* tc/checkout-B:
builtin/checkout: handle -B from detached HEAD correctly
builtin/checkout: learn -B
builtin/checkout: reword hint for -b
add tests for checkout -b
When mergetool is run without path limiters it loops
over each entry in 'git ls-files -u'. This includes
autoresolved paths.
Teach mergetool to only merge files listed in 'rerere status'
when rerere is enabled.
There are some subtle but harmless changes in behavior.
We now call cd_to_toplevel when no paths are given.
We do this because 'rerere status' paths are always relative
to the root. This is beneficial for the non-rerere use as
well in that mergetool now runs against all unmerged files
regardless of the current directory.
This also slightly tweaks the output when run without paths
to be more readable.
The old output:
Merging the files: foo
bar
baz
The new output:
Merging:
foo
bar
baz
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since commit 2f82f760 (Take binary diffs into
account for "git rebase"), binary files are
included in patch ID computation. Binary files are
diffed using the text diff algorithm, however,
which has a huge impact on performance. The
following tests performance for a 50000 line file
marked as binary in .gitattributes.
$ git format-patch --stdout --ignore-if-in-upstream master
real 0m0.367s
user 0m0.354s
sys 0m0.010s
Instead of diffing the binary files, hash the pre-
and post-image sha1, which is just as unique. As a
result, performance is much improved.
$ git format-patch --stdout --ignore-if-in-upstream master
real 0m0.016s
user 0m0.015s
sys 0m0.001s
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add userdiff patterns for C#. This code is an improved version of
code by Adam Petaccia from 21 June 2009 mail to the list.
Signed-off-by: Petr Onderka <gsvick@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "git bundle unbundle" and "git config" pagination tests are not
supposed to run when stdout is not a terminal and IO::Pty not available
to make one on the fly.
Reported-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As v1.6.1-rc1~294^2 (2008-08-23) explains, custom merge strategies
do not even kick in when the merge is truly trivial. But they
should, since otherwise a custom “--strategy=theirs” is not useful.
Perhaps custom strategies should not allow fast-forward either. This
patch does not make that change, since it is less important (because
it is always possible to explicitly use --no-ff).
Reported-by: Yaroslav Halchenko <debian@onerussian.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Guard setup commands with test_expect_success, so they are easier
to visually skip over and get to the good part. While at it:
- use test_commit for brevity and reproducible object names;
- use test_cmp instead of using the test builtin to compare the
result of command substitution, for better output with -v on
failure.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Part of a campaign to make repository-local configuration
available early (simplifying the startup sequence for
built-in commands).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Part of a campaign to make repository-local configuration
available early (simplifying the startup sequence for
built-in commands).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
ls-remote already runs a repository search unconditionally to learn
about remote nicknames and "[url] insteadof" shortcuts. Run that
search a little sooner, and now one can try
[pager]
ls-remote
to automatically paginate ls-remote output, or use repository-local
[core]
pager = whatever
with "git --paginate ls-remote <url>".
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
index-pack already runs a repository search unconditionally; running
such a search earlier is not risky and ensures GIT_DIR will be set
correctly if the configuration needs to be accessed from
run_builtin().
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'jn/maint-setup-fix' (early part):
Revert "rehabilitate 'git index-pack' inside the object store"
setup: do not forget working dir from subdir of gitdir
t4111 (apply): refresh index before applying patches to it
setup: split off get_device_or_die helper
setup: split off a function to handle hitting ceiling in repo search
setup: split off code to handle stumbling upon a repository
setup: split off a function to checks working dir for .git file
setup: split off $GIT_DIR-set case from setup_git_directory_gently
tests: try git apply from subdir of toplevel
t1501 (rev-parse): clarify
For the pager choice (and the choice to paginate) to reflect the
current repository configuration, the repository needs to be
located first.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Without this change, “git -p bundle” does not always
respect the repository-local “[core] pager” setting.
It is hard to notice because subcommands other than
“git bundle unbundle” do not produce much output.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As v1.7.2~16^2 (2010-07-14) explains, without this change,
“git --paginate apply” can ignore the repository-local
“[core] pager” configuration.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a regression test for the git log -M --follow $diff_option bug
introduced in v1.7.2-rc0~103^2~2, $diff_option being diff related
options like -p, --stat, --name-only etc.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When cherry-pick fails after picking a large series of commits, it can
be hard to pick out the error message and advice. Prefix the advice
with “hint: ” to help.
Before:
error: could not apply 7ab78c9... foo
After resolving the conflicts,
mark the corrected paths with 'git add <paths>' or 'git rm <paths>'
and commit the result with:
git commit -c 7ab78c9a7898b87127365478431289cb98f8d98f
After:
error: could not apply 7ab78c9... foo
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit -c 7ab78c9'
Noticed-by: Thomas Rast <trast@student.ethz.ch>
Encouraged-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When cherry-pick fails after picking a large series of commits, it can
be hard to pick out the error message and advice. Clarify the error
and prefix it with “error: ” to help.
Before:
Automatic cherry-pick failed. [...advice...]
After:
error: could not apply 7ab78c9... Do something neat.
[...advice...]
Noticed-by: Thomas Rast <trast@student.ethz.ch>
Encouraged-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Like error(), warn(), and die(), advise() prints a short message
with a formulaic prefix to stderr.
It is local to revert.c for now because I am not sure this is
the right API (we may want to take an array of advice lines or a
boolean argument for easy suppression of unwanted advice).
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When cherry-pick was written (v0.99.6~63, 2005-08-27), “git commit”
was quiet, and the output from cherry-pick provided useful information
about the progress of a rebase.
Now next to the output from “git commit”, the cherry-pick notification
is so much noise (except for the name of the picked commit).
$ git cherry-pick ..topic
Finished cherry-pick of 499088b.
[detached HEAD 17e1ff2] Move glob module to libdpkg
Author: Guillem Jover <guillem@debian.org>
8 files changed, 12 insertions(+), 9 deletions(-)
rename {src => lib/dpkg}/glob.c (98%)
rename {src => lib/dpkg}/glob.h (93%)
Finished cherry-pick of ae947e1.
[detached HEAD 058caa3] libdpkg: Add missing symbols to Versions script
Author: Guillem Jover <guillem@debian.org>
1 files changed, 2 insertions(+), 0 deletions(-)
$
The noise is especially troublesome when sifting through the output of
a rebase or multiple cherry-pick that eventually failed.
With the commit subject, it is already not hard to figure out where
the commit came from. So drop the “Finished” message.
Cc: Christian Couder <chriscool@tuxfamily.org>
Cc: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently git-svn assumes that two tags created from the same
revision will have the same repo url, so it uses a ref to the
tag without checking that its url matches the current url.
This causes issues when fetching an svn repo where a tag was
created, deleted, and then recreated under the following
circumstances:
- Both tags were copied from the same revision.
- Both tags had the same name.
- Both tags had different repository paths.
- [Optional] Both tags have a file with the same name but
different content.
When all four conditions are met, a checksum mismatch error
occurs because the content of two files with the same path
differs (see t/t9155--git-svn-fetch-deleted-tag.sh):
Checksum mismatch: ChangeLog 065854....
expected: ce771b....
got: 9563fd....
When only the first three conditions are met, no error occurs
but the tag in git matches the first (deleted) tag instead of
the last (most recent) tag (see
t/t9156-git-svn-fetch-deleted-tag-2.sh).
The fix is to verify that the repo url for the ref matches the
current url. If the urls do not match, then a "tail" is grown
on the tag name by appending a dash and rechecking the new ref's
repo url until either a matching repo url is found or a new tag
is created.
Signed-off-by: David D. Kilzer <ddkilzer@kilzer.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
Fix a regular expression used to remove the revision from the
end of an svn tag or branch name. The regex did not account for
any "tail" (dashes) that may have been added to the end of the
tag name (which first appeared in v1.4.1-rc2~11). If not fixed,
tags with names like "tags/mytag@5--@2" may be created.
Signed-off-by: David D. Kilzer <ddkilzer@kilzer.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
The svn-fe test fails on Windows in the “svn export” step because of
the lack of symlink support. With a less ambitious dump, it passes.
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Ever since v1.6.3-rc0~101^2~14 (Tests on Windows: $(pwd) must return
Windows-style paths, 2009-03-13), there is a subtle difference between
$(pwd) and $PWD in tests: the former returns Windows-style paths as
might be output by git and the latter Unix-style paths which msys
programs tend to prefer.
In file:// URIs, Unix-style paths are needed. Before: “svn export”
declares it cannot find
file://c:/apps/git/git/t/trash directory/simple-svco
After: “svn export” successfully finds
file:///c/apps/git/git/...
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the spirit of v1.6.4-rc0~124 (MinGW: Fix compiler warning in
merge-recursive, 2009-05-23), use a 32-bit integer instead; the
dump file parser does not support any better, anyway.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
dirent is #define’d to mingw_dirent in compat/mingw.h, with the
result that
obj_pool_gen(dirent, struct repo_dirent, 4096)
creates functions with names like mingw_dirent_alloc and
references to dirent_alloc go unresolved. Rename the functions
to dent_* to avoid this problem.
Reported-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Windows does not have strtok_r (and while it does have an identical
strtok_s, but it is not obvious how to use it). Grab an
implementation from glibc.
The svn-fe tool uses strtok_r to parse paths.
Acked-by: Johannes Sixt <j6t@kdbg.org>
Helped-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Missing spaces in while (0) and trpn_pointer(a, b).
Remove parentheses around return value.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Those in the know would notice that dump file format version 2
means "svnadmin dump --no-deltas", but for the rest of us, an
explicit reminder is useful.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The svn-fe example does not litter the working directory with
.bin files any more (hoorah!).
The permissive error handling implies a known bug. We should
be flagging iffy input and, even if we continue, reporting it
on exit.
Cc: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
svndump parses data that is in SVN dumpfile format produced by
`svnadmin dump` with the help of line_buffer and uses repo_tree and
fast_export to emit a git fast-import stream.
Based roughly on com.hydrografix.svndump 0.92 from the SvnToCCase
project at <http://svn2cc.sarovar.org/>, by Stefan Hegny and
others.
[rr: allow input from files other than stdin]
[jn: with test, more error reporting]
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
repo_tree maintains the exporter's state and provides a facility to to
call fast_export, which writes objects to stdout suitable for
consumption by fast-import.
The exported functions roughly correspond to Subversion FS operations.
. repo_add, repo_modify, repo_copy, repo_replace, and repo_delete
update the current commit, based roughly on the corresponding
Subversion FS operation.
. repo_commit calls out to fast_export to write the current commit to
the fast-import stream in stdout.
. repo_diff is used by the fast_export module to write the changes
for a commit.
. repo_reset erases the exporter's state, so valgrind can be happy.
[rr: squelched compiler warnings]
[jn: removed support for maintaining state on-disk, though we may
want to add it back later]
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This library provides thread-unsafe fgets()- and fread()-like
functions where the caller does not have to supply a buffer. It
maintains a couple of static buffers and provides an API to use
them.
[rr: allow input from files other than stdin]
[jn: with tests, documentation, and error handling improvements]
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Intern strings so they can be compared by address and stored without
wasting space.
This library uses the macros in the obj_pool.h and trp.h to create a
memory pool for strings and expose an API for handling them.
[rr: added API docs]
[jn: with some API simplifications, new documentation and tests]
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Provide macros to generate a type-specific treap implementation and
various functions to operate on it. It uses obj_pool.h to store memory
nodes in a treap. Previously committed nodes are never removed from
the pool; after any *_commit operation, it is assumed (correctly, in
the case of svn-fast-export) that someone else must care about them.
Treaps provide a memory-efficient binary search tree structure.
Insertion/deletion/search are about as about as fast in the average
case as red-black trees and the chances of worst-case behavior are
vanishingly small, thanks to (pseudo-)randomness. The bad worst-case
behavior is a small price to pay, given that treaps are much simpler
to implement.
>From http://www.canonware.com/download/trp/trp_hash/trp.h
[db: Altered to reference nodes by offset from a common base pointer]
[db: Bob Jenkins' hashing implementation dropped for Knuth's]
[db: Methods unnecessary for search and insert dropped]
[rr: Squelched compiler warnings]
[db: Added support for immutable treap nodes]
[jn: Reintroduced treap_nsearch(); with tests]
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a memory pool library implemented using C macros. The
obj_pool_gen() macro creates a type-specific memory pool.
The memory pool library is distinguished from the existing specialized
allocators in alloc.c by using a contiguous block for all allocations.
This means that on one hand, long-lived pointers have to be written as
offsets, since the base address changes as the pool grows, but on the
other hand, the entire pool can be easily written to the file system.
This could allow the memory pool to persist between runs of an
application.
For the svn importer, such a facility is useful because each svn
revision can copy trees and files from any previous revision. The
relevant information for all revisions has to persist somehow to
support incremental runs.
[rr: minor cleanups]
[jn: added tests; removed file system backing for now]
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Teach the build system to build a separate library for the
upcoming subversion interop support.
The resulting vcs-svn/lib.a does not contain any code, nor is
it built during a normal build. This is just scaffolding for
later changes.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Originally, if remote.<name>.tagopt was set, the --tags and option would
have no effect when given to git fetch. So if
tagopt="--no-tags"
git fetch --tags
would not actually fetch tags.
This patch changes this behavior to only follow what is written in the
config if there is no option passed by the command line.
Signed-off-by: Daniel Johnson <ComputerDruid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace the echo statements that operate on $rest with printf's to restore
what was lost from 938791cd. This avoids any mangling that XSI-conformant
echo's may introduce.
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit cd035b1c introduced the exec command to interactive rebase. In
doing so, it modified the way that skip_unnecessary_picks iterates through
the list of rebase commands so that it avoided collapsing multiple spaces
into a single space. This is necessary for example if the argument to the
exec command contains a path with multiple spaces in it.
The way it did this was by reading each line of rebase commands into a
single variable, and then breaking the individual components out using
echo, sed, and cut. It used the individual broken-out components for
decision making, and was still able to write the original line to the
output file from the variable it had saved it in. But, since we only
really need to look at anything other than the first element of the line
when a 'pick' command is encountered, and even that is only necessary when
we are still searching for "unnecessary" picks, and since newer rebase
commands like 'exec' may not even require a sha1 field, let's make our read
statement parse its input into a "command" variable, and a "rest" variable,
and then only break out the sha1 from $rest, and call git-rev-parse, when
absolutely necessary.
I think this future proofs this subroutine, avoids calling git-rev-parse
unnecessarily, and possibly with bogus arguments, and still accomplishes
the goal of not mangling the $rest of the rebase command.
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Usually, diff frontends populate the output queue with filepairs without
any rename information and call diffcore_std() to sort the renames out.
When --follow is in effect, however, diff-tree family of frontend has a
hack that looks like this:
diff-tree frontend
-> diff_tree_sha1()
. populate diff_queued_diff
. if --follow is in effect and there is only one change that
creates the target path, then
-> try_to_follow_renames()
-> diff_tree_sha1() with no pathspec but with -C
-> diffcore_std() to find renames
. if rename is found, tweak diff_queued_diff and put a
single filepair that records the found rename there
-> diffcore_std()
. tweak elements on diff_queued_diff by
- rename detection
- path ordering
- pickaxe filtering
We need to skip parts of the second call to diffcore_std() that is related
to rename detection, and do so only when try_to_follow_renames() did find
a rename. Earlier 1da6175 (Make diffcore_std only can run once before a
diff_flush, 2010-05-06) tried to deal with this issue incorrectly; it
unconditionally disabled any second call to diffcore_std().
This hopefully fixes the breakage.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "--follow" logic is called from diff_tree_sha1() function, but the
input trees to diff_tree_sha1() are not necessarily the top-level trees
(compare_tree_entry() calls it while it recursively descends into
subtrees). When a newly created path lives in somewhere deep in the
source hierarchy, e.g. "platform/", but the rename source is in a totally
different place in the destination hierarchy, e.g. "lang-api/src/com/...",
running "try_to_find_renames()" while base is set to "platform/" is a
wasted call.
We only need to run the rename following at the very top level.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
PREFIX and INSTALL_BASE are mutually exclusive. If both are supplied
by INSTALL_BASE being set in PERL_MM_OPT ExtUtils::MakeMaker will
produce an error:
$ echo $PERL_MM_OPT
INSTALL_BASE=/home/avar/perl5
$ make -C perl PERL_PATH='/usr/bin/perl' prefix='/home/avar' perl.mak
make: Entering directory `/home/avar/g/git/perl'
/usr/bin/perl Makefile.PL PREFIX='/home/avar'
Only one of PREFIX or INSTALL_BASE can be given. Not both.
make: *** [perl.mak] Error 255
make: Leaving directory `/home/avar/g/git/perl'
Change the perl Makefile to work around this by explicitly unsetting
INSTALL_BASE.
INSTALL_BASE is set in PERL_MM_OPT by e.g. the popular local::lib
package, from its documentation:
eval $(perl -I$HOME/perl5/lib/perl5 -Mlocal::lib 2>/dev/null)
Many other environments might also have set PERL_MM_OPT before
building Git. This change enables us to build in these environments.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Prior to c85c792 (pull --rebase: be cleverer with rebased upstream
branches, 2008-01-26), pull --rebase would run
git rebase $merge_head
which resulted in a call to
git format-patch ... --ignore-if-in-upstream $merge_head..$cur_branch
This resulted in patches from $merge_head..$cur_branch being applied, as
long as they did not already exist in $cur_branch..$merge_head.
Unfortunately, when upstream is rebased, $merge_head..$cur_branch also
refers to "old" commits that have already been rebased upstream, meaning
that many patches that were already fixed upstream would be reapplied.
This could result in many spurious conflicts, as well as reintroduce
patches that were intentionally dropped upstream.
So the algorithm was changed in c85c792 (pull --rebase: be cleverer with
rebased upstream branches, 2008-01-26) and d44e712 (pull: support rebased
upstream + fetch + pull --rebase, 2009-07-19). Defining $old_remote_ref to
be the most recent entry in the reflog for @{upstream} that is an ancestor
of $cur_branch, pull --rebase was changed to run
git rebase --onto $merge_head $old_remote_ref
which results in a call to
git format-patch ... --ignore-if-in-upstream $old_remote_ref..$cur_branch
The whole point of this change was to reduce the number of commits being
reapplied, by avoiding commits that upstream already has or had.
In the rebased upstream case, this change achieved that purpose. It is
worth noting, though, that since $old_remote_ref is always an ancestor of
$cur_branch (by its definition), format-patch will not know what upstream
is and thus will not be able to determine if any patches are already
upstream; they will all be reapplied.
In the non-rebased upstream case, this new form is usually the same as the
original code but in some cases $old_remote_ref can be an ancestor of
$(git merge-base $merge_head $cur_branch)
meaning that instead of avoiding reapplying commits that upstream already
has, it actually includes more such commits. Combined with the fact that
format-patch can no longer detect commits that are already upstream (since
it is no longer told what upstream is), results in lots of confusion for
users (e.g. "git is giving me lots of conflicts in stuff I didn't even
change since my last push.")
Cases where additional commits could be reapplied include forking from a
commit other than the tracking branch, or amending/rebasing after pushing.
Cases where the inability to detect upstreamed commits cause problems
include independent discovery of a fix and having your patches get
upstreamed by some alternative route (e.g. pulling your changes to a third
machine, pushing from there, and then going back to your original machine
and trying to pull --rebase).
Fix the non-rebased upstream case by ignoring $old_remote_ref whenever it
is contained in $(git merge-base $merge_head $cur_branch). This should
have no affect on the rebased upstream case.
Acked-by: Santi Béjar <santi@agolina.net>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
