
Timo Hirvonen 554fe20d80 Make some strings const
Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-28 03:24:37 -07:00
Andreas Ericsson 33ebb8717f git wrapper: fix command name in an error message.
When the command execution by execv_git_cmd() fails with an errno
other than ENOENT, we used an uninitialized variable instead of
the string that holds the command name to report what failed.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-28 03:20:51 -07:00
Lukas Sandström 854b4629f9 Make git-update-ref a builtin
Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-18 22:12:20 -07:00
Lukas Sandström fefe81c996 Make git-update-index a builtin
Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-18 22:12:19 -07:00
Lukas Sandström 7499c99615 Make git-stripspace a builtin
Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-18 22:12:16 -07:00
Lukas Sandström 34488e3c37 Make git-mailinfo a builtin
[jc: with a bit of constness tightening]

Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-18 22:10:28 -07:00
Lukas Sandström e690e84315 Make git-mailsplit a builtin
Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-18 21:58:20 -07:00
Lukas Sandström 8ed05fb5e9 Make git-write-tree a builtin
Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-18 21:58:19 -07:00
Junio C Hamano d8498500ba fix git alias
When extra command line arguments are given to a command that
was alias-expanded, the code generated a wrong argument list,
leaving the original alias in the result, and forgetting to
terminate the new argv list.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-16 22:34:09 -07:00
Rene Scharfe 52ba03cbb1 Built-in git-get-tar-commit-id
By being an internal command git-get-commit-id can make use of
struct ustar_header and other stuff and stops wasting precious
disk space.

Note: I recycled one of the two "tar-tree" entries instead of
splitting that cleanup into a separate patch.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-10 11:14:00 -07:00
Junio C Hamano a025463bc0 git alias: try alias last.
This disables alias "foo" from being used for git-foo, and when
we do use alias we check the built-in and then existing command
names first and then alias as the fallback.  This avoids the
problem of common commands used in scripts getting clobbered by
user specific aliases.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-05 18:09:40 -07:00
Johannes Schindelin 2b11e3170e If you have a config containing something like this:
[alias]
		l = "log --stat -M ORIG_HEAD.."

you can call

	git l

and it will do the same as

	git log --stat -M ORIG_HEAD..

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-05 17:49:17 -07:00
Christian Couder 895f10c3b5 Builtin git-rev-parse.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-03 23:45:30 -07:00
Timo Hirvonen f81daefe56 Builtin git-cat-file
Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-24 13:35:35 -07:00
Junio C Hamano 73f0a1577b Merge branch 'js/fmt-patch'
This makes "git format-patch" a built-in.

* js/fmt-patch:
  git-rebase: use canonical A..B syntax to format-patch
  git-format-patch: now built-in.
  fmt-patch: Support --attach
  fmt-patch: understand old <his> notation
  Teach fmt-patch about --keep-subject
  Teach fmt-patch about --numbered
  fmt-patch: implement -o <dir>
  fmt-patch: output file names to stdout
  Teach fmt-patch to write individual files.
  Use RFC2822 dates from "git fmt-patch".
  git-fmt-patch: thinkofix to show [PATCH] properly.
  rename internal format-patch wip
  Minor tweak on subject line in --pretty=email
  Tentative built-in format-patch.
2006-05-24 12:19:47 -07:00
Junio C Hamano f2054be4c4 Merge branch 'jc/builtin-n-tar-tree'
This pulls in "make many commands built-in" branches.

* jc/builtin-n-tar-tree:
  built-in tar-tree and remote tar-tree
  Builtin git-diff-files, git-diff-index, git-diff-stages, and git-diff-tree.
  Builtin git-show-branch.
  Builtin git-apply.
  Builtin git-commit-tree.
  Builtin git-read-tree.
  Builtin git-tar-tree.
  Builtin git-ls-tree.
  Builtin git-ls-files.
2006-05-24 11:24:50 -07:00
Junio C Hamano 376bb3a352 Merge branch 'lt/dirwalk'
This makes 'git add' and 'git rm' built-ins.

* lt/dirwalk:
  Add builtin "git rm" command
  Move pathspec matching from builtin-add.c into dir.c
  Prevent bogus paths from being added to the index.
  builtin-add: fix unmatched pathspec warnings.
  Remove old "git-add.sh" remnants
  builtin-add: warn on unmatched pathspecs
  Do "git add" as a builtin
  Clean up git-ls-file directory walking library interface
  libify git-ls-files directory traversal
2006-05-24 11:04:16 -07:00
Junio C Hamano 1af0d11283 Merge branch 'jc/tartree' into jc/builtin-n-tar-tree
* jc/tartree:
  built-in tar-tree and remote tar-tree
2006-05-23 14:44:31 -07:00
Peter Eriksen e8cc9cd98e Builtin git-diff-files, git-diff-index, git-diff-stages, and git-diff-tree.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:13 -07:00
Peter Eriksen 51ce34b992 Builtin git-show-branch.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:13 -07:00
Peter Eriksen ac6245e31a Builtin git-apply.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:13 -07:00
Peter Eriksen 6d96ac18e5 Builtin git-commit-tree.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:12 -07:00
Peter Eriksen d147e501f3 Builtin git-read-tree.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:12 -07:00
Peter Eriksen 56d1398ad3 Builtin git-tar-tree.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:12 -07:00
Peter Eriksen aae01bda7f Builtin git-ls-tree.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:12 -07:00
Peter Eriksen 0864f26421 Builtin git-ls-files.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-23 13:11:12 -07:00
Junio C Hamano 685637381a git-format-patch: now built-in.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-21 02:48:21 -07:00
Junio C Hamano 328b710d80 Merge branch 'master' into js/fmt-patch
* master: (119 commits)
  diff family: add --check option
  Document that "git add" only adds non-ignored files.
  Add a conversion tool to migrate remote information into the config
  fetch, pull: ask config for remote information
  Fix build procedure for builtin-init-db
  read-tree -m -u: do not overwrite or remove untracked working tree files.
  apply --cached: do not check newly added file in the working tree
  Implement a --dry-run option to git-quiltimport
  Implement git-quiltimport
  Revert "builtin-grep: workaround for non GNU grep."
  builtin-grep: workaround for non GNU grep.
  builtin-grep: workaround for non GNU grep.
  git-am: use apply --cached
  apply --cached: apply a patch without using working tree.
  apply --numstat: show new name, not old name.
  Documentation/Makefile: create tarballs for the man pages and html files
  Allow pickaxe and diff-filter options to be used by git log.
  Libify the index refresh logic
  Builtin git-init-db
  Remove unnecessary local in get_ref_sha1.
  ...
2006-05-21 01:34:54 -07:00
Junio C Hamano 217542640e built-in tar-tree and remote tar-tree
This makes tar-tree a built-in.  As an added bonus, you can now
say:

	git tar-tree --remote=remote-repository <ent> [<base>]

This does not work with git-daemon yet, but should work with
localhost and git over ssh transports.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-19 17:48:34 -07:00
Linus Torvalds d9b814cc97 Add builtin "git rm" command
This changes semantics very subtly, because it adds a new atomicity
guarantee.

In particular, if you "git rm" several files, it will now do all or
nothing. The old shell-script really looped over the removed files one by
one, and would basically randomly fail in the middle if "-f" was used and
one of the files didn't exist in the working directory.

This C builtin one will not re-write the index after each remove, but
instead remove all files at once. However, that means that if "-f" is used
(to also force removal of the file from the working directory), and some
files have already been removed from the workspace, it won't stop in the
middle in some half-way state like the old one did.

So what happens is that if the _first_ file fails to be removed with "-f",
we abort the whole "git rm". But once we've started removing, we don't
leave anything half done. If some of the other files don't exist, we'll
just ignore errors of removal from the working tree.

This is only an issue with "-f", of course.

I think the new behaviour is strictly an improvement, but perhaps more
importantly, it is _different_. As a special case, the semantics are
identical for the single-file case (which is the only one our test-suite
seems to test).

The other question is what to do with leading directories. The old "git
rm" script didn't do anything, which is somewhat inconsistent. This one
will actually clean up directories that have become empty as a result of
removing the last file, but maybe we want to have a flag to decide the
behaviour?

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-19 17:28:33 -07:00
Timo Hirvonen c3c8835fbb Builtin git-init-db
Basically this just renames init-db.c to builtin-init-db.c and makes
some strings const.

Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-19 15:31:20 -07:00
Lukas Sandström 9370bae2ce Make git-check-format-ref a builtin.
Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-18 15:51:38 -07:00
Linus Torvalds 5fb61b8dcf Make "git rev-list" be a builtin
This was surprisingly easy. The diff is truly minimal: rename "main()" to
"cmd_rev_list()" in rev-list.c, and rename the whole file to reflect its
new built-in status.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-18 15:46:11 -07:00
Linus Torvalds 0d78153952 Do "git add" as a builtin
First try. Let's see how well this works.

In many ways, the hard parts of "git commit" are not so different from
this, and a builtin commit would share a lot of the code, I think.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 11:52:40 -07:00
Junio C Hamano efca578eec Merge branch 'jc/grep'
* jc/grep: (22 commits)
  Fix silly typo in new builtin grep
  builtin-grep: unparse more command line options.
  builtin-grep: use external grep when we can take advantage of it
  builtin-grep: -F (--fixed-strings)
  builtin-grep: -w fix
  builtin-grep: typofix
  builtin-grep: tighten argument parsing.
  builtin-grep: documentation
  Teach -f <file> option to builtin-grep.
  builtin-grep: -L (--files-without-match).
  builtin-grep: binary files -a and -I
  builtin-grep: terminate correctly at EOF
  builtin-grep: tighten path wildcard vs tree traversal.
  builtin-grep: support -w (--word-regexp).
  builtin-grep: support -c (--count).
  builtin-grep: allow more than one patterns.
  builtin-grep: allow -<n> and -[ABC]<n> notation for context lines.
  builtin-grep: printf %.*s length is int, not ptrdiff_t.
  builtin-grep: do not use setup_revisions()
  builtin-grep: support '-l' option.
  ...
2006-05-15 18:12:06 -07:00
Junio C Hamano c66b6c067e Merge branch 'master' into js/fmt-patch
* master: (109 commits)
  t1300-repo-config: two new config parsing tests.
  Another config file parsing fix.
  update-index: plug memory leak from prefix_path()
  checkout-index: plug memory leak from prefix_path()
  update-index --unresolve: work from a subdirectory.
  pack-object: squelch eye-candy on non-tty
  core.prefersymlinkrefs: use symlinks for .git/HEAD
  repo-config: trim white-space before comment
  Fix for config file section parsing.
  Clarify git-cherry documentation.
  Update git-unpack-objects documentation.
  Fix up docs where "--" isn't displayed correctly.
  Several trivial documentation touch ups.
  git-svn 1.0.0
  git-svn: documentation updates
  delta: stricter constness
  Makefile: do not link rev-list any specially.
  builtin-push: --all and --tags _are_ explicit refspecs
  builtin-log/whatchanged/show: make them official.
  show-branch: omit uninteresting merges.
  ...
2006-05-06 14:42:59 -07:00
Junio C Hamano 230f544e87 Merge branch 'jc/diff'
* jc/diff:
  builtin-diff: call it "git-diff", really.
  builtin-diff.c: die() formatting type fix.
  built-in diff: assorted updates.
  built-in diff.
2006-05-03 23:54:34 -07:00
Junio C Hamano d820f91871 Merge branch 'jc/count'
* jc/count:
  builtin-count-objects: open packs when running -v
  builtin-count-objects: make it official.
  built-in count-objects.
2006-05-03 23:40:39 -07:00
Junio C Hamano 8ab99476ec builtin-diff: call it "git-diff", really.
Call it "git diff" not "git diffn", remove the shell script
version, and hardlink the git binary to it.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-01 23:07:28 -07:00
Junio C Hamano 5010cb5fcc built-in "git grep"
This attempts to set up built-in "git grep" to further reduce
our dependence on the shell, while at the same time optionally
allowing to run grep against object database.  You could do
funky things like these:

	git grep --cached -e pattern	;# grep from index
	git grep -e pattern master	;# or in a rev
	git grep -e pattern master next ;# or in multiple revs
	git grep -e pattern pu^@	;# even like this with an
					;# extension from another topic ;-)
	git grep -e pattern master..next ;# or even from rev ranges
	git grep -e pattern master~20:Documentation
					;# or an arbitrary tree
	git grep -e pattern next:git-commit.sh
        				;# or an arbitrary blob

Right now, it does not understand and/or obey many options grep
should accept, and the pattern must be given with -e option due
to the way the parameter parser is structured, both of which
obviously need to be fixed for usability.

But this is going in the right direction.  The shell script
version is one of the worst Portability offender in the git
barebone Porcelainish; it uses xargs -0 to pass paths around and
shell arrays to sift flags and parameters.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-01 01:26:46 -07:00
Linus Torvalds 755225de6c git builtin "push"
This adds a builtin "push" command, which is largely just a C'ification of
the "git-push.sh" script.

Now, the reason I did it as a built-in is partly because it's yet another
step on relying less on shell, but it's actually mostly because I've
wanted to be able to push to _multiple_ repositories, and the most obvious
and simplest interface for that would seem be to just have a "remotes"
file that has multiple URL entries.

(For "pull", having multiple entries should either just select the first
one, or you could fall back on the others on failure - your choice).

And quite frankly, it just became too damn messy to do that in shell.
Besides, we actually have a fair amount of infrastructure in C, so it just
wasn't that hard to do.

Of course, this is almost totally untested. It probably doesn't work for
anything but the one trial I threw at it. "Simple" doesn't necessarily
mean "obviously correct".

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-30 00:59:18 -07:00
Junio C Hamano 65056021f2 built-in diff.
This starts to replace the shell script version of "git diff".

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-28 23:20:52 -07:00
Junio C Hamano c74320872b built-in count-objects.
Also it learned to do -v (verbose) to report:

	- number of loose objects
	- disk occupied by loose objects
	- number of objects in local packs
	- number of loose objects that are also in pack
	- unrecognised garbage in .git/objects/??/.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-27 21:35:27 -07:00
Linus Torvalds 83aa18eade Fix "git help -a" terminal autosizing
When I split out the builtin commands into their own files, I left the
include of <sys/ioctl.h> in git.c rather than moving it to the file that
needed it (builtin-help.c).

Nobody seems to have noticed, because everything still worked, but because
the TIOCGWINSZ macro was now no longer defined when compiling the
"term_columns()" function, it would no longer automatically notice the
terminal size unless your system used the ancient "COLUMNS" environment
variable approach.

Trivially fixed by just moving the header include to the file that
actually needs it.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-27 11:45:39 -07:00
Junio C Hamano 91efcf6065 Merge branch 'master' into jc/fmt-patch
* master:
  Split up builtin commands into separate files from git.c
  git-log produces no output
  fix pack-object buffer size
  mailinfo: decode underscore used in "Q" encoding properly.
  Reintroduce svn pools to solve the memory leak.
  pack-objects: do not stop at object that is "too small"
  git-commit --amend: two fixes.
  get_tree_entry(): make it available from tree-walk
  sha1_name.c: no need to include diff.h; tree-walk.h will do.
  sha1_name.c: prepare to make get_tree_entry() reusable from others.
  get_sha1() shorthands for blob/tree objects
  pre-commit hook: complain about conflict markers.
  git-merge: a bit more readable user guidance.
  diff: move diff.c to diff-lib.c to make room.
  git log: don't do merge diffs by default
  Allow "git repack" users to specify repacking window/depth
  Document git-clone --reference
  Fix filename scaling for binary files
  Fix uninteresting tags in new revision parsing

Conflicts:

    Adjusted the addition of fmt-patch to match the recent split
    from git.c to builtin.log.c.
2006-04-21 13:25:47 -07:00
Linus Torvalds 70827b15bf Split up builtin commands into separate files from git.c
Right now it split it into "builtin-log.c" for log-related commands
("log", "show" and "whatchanged"), and "builtin-help.c" for the
informational commands (usage printing and "help" and "version").

This just makes things easier to read, I find.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-21 13:14:41 -07:00
Junio C Hamano 43885c2a55 rename internal format-patch wip
Otherwise "git format-patch" would invoke unfinished internal one that
does only --stdout

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-20 12:45:02 -07:00
Linus Torvalds 1aec7917dc git log: don't do merge diffs by default
I personally prefer "ignore_merges" to be on by default, because quite
often the merge diff is distracting and not interesting. That's true both
with "-p" and with "--stat" output.

If you want output from merges, you can trivially use the "-m", "-c" or
"--cc" flags to tell that you're interested in merges, which also tells
the diff generator what kind of diff to do (for --stat, any of the three
will do, of course, but they differ for plain patches or for
--patch-with-stat).

This trivial patch just removes the two lines that tells "git log" not to
ignore merges. It will still show the commit log message, of course, due
to the "always_show_header" part.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-19 11:09:22 -07:00
Junio C Hamano 3eefc18917 Tentative built-in format-patch.
This only does --stdout right now.  To write into separate files
with pretty-printed filenames like the real thing does, it needs
a bit mroe work.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-18 16:45:27 -07:00
Junio C Hamano b073f26b25 git.c: LOGSIZE is unused after log printing cleanup.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-17 21:47:35 -07:00
Linus Torvalds 9153983310 Log message printout cleanups
On Sun, 16 Apr 2006, Junio C Hamano wrote:
>
> In the mid-term, I am hoping we can drop the generate_header()
> callchain _and_ the custom code that formats commit log in-core,
> found in cmd_log_wc().

Ok, this was nastier than expected, just because the dependencies between
the different log-printing stuff were absolutely _everywhere_, but here's
a patch that does exactly that.

The patch is not very easy to read, and the "--patch-with-stat" thing is
still broken (it does not call the "show_log()" thing properly for
merges). That's not a new bug. In the new world order it _should_ do
something like

	if (rev->logopt)
		show_log(rev, rev->logopt, "---\n");

but it doesn't. I haven't looked at the --with-stat logic, so I left it
alone.

That said, this patch removes more lines than it adds, and in particular,
the "cmd_log_wc()" loop is now a very clean:

	while ((commit = get_revision(rev)) != NULL) {
		log_tree_commit(rev, commit);
		free(commit->buffer);
		commit->buffer = NULL;
	}

so it doesn't get much prettier than this. All the complexity is entirely
hidden in log-tree.c, and any code that needs to flush the log literally
just needs to do the "if (rev->logopt) show_log(...)" incantation.

I had to make the combined_diff() logic take a "struct rev_info" instead
of just a "struct diff_options", but that part is pretty clean.

This does change "git whatchanged" from using "diff-tree" as the commit
descriptor to "commit", and I changed one of the tests to reflect that new
reality. Otherwise everything still passes, and my other tests look fine
too.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-17 15:18:25 -07:00
Linus Torvalds 78fff6ebba Fixes for option parsing
Make sure "git show" always show the header, regardless of whether there
is a diff or not.

Also, make sure "always_show_header" actually works, since generate_header
only tested it in one out of three return paths.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-16 15:34:37 -07:00
Junio C Hamano cb8f64b4e3 log/whatchanged/show - log formatting cleanup.
This moves the decision to print the log message, while diff
options are in effect, to log-tree.  It gives behaviour closer
to the traditional one.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-16 03:35:38 -07:00
Junio C Hamano d4ed9793fd Simplify common default options setup for built-in log family.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-16 02:42:00 -07:00
Junio C Hamano b2934926dd Merge branch 'master' into lt/logopt
* master:
  pager: do not fork a pager if PAGER is set to empty.
  diff-options: add --patch-with-stat
  diff-files --stat: do not dump core with unmerged index.
  Support "git cmd --help" syntax
  diff --stat: do not do its own three-dashes.
  diff-tree: typefix.
  GIT v1.3.0-rc4
  xdiff: post-process hunks to make them consistent.
2006-04-16 02:31:11 -07:00
Linus Torvalds ba1d45051e Tentative built-in "git show"
This uses the "--no-walk" flag that I never actually implemented (but I'm
sure I mentioned it) to make "git show" be essentially the same thing as
"git whatchanged --no-walk".

It just refuses to add more interesting parents to the revision walking
history, so you don't actually get any history, you just get the commit
you asked for.

I was going to add "--no-walk" as a real argument flag to git-rev-list
too, but I'm not sure anybody actually needs it. Although it might be
useful for porcelain, so I left the door open.

[jc: ported to the unified option structure by Linus]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-16 00:13:38 -07:00
Junio C Hamano 5b84f4d87a Built-in git-whatchanged.
Split internal "git log" into reusable piece and add "git
whatchanged".  This is based on the option parsing unification
work Linus did.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-16 00:07:41 -07:00
Junio C Hamano 6b9c58f466 Split init_revisions() out of setup_revisions()
Merging all three option parsers related to whatchanged is
unarguably the right thing, but the fallout was too big to scare
me away.  Let's try it once again, but once step at time.

This splits out init_revisions() call from setup_revisions(), so
that the callers can set different defaults to match the
traditional benaviour.

The rev-list command is still broken in a big way, which is the
topic of next step.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-15 23:46:36 -07:00
Linus Torvalds 1cd95087c3 Support "git cmd --help" syntax
The "--help" argument is special, in that it is (along with "--version")
in that is taken by the "git" program itself rather than the sub-command,
and thus we've had the syntax "git --help cmd".

However, as anybody who has ever used CVS or some similar devil-spawn
program, it's confusing as h*ll when options before the sub-command act
differently from options after the sub-command, so this quick hack just
makes it acceptable to do "git cmd --help" instead, and get the exact same
result.

It may be hacky, but it's simple and does the trick.

Of course, this does not help if you use one of the non-builtin commands
without using the "git" helper. Ie you won't be getting a man-page just
because you do "git-rev-list --help". Don't expect us to be quite _that_
helpful.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-15 18:17:46 -07:00
Junio C Hamano 6f4780f9df diff --stat: do not do its own three-dashes.
I missed that "git-diff-* --stat" spits out three-dash separator
on its own without being asked.  Remove it.

When we output commit log followed by diff, perhaps --patch-with-stat,
for downstream consumer, we _would_ want the three-dash between
the message and the diff material, but that logic belongs to the
caller, not diff generator.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-15 14:06:42 -07:00
Junio C Hamano 8e8f998739 Fix up default abbrev in setup_revisions() argument parser.
The default abbreviation precision should be DEFAULT_ABBREV as before.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-14 22:42:31 -07:00
Linus Torvalds cd2bdc5309 Common option parsing for "git log --diff" and friends
This basically does a few things that are sadly somewhat interdependent,
and nontrivial to split out

 - get rid of "struct log_tree_opt"

   The fields in "log_tree_opt" are moved into "struct rev_info", and all
   users of log_tree_opt are changed to use the rev_info struct instead.

 - add the parsing for the log_tree_opt arguments to "setup_revision()"

 - make setup_revision set a flag (revs->diff) if the diff-related
   arguments were used. This allows "git log" to decide whether it wants
   to show diffs or not.

 - make setup_revision() also initialize the diffopt part of rev_info
   (which we had from before, but we just didn't initialize it)

 - make setup_revision() do all the "finishing touches" on it all (it will
   do the proper flag combination logic, and call "diff_setup_done()")

Now, that was the easy and straightforward part.

The slightly more involved part is that some of the programs that want to
use the new-and-improved rev_info parsing don't actually want _commits_,
they may want tree'ish arguments instead. That meant that I had to change
setup_revision() to parse the arguments not into the "revs->commits" list,
but into the "revs->pending_objects" list.

Then, when we do "prepare_revision_walk()", we walk that list, and create
the sorted commit list from there.

This actually cleaned some stuff up, but it's the less obvious part of the
patch, and re-organized the "revision.c" logic somewhat. It actually paves
the way for splitting argument parsing _entirely_ out of "revision.c",
since now the argument parsing really is totally independent of the commit
walking: that didn't use to be true, since there was lots of overlap with
get_commit_reference() handling etc, now the _only_ overlap is the shared
(and trivial) "add_pending_object()" thing.

However, I didn't do that file split, just because I wanted the diff
itself to be smaller, and show the actual changes more clearly. If this
gets accepted, I'll do further cleanups then - that includes the file
split, but also using the new infrastructure to do a nicer "git diff" etc.

Even in this form, it actually ends up removing more lines than it adds.

It's nice to note how simple and straightforward this makes the built-in
"git log" command, even though it continues to support all the diff flags
too. It doesn't get much simpler that this.

I think this is worth merging soonish, because it does allow for future
cleanup and even more sharing of code. However, it obviously touches
"revision.c", which is subtle. I've tested that it passes all the tests we
have, and it passes my "looks sane" detector, but somebody else should
also give it a good look-over.

[jc: squashed the original and three "oops this too" updates, with
 another fix-up.]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-14 21:56:55 -07:00
Linus Torvalds f43ba60e2c Use less memory in "git log"
This trivially avoids keeping the commit message data around after we
don't need it any more, avoiding a continually growing "git log" memory
footprint.

It's not a huge deal, but it's somewhat noticeable. For the current kernel
tree, doing a full "git log" I got

 - before: /usr/bin/time git log > /dev/null
	0.81user 0.02system 0:00.84elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
	0inputs+0outputs (0major+8851minor)pagefaults 0swaps

 - after: /usr/bin/time git log > /dev/null
	0.79user 0.03system 0:00.83elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
	0inputs+0outputs (0major+5039minor)pagefaults 0swaps

ie the touched pages dropped from 8851 to 5039. For the historic kernel
archive, the numbers are 18357->11037 minor page faults.

We could/should in theory free the commits themselves, but that's really a
lot harder, since during revision traversal we may hit the same commit
twice through different children having it as a parent, even after we've
shown it once (when that happens, we'll silently ignore it next time, but
we still need the "struct commit" to know).

And as the commit message data is clearly the biggest part of the commit,
this is the really easy 60% solution.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-13 11:26:56 -07:00
Junio C Hamano d53352422b git-log: do not output excess blank line between commits
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-13 00:26:21 -07:00
Junio C Hamano c4e05b1a22 blame and friends: adjust to multiple pathspec change.
This makes things that include revision.h build again.

Blame is also built, but I am not sure how well it works (or how
well it worked to begin with) -- it was relying on tree-diff to
be using whatever pathspec was used the last time, which smells
a bit suspicious.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-10 19:17:31 -07:00
Junio C Hamano 477f2b4131 git log --full-diff
Without this flag, "git log -p paths..." shows commits that
touch the specified paths, and diffs about the same specified
paths.  With this, the full diff is shown for commits that touch
the specified paths.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-10 16:45:19 -07:00
Junio C Hamano 52b70d56bd git log [diff-tree options]...
And this makes "git log" to take common diff-tree options, so
that it can be used as "git whatchanged".

The recent revision walker updates by Linus to make path
limiting low-latency helps this quite a bit.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-09 01:59:03 -07:00
Junio C Hamano f0853837d6 git-log: match rev-list --abbrev and --abbrev-commit
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-08 20:32:40 -07:00
Rene Scharfe ec26b4d6b0 Fix sparse warnings about non-ANSI function prototypes
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-02 12:58:47 -07:00
Linus Torvalds 7b0c996679 Move "--parent" parsing into generic revision.c library code
Not only do we do it in both rev-list.c and git.c, the revision walking
code will soon want to know whether we should rewrite parenthood
information or not.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-31 16:24:48 -08:00
Fredrik Kuivinen a87cd02ce0 Nicer output from 'git'
[jc: with suggestions by Jan-Benedict Glaw]

Signed-off-by: Fredrik Kuivinen <freku045@student.liu.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-09 12:03:14 -08:00
Junio C Hamano b4f2a6ac92 Use #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-09 11:58:05 -08:00
Junio C Hamano 9201c70742 Const tightening.
Mark Wooding noticed there was a type mismatch warning in git.c; this
patch does things slightly differently (mostly tightening const) and
was what I was holding onto, waiting for the setup-revisions change
to be merged into the master branch.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-05 02:47:29 -08:00
Junio C Hamano 64bc6e3db5 setup_revisions(): handle -n<n> and -<n> internally.
This moves the handling of max-count shorthand from the internal
implementation of "git log" to setup_revisions() so other users
of setup_revisions() can use it.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-02 15:24:01 -08:00
Junio C Hamano 7ae0b0cb65 git-log (internal): more options.
This ports the following options from rev-list based git-log
implementation:

 * -<n>, -n<n>, and -n <n>.  I am still wondering if we want
    this natively supported by setup_revisions(), which already
    takes --max-count.  We may want to move them in the next
    round.  Also I am not sure if we can get away with not
    setting revs->limited when we set max-count.  The latest
    rev-list.c and revision.c in this series do not, so I left
    them as they are.

 * --pretty and --pretty=<fmt>.

 * --abbrev=<n> and --no-abbrev.

The previous commit already handles time-based limiters
(--since, --until and friends).  The remaining things that
rev-list based git-log happens to do are not useful in a pure
log-viewing purposes, and not ported:

 * --bisect (obviously).

 * --header.  I am actually in favor of doing the NUL
   terminated record format, but rev-list based one always
   passed --pretty, which defeated this option.  Maybe next
   round.

 * --parents.  I do not think of a reason a log viewer wants
   this.  The flag is primarily for feeding squashed history
   via pipe to downstream tools.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-01 03:16:34 -08:00
Linus Torvalds 70b006b971 Tie it all together: "git log"
This is what the previous diffs all built up to.

We can do "git log" as a trivial small helper function inside git.c,
because the infrastructure is all there for us to use as a library.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-02-28 14:49:34 -08:00
Linus Torvalds 231af8322a Teach the "git" command to handle some commands internally
This is another patch in the "prepare to do more in C" series, where the
git wrapper command is taught about the notion of handling some
functionality internally.

Right now, the only internal commands are "version" and "help", but the
point being that we can now easily extend it to handle some of the trivial
scripts internally. Things like "git log" and "git diff" wouldn't need
separate external scripts any more.

This also implies that to support the old "git-log" and "git-diff" syntax,
the "git" wrapper now automatically looks at the name it was executed as,
and if it is "git-xxxx", it will assume that it is to internally do what
"git xxxx" would do.

In other words, you can (once you implement an internal command) soft- or
hard-link that command to the "git" wrapper command, and it will do the
right thing, whether you use the "git xxxx" or the "git-xxxx" format.

There's one other change: the search order for external programs is
modified slightly, so that the first entry remains GIT_EXEC_DIR, but the
second entry is the same directory as the git wrapper itself was executed
out of - if we can figure it out from argv[0], of course.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-02-26 15:10:37 -08:00
Michal Ostrowski 77cb17e940 Exec git programs without using PATH.
The git suite may not be in PATH (and thus programs such as
git-send-pack could not exec git-rev-list).  Thus there is a need for
logic that will locate these programs.  Modifying PATH is not
desirable as it result in behavior differing from the user's
intentions, as we may end up prepending "/usr/bin" to PATH.

- git C programs will use exec*_git_cmd() APIs to exec sub-commands.
- exec*_git_cmd() will execute a git program by searching for it in
  the following directories:
	1. --exec-path (as used by "git")
	2. The GIT_EXEC_PATH environment variable.
	3. $(gitexecdir) as set in Makefile (default value $(bindir)).
- git wrapper will modify PATH as before to enable shell scripts to
  invoke "git-foo" commands.

Ideally, shell scripts should use the git wrapper to become independent
of PATH, and then modifying PATH will not be necessary.

[jc: with minor updates after a brief review.]

Signed-off-by: Michal Ostrowski <mostrows@watson.ibm.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-01-13 16:49:01 -08:00
Andreas Ericsson da6bf70ebf git: grok 'help' to mean '--help'.
Most other scm's understand it, most users expect it and it's an easy fix.

Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-01-05 20:28:52 -08:00
Alex Riesen 7246ed438c \n usage in stderr output
fprintf and die sometimes have missing/excessive "\n" in their arguments,
correct the strings where I think it would be appropriate.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-21 23:09:40 -08:00
Linus Torvalds 112d0bafd6 Make "git help" sort git commands in columns
This changes "pretty_print_string_list()" to show the git commands
alphabetically in column order, which is the normal one.

Ie instead of doing

	git commands available in '/home/torvalds/bin'
	----------------------------------------------
	  add                am                 ...
	  applypatch         archimport         ...
	  cat-file           check-ref-format   ...
	...

it does

	git commands available in '/home/torvalds/bin'
	----------------------------------------------
	  add                diff-tree          ...
	  am                 fetch              ...
	  apply              fetch-pack         ...
	...

where each column is sorted.

This is how "ls" sorts things too, and since visually the columns are much
more distinct than the rows, so it _looks_ more sorted.

The "ls" command has a "-x" option that lists entries by lines (the way
git.c used to): if somebody wants to do that, the new print-out logic
could be easily accomodated to that too. Matter of taste and preference, I
guess.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-18 13:53:40 -08:00
Linus Torvalds ea77e675e5 Make "git help" react to window size correctly
Currently the git "show commands" function will react to the environment
variable COLUMNS, or just default to a width of 80 characters.

That's just soo eighties. Nobody sane sets COLUMNS any more, unless they
need to support some stone-age software from before the age of steam
engines, SIGWINCH and TIOCGWINSZ.

So get with the new century, and use TIOCGWINSZ to get the terminal size.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-18 13:53:33 -08:00
Junio C Hamano 4050c0df8e Clean up compatibility definitions.
This attempts to clean up the way various compatibility
functions are defined and used.

 - A new header file, git-compat-util.h, is introduced.  This
   looks at various NO_XXX and does necessary function name
   replacements, equivalent of -Dstrcasestr=gitstrcasestr in the
   Makefile.

 - Those function name replacements are removed from the Makefile.

 - Common features such as usage(), die(), xmalloc() are moved
   from cache.h to git-compat-util.h; cache.h includes
   git-compat-util.h itself.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-05 15:50:29 -08:00
Junio C Hamano b270c634b7 git.c: remove excess output for debugging when command is too long.
When the given command name was too long, we exited with a
message with the number of bytes of the final command name
inside parentheses, without saying what that number is.  It was
only meant as a debugging aid while development, so remove it.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-04 23:19:31 -08:00
Junio C Hamano 9a79c5a8b4 git.c: two fixes, gitsetenv type and off-by-one error.
gitsetenv as implemented in compat/setenv.c takes two const char*
and int; match that.

Also fix an incorrect attempt in prepend_to_path() to
NUL-terminate the string which stuffed the NUL character at one
past the end of allocation, and was not needed to begin with (we
copy the old_path string including the NUL which terminates it).

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-04 14:59:58 -08:00
Jason Riedy e40b61fb6b Add compat/setenv.c, use in git.c.
There is no setenv() in Solaris 5.8.  The trivial calls to
setenv() were replaced by putenv() in a much earlier patch,
but setenv() was used again in git.c.  This patch just adds
a compat/setenv.c.

The rule for building git$(X) also needs to include compat.
objects and compiler flags.  Those are now in makefile vars
COMPAT_OBJS and COMPAT_CFLAGS.

Signed-off-by: E. Jason Riedy <ejr@cs.berkeley.edu>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-03 22:25:25 -08:00
Alex Riesen 10b15b86f5 git wrapper: more careful argument stuffing
- Use stderr for error output
 - Build git_command more careful
 - ENOENT is good enough for check of failed exec to show usage, no
   access() check needed

[jc: Originally from Alex Riesen with inputs from Sven
 Verdoolaege mixed in.]

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-01 17:06:37 -08:00
YOSHIFUJI Hideaki / 吉藤英明 874fbc3323 Fix a warning about unused value.
Fix a warning:
  git.c:276: warning: value computed is not used

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-25 03:38:41 -08:00
Junio C Hamano f9039f30d5 Do not show .exe in git command list.
Truncate the result from readdir() in the exec-path if they end
with .exe, to make it a bit more readable on Cygwin.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-18 15:40:22 -08:00
Junio C Hamano 7dbc2c0402 git wrapper: basic fixes.
Updates to fix the nits found during the list discussion.

 - Lose PATH_TO_MAN; just rely on execlp() to find whereever the
   "man" command is installed.

 - Do not randomly chdir(), but concatenate to the current
   working directory only if the given path is not absolute.

 - Lose use of glob(); read from exec_path and do sorting
   ourselves -- it is not that much more work.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-15 23:13:30 -08:00
Andreas Ericsson 97fc6c5fba git --help COMMAND brings up the git-COMMAND man-page.
It's by design a bit stupid (matching ^git rather than ^git-), so as
to work with 'gitk' and 'git' as well.

Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-15 16:03:00 -08:00
Andreas Ericsson 8e49d50388 C implementation of the 'git' program, take two.
This patch provides a C implementation of the 'git' program and
introduces support for putting the git-* commands in a directory
of their own. It also saves some time on executing those commands
in a tight loop and it prints the currently available git commands
in a nicely formatted list.

The location of the GIT_EXEC_PATH (name discussion's closed, thank gods)
can be obtained by running

	git --exec-path

which will hopefully give porcelainistas ample time to adapt their
heavy-duty loops to call the core programs directly and thus save
the extra fork() / execve() overhead, although that's not really
necessary any more.

The --exec-path value is prepended to $PATH, so the git-* programs
should Just Work without ever requiring any changes to how they call
other programs in the suite.

Some timing values for 10000 invocations of git-var >&/dev/null:
	git.sh: 24.194s
	git.c:   9.044s
	git-var: 7.377s

The git-<tab><tab> behaviour can, along with the someday-to-be-deprecated
git-<command> form of invocation, be indefinitely retained by adding
the following line to one's .bash_profile or equivalent:

	PATH=$PATH:$(git --exec-path)

Experimental libraries can be used by either setting the environment variable
GIT_EXEC_PATH, or by using

	git --exec-path=/some/experimental/exec-path

Relative paths are properly grok'ed as exec-path values.

Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-15 16:02:57 -08:00