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Author SHA1 Message Date
Masatake Osanai
48d9e6ae4b perl: command_bidi_pipe() method should set-up git environmens
When command_input_pipe and command_output_pipe are used as a
method of a Git::repository instance, they eventually call into
_cmd_exec method that sets up the execution environment such as
GIT_DIR, GIT_WORK_TREE environment variables and the current
working directory in the child process that interacts with the
repository.

command_bidi_pipe however didn't expect to be called as such, and
lacked all these set-up.  Because of this, a program that did this
did not work as expected:

    my $repo = Git->repository(Directory => '/some/where/else');
    my ($pid, $in, $out, $ctx) =
    $repo->command_bidi_pipe(qw(hash-object -w --stdin-paths));

This patch refactors the _cmd_exec into _setup_git_cmd_env that
sets up the execution environment, and makes _cmd_exec and
command_bidi_pipe to use it.

Note that unlike _cmd_exec that execv's a git command as an
external process, command_bidi_pipe is called from the main line
of control, and the execution environment needs to be restored
after open2() does its magic.

Signed-off-by: Masatake Osanai <unpush@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-14 15:28:13 -08:00
Ralf Wildenhues
1e58dba142 configure: use AC_LANG_PROGRAM consistently
Avoid warnings from Autoconf 2.68 about missing use of AC_LANG_PROGRAM
and friends.

Quoting autoconf-2.68/NEWS:

  ** The macros AC_PREPROC_IFELSE, AC_COMPILE_IFELSE, AC_LINK_IFELSE, and
     AC_RUN_IFELSE now warn if the first argument failed to use
     AC_LANG_SOURCE or AC_LANG_PROGRAM to generate the conftest file
     contents.  A new macro AC_LANG_DEFINES_PROVIDED exists if you have
     a compelling reason why you cannot use AC_LANG_SOURCE but must
     avoid the warning.

The underlying reason for that change is that AC_LANG_{SOURCE,PROGRAM}
take care to supply the previously computed set of #defines (and
include standard headers if so desired) for preprocessed languages
like C and C++.

In some cases, AC_LANG_PROGRAM is already used but not sufficiently
m4-quoted, so we just need to add another set of [quotes] to prevent
the autoconf warning from being triggered bogusly.  Quoting all
arguments (except when calling special macros that need to be expanded
before recursion) is better style, anyway.  These and more rules are
described in detail in 'info Autoconf "Programming in M4"'.

No change in the resulting config.mak.autogen after running
./configure intended.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-14 10:55:15 -08:00
Jeff King
62b8102c60 string_list_append: always set util pointer to NULL
It is not immediately obvious that the util field may
contain random bytes after appending an item. Especially
since the string_list_insert* functions _do_ explicitly zero
the util pointer.

This does not appear to be a bug in any current git code, as
all callers either fill in the util field immediately or
never use it. However, it is worth it to be less surprising
to new users of the string-list API who may expect it to be
intialized to NULL.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-14 10:55:03 -08:00
Jonathan Nieder
dab0d4108d correct type of EMPTY_TREE_SHA1_BIN
Functions such as hashcmp that expect a binary SHA-1 value take
parameters of type "unsigned char *" to avoid accepting a textual
SHA-1 passed by mistake.  Unfortunately, this means passing the string
literal EMPTY_TREE_SHA1_BIN requires an ugly cast.  Tweak the
definition of EMPTY_TREE_SHA1_BIN to produce a value of more
convenient type.

In the future the definition might change to

	extern const unsigned char empty_tree_sha1_bin[20];
	#define EMPTY_TREE_SHA1_BIN empty_tree_sha1_bin

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-14 10:48:06 -08:00
Ian Wienand
3952710bfa Obey p4 views when using client spec
When using the p4 client spec, this attempts to obey the client's
output preferences.

For example, a view like

//depot/foo/branch/... //client/branch/foo/...
//depot/bar/branch/... //client/branch/bar/...

will result in a directory layout in the git tree of

branch/
branch/foo
branch/bar

p4 can do various other reordering that this change doesn't support,
but we should detect it and at least fail nicely.

Signed-off-by: Ian Wienand <ianw@vmware.com>
Acked-by: Pete Wyckoff <pw@padd.com>
Acked-by: Tor Arvid Lund <torarvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-14 10:34:49 -08:00
Heiko Voigt
69e21b8392 git-gui: teach fetch/prune menu to do it for all remotes
The commandline fetch already has this option for some time.  Since this
was not available at the time git gui was written lets implement it now.

Signed-off-by: Heiko Voigt <heiko.voigt@mahr.de>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
2011-02-14 12:15:36 +00:00
Heiko Voigt
e8db4035df git-gui: refactor remote submenu creation into subroutine
Signed-off-by: Heiko Voigt <heiko.voigt@mahr.de>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
2011-02-14 12:10:54 +00:00
Ævar Arnfjörð Bjarmason
cbef0db6cc gitignore: add test-mktemp to ignore list
Change the .gitignore to ignore test-mktemp which is built from
test-mktemp.c. Arnout Engelen added this in 6cf6bb3 (Improve error
messages when temporary file creation fails, 2010-12-18) but forgot
to add a corresponding entry to .gitignore.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-13 15:15:08 -08:00
René Scharfe
6390c905dc repo-config: add deprecation warning
repo-config was deprecated in 5c66d0d4 on 2008-01-17.  Warn the
remaining users that it has been replaced by config and is going to
be removed eventually.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-13 15:13:41 -08:00
Heiko Voigt
9d04278a4d git-gui: always default to the last merged branch in remote delete
This is useful if you are directly working together with other
developers pushing feature branches on a shared remote. You typically
push feature branches to the remote so others can review. Once they are
satisfied and the branch is merged into the main branch it needs to be
deleted on the server.

Since we did not yet have a preselected default branch in the remote
delete dialog lets use the last merged branch if it is found on the
server.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
2011-02-13 00:47:24 +00:00
Heiko Voigt
8b92658206 git-gui: fix deleting item from all_remotes variable
lsearch and lreplace both take the variable content as argument and not
just their name.

Signed-off-by: Heiko Voigt <heiko.voigt@mahr.de>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
2011-02-13 00:47:19 +00:00
Junio C Hamano
00e6ee7246 Merge branch 'maint'
* maint:
  Git 1.7.4.1
  clone: fixup recurse_submodules option
  svn-fe: warn about experimental status

Conflicts:
	contrib/examples/git-revert.sh
	contrib/svn-fe/svn-fe.txt
2011-02-11 16:01:47 -08:00
Junio C Hamano
9971d6d52c Git 1.7.4.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-11 14:39:55 -08:00
Junio C Hamano
b76bf72428 Merge branch 'jc/fsck-fixes' into maint
* jc/fsck-fixes:
  fsck: do not give up too early in fsck_dir()
  fsck: drop unused parameter from traverse_one_object()
2011-02-11 14:26:10 -08:00
Chris Packham
3446a54c9a clone: fixup recurse_submodules option
The recurse_submodules option was added in ccdd3da6 to bring 'git clone'
into line with 'git fetch' and future commands. The correct option should
have been "recurse-submodules".

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-11 14:24:34 -08:00
Jonathan Nieder
75323459b8 svn-fe: warn about experimental status
svn-fe is young and some coming cleanups might involve backward
incompatible UI changes.  Add some words of warning to the manual so
early adopters that are not following the project closely don't get
burned.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-11 10:13:14 -08:00
Junio C Hamano
b308bf1863 Merge branch 'maint'
* maint:
  compat: helper for detecting unsigned overflow
2011-02-10 14:45:55 -08:00
Martin von Zweigbergk
15a147e618 rebase: use @{upstream} if no upstream specified
'git rebase' without arguments is currently not supported. Make it
default to 'git rebase @{upstream}'. That is also what 'git pull
[--rebase]' defaults to, so it only makes sense that 'git rebase'
defaults to the same thing.

Defaulting to @{upstream} will make it possible to run e.g. 'git
rebase -i' without arguments, which is probably a quite common use
case. It also improves the scenario where you have multiple branches
that rebase against a remote-tracking branch, where you currently have
to choose between the extra network delay of 'git pull' or the
slightly awkward keys to enter 'git rebase @{u}'.

The error reporting when no upstream is configured for the current
branch or when no branch is checked out is reused from git-pull.sh. A
function is extracted into git-parse-remote.sh for this purpose.

Helped-by: Yann Dirson <ydirson@altern.org>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:45:25 -08:00
Martin von Zweigbergk
c71f8f3d50 rebase -i: remove unnecessary state rebase-root
Before calling 'git cherry-pick', interactive rebase currently checks
if we are rebasing from root (if --root was passed). If we are, the
'--ff' flag to 'git cherry-pick' is omitted. However, according to the
documentation for 'git cherry-pick --ff', "If the current HEAD is the
same as the parent of the cherry-picked commit, then a fast forward to
this commit will be performed.". This should never be the case when
rebasing from root, so it should not matter whether --ff is passed, so
simplify the code by removing the condition.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:10 -08:00
Martin von Zweigbergk
c6f7de5455 rebase -i: don't read unused variable preserve_merges
Since 8e4a91b (rebase -i: remember the settings of -v, -s and -p when
interrupted, 2007-07-08), the variable preserve_merges (then called
PRESERVE_MERGES) was detected from the state saved in
$GIT_DIR/rebase-merge in order to be used when the rebase resumed, but
its value was never actually used. The variable's value was only used
when the rebase was initated.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:10 -08:00
Martin von Zweigbergk
c5e610be50 git-rebase--am: remove unnecessary --3way option
Since 22db240 (git-am: propagate --3way options as well, 2008-12-04),
the --3way has been propageted across failure, so it is since
pointless to pass it to git-am when resuming.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:10 -08:00
Martin von Zweigbergk
b325680930 rebase -m: don't print exit code 2 when merge fails
When the merge strategy fails, a message suggesting the user to try
another strategy is displayed. Remove the "$rv" (which is always equal
to "2" in this case) from that message.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
b3e4847e50 rebase -m: remember allow_rerere_autoupdate option
If '--[no-]allow_rerere_autoupdate' is passed when 'git rebase -m' is
called and a merge conflict occurs, the flag will be forgotten for the
rest of the rebase process. Make rebase remember it by saving the
value.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
80ff47957b rebase: remember strategy and strategy options
When a rebase is resumed, interactive rebase remembers any merge
strategy passed when the rebase was initated. Make non-interactive
rebase remember any merge strategy as well. Also make non-interactive
rebase remember any merge strategy options.

To be able to resume a rebase that was initiated with an older version
of git (older than this commit), make sure not to expect the saved
option files to exist.

Test case idea taken from Junio's 71fc224 (t3402: test "rebase
-s<strategy> -X<opt>", 2010-11-11).

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
7b37a7c620 rebase: remember verbose option
Currently, only interactive rebase remembers the value of the '-v'
flag from the initial invocation. Make non-interactive rebase also
remember it.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
84df4560ed rebase: extract code for writing basic state
Extract the code for writing the state to rebase-apply/ or
rebase-merge/ when a rebase is initiated. This will make it easier to
later make both interactive and non-interactive rebase remember the
options used.

Note that non-interactive rebase stores the sha1 of the original head
in a file called orig-head, while interactive rebase stores it in a
file called head. Change this by writing to orig-head in both
cases. When reading, try to read from orig-head. If that fails, read
from head instead. This protects users who upgraded git while they had
an ongoing interactive rebase, while still making it possible to
remove the code that reads from head at some point in the future.

Helped-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
2959c28366 rebase: factor out sub command handling
Factor out the common parts of the handling of the sub commands
'--continue', '--skip' and '--abort'. The '--abort' handling can
handled completely in git-rebase.sh.

After this refactoring, the calls to git-rebase--am.sh,
git-rebase--merge.sh and git-rebase--interactive.sh will be better
aligned. There will only be one call to interactive rebase that will
shortcut the very last part of git-rebase.sh.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
4974c2caa2 rebase: make -v a tiny bit more verbose
To make it possible to later remove the handling of --abort from
git-rebase--interactive.sh, align the implementation in git-rebase.sh
with the former by making it a bit more verbose.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
431b7e7818 rebase -i: align variable names
Rename variables HEAD and OLDHEAD to orig_head and HEADNAME to
head_name, which are the names used in git-rebase.sh. This prepares
for factoring out of the code that persists these variables during the
entire rebase process. Using the same variable names to mean the same
thing in both files also makes the code easier to read.

While at it, also remove the DOTEST variable and use the state_dir
variable that was inherited from git-rebase.sh instead.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
89c7ae9c3b rebase: show consistent conflict resolution hint
When rebase stops due to conflict, interactive rebase currently
displays a different hint to the user than non-interactive rebase
does. Use the same message for both types of rebase.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
46df82d5fa rebase: extract am code to new source file
Extract the code for am-based rebase to git-rebase--am.sh.

Suggested-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
fa99c1e1e1 rebase: extract merge code to new source file
Extract the code for merge-based rebase to git-rebase--merge.sh.

Suggested-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
cb82a05d5e rebase: remove $branch as synonym for $orig_head
The variables $branch and $orig_head were used as synonyms. To avoid
confusion, remove $branch. The name 'orig_head' seems more suitable,
since that is the name used when the variable is persisted.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:09 -08:00
Martin von Zweigbergk
f4107d9cdc rebase -i: support --stat
Move up the code that displays the diffstat if '--stat' is passed, so
that it will be executed before calling git-rebase--interactive.sh.

A side effect is that the diffstat is now displayed before "First,
rewinding head to replay your work on top of it...".

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
cc1453e1da rebase: factor out call to pre-rebase hook
Remove the call to the pre-rebase hook from
git-rebase--interactive.sh and rely on the call in
git-rebase.sh.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
caf038cb4e rebase: factor out clean work tree check
Remove the check for clean work tree from git-rebase--interactive.sh and
rely on the check in git-rebase.sh.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
71786f54c4 rebase: factor out reference parsing
Remove the parsing and validation of references (onto, upstream, branch)
from git-rebase--interactive.sh and rely on the information exported from
git-rebase.sh.

By using the parsing of the --onto parameter in git-rebase.sh, this
improves the error message when the parameter is invalid.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
8f9bfb64c5 rebase: reorder validation steps
Reorder validation steps in preparation for the validation to be factored
out from git-rebase--interactive.sh into git-rebase.sh.

The main functional difference is that the pre-rebase hook will no longer
be run if the work tree is dirty.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
f3889b8401 rebase -i: remove now unnecessary directory checks
Remove directory checks from git-rebase--interactive.sh that are done in
git-rebase.sh.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
cf432ca051 rebase: factor out command line option processing
Factor out the command line processing in git-rebase--interactive.sh
to git-rebase.sh. Store the options in variables in git-rebase.sh and
then source git-rebase--interactive.sh.

Suggested-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
9765b6abeb rebase: align variable content
Make sure to interpret variables with the same name in the same way in
git-rebase.sh and git-rebase--interactive.sh. This will make it easier
to factor out code from git-rebase.sh to git-rebase--interactive and
export the variables.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
6bb4e485cf rebase: align variable names
git-rebase--interactive.sh will soon be sourced from
git-rebase.sh. Align the names of variables used in these scripts to
prepare for that.

Some names in git-rebase--interactive.sh, such as "author_script" and
"amend", are currently used in their upper case form to refer to a
file and in their lower case form to refer to something else. In these
cases, change the name of the existing lower case variable and
downcase the name of the variable that refers to the file.

Currently, git-rebase.sh uses mostly lower case variable names, while
git-rebase--interactive.sh uses mostly upper case variable names. For
consistency, downcase all variables, not just the ones that will be
shared between the two script files.

Helped-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
95135b06fe rebase: stricter check of standalone sub command
The sub commands '--continue', '--skip' or '--abort' may only be used
standalone according to the documentation. Other options following the
sub command are currently not accepted, but options preceeding them
are. For example, 'git rebase --continue -v' is not accepted, while
'git rebase -v --continue' is. Tighten up the check and allow no other
options when one of these sub commands are used.

Only check that it is standalone for non-interactive rebase for
now. Once the command line processing for interactive rebase has been
replaced by the command line processing in git-rebase.sh, this check
will also apply to interactive rebase.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
3426232248 rebase: act on command line outside parsing loop
To later be able to use the command line processing in git-rebase.sh
for both interactive and non-interactive rebases, move anything that
is specific to non-interactive rebase outside of the parsing
loop. Keep only parsing and validation of command line options in the
loop.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
99de0640f2 rebase: improve detection of rebase in progress
Detect early on if a rebase is in progress and what type of rebase it
is (interactive, merge-based or am-based). This prepares for further
refactoring where am-based rebase will be dispatched to
git-rebase--am.sh and merge-based rebase will be dispatched to
git-rebase--merge.sh.

The idea is to use the same variables whether the type of rebase was
detected from rebase-apply/ or rebase-merge/ directories or from the
command line options. This will make the code more readable and will
later also make it easier to dispatch to the type-specific scripts.

Also show a consistent error message independent of the type of rebase
that was in progress and remove the obsolete wording about being in
the middle of a 'patch application', since that (an existing
"$GIT_DIR"/rebase-apply/applying) aborts 'git rebase' at an earlier
stage.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
dc4a4b7387 rebase: remove unused rebase state 'prev_head'
The state stored in $GIT_DIR/rebase-merge/prev_head was introduced in
58634db (rebase: Allow merge strategies to be used when rebasing,
2006-06-21), but it was never used and should therefore be removed.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:08 -08:00
Martin von Zweigbergk
10ffca7db2 rebase: read state outside loop
The 'onto_name' state used in 'git rebase --merge' is currently read
once for each commit that need to be applied. It doesn't change
between each iteration, however, so it should be moved out of the
loop. This also makes the code more readable. Also remove the unused
variable 'end'.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:07 -08:00
Martin von Zweigbergk
02ac45fa62 rebase: refactor reading of state
The code reading the state saved in $merge_dir or $rebase_dir is
currently spread out in many places, making it harder to read and to
introduce additional state. Extract this code into one method that
reads the state. Only extract the code associated with the state that
is written when the rebase is initiated. Leave the state that changes
for each commmit, at least for now.

Currently, when resuming a merge-based rebase using --continue or
--skip, move_to_original_branch (via finish_rb_merge) will be called
without head_name and orig_head set. These variables are then lazily
read in move_to_original_branch if head_name is not set (together with
onto, which is unnecessarily read again). Change this by always
eagerly reading the state, for both am-based and merge-based rebase,
in the --continue and --skip cases. Note that this does not change the
behavior for am-based rebase, which read the state eagerly even before
this commit.

Reading the state eagerly means that part of the state will sometimes
be read unnecessarily. One example is when the rebase is continued,
but stops again at another merge conflict. Another example is when the
rebase is aborted. However, since both of these cases involve user
interaction, the delay is hopefully not noticeable. The
call_merge/continue_merge loop is not affected.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:07 -08:00
Martin von Zweigbergk
69a636ad1a rebase: clearer names for directory variables
Instead of using the old variable name 'dotest' for
"$GIT_DIR"/rebase-merge and no variable for "$GIT_DIR"/rebase-apply,
introduce two variables 'merge_dir' and 'apply_dir' for these paths.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 14:08:07 -08:00
Jonathan Nieder
1368f65002 compat: helper for detecting unsigned overflow
The idiom (a + b < a) works fine for detecting that an unsigned
integer has overflowed, but a more explicit

	unsigned_add_overflows(a, b)

might be easier to read.

Define such a macro, expanding roughly to ((a) < UINT_MAX - (b)).
Because the expansion uses each argument only once outside of sizeof()
expressions, it is safe to use with arguments that have side effects.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-10 13:47:56 -08:00