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When we want to get the list of modified files, we first
expand any user-provided pathspecs with "ls-files", and then
feed the resulting list of paths as arguments to
"diff-index" and "diff-files". If your pathspec expands into
a large number of paths, you may run into one of two
problems:
1. The OS may complain about the size of the argument
list, and refuse to run. For example:
$ (ulimit -s 128 && git add -p drivers)
Can't exec "git": Argument list too long at .../git-add--interactive line 177.
Died at .../git-add--interactive line 177.
That's on the linux.git repository, which has about 20K
files in the "drivers" directory (none of them modified
in this case). The "ulimit -s" trick is necessary to
show the problem on Linux even for such a gigantic set
of paths. Other operating systems have much smaller
limits (e.g., a real-world case was seen with only 5K
files on OS X).
2. Even when it does work, it's really slow. The pathspec
code is not optimized for huge numbers of paths. Here's
the same case without the ulimit:
$ time git add -p drivers
No changes.
real 0m16.559s
user 0m53.140s
sys 0m0.220s
We can improve this by skipping "ls-files" completely, and
just feeding the original pathspecs to the diff commands.
This solution was discussed in 2010:
http://public-inbox.org/git/20100105041438.GB12574@coredump.intra.peff.net/
but at the time the diff code's pathspecs were more
primitive than those used by ls-files (e.g., they did not
support globs). Making the change would have caused a
user-visible regression, so we didn't.
Since then, the pathspec code has been unified, and the diff
commands natively understand pathspecs like '*.c'.
This patch implements that solution. That skips the
argument-list limits, and the result runs much faster:
$ time git add -p drivers
No changes.
real 0m0.149s
user 0m0.116s
sys 0m0.080s
There are two new tests. The first just exercises the
globbing behavior to confirm that we are not causing a
regression there. The second checks the actual argument
behavior using GIT_TRACE. We _could_ do it with the "ulimit
-s" trick, as above. But that would mean the test could only
run where "ulimit -s" works. And tests of that sort are
expensive, because we have to come up with enough files to
actually bust the limit (we can't just shrink the "128" down
infinitely, since it is also the in-program stack size).
Finally, two caveats and possibilities for future work:
a. This fixes one argument-list expansion, but there may
be others. In fact, it's very likely that if you run
"git add -i" and select a large number of modified
files that the script would try to feed them all to a
single git command.
In practice this is probably fine. The real issue here
is that the argument list was growing with the _total_
number of files, not the number of modified or selected
files.
b. If the repository contains filenames with literal wildcard
characters (e.g., "foo*"), the original code expanded
them via "ls-files" and then fed those wildcard names
to "diff-index", which would have treated them as
wildcards. This was a bug, which is now fixed (though
unless you really go through some contortions with
":(literal)", it's likely that your original pathspec
would match whatever the accidentally-expanded wildcard
would anyway).
So this takes us one step closer to working correctly
with files whose names contain wildcard characters, but
it's likely that others remain (e.g., if "git add -i"
feeds the selected paths to "git add").
Reported-by: Wincent Colaiuta <win@wincent.com>
Reported-by: Mislav Marohnić <mislav.marohnic@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc update.
* ps/doc-gc-aggressive-depth-update:
docs/git-gc: fix default value for `--aggressiveDepth`
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Doc update.
* bc/worktree-doc-fix-detached:
Documentation: correctly spell git worktree --detach
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Doc update.
* dr/doc-check-ref-format-normalize:
git-check-ref-format: clarify documentation for --normalize
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Doc update.
* gp/document-dotfiles-in-templates-are-not-copied:
init: document dotfiles exclusion on template copy
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Doc update.
* rt/align-add-i-help-text:
git add -i: replace \t with blanks in the help message
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Doc update.
* bc/blame-doc-fix:
Documentation: use brackets for optional arguments
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In commit 07e7dbf0d (gc: default aggressive depth to 50, 2016-08-11),
the default aggressive depth of git-gc has been changed to 50. While
git-config(1) has been updated to represent the new default value,
git-gc(1) still mentions the old value. This patch fixes it.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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l10n-2.12.0-rnd2
* tag 'l10n-2.12.0-rnd2' of git://github.com/git-l10n/git-po: (22 commits)
l10n: zh_CN: for git v2.12.0 l10n round 2
l10n: Update Catalan translation
l10n: pt_PT: update Portuguese tranlation
l10n: sv.po: Update Swedish translation (3139t0f0u)
l10n: de.po: translate 241 messages
l10n: ko.po: Update Korean translation
l10n: vi.po (3139t): Updated 2 new messages for rc1
l10n: fr.po: v2.12.0 round 2 3139t
l10n: git.pot: v2.12.0 round 2 (2 new)
l10n: vi.po: Updated Vietnamese translation (3137t)
l10n: update Catalan translation
l10n: sv.po: Update Swedish translation (3137t0f0u)
l10n: fr.po: v2.11-rc0 first round
l10n: ko.po: Update Korean translation
l10n: fr.po: Fix a typo in the French translation
l10n: fr.po: Remove gender specific adjectives
l10n: fr.po: Fix typos
l10n: git.pot: v2.12.0 round 1 (239 new, 15 removed)
l10n: bg: Updated Bulgarian translation (2913t+0f+0u)
l10n: fixes to Catalan translation
...
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Translate 241 messages (3139t0f0u) for git v2.12.0-rc1.
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
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Signed-off-by: Jordi Mas <jmas@softcatala.org>
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Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
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Within the help message of 'git add -i', the 'diff' command uses one
tab character and blanks to create the space between the name and the
description while the others use blanks only. So if the tab size is
not at 4 characters, this description will not be in range.
Replace the tab character with blanks.
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The documentation for git blame used vertical bars for optional
arguments to -M and -C, which is unusual and potentially confusing.
Since most man pages use brackets for optional items, and that's
consistent with how we document the same options for git diff and
friends, use brackets here, too.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The option is “--detach”, but we accidentally spelled it “--detached” at
one point in the man page.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Reported-by: Casey Rodarmor <casey@rodarmor.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use of 'iff' may be confusing to people not familiar with this term.
Improving the --normalize option's documentation to remove the use of
'iff', and clearly describe what happens when the condition is not met.
Signed-off-by: Damien Regad <dregad@mantisbt.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* 'master' of git://github.com/nafmo/git-l10n-sv:
l10n: sv.po: Update Swedish translation (3139t0f0u)
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* 'svn-escape-backslash' of git://bogomips.org/git-svn:
git-svn: escape backslashes in refnames
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Signed-off-by: Peter Krefting <peter@softwolves.pp.se>
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Translate 241 messages came from git.pot update in 673bfad09
(l10n: git.pot: v2.12.0 round 1 (239 new, 15 removed)) and a4d94835a
(l10n: git.pot: v2.12.0 round 2 (2 new)).
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Acked-by: Phillip Sz <phillip.szelat@gmail.com>
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* 'ko/merge-l10n' of https://github.com/changwoo/git-l10n-ko:
l10n: ko.po: Update Korean translation
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* 'master' of https://github.com/vnwildman/git:
l10n: vi.po (3139t): Updated 2 new messages for rc1
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Signed-off-by: Changwoo Ryu <cwryu@debian.org>
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Signed-off-by: Tran Ngoc Quan <vnwildman@gmail.com>
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Not just . and .., but any path that begins with dot is not copied
when copying the template directory to a new repository. You can
customize the template directory, copying some dotfiles might make
sense, but it's actually a good thing not to, because you would not
want to have your git directory copied in every git directory that
is created should you decide to put your template directory under
version control, for example. Plus, it might be used as a feature
by people who would want to exclude some files.
Signed-off-by: Grégoire Paris <postmaster@greg0ire.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Jean-Noel Avila <jn.avila@free.fr>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Generate po/git.pot from v2.12.0-rc1 for git v2.12.0 l10n round 2.
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
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* 'master' of git://github.com/git-l10n/git-po:
l10n: vi.po: Updated Vietnamese translation (3137t)
l10n: update Catalan translation
l10n: sv.po: Update Swedish translation (3137t0f0u)
l10n: fr.po: v2.11-rc0 first round
l10n: ko.po: Update Korean translation
l10n: fr.po: Fix a typo in the French translation
l10n: fr.po: Remove gender specific adjectives
l10n: fr.po: Fix typos
l10n: git.pot: v2.12.0 round 1 (239 new, 15 removed)
l10n: bg: Updated Bulgarian translation (2913t+0f+0u)
l10n: fixes to Catalan translation
l10n: zh_CN: review for git v2.11.0 l10n
l10n: New Catalan translation maintainer
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* 'master' of https://github.com/vnwildman/git:
l10n: vi.po: Updated Vietnamese translation (3137t)
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* 'master' of https://github.com/Softcatala/git-po:
l10n: update Catalan translation
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Signed-off-by: Tran Ngoc Quan <vnwildman@gmail.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* jk/tempfile-ferror-fclose-confusion:
tempfile: avoid "ferror | fclose" trick
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Doc fix.
* dp/submodule-doc-markup-fix:
config.txt: fix formatting of submodule.alternateErrorStrategy section
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Doc update.
* jk/reset-to-break-a-commit-doc-updated:
reset: add an example of how to split a commit into two
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Doc update.
* jk/reset-to-break-a-commit-doc:
Revert "reset: add an example of how to split a commit into two"
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A hotfix for a topic already in 'master'.
* js/mingw-isatty:
mingw: make stderr unbuffered again
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Code clean-up.
* rs/strbuf-cleanup-in-rmdir-recursively:
rm: reuse strbuf for all remove_dir_recursively() calls, again
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"ls-files" run with pathspec has been micro-optimized to avoid
having to memmove(3) unnecessary bytes.
* rs/ls-files-partial-optim:
ls-files: move only kept cache entries in prune_cache()
ls-files: pass prefix length explicitly to prune_cache()
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A new coccinelle rule that catches a check of !pointer before the
pointer is free(3)d, which most likely is a bug.
* rs/cocci-check-free-only-null:
cocci: detect useless free(3) calls
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When "git p4" imports changelist that removes paths, it failed to
convert pathnames when the p4 used encoding different from the one
used on the Git side. This has been corrected.
* ls/p4-path-encoding:
git-p4: fix git-p4.pathEncoding for removed files
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The current code wants to record an error condition from
either ferror() or fclose(), but makes sure that we always
call both functions. So it can't use logical-OR "||", which
would short-circuit when ferror() is true. Instead, it uses
bitwise-OR "|" to evaluate both functions and set one or
more bits in the "err" flag if they reported a failure.
Unlike logical-OR, though, bitwise-OR does not introduce a
sequence point, and the order of evaluation for its operands
is unspecified. So a compiler would be free to generate code
which calls fclose() first, and then ferror() on the
now-freed filehandle.
There's no indication that this has happened in practice,
but let's write it out in a way that follows the standard.
Noticed-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add missing `::` after the title.
Signed-off-by: David Pursehouse <dpursehouse@collab.net>
Acked-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It is often useful to break a commit into multiple parts that are more
logical separations. This can be tricky to learn how to do without the
brute-force method if re-writing code or commit messages from scratch.
Add a section to the git-reset documentation which shows an example
process for how to use git add -p and git commit -c HEAD@{1} to
interactively break a commit apart and re-use the original commit
message as a starting point when making the new commit message.
Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This reverts commit 7326451bedaa67d29afe02184b166e28d9393c91; a
better rewrite will be queued separately.
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Signed-off-by: Jordi Mas <jmas@softcatala.org>
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The documentation explained what "git stash" does to the working
tree (after stashing away the local changes) in terms of "reset
--hard", which was exposing an unnecessary implementation detail.
* tg/stash-doc-cleanup:
Documentation/stash: remove mention of git reset --hard
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Jeff King
Junio C Hamano
Patrick Steinhardt
Jiang Xin
Jordi Mas
Vasco Almeida
Ralf Thielow
brian m. carlson
Damien Regad
Peter Krefting
Changwoo Ryu
Tran Ngoc Quan
Grégoire Paris
Jean-Noel Avila
David Pursehouse
Jacob Keller