kernel/git - git - PowerEL Git System

Commit Graph

Author	SHA1	Message	Date
Junio C Hamano	44c48a909a	diff --follow: do call diffcore_std() as necessary 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>	15 years ago
Jens Lehmann	aee9c7d654	Submodules: Add the new "ignore" config option for diff and status The new "ignore" config option controls the default behavior for "git status" and the diff family. It specifies under what circumstances they consider submodules as modified and can be set separately for each submodule. The command line option "--ignore-submodules=" has been extended to accept the new parameter "none" for both status and diff. Users that chose submodules to get rid of long work tree scanning times might want to set the "dirty" option for those submodules. This brings back the pre 1.7.0 behavior, where submodule work trees were never scanned for modifications. By using "--ignore-submodules=none" on the command line the status and diff commands can be told to do a full scan. This option can be set to the following values (which have the same name and meaning as for the "--ignore-submodules" option of status and diff): "all": All changes to the submodule will be ignored. "dirty": Only differences of the commit recorded in the superproject and the submodules HEAD will be considered modifications, all changes to the work tree of the submodule will be ignored. When using this value, the submodule will not be scanned for work tree changes at all, leading to a performance benefit on large submodules. "untracked": Only untracked files in the submodules work tree are ignored, a changed HEAD and/or modified files in the submodule will mark it as modified. "none" (which is the default): Either untracked or modified files in a submodules work tree or a difference between the subdmodules HEAD and the commit recorded in the superproject will make it show up as changed. This value is added as a new parameter for the "--ignore-submodules" option of the diff family and "git status" so the user can override the settings in the configuration. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Matthieu Moy	dea007fb4c	diff: parse separate options like -S foo Change the option parsing logic in revision.c to accept separate forms like `-S foo' in addition to `-Sfoo'. The rest of git already accepted this form, but revision.c still used its own option parsing. Short options affected are -S<string>, -l<num> and -O<orderfile>, for which an empty string wouldn't make sense, hence -<option> <arg> isn't ambiguous. This patch does not handle --stat-name-width and --stat-width, which are special-cases where diff_long_opt do not apply. They are handled in a separate patch to ease review. Original patch by Matthieu Moy, plus refactoring by Jonathan Nieder. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Jens Lehmann	dd44d419d3	Add optional parameters to the diff option "--ignore-submodules" In some use cases it is not desirable that the diff family considers submodules that only contain untracked content as dirty. This may happen e.g. when the submodule is not under the developers control and not all build generated files have been added to .gitignore by the upstream developers. Using the "untracked" parameter for the "--ignore-submodules" option disables checking for untracked content and lets git diff report them as changed only when they have new commits or modified content. Sometimes it is not wanted to have submodules show up as changed when they just contain changes to their work tree. An example for that are scripts which just want to check for submodule commits while ignoring any changes to the work tree. Also users having large submodules known not to change might want to use this option, as the - sometimes substantial - time it takes to scan the submodule work tree(s) is saved. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Axel Bonnet	a788d7d58b	textconv: make the API public The textconv functionality allows one to convert a file into text before running diff. But this functionality can be useful to other features such as blame. Signed-off-by: Axel Bonnet <axel.bonnet@ensimag.imag.fr> Signed-off-by: Clément Poulain <clement.poulain@ensimag.imag.fr> Signed-off-by: Diane Gasselin <diane.gasselin@ensimag.imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Bo Yang	a3c158d4a5	Add a prefix output callback to diff output The callback can be used to add some prefix string to each line of diff output. Signed-off-by: Bo Yang <struggleyb.nku@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Gary V. Vaughan	4b05548fc0	enums: omit trailing comma for portability Without this patch at least IBM VisualAge C 5.0 (I have 5.0.2) on AIX 5.1 fails to compile git. enum style is inconsistent already, with some enums declared on one line, some over 3 lines with the enum values all on the middle line, sometimes with 1 enum value per line... and independently of that the trailing comma is sometimes present and other times absent, often mixing with/without trailing comma styles in a single file, and sometimes in consecutive enum declarations. Clearly, omitting the comma is the more portable style, and this patch changes all enum declarations to use the portable omitted dangling comma style consistently. Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Thomas Rast	882749a04f	diff: add --word-diff option that generalizes --color-words This teaches the --color-words engine a more general interface that supports two new modes: * --word-diff=plain, inspired by the 'wdiff' utility (most similar to 'wdiff -n <old> <new>'): uses delimiters [-removed-] and {+added+} * --word-diff=porcelain, which generates an ad-hoc machine readable format: - each diff unit is prefixed by [-+ ] and terminated by newline as in unified diff - newlines in the input are output as a line consisting only of a tilde '~' Both of these formats still support color if it is enabled, using it to highlight the differences. --color-words becomes a synonym for --word-diff=color, which is the color-only format. Also adds some compatibility/convenience options. Thanks to Junio C Hamano and Miles Bader for good ideas. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Jens Lehmann	3bfc450476	git status: ignoring untracked files must apply to submodules too Since 1.7.0 submodules are considered dirty when they contain untracked files. But when git status is called with the "-uno" option, the user asked to ignore untracked files, so they must be ignored in submodules too. To achieve this, the new flag DIFF_OPT_IGNORE_UNTRACKED_IN_SUBMODULES is introduced. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Jens Lehmann	9297f77e6d	git status: Show detailed dirty status of submodules in long format Since 1.7.0 there are three reasons a submodule is considered modified against the work tree: It contains new commits, modified content or untracked content. Lets show all reasons in the long format of git status, so the user can better asses the nature of the modification. This change does not affect the short and porcelain formats. Two new members are added to "struct wt_status_change_data" to store the information gathered by run_diff_files(). wt-status.c uses the new flag DIFF_OPT_DIRTY_SUBMODULES to tell diff-lib.c it wants to get detailed dirty information about submodules. A hint line for submodules is printed in the dirty header when dirty submodules are present. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Jens Lehmann	e3d42c4773	Performance optimization for detection of modified submodules In the worst case is_submodule_modified() got called three times for each submodule. The information we got from scanning the whole submodule tree the first time can be reused instead. New parameters have been added to diff_change() and diff_addremove(), the information is stored in a new member of struct diff_filespec. Its value is then reused instead of calling is_submodule_modified() again. When no explicit "-dirty" is needed in the output the call to is_submodule_modified() is not necessary when the submodules HEAD already disagrees with the ref of the superproject, as this alone marks it as modified. To achieve that, get_stat_data() got an extra argument. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Junio C Hamano	730f72840c	unpack-trees.c: look ahead in the index This makes the traversal of index be in sync with the tree traversal. When unpack_callback() is fed a set of tree entries from trees, it inspects the name of the entry and checks if the an index entry with the same name could be hiding behind the current index entry, and (1) if the name appears in the index as a leaf node, it is also fed to the n_way_merge() callback function; (2) if the name is a directory in the index, i.e. there are entries in that are underneath it, then nothing is fed to the n_way_merge() callback function; (3) otherwise, if the name comes before the first eligible entry in the index, the index entry is first unpacked alone. When traverse_trees_recursive() descends into a subdirectory, the cache_bottom pointer is moved to walk index entries within that directory. All of these are omitted for diff-index, which does not even want to be fed an index entry and a tree entry with D/F conflicts. This fixes 3-way read-tree and exposes a bug in other parts of the system in t6035, test #5. The test prepares these three trees: O = HEAD^ 100644 blob `e69de29bb2` a/b-2/c/d 100644 blob `e69de29bb2` a/b/c/d 100644 blob `e69de29bb2` a/x A = HEAD 100644 blob `e69de29bb2` a/b-2/c/d 100644 blob `e69de29bb2` a/b/c/d 100644 blob 587be6b4c3f93f93c489c0111bba5596147a26cb a/x B = master 120000 blob a36b77384451ea1de7bd340ffca868249626bc52 a/b 100644 blob `e69de29bb2` a/b-2/c/d 100644 blob `e69de29bb2` a/x With a clean index that matches HEAD, running git read-tree -m -u --aggressive $O $A $B now yields 120000 a36b77384451ea1de7bd340ffca868249626bc52 3 a/b 100644 `e69de29bb2` 0 a/b-2/c/d 100644 `e69de29bb2` 1 a/b/c/d 100644 `e69de29bb2` 2 a/b/c/d 100644 587be6b4c3f93f93c489c0111bba5596147a26cb 0 a/x which is correct. "master" created "a/b" symlink that did not exist, and removed "a/b/c/d" while HEAD did not do touch either path. Before this series, read-tree did not notice the situation and resolved addition of "a/b" and removal of "a/b/c/d" independently. If A = HEAD had another path "a/b/c/e" added, this merge should conflict but instead it silently resolved "a/b" and then immediately overwrote it to add "a/b/c/e", which was quite bogus. Tests in t1012 start to work with this. Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Bert Wesarg	89cb73a19a	Give the hunk comment its own color Inspired by the coloring of quilt. Introduce a separate color and paint the hunk comment part, i.e. the name of the function, in a separate color "diff.func" (defaults to plain). Whitespace between hunk header and hunk comment is printed in plain color. Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Johannes Schindelin	752c0c2492	Add the --submodule option to the diff option family When you use the option --submodule=log you can see the submodule summaries inlined in the diff, instead of not-quite-helpful SHA-1 pairs. The format imitates what "git submodule summary" shows. To do that, <path>/.git/objects/ is added to the alternate object databases (if that directory exists). This option was requested by Jens Lehmann at the GitTogether in Berlin. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
Junio C Hamano	90b1994170	diff: Rename QUIET internal option to QUICK The option "QUIET" primarily meant "find if we have _any_ difference as quick as possible and report", which means we often do not even have to look at blobs if we know the trees are different by looking at the higher level (e.g. "diff-tree A B"). As a side effect, because there is no point showing one change that we happened to have found first, it also enables NO_OUTPUT and EXIT_WITH_STATUS options, making the end result look quiet. Rename the internal option to QUICK to reflect this better; it also makes grepping the source tree much easier, as there are other kinds of QUIET option everywhere. Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Junio C Hamano	f245194f9a	diff: change semantics of "ignore whitespace" options Traditionally, the --ignore-whitespace* options have merely meant to tell the diff output routine that some class of differences are not worth showing in the textual diff output, so that the end user has easier time to review the remaining (presumably more meaningful) changes. These options never affected the outcome of the command, given as the exit status when the --exit-code option was in effect (either directly or indirectly). When you have only whitespace changes, however, you might expect git diff -b --exit-code to report that there is _no_ change with zero exit status. Change the semantics of --ignore-whitespace* options to mean more than "omit showing the difference in text". The exit status, when --exit-code is in effect, is computed by checking if we found any differences at the path level, while diff frontends feed filepairs to the diffcore engine. When "ignore whitespace" options are in effect, we defer this determination until the very end of diffcore transformation. We simply do not know until the textual diff is generated, which comes very late in the pipeline. When --quiet is in effect, various diff frontends optimize by breaking out early from the loop that enumerates the filepairs, when we find the first path level difference; when --ignore-whitespace* is used the above change automatically disables this optimization. Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Keith Cascio	628d5c2b70	Use DIFF_XDL_SET/DIFF_OPT_SET instead of raw bit-masking Signed-off-by: Keith Cascio <keith@cs.ucla.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Stephan Beyer	75f3ff2eea	Generalize and libify index_is_dirty() to index_differs_from(...) index_is_dirty() in builtin-revert.c checks if the index is dirty. This patch generalizes this function to check if the index differs from a revision, i.e. the former index_is_dirty() behavior can now be achieved by index_differs_from("HEAD", 0). The second argument "diff_flags" allows to set further diff option flags like DIFF_OPT_IGNORE_SUBMODULES. See DIFF_OPT_* macros in diff.h for a list. index_differs_from() seems to be useful for more than builtin-revert.c, so it is moved into diff-lib.c and also used in builtin-commit.c. Yet to mention: - "rev.abbrev = 0;" can be safely removed. This has no impact on performance or functioning of neither setup_revisions() nor run_diff_index(). - rev.pending.objects is free()d because this fixes a leak. (Also see `295dd2ad` "Fix memory leak in traverse_commit_list") Mentored-by: Daniel Barkalow <barkalow@iabervon.org> Mentored-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Johannes Schindelin	2b6a5417d7	color-words: take an optional regular expression describing words In some applications, words are not delimited by white space. To allow for that, you can specify a regular expression describing what makes a word with git diff --color-words='[A-Za-z0-9]+' Note that words cannot contain newline characters. As suggested by Thomas Rast, the words are the exact matches of the regular expression. Note that a regular expression beginning with a '^' will match only a word at the beginning of the hunk, not a word at the beginning of a line, and is probably not what you want. This commit contains a quoting fix by Thomas Rast. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
René Scharfe	6d0e674a57	diff: add option to show context between close hunks Merge two hunks if there is only the specified number of otherwise unshown context between them. For --inter-hunk-context=1, the resulting patch has the same number of lines but shows uninterrupted context instead of a context header line in between. Patches generated with this option are easier to read but are also more likely to conflict if the file to be patched contains other changes. This patch keeps the default for this option at 0. It is intended to just make the feature available in order to see its advantages and downsides. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Jeff King	c7534ef4a1	userdiff: require explicitly allowing textconv Diffs that have been produced with textconv almost certainly cannot be applied, so we want to be careful not to generate them in things like format-patch. This introduces a new diff options, ALLOW_TEXTCONV, which controls this behavior. It is off by default, but is explicitly turned on for the "log" family of commands, as well as the "diff" porcelain (but not diff-* plumbing). Because both text conversion and external diffing are controlled by these diff options, we can get rid of the "plumbing versus porcelain" distinction when reading the config. This was an attempt to control the same thing, but suffered from being too coarse-grained. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Heikki Orsila	fd33777b78	diff --dirstat-by-file: count changed files, not lines This new option --dirstat-by-file is the same as --dirstat, but it counts "impacted files" instead of "impacted lines" (lines that are added or removed). Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	f88d225feb	diff --cumulative is a sub-option of --dirstat The option used to be implemented as if it is a totally independent one, but "git diff --cumulative" would not mean anything without "--dirstat". This makes --cumulative imply --dirstat. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	a5a818ee48	diff: vary default prefix depending on what are compared With a new configuration "diff.mnemonicprefix", "git diff" shows the differences between various combinations of preimage and postimage trees with prefixes different from the standard "a/" and "b/". Hopefully this will make the distinction stand out for some people. "git diff" compares the (i)ndex and the (w)ork tree; "git diff HEAD" compares a (c)ommit and the (w)ork tree; "git diff --cached" compares a (c)ommit and the (i)ndex; "git-diff HEAD:file1 file2" compares an (o)bject and a (w)ork tree entity; "git diff --no-index a b" compares two non-git things (1) and (2). Because these mnemonics now have meanings, they are swapped when reverse diff is in effect and this feature is enabled. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Dmitry Potapov	fd55a19eb1	Fix buffer overflow in git diff If PATH_MAX on your system is smaller than a path stored, it may cause buffer overflow and stack corruption in diff_addremove() and diff_change() functions when running git-diff Signed-off-by: Dmitry Potapov <dpotapov@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	0569e9b8ce	"git diff": do not ignore index without --no-index Even if "foo" and/or "bar" does not exist in index, "git diff foo bar" should not change behaviour drastically from "git diff foo bar baz" or "git diff foo". A feature that "sometimes works and is handy" is an unreliable cute hack. "git diff foo bar" outside a git repository continues to work as a more colourful alternative to "diff -u" as before. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Johannes Schindelin	50fd9bd843	diff options: Introduce --ignore-submodules The new option --ignore-submodules can now be used to ignore changes in submodules. Why? Sometimes it is not interesting when a submodule changed. For example, when reordering some commits in the superproject, a dirty submodule is usually totally uninteresting. So we will use this option in git-rebase to test for a dirty working tree. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Johannes Schindelin	ef90d6d420	Provide git_config with a callback-data parameter git_config() only had a function parameter, but no callback data parameter. This assumes that all callback functions only modify global variables. With this patch, every callback gets a void * parameter, and it is hoped that this will help the libification effort. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Jeff King	b8960bbe7b	diff: make "too many files" rename warning optional In many cases, the warning ends up as clutter, because the diff is being done "behind the scenes" from the user (e.g., when generating a commit diffstat), and whether we show renames or not is not particularly interesting to the user. However, in the case of a merge (which is what motivated the warning in the first place), it is a useful hint as to why a merge with renames might have failed. This patch makes the warning optional based on the code calling into diffcore. We default to not showing the warning, but turn it on for merges. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Adam Simpkins	028656552b	Remove dead code: show_log() sep argument and diff_options.msg_sep These variables were made unnecessary by commit `3969cf7db1`. Signed-off-by: Adam Simpkins <adam@adamsimpkins.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Daniel Barkalow	c0c77734bf	Write diff output to a file in struct diff_options Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Matthias Kestenholz	6b2f2d9805	Add color.ui variable which globally enables colorization if set Signed-off-by: Matthias Kestenholz <mk@spinlock.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	cd676a5136	diff --relative: output paths as relative to the current subdirectory This adds --relative option to the diff family. When you start from a subdirectory: $ git diff --relative shows only the diff that is inside your current subdirectory, and without $prefix part. People who usually live in subdirectories may like it. There are a few things I should also mention about the change: - This works not just with diff but also works with the log family of commands, but the history pruning is not affected. In other words, if you go to a subdirectory, you can say: $ git log --relative -p but it will show the log message even for commits that do not touch the current directory. You can limit it by giving pathspec yourself: $ git log --relative -p . This originally was not a conscious design choice, but we have a way to affect diff pathspec and pruning pathspec independently. IOW "git log --full-diff -p ." tells it to prune history to commits that affect the current subdirectory but show the changes with full context. I think it makes more sense to leave pruning independent from --relative than the obvious alternative of always pruning with the current subdirectory, which would break the symmetry. - Because this works also with the log family, you could format-patch a single change, limiting the effect to your subdirectory, like so: $ cd gitk-git $ git format-patch -1 --relative 911f1eb But because that is a special purpose usage, this option will never become the default, with or without repository or user preference configuration. The risk of producing a partial patch and sending it out by mistake is too great if we did so. - This is inherently incompatible with --no-index, which is a bolted-on hack that does not have much to do with git itself. I didn't bother checking and erroring out on the combined use of the options, but probably I should. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Linus Torvalds	7df7c019c2	Add "--dirstat" for some directory statistics This adds a new form of overview diffstat output, doing something that I have occasionally ended up doing manually (and badly, because it's actually pretty nasty to do), and that I think is very useful for an project like the kernel that has a fairly deep and well-separated directory structure with semantic meaning. What I mean by that is that it's often interesting to see exactly which sub-directories are impacted by a patch, and to what degree - even if you don't perhaps care so much about the individual files themselves. What makes the concept more interesting is that the "impact" is often hierarchical: in the kernel, for example, something could either have a very localized impact to "fs/ext3/" and then it's interesting to see that such a patch changes mostly that subdirectory, but you could have another patch that changes some generic VFS-layer issue which affects _many_ subdirectories that are all under "fs/", but none - or perhaps just a couple of them - of the individual filesystems are interesting in themselves. So what commonly happens is that you may have big changes in a specific sub-subdirectory, but still also significant separate changes to the subdirectory leading up to that - maybe you have significant VFS-level changes, but also changes under that VFS layer in the NFS-specific directories, for example. In that case, you do want the low-level parts that are significant to show up, but then the insignificant ones should show up as under the more generic top-level directory. This patch shows all of that with "--dirstat". The output can be either something simple like commit 81772fe... Author: Thomas Gleixner <tglx@linutronix.de> Date: Sun Feb 10 23:57:36 2008 +0100 x86: remove over noisy debug printk pageattr-test.c contains a noisy debug printk that people reported. The condition under which it prints (randomly tapping into a mem_map[] hole and not being able to c_p_a() there) is valid behavior and not interesting to report. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 100.0% arch/x86/mm/ or something much more complex like commit e231c2e... Author: David Howells <dhowells@redhat.com> Date: Thu Feb 7 00:15:26 2008 -0800 Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 20.5% crypto/ 7.6% fs/afs/ 7.6% fs/fuse/ 7.6% fs/gfs2/ 5.1% fs/jffs2/ 5.1% fs/nfs/ 5.1% fs/nfsd/ 7.6% fs/reiserfs/ 15.3% fs/ 7.6% net/rxrpc/ 10.2% security/keys/ where that latter example is an example of significant work in some individual fs// subdirectories (like the patches to reiserfs accounting for 7.6% of the whole), but then discounting those individual filesystems, there's also 15.3% other "random" things that weren't worth reporting on their oen left over under fs/ in general (either in that directory itself, or in subdirectories of fs/ that didn't have enough changes to be reported individually). I'd like to stress that the "15.3% fs/" mentioned above is the stuff that is under fs/ but that was _not_ significant enough to report on its own. So the above does _not_ mean that 15.3% of the work was under fs/ per se, because that 15.3% does not* include the already-reported 7.6% of afs, 7.6% of fuse etc. If you want to enable "cumulative" directory statistics, you can use the "--cumulative" flag, which adds up percentages recursively even when they have been already reported for a sub-directory. That cumulative output is disabled if all of the changes in one subdirectory come from a deeper subdirectory, to avoid repeating subdirectories all the way to the root. For an example of the cumulative reporting, the above commit becomes commit e231c2e... Author: David Howells <dhowells@redhat.com> Date: Thu Feb 7 00:15:26 2008 -0800 Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 20.5% crypto/ 7.6% fs/afs/ 7.6% fs/fuse/ 7.6% fs/gfs2/ 5.1% fs/jffs2/ 5.1% fs/nfs/ 5.1% fs/nfsd/ 7.6% fs/reiserfs/ 61.5% fs/ 7.6% net/rxrpc/ 10.2% security/keys/ in which the commit percentages now obviously add up to much more than 100%: now the changes that were already reported for the sub-directories under fs/ are then cumulatively included in the whole percentage of fs/ (ie now shows 61.5% as opposed to the 15.3% without the cumulative reporting). The default reporting limit has been arbitrarily set at 3%, which seems to be a pretty good cut-off, but you can specify the cut-off manually by giving it as an option parameter (eg "--dirstat=5" makes the cut-off be at 5% instead) NOTE! The percentages are purely about the total lines added and removed, not anything smarter (or dumber) than that. Also note that you should not generally expect things to add up to 100%: not only does it round down, we don't report leftover scraps (they add up to the top-level change count, but we don't even bother reporting that, it only reports subdirectories). Quite frankly, as a top-level manager this is really convenient for me, but it's going to be very boring for git itself since there are few subdirectories. Also, don't expect things to make tons of sense if you combine this with "-M" and there are cross-directory renames etc. But even for git itself, you can get some fun statistics. Try out git log --dirstat and see the occasional mentions of things like Documentation/, git-gui/, gitweb/ and gitk-git/. Or try out something like git diff --dirstat v1.5.0..v1.5.4 which does kind of git an overview that shows something. But in general, the output is more exciting for big projects with deeper structure, and doing a git diff --dirstat v2.6.24..v2.6.25-rc1 on the kernel is what I actually wrote this for! Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Jeff King	9a1805a872	add a "basic" diff config callback The diff porcelain uses git_diff_ui_config to set porcelain-ish config options, like automatically turning on color. The plumbing specifically avoids calling this function, since it doesn't want things like automatic color or rename detection. However, some diff options should be set for both plumbing and porcelain. For example, one can still turn on color in git-diff-files using the --color command line option. This means we want the color config from color.diff.* (so that once color is on, we use the user's preferred scheme), but _not_ the color.diff variable. We split the diff config into "ui" and "basic", where "basic" is suitable for use by plumbing (so _most_ things affecting the output should still go into the "ui" part). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Johannes Schindelin	eab9a40b6d	Teach diff machinery to display other prefixes than "a/" and "b/" With the new options "--src-prefix=<prefix>", "--dst-prefix=<prefix>" and "--no-prefix", you can now control the path prefixes of the diff machinery. These used to by hardwired to "a/" for the source prefix and "b/" for the destination prefix. Initial patch by Pascal Obry. Sane option names suggested by Linus. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	da31b358fb	diff --check: minor fixups There is no reason --exit-code and --check-diff must be mutually exclusive, so assign different bits to different results and allow them to be returned from the command. Introduce diff_result_code() to factor out the common code to decide final status code based on diffopt settings and use it everywhere. Update tests to match the above fix. Turning pager off when "diff --check" is used is a regression. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Wincent Colaiuta	62c64895cf	"diff --check" should affect exit status "git diff" has a --check option that can be used to check for whitespace problems but it only reported by printing warnings to the console. Now when the --check option is used we give a non-zero exit status, making "git diff --check" nicer to use in scripts and hooks. Signed-off-by: Wincent Colaiuta <win@wincent.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Pierre Habouzit	8f67f8aefb	Make the diff_options bitfields be an unsigned with explicit masks. reverse_diff was a bit-value in disguise, it's merged in the flags now. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	fb63d7f889	git-add: make the entry stat-clean after re-adding the same contents Earlier in commit `0781b8a9b2` (add_file_to_index: skip rehashing if the cached stat already matches), add_file_to_index() were taught not to re-add the path if it already matches the index. The change meant well, but was not executed quite right. It used ie_modified() to see if the file on the work tree is really different from the index, and skipped adding the contents if the function says "not modified". This was wrong. There are three possible comparison results between the index and the file in the work tree: - with lstat(2) we _know_ they are different. E.g. if the length or the owner in the cached stat information is different from the length we just obtained from lstat(2), we can tell the file is modified without looking at the actual contents. - with lstat(2) we _know_ they are the same. The same length, the same owner, the same everything (but this has a twist, as described below). - we cannot tell from lstat(2) information alone and need to go to the filesystem to actually compare. The last case arises from what we call 'racy git' situation, that can be caused with this sequence: $ echo hello >file $ git add file $ echo aeiou >file ;# the same length If the second "echo" is done within the same filesystem timestamp granularity as the first "echo", then the timestamp recorded by "git add" and the timestamp we get from lstat(2) will be the same, and we can mistakenly say the file is not modified. The path is called 'racily clean'. We need to reliably detect racily clean paths are in fact modified. To solve this problem, when we write out the index, we mark the index entry that has the same timestamp as the index file itself (that is the time from the point of view of the filesystem) to tell any later code that does the lstat(2) comparison not to trust the cached stat info, and ie_modified() then actually goes to the filesystem to compare the contents for such a path. That's all good, but it should not be used for this "git add" optimization, as the goal of "git add" is to actually update the path in the index and make it stat-clean. With the false optimization, we did _not_ cause any data loss (after all, what we failed to do was only to update the cached stat information), but it made the following sequence leave the file stat dirty: $ echo hello >file $ git add file $ echo hello >file ;# the same contents $ git add file The solution is not to use ie_modified() which goes to the filesystem to see if it is really clean, but instead use ie_match_stat() with "assume racily clean paths are dirty" option, to force re-adding of such a path. There was another problem with "git add -u". The codepath shares the same issue when adding the paths that are found to be modified, but in addition, it asked "git diff-files" machinery run_diff_files() function (which is "git diff-files") to list the paths that are modified. But "git diff-files" machinery uses the same ie_modified() call so that it does not report racily clean _and_ actually clean paths as modified, which is not what we want. The patch allows the callers of run_diff_files() to pass the same "assume racily clean paths are dirty" option, and makes "git-add -u" codepath to use that option, to discover and re-add racily clean _and_ actually clean paths. We could further optimize on top of this patch to differentiate the case where the path really needs re-adding (i.e. the content of the racily clean entry was indeed different) and the case where only the cached stat information needs to be refreshed (i.e. the racily clean entry was actually clean), but I do not think it is worth it. This patch applies to maint and all the way up. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	4bd5b7dacc	ce_match_stat, run_diff_files: use symbolic constants for readability ce_match_stat() can be told: (1) to ignore CE_VALID bit (used under "assume unchanged" mode) and perform the stat comparison anyway; (2) not to perform the contents comparison for racily clean entries and report mismatch of cached stat information; using its "option" parameter. Give them symbolic constants. Similarly, run_diff_files() can be told not to report anything on removed paths. Also give it a symbolic constant for that. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
René Scharfe	6d2d9e8666	diff: squelch empty diffs even more When we compare two non-tracked files, or explicitly specify --no-index, the suggestion to run git-status is not helpful. The patch adds a new diff_options bitfield member, no_index, that is used instead of the special value of -2 of the rev_info field max_count to indicate that the index is not to be used. This makes it possible to pass that flag down to diffcore_skip_stat_unmatch(), which only has one diff_options parameter. This could even become a cleanup if we removed all assignments of max_count to a value of -2 (viz. replacement of a magic value with a self-documenting field name) but I didn't dare to do that so late in the rc game.. The no_index bit, if set, then tells diffcore_skip_stat_unmatch() to not account for any skipped stat-mismatches, which avoids the suggestion to run git-status. Signed-off-by: Rene Scharfe <rene.scharfe@lsfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Junio C Hamano	fb13227e08	git-diff: squelch "empty" diffs After starting to edit a working tree file but later when your edit ends up identical to the original (this can also happen when you ran a wholesale regexp replace with something like "perl -i" that does not actually modify many of the paths), "git diff" between the index and the working tree outputs many "empty" diffs that show "diff --git" headers and nothing else, because these paths are stat-dirty. While it was a way to warn the user that the earlier action of the user made the index ineffective as an optimization mechanism, it was felt too loud for the purpose of warning even to experienced users, and also resulted in confusing people new to git. This replaces the "empty" diffs with a single warning message at the end. Having many such paths hurts performance, and you can run "git-update-index --refresh" to update the lstat(2) information recorded in the index in such a case. "git-status" does so as a side effect, and that is more familiar to the end-user, so we recommend it to them. The change affects only "git diff" that outputs patch text, because that is where the annoyance of too many "empty" diff is most strongly felt, and because the warning message can be safely ignored by downstream tools without getting mistaken as part of the patch. For the low-level "git diff-files" and "git diff-index", the traditional behaviour is retained. Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Linus Torvalds	750f7b668f	Finally implement "git log --follow" Ok, I've really held off doing this too damn long, because I'm lazy, and I was always hoping that somebody else would do it. But no, people keep asking for it, but nobody actually did anything, so I decided I might as well bite the bullet, and instead of telling people they could add a "--follow" flag to "git log" to do what they want to do, I decided that it looks like I just have to do it for them.. The code wasn't actually that complicated, in that the diffstat for this patch literally says "70 insertions(+), 1 deletions(-)", but I will have to admit that in order to get to this fairly simple patch, you did have to know and understand the internal git diff generation machinery pretty well, and had to really be able to follow how commit generation interacts with generating patches and generating the log. So I suspect that while I was right that it wasn't that hard, I might have been expecting too much of random people - this patch does seem to be firmly in the core "Linus or Junio" territory. To make a long story short: I'm sorry for it taking so long until I just did it. I'm not going to guarantee that this works for everybody, but you really can just look at the patch, and after the appropriate appreciative noises ("Ooh, aah") over how clever I am, you can then just notice that the code itself isn't really that complicated. All the real new code is in the new "try_to_follow_renames()" function. It really isn't rocket science: we notice that the pathname we were looking at went away, so we start a full tree diff and try to see if we can instead make that pathname be a rename or a copy from some other previous pathname. And if we can, we just continue, except we show that particular diff, and ever after we use the _previous_ pathname. One thing to look out for: the "rename detection" is considered to be a singular event in the _linear_ "git log" output! That's what people want to do, but I just wanted to point out that this patch is not carrying around a "commit,pathname" kind of pair and it's not going to be able to notice the file coming from multiple different files in earlier history. IOW, if you use "git log --follow", then you get the stupid CVS/SVN kind of "files have single identities" kind of semantics, and git log will just pick the identity based on the normal move/copy heuristics _as_if_ the history could be linearized. Put another way: I think the model is broken, but given the broken model, I think this patch does just about as well as you can do. If you have merges with the same "file" having different filenames over the two branches, git will just end up picking _one_ of the pathnames at the point where the newer one goes away. It never looks at multiple pathnames in parallel. And if you understood all that, you probably didn't need it explained, and if you didn't understand the above blathering, it doesn't really mtter to you. What matters to you is that you can now do git log -p --follow builtin-rev-list.c and it will find the point where the old "rev-list.c" got renamed to "builtin-rev-list.c" and show it as such. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Junio C Hamano	16befb8b7f	Even more missing static Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Junio C Hamano	f1af60bdba	Support 'diff=pgm' attribute This enhances the attributes mechanism so that external programs meant for existing GIT_EXTERNAL_DIFF interface can be specifed per path. To configure such a custom diff driver, first define a custom diff driver in the configuration: [diff "my-c-diff"] command = <<your command string comes here>> Then mark the paths that you want to use this custom driver using the attribute mechanism. *.c diff=my-c-diff The intent of this separation is that the attribute mechanism is used for specifying the type of the contents, while the configuration mechanism is used to define what needs to be done to that type of the contents, which would be specific to both platform and personal taste. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	68aacb2f3c	diff --quiet This adds the command line option 'quiet' to tell 'git diff-*' that we are not interested in the actual diff contents but only want to know if there is any change. This option automatically turns --exit-code on, and turns off output formatting, as it does not make much sense to show the first hit we happened to have found. The --quiet option is silently turned off (but --exit-code is still in effect, so is silent output) if postprocessing filters such as pickaxe and diff-filter are used. For all practical purposes I do not think of a reason to want to use these filters and not viewing the diff output. The backends have not been taught about the option with this patch. That is a topic for later rounds. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	3161b4b521	Remove unused diffcore_std_no_resolve This was only used by diff-tree-helper program, whose purpose was to translate a raw diff to a patch. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Alex Riesen	41bbf9d585	Allow git-diff exit with codes similar to diff(1) This introduces a new command-line option: --exit-code. The diff programs will return 1 for differences, return 0 for equality, and something else for errors. Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Johannes Schindelin	fcfa33ec90	diff: make more cases implicit --no-index When specifying an absolute path, or a relative path pointing outside the working tree, do not fail, but roll your own diffopt parsing, and execute a --no-index diff. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago

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