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2021-05-21diff-merges: move specific diff-index "-m" handling to diff-indexLibravatar Sergey Organov1-0/+9
Move specific handling of "-m" for diff-index to diff-index.c, so diff-merges is left to handle only diff for merges options. Being a better design by itself, this is especially essential in preparation for letting -m imply -p, as "diff-index -m" obviously should not imply -p, as it's entirely unrelated. To handle this, in addition to moving specific diff-index "-m" code out of diff-merges, we introduce new diff_merges_suppress_options_parsing() and call it before generic options processing in cmd_diff_index(). This new diff_merges_suppress_options_parsing() could then be reused and called before invocations of setup_revisions() for other commands that don't need --diff-merges options, but that's outside of the scope of these patch series. Signed-off-by: Sergey Organov <sorganov@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-02-25Merge branch 'jc/diffcore-rotate'Libravatar Junio C Hamano1-0/+2
"git {diff,log} --{skip,rotate}-to=<path>" allows the user to discard diff output for early paths or move them to the end of the output. * jc/diffcore-rotate: diff: --{rotate,skip}-to=<path>
2021-02-16diff: --{rotate,skip}-to=<path>Libravatar Junio C Hamano1-0/+2
In the implementation of "git difftool", there is a case where the user wants to start viewing the diffs at a specific path and continue on to the rest, optionally wrapping around to the beginning. Since it is somewhat cumbersome to implement such a feature as a post-processing step of "git diff" output, let's support it internally with two new options. - "git diff --rotate-to=C", when the resulting patch would show paths A B C D E without the option, would "rotate" the paths to shows patch to C D E A B instead. It is an error when there is no patch for C is shown. - "git diff --skip-to=C" would instead "skip" the paths before C, and shows patch to C D E. Again, it is an error when there is no patch for C is shown. - "git log [-p]" also accepts these two options, but it is not an error if there is no change to the specified path. Instead, the set of output paths are rotated or skipped to the specified path or the first path that sorts after the specified path. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-02-03MacOS: precompose_argv_prefix()Libravatar Torsten Bögershausen1-1/+1
The following sequence leads to a "BUG" assertion running under MacOS: DIR=git-test-restore-p Adiarnfd=$(printf 'A\314\210') DIRNAME=xx${Adiarnfd}yy mkdir $DIR && cd $DIR && git init && mkdir $DIRNAME && cd $DIRNAME && echo "Initial" >file && git add file && echo "One more line" >>file && echo y | git restore -p . Initialized empty Git repository in /tmp/git-test-restore-p/.git/ BUG: pathspec.c:495: error initializing pathspec_item Cannot close git diff-index --cached --numstat [snip] The command `git restore` is run from a directory inside a Git repo. Git needs to split the $CWD into 2 parts: The path to the repo and "the rest", if any. "The rest" becomes a "prefix" later used inside the pathspec code. As an example, "/path/to/repo/dir-inside-repå" would determine "/path/to/repo" as the root of the repo, the place where the configuration file .git/config is found. The rest becomes the prefix ("dir-inside-repå"), from where the pathspec machinery expands the ".", more about this later. If there is a decomposed form, (making the decomposing visible like this), "dir-inside-rep°a" doesn't match "dir-inside-repå". Git commands need to: (a) read the configuration variable "core.precomposeunicode" (b) precocompose argv[] (c) precompose the prefix, if there was any The first commit, 76759c7dff53 "git on Mac OS and precomposed unicode" addressed (a) and (b). The call to precompose_argv() was added into parse-options.c, because that seemed to be a good place when the patch was written. Commands that don't use parse-options need to do (a) and (b) themselfs. The commands `diff-files`, `diff-index`, `diff-tree` and `diff` learned (a) and (b) in commit 90a78b83e0b8 "diff: run arguments through precompose_argv" Branch names (or refs in general) using decomposed code points resulting in decomposed file names had been fixed in commit 8e712ef6fc97 "Honor core.precomposeUnicode in more places" The bug report from above shows 2 things: - more commands need to handle precomposed unicode - (c) should be implemented for all commands using pathspecs Solution: precompose_argv() now handles the prefix (if needed), and is renamed into precompose_argv_prefix(). Inside this function the config variable core.precomposeunicode is read into the global variable precomposed_unicode, as before. This reading is skipped if precomposed_unicode had been read before. The original patch for preocomposed unicode, 76759c7dff53, placed precompose_argv() into parse-options.c Now add it into git.c::run_builtin() as well. Existing precompose calls in diff-files.c and others may become redundant, and if we audit the callflows that reach these places to make sure that they can never be reached without going through the new call added to run_builtin(), we might be able to remove these existing ones. But in this commit, we do not bother to do so and leave these precompose callsites as they are. Because precompose() is idempotent and can be called on an already precomposed string safely, this is safer than removing existing calls without fully vetting the callflows. There is certainly room for cleanups - this change intends to be a bug fix. Cleanups needs more tests in e.g. t/t3910-mac-os-precompose.sh, and should be done in future commits. [1] git-bugreport-2021-01-06-1209.txt (git can't deal with special characters) [2] https://lore.kernel.org/git/A102844A-9501-4A86-854D-E3B387D378AA@icloud.com/ Reported-by: Daniel Troger <random_n0body@icloud.com> Helped-By: Philippe Blain <levraiphilippeblain@gmail.com> Signed-off-by: Torsten Bögershausen <tboegi@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-20builtin/diff-index: learn --merge-baseLibravatar Denton Liu1-0/+2
There is currently no easy way to take the diff between the working tree or index and the merge base between an arbitrary commit and HEAD. Even diff's `...` notation doesn't allow this because it only works between commits. However, the ability to do this would be desirable to a user who would like to see all the changes they've made on a branch plus uncommitted changes without taking into account changes made in the upstream branch. Teach diff-index and diff (with one commit) the --merge-base option which allows a user to use the merge base of a commit and HEAD as the "before" side. Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-20diff-lib: accept option flags in run_diff_index()Libravatar Denton Liu1-4/+4
In a future commit, we will teach run_diff_index() to accept more options via flag bits. For now, change `cached` into a flag in the `option` bitfield. The behaviour should remain exactly the same. Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-01-24cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switchLibravatar Nguyễn Thái Ngọc Duy1-0/+1
By default, index compat macros are off from now on, because they could hide the_index dependency. Only those in builtin can use it. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-21revision.c: remove implicit dependency on the_indexLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-07Merge branch 'ma/builtin-unleak'Libravatar Junio C Hamano1-0/+1
Many variables that points at a region of memory that will live throughout the life of the program have been marked with UNLEAK marker to help the leak checkers concentrate on real leaks.. * ma/builtin-unleak: builtin/: add UNLEAKs
2017-10-02builtin/: add UNLEAKsLibravatar Martin Ågren1-0/+1
Add some UNLEAKs where we are about to return from `cmd_*`. UNLEAK the variables in the same order as we've declared them. While addressing `msg` in builtin/tag.c, convert the existing `strbuf_release()` calls as well. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-03submodule: remove gitmodules_configLibravatar Brandon Williams1-1/+0
Now that the submodule-config subsystem can lazily read the gitmodules file we no longer need to explicitly pre-read the gitmodules by calling 'gitmodules_config()' so let's remove it. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-24Merge branch 'bw/config-h'Libravatar Junio C Hamano1-0/+1
Fix configuration codepath to pay proper attention to commondir that is used in multi-worktree situation, and isolate config API into its own header file. * bw/config-h: config: don't implicitly use gitdir or commondir config: respect commondir setup: teach discover_git_directory to respect the commondir config: don't include config.h by default config: remove git_config_iter config: create config.h
2017-06-19Merge branch 'jk/consistent-h'Libravatar Junio C Hamano1-0/+3
"git $cmd -h" for builtin commands calls the implementation of the command (i.e. cmd_$cmd() function) without doing any repository set-up, and the commands that expect RUN_SETUP is done by the Git potty needs to be prepared to show the help text without barfing. * jk/consistent-h: t0012: test "-h" with builtins git: add hidden --list-builtins option version: convert to parse-options diff- and log- family: handle "git cmd -h" early submodule--helper: show usage for "-h" remote-{ext,fd}: print usage message on invalid arguments upload-archive: handle "-h" option early credential: handle invalid arguments earlier
2017-06-15config: don't include config.h by defaultLibravatar Brandon Williams1-0/+1
Stop including config.h by default in cache.h. Instead only include config.h in those files which require use of the config system. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-05diff- and log- family: handle "git cmd -h" earlyLibravatar Junio C Hamano1-0/+3
"git $builtin -h" bypasses the usual repository setup and calls the cmd_$builtin() function, expecting it to show the help text. Unfortunately the commands in the log- and the diff- family want to call into the revisions machinery, which by definition needs to have a repository already discovered. Strictly speaking, they may not need a repository only for parsing "-h", but it is a good discipline to future-proof codepath to ensure that setup_revisions() is called after we know that a repository is there. Handle the "git $builtin -h" special case very early in these commands to work around potential issues. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-09diff: have the diff-* builtins configure diff before initializing revisionsLibravatar Marc Branchaud1-1/+1
This matches how the diff Porcelain works. It makes the plumbing commands respect diff's configuration options, such as indentHeuristic, because init_revisions() calls diff_setup() which fills in the diff_options struct. Signed-off-by: Marc Branchaud <marcnarc@xiplink.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-13diff: run arguments through precompose_argvLibravatar Alexander Rinass1-0/+1
When running diff commands, a pathspec containing decomposed unicode code points is not converted to precomposed unicode form under Mac OS X, but we normalize the paths in the index and the history to precomposed form on that platform. As a result, the pathspec would not match and no diff is shown. Unlike many builtin commands, the "diff" family of commands do not use parse_options(), which is how other builtin commands indirectly call precompose_argv() to normalize argv[] into precomposed form on Mac OSX. Teach these commands to call precompose_argv() themselves. Note that precomopose_argv() normalizes not just paths but all command line arguments, so things like "git diff -G $string" when $string has the decomposed form would first be normalized into the precomposed form and would stop hitting the same string in the decomposed form in the diff output with this change. It is not a problem per-se, as "log" family of commands already use parse_options() and call precompose_argv()--we can think of this change as making the "diff" family of commands behave in a similar way as the commands in the "log" family. Signed-off-by: Alexander Rinass <alex@fournova.com> Helped-by: Torsten Bögershausen <tboegi@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-14standardize usage info string formatLibravatar Alex Henrie1-1/+1
This patch puts the usage info strings that were not already in docopt- like format into docopt-like format, which will be a litle easier for end users and a lot easier for translators. Changes include: - Placing angle brackets around fill-in-the-blank parameters - Putting dashes in multiword parameter names - Adding spaces to [-f|--foobar] to make [-f | --foobar] - Replacing <foobar>* with [<foobar>...] Signed-off-by: Alex Henrie <alexhenrie24@gmail.com> Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15convert read_cache_preload() to take struct pathspecLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-02update-index/diff-index: use core.preloadindex to improve performanceLibravatar Karsten Blees1-2/+6
'update-index --refresh' and 'diff-index' (without --cached) don't honor the core.preloadindex setting yet. Porcelain commands using these (such as git [svn] rebase) suffer from this, especially on Windows. Use read_cache_preload to improve performance. Additionally, in builtin/diff.c, don't preload index status if we don't access the working copy (--cached). Results with msysgit on WebKit repo (2GB in 200k files): | update-index | diff-index | rebase ----------------+--------------+------------+--------- msysgit-v1.8.0 | 9.157s | 10.536s | 42.791s + preloadindex | 9.157s | 10.536s | 28.725s + this patch | 2.329s | 2.752s | 15.152s + fscache [1] | 0.731s | 1.171s | 8.877s [1] https://github.com/kblees/git/tree/kb/fscache-v3 Thanks-to: Albert Krawczyk <pro-logic@optusnet.com.au> Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Jeff King <peff@peff.net>
2010-08-09Submodules: Use "ignore" settings from .gitmodules too for diff and statusLibravatar Jens Lehmann1-0/+2
The .gitmodules file is parsed for "submodule.<name>.ignore" entries before looking for them in .git/config. Thus settings found in .git/config will override those from .gitmodules, thereby allowing the local developer to ignore settings given by the remote side while also letting upstream set defaults for those users who don't have special needs. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-22Move 'builtin-*' into a 'builtin/' subdirectoryLibravatar Linus Torvalds1-0/+50
This shrinks the top-level directory a bit, and makes it much more pleasant to use auto-completion on the thing. Instead of [torvalds@nehalem git]$ em buil<tab> Display all 180 possibilities? (y or n) [torvalds@nehalem git]$ em builtin-sh builtin-shortlog.c builtin-show-branch.c builtin-show-ref.c builtin-shortlog.o builtin-show-branch.o builtin-show-ref.o [torvalds@nehalem git]$ em builtin-shor<tab> builtin-shortlog.c builtin-shortlog.o [torvalds@nehalem git]$ em builtin-shortlog.c you get [torvalds@nehalem git]$ em buil<tab> [type] builtin/ builtin.h [torvalds@nehalem git]$ em builtin [auto-completes to] [torvalds@nehalem git]$ em builtin/sh<tab> [type] shortlog.c shortlog.o show-branch.c show-branch.o show-ref.c show-ref.o [torvalds@nehalem git]$ em builtin/sho [auto-completes to] [torvalds@nehalem git]$ em builtin/shor<tab> [type] shortlog.c shortlog.o [torvalds@nehalem git]$ em builtin/shortlog.c which doesn't seem all that different, but not having that annoying break in "Display all 180 possibilities?" is quite a relief. NOTE! If you do this in a clean tree (no object files etc), or using an editor that has auto-completion rules that ignores '*.o' files, you won't see that annoying 'Display all 180 possibilities?' message - it will just show the choices instead. I think bash has some cut-off around 100 choices or something. So the reason I see this is that I'm using an odd editory, and thus don't have the rules to cut down on auto-completion. But you can simulate that by using 'ls' instead, or something similar. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>