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2009-05-03Merge branch 'jc/maint-1.6.0-diff-borrow-carefully' into maint-1.6.1Libravatar Junio C Hamano1-1/+9
* jc/maint-1.6.0-diff-borrow-carefully: diff --cached: do not borrow from a work tree when a path is marked as assume-unchanged
2009-03-22diff --cached: do not borrow from a work tree when a path is marked as ↵Libravatar Junio C Hamano1-1/+9
assume-unchanged When the index says that the file in the work tree that corresponds to the blob object that is used for comparison is known to be unchanged, "diff" reads from the file and applies convert_to_git(), instead of inflating the object, to feed the internal diff engine with, because an earlier benchnark found that it tends to be faster to use this optimization. However, the index can lie when the path is marked as assume-unchanged. Disable the optimization for such paths. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-27Merge branch 'jc/maint-1.6.0-split-diff-metainfo' into ↵Libravatar Junio C Hamano1-66/+80
jc/maint-split-diff-metainfo This is an evil merge, as a test added since 1.6.0 expects an incorrect behaviour the merged commit fixes. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-27diff.c: output correct index lines for a split diffLibravatar Junio C Hamano1-66/+80
A patch that changes the filetype (e.g. regular file to symlink) of a path must be split into a deletion event followed by a creation event, which means that we need to have two independent metainfo lines for each. However, the code reused the single set of metainfo lines. As the blob object names recorded on the index lines are usually not used nor validated on the receiving end, this is not an issue with normal use of the resulting patch. However, when accepting a binary patch to delete a blob, git-apply verified that the postimage blob object name on the index line is 0{40}, hence a patch that deletes a regular file blob that records binary contents to create a blob with different filetype (e.g. a symbolic link) failed to apply. "git am -3" also uses the blob object names recorded on the index line, so it would also misbehave when synthesizing a preimage tree. This moves the code to generate metainfo lines around, so that two independent sets of metainfo lines are used for the split halves. Additional tests by Jeff King. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-21Rename diff.suppress-blank-empty to diff.suppressBlankEmptyLibravatar Johannes Schindelin1-1/+3
All the other config variables use CamelCase. This config variable should not be an exception. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-18Fix type-mismatch compiler warning from diff_populate_filespec()Libravatar René Scharfe1-1/+2
The type of the size member of filespec is ulong, while strbuf_detach expects a size_t pointer. This patch should fix the warning: Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-17Make 'prepare_temp_file()' ignore st_size for symlinksLibravatar Linus Torvalds1-5/+4
The code was already set up to not really need it, so this just massages it a bit to remove the use entirely. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-17Make 'diff_populate_filespec()' use the new 'strbuf_readlink()'Libravatar Linus Torvalds1-9/+7
This makes all tests pass on a system where 'lstat()' has been hacked to return bogus data in st_size for symlinks. Of course, the test coverage isn't complete, but it's a good baseline. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-09diff: respect textconv in rewrite diffsLibravatar Jeff King1-12/+36
Currently we just skip rewrite diffs for binary files; this patch makes an exception for files which will be textconv'd, and actually performs the textconv before generating the diff. Conceptually, rewrite diffs should be in the exact same format as the a non-rewrite diff, except that we refuse to share any context. Thus it makes very little sense for "git diff" to show a textconv'd diff, but for "git diff -B" to show "Binary files differ". Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-09diff: fix handling of binary rewrite diffsLibravatar Jeff King1-1/+3
The current emit_rewrite_diff code always writes a text patch without checking whether the content is binary. This means that if you end up with a rewrite diff for a binary file, you get lots of raw binary goo in your patch. Instead, if we have binary files, then let's just skip emit_rewrite_diff altogether. We will already have shown the "dissimilarity index" line, so it is really about the diff contents. If binary diffs are turned off, the "Binary files a/file and b/file differ" message should be the same in either case. If we do have binary patches turned on, there isn't much point in making a less-efficient binary patch that does a total rewrite; no human is going to read it, and since binary patches don't apply with any fuzz anyway, the result of application should be the same. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-07diff: allow turning on textconv explicitly for plumbingLibravatar Jeff King1-0/+4
Some history viewers use the diff plumbing to generate diffs rather than going through the "git diff" porcelain. Currently, there is no way for them to specify that they would like to see the text-converted version of the diff. This patch adds a "--textconv" option to allow such a plumbing user to allow text conversion. The user can then tell the viewer whether or not they would like text conversion enabled. While it may be tempting add a configuration option rather than requiring each plumbing user to be configured to pass --textconv, that is somewhat dangerous. Text-converted diffs generally cannot be applied directly, so each plumbing user should "opt in" to generating such a diff, either by explicit request of the user or by confirming that their output will not be fed to patch. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-12Merge branch 'jk/diff-convfilter'Libravatar Junio C Hamano1-25/+45
* jk/diff-convfilter: enable textconv for diff in verbose status/commit wt-status: load diff ui config only textconv regular files userdiff: require explicitly allowing textconv refactor userdiff textconv code Conflicts: t/t4030-diff-textconv.sh
2008-11-12Merge branch 'jk/diff-convfilter-test-fix'Libravatar Junio C Hamano1-1/+1
* jk/diff-convfilter-test-fix: Avoid using non-portable `echo -n` in tests. add userdiff textconv tests document the diff driver textconv feature diff: add missing static declaration Conflicts: Documentation/gitattributes.txt
2008-11-08Merge branch 'rs/blame'Libravatar Junio C Hamano1-0/+5
* rs/blame: blame: use xdi_diff_hunks(), get rid of struct patch add xdi_diff_hunks() for callers that only need hunk lengths Allow alternate "low-level" emit function from xdl_diff Always initialize xpparam_t to 0 blame: inline get_patch()
2008-10-26only textconv regular filesLibravatar Jeff King1-0/+2
We treat symlinks as text containing the results of the symlink, so it doesn't make much sense to text-convert them. Similarly gitlink components just end up as the text "Subproject commit $sha1", which we should leave intact. Note that a typechange may be broken into two parts: the removal of the old part and the addition of the new. In that case, we _do_ show the textconv for any part which is the addition or removal of a file we would ordinarily textconv, since it is purely acting on the file contents. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26userdiff: require explicitly allowing textconvLibravatar Jeff King1-15/+11
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>
2008-10-26refactor userdiff textconv codeLibravatar Jeff King1-13/+35
The original implementation of textconv put the conversion into fill_mmfile. This was a bad idea for a number of reasons: - it made the semantics of fill_mmfile unclear. In some cases, it was allocating data (if a text conversion occurred), and in some cases not (if we could use the data directly from the filespec). But the caller had no idea which had happened, and so didn't know whether the memory should be freed - similarly, the caller had no idea if a text conversion had occurred, and so didn't know whether the contents should be treated as binary or not. This meant that we incorrectly guessed that text-converted content was binary and didn't actually show it (unless the user overrode us with "diff.foo.binary = false", which then created problems in plumbing where the text conversion did _not_ occur) - not all callers of fill_mmfile want the text contents. In particular, we don't really want diffstat, whitespace checks, patch id generation, etc, to look at the converted contents. This patch pulls the conversion code directly into builtin_diff, so that we only see the conversion when generating an actual patch. We also then know whether we are doing a conversion, so we can check the binary-ness and free the data from the mmfile appropriately (the previous version leaked quite badly when text conversion was used) Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26diff: add missing static declarationLibravatar Jeff King1-1/+1
This function isn't used outside of diff.c; the 'static' was simply overlooked in the original writing. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-25Always initialize xpparam_t to 0Libravatar Brian Downing1-0/+5
We're going to be adding some parameters to this, so we can't have any uninitialized data in it. Signed-off-by: Brian Downing <bdowning@lavos.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-18diff: add filter for converting binary to textLibravatar Jeff King1-2/+47
When diffing binary files, it is sometimes nice to see the differences of a canonical text form rather than either a binary patch or simply "binary files differ." Until now, the only option for doing this was to define an external diff command to perform the diff. This was a lot of work, since the external command needed to take care of doing the diff itself (including mode changes), and lost the benefit of git's colorization and other options. This patch adds a text conversion option, which converts a file to its canonical format before performing the diff. This is less flexible than an arbitrary external diff, but is much less work to set up. For example: $ echo '*.jpg diff=exif' >>.gitattributes $ git config diff.exif.textconv exiftool $ git config diff.exif.binary false allows one to see jpg diffs represented by the text output of exiftool. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-18diff: introduce diff.<driver>.binaryLibravatar Jeff King1-30/+22
The "diff" gitattribute is somewhat overloaded right now. It can say one of three things: 1. this file is definitely binary, or definitely not (i.e., diff or !diff) 2. this file should use an external diff engine (i.e., diff=foo, diff.foo.command = custom-script) 3. this file should use particular funcname patterns (i.e., diff=foo, diff.foo.(x?)funcname = some-regex) Most of the time, there is no conflict between these uses, since using one implies that the other is irrelevant (e.g., an external diff engine will decide for itself whether the file is binary). However, there is at least one conflicting situation: there is no way to say "use the regular rules to determine whether this file is binary, but if we do diff it textually, use this funcname pattern." That is, currently setting diff=foo indicates that the file is definitely text. This patch introduces a "binary" config option for a diff driver, so that one can explicitly set diff.foo.binary. We default this value to "don't know". That is, setting a diff attribute to "foo" and using "diff.foo.funcname" will have no effect on the binaryness of a file. To get the current behavior, one can set diff.foo.binary to true. This patch also has one additional advantage: it cleans up the interface to the userdiff code a bit. Before, calling code had to know more about whether attributes were false, true, or unset to determine binaryness. Now that binaryness is a property of a driver, we can represent these situations just by passing back a driver struct. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-18diff: unify external diff and funcname parsing codeLibravatar Jeff King1-224/+27
Both sets of code assume that one specifies a diff profile as a gitattribute via the "diff=foo" attribute. They then pull information about that profile from the config as diff.foo.*. The code for each is currently completely separate from the other, which has several disadvantages: - there is duplication as we maintain code to create and search the separate lists of external drivers and funcname patterns - it is difficult to add new profile options, since it is unclear where they should go - the code is difficult to follow, as we rely on the "check if this file is binary" code to find the funcname pattern as a side effect. This is the first step in refactoring the binary-checking code. This patch factors out these diff profiles into "userdiff" drivers. A file with "diff=foo" uses the "foo" driver, which is specified by a single struct. Note that one major difference between the two pieces of code is that the funcname patterns are always loaded, whereas external drivers are loaded only for the "git diff" porcelain; the new code takes care to retain that situation. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-12Replace calls to strbuf_init(&foo, 0) with STRBUF_INIT initializerLibravatar Brandon Casey1-10/+5
Many call sites use strbuf_init(&foo, 0) to initialize local strbuf variable "foo" which has not been accessed since its declaration. These can be replaced with a static initialization using the STRBUF_INIT macro which is just as readable, saves a function call, and takes up fewer lines. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-06Teach git diff about Objective-C syntaxLibravatar Jonathan del Strother1-0/+10
Add support for recognition of Objective-C class & instance methods, C functions, and class implementation/interfaces. Signed-off-by: Jonathan del Strother <jon.delStrother@bestbefore.tv> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-06Merge branch 'maint'Libravatar Shawn O. Pearce1-0/+4
* maint: Update release notes for 1.6.0.3 Teach rebase -i to honor pre-rebase hook docs: describe pre-rebase hook do not segfault if make_cache_entry failed make prefix_path() never return NULL fix bogus "diff --git" header from "diff --no-index" Fix fetch/clone --quiet when stdout is connected builtin-blame: Fix blame -C -C with submodules. bash: remove fetch, push, pull dashed form leftovers Conflicts: diff.c
2008-10-06fix bogus "diff --git" header from "diff --no-index"Libravatar Linus Torvalds1-0/+4
When "git diff --no-index" is given an absolute pathname, it would generate a diff header with the absolute path prepended by the prefix, like: diff --git a/dev/null b/foo Not only is this nonsensical, and not only does it violate the description of diffs given in git-diff(1), but it would produce broken binary diffs. Unlike text diffs, the binary diffs don't contain the filenames anywhere else, and so "git apply" relies on this header to figure out the filename. This patch just refuses to use an invalid name for anything visible in the diff. Now, this fixes the "git diff --no-index --binary a /dev/null" kind of case (and we'll end up using "a" as the basename), but some other insane cases are impossible to handle. If you do git diff --no-index --binary a /bin/echo you'll still get a patch like diff --git a/a b/bin/echo old mode 100644 new mode 100755 index ... and "git apply" will refuse to apply it for a couple of reasons, and the diff is simply bogus. And that, btw, is no longer a bug, I think. It's impossible to know whethe the user meant for the patch to be a rename or not. And as such, refusing to apply it because you don't know what name you should use is probably _exactly_ the right thing to do! Original problem reported by Imre Deak. Test script and problem description by Jeff King. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-02fix openssl headers conflicting with custom SHA1 implementationsLibravatar Nicolas Pitre1-6/+6
On ARM I have the following compilation errors: CC fast-import.o In file included from cache.h:8, from builtin.h:6, from fast-import.c:142: arm/sha1.h:14: error: conflicting types for 'SHA_CTX' /usr/include/openssl/sha.h:105: error: previous declaration of 'SHA_CTX' was here arm/sha1.h:16: error: conflicting types for 'SHA1_Init' /usr/include/openssl/sha.h:115: error: previous declaration of 'SHA1_Init' was here arm/sha1.h:17: error: conflicting types for 'SHA1_Update' /usr/include/openssl/sha.h:116: error: previous declaration of 'SHA1_Update' was here arm/sha1.h:18: error: conflicting types for 'SHA1_Final' /usr/include/openssl/sha.h:117: error: previous declaration of 'SHA1_Final' was here make: *** [fast-import.o] Error 1 This is because openssl header files are always included in git-compat-util.h since commit 684ec6c63c whenever NO_OPENSSL is not set, which somehow brings in <openssl/sha1.h> clashing with the custom ARM version. Compilation of git is probably broken on PPC too for the same reason. Turns out that the only file requiring openssl/ssl.h and openssl/err.h is imap-send.c. But only moving those problematic includes there doesn't solve the issue as it also includes cache.h which brings in the conflicting local SHA1 header file. As suggested by Jeff King, the best solution is to rename our references to SHA1 functions and structure to something git specific, and define those according to the implementation used. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-09-30diff.c: remove duplicate bibtex pattern introduced by merge 92bb9785Libravatar Brandon Casey1-2/+0
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-09-29Merge branch 'bc/master-diff-hunk-header-fix'Libravatar Shawn O. Pearce1-46/+60
* bc/master-diff-hunk-header-fix: Clarify commit error message for unmerged files Use strchrnul() instead of strchr() plus manual workaround Use remove_path from dir.c instead of own implementation Add remove_path: a function to remove as much as possible of a path git-submodule: Fix "Unable to checkout" for the initial 'update' Clarify how the user can satisfy stash's 'dirty state' check. t4018-diff-funcname: test syntax of builtin xfuncname patterns t4018-diff-funcname: test syntax of builtin xfuncname patterns make "git remote" report multiple URLs diff hunk pattern: fix misconverted "\{" tex macro introducers diff: fix "multiple regexp" semantics to find hunk header comment diff: use extended regexp to find hunk headers diff: use extended regexp to find hunk headers diff.*.xfuncname which uses "extended" regex's for hunk header selection diff.c: associate a flag with each pattern and use it for compiling regex diff.c: return pattern entry pointer rather than just the hunk header pattern Conflicts: builtin-merge-recursive.c t/t7201-co.sh xdiff-interface.h
2008-09-29Merge branch 'maint' into bc/master-diff-hunk-header-fixLibravatar Shawn O. Pearce1-11/+1
* maint: (41 commits) Clarify commit error message for unmerged files Use strchrnul() instead of strchr() plus manual workaround Use remove_path from dir.c instead of own implementation Add remove_path: a function to remove as much as possible of a path git-submodule: Fix "Unable to checkout" for the initial 'update' Clarify how the user can satisfy stash's 'dirty state' check. Remove empty directories in recursive merge Documentation: clarify the details of overriding LESS via core.pager Update release notes for 1.6.0.3 checkout: Do not show local changes when in quiet mode for-each-ref: Fix --format=%(subject) for log message without newlines git-stash.sh: don't default to refs/stash if invalid ref supplied maint: check return of split_cmdline to avoid bad config strings builtin-prune.c: prune temporary packs in <object_dir>/pack directory Do not perform cross-directory renames when creating packs Use dashless git commands in setgitperms.perl git-remote: do not use user input in a printf format string make "git remote" report multiple URLs Start draft release notes for 1.6.0.3 git-repack uses --no-repack-object, not --no-repack-delta. ... Conflicts: RelNotes
2008-09-29Merge branch 'bc/maint-diff-hunk-header-fix' into maintLibravatar Shawn O. Pearce1-43/+55
* bc/maint-diff-hunk-header-fix: t4018-diff-funcname: test syntax of builtin xfuncname patterns diff hunk pattern: fix misconverted "\{" tex macro introducers diff: use extended regexp to find hunk headers diff.*.xfuncname which uses "extended" regex's for hunk header selection diff.c: associate a flag with each pattern and use it for compiling regex diff.c: return pattern entry pointer rather than just the hunk header pattern Conflicts: Documentation/gitattributes.txt
2008-09-25Merge branch 'ho/dirstat-by-file'Libravatar Shawn O. Pearce1-1/+9
* ho/dirstat-by-file: diff --dirstat-by-file: count changed files, not lines
2008-09-23t4018-diff-funcname: test syntax of builtin xfuncname patternsLibravatar Brandon Casey1-1/+1
[jc: fixes bibtex pattern breakage exposed by this test] Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-20Merge branch 'bc/maint-diff-hunk-header-fix' into bc/master-diff-hunk-header-fixLibravatar Junio C Hamano1-1/+3
* bc/maint-diff-hunk-header-fix: diff hunk pattern: fix misconverted "\{" tex macro introducers Conflicts: diff.c
2008-09-20diff hunk pattern: fix misconverted "\{" tex macro introducersLibravatar Junio C Hamano1-2/+2
Pointed out by Brandon Casey. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-20diff: fix "multiple regexp" semantics to find hunk header commentLibravatar Junio C Hamano1-1/+1
When multiple regular expressions are concatenated with "\n", they were traditionally AND'ed together, and only a line that matches _all_ of them is taken as a match. This however is unwieldy when multiple regexp feature is used to specify alternatives. This fixes the semantics to take the first match. A nagative pattern, if matches, makes the line to fail as before. A match with a positive pattern will be the final match, and what it captures in $1 is used as the hunk header comment. We could write alternatives using "|" in ERE, but the machinery can only use captured $1 as the hunk header comment (or $0 if there is no match in $1), so you cannot write: "junk ( A | B ) | garbage ( C | D )" and expect both "junk" and "garbage" to get stripped with the existing code. With this fix, you can write it as: "junk ( A | B ) \n garbage ( C | D )" and the way capture works would match the user expectation more naturally. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-19diff: use extended regexp to find hunk headersLibravatar Junio C Hamano1-3/+3
Using ERE elements such as "|" (alternation) by backquoting in BRE is a GNU extension and should not be done in portable programs. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-19Merge branch 'bc/maint-diff-hunk-header-fix' into bc/master-diff-hunk-header-fixLibravatar Junio C Hamano1-14/+17
* bc/maint-diff-hunk-header-fix: diff: use extended regexp to find hunk headers Conflicts: diff.c
2008-09-19diff: use extended regexp to find hunk headersLibravatar Junio C Hamano1-14/+17
Using ERE elements such as "|" (alternation) by backquoting in BRE is a GNU extension and should not be done in portable programs. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-18Merge branch 'bc/maint-diff-hunk-header-fix' into bc/master-diff-hunk-header-fixLibravatar Junio C Hamano1-39/+55
* bc/maint-diff-hunk-header-fix: diff.*.xfuncname which uses "extended" regex's for hunk header selection diff.c: associate a flag with each pattern and use it for compiling regex diff.c: return pattern entry pointer rather than just the hunk header pattern Cosmetical command name fix Start conforming code to "git subcmd" style part 3 t9700/test.pl: remove File::Temp requirement t9700/test.pl: avoid bareword 'STDERR' in 3-argument open() GIT 1.6.0.2 Fix some manual typos. Use compatibility regex library also on FreeBSD Use compatibility regex library also on AIX Update draft release notes for 1.6.0.2 Use compatibility regex library for OSX/Darwin git-svn: Fixes my() parameter list syntax error in pre-5.8 Perl Git.pm: Use File::Temp->tempfile instead of ->new t7501: always use test_cmp instead of diff Start conforming code to "git subcmd" style part 2 diff: Help "less" hide ^M from the output checkout: do not check out unmerged higher stages randomly Conflicts: Documentation/git.txt Documentation/gitattributes.txt Makefile diff.c t/t7201-co.sh
2008-09-18Merge branch 'jc/diff-prefix'Libravatar Junio C Hamano1-6/+40
* jc/diff-prefix: diff: vary default prefix depending on what are compared
2008-09-18diff.*.xfuncname which uses "extended" regex's for hunk header selectionLibravatar Brandon Casey1-0/+5
Currently, the hunk headers produced by 'diff -p' are customizable by setting the diff.*.funcname option in the config file. The 'funcname' option takes a basic regular expression. This functionality was designed using the GNU regex library which, by default, allows using backslashed versions of some extended regular expression operators, even in Basic Regular Expression mode. For example, the following characters, when backslashed, are interpreted according to the extended regular expression rules: ?, +, and |. As such, the builtin funcname patterns were created using some extended regular expression operators. Other platforms which adhere more strictly to the POSIX spec do not interpret the backslashed extended RE operators in Basic Regular Expression mode. This causes the pattern matching for the builtin funcname patterns to fail on those platforms. Introduce a new option 'xfuncname' which uses extended regular expressions, and advertise it _instead_ of funcname. Since most users are on GNU platforms, the majority of funcname patterns are created and tested there. Advertising only xfuncname should help to avoid the creation of non-portable patterns which work with GNU regex but not elsewhere. Additionally, the extended regular expressions may be less ugly and complicated compared to the basic RE since many common special operators do not need to be backslashed. For example, the GNU Basic RE: ^[ ]*\\(\\(public\\|static\\).*\\)$ becomes the following Extended RE: ^[ ]*((public|static).*)$ Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-18diff.c: associate a flag with each pattern and use it for compiling regexLibravatar Brandon Casey1-9/+12
This is in preparation for allowing extended regular expression patterns. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-18diff.c: return pattern entry pointer rather than just the hunk header patternLibravatar Brandon Casey1-27/+28
This is in preparation for associating a flag with each pattern which will control how the pattern is interpreted. For example, as a basic or extended regular expression. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-18Merge branch 'jc/maint-diff-quiet' into maintLibravatar Junio C Hamano1-11/+1
* jc/maint-diff-quiet: diff --quiet: make it synonym to --exit-code >/dev/null diff Porcelain: do not disable auto index refreshing on -C -C
2008-09-16Merge branch 'jc/maint-diff-quiet'Libravatar Junio C Hamano1-11/+1
* jc/maint-diff-quiet: diff --quiet: make it synonym to --exit-code >/dev/null diff Porcelain: do not disable auto index refreshing on -C -C
2008-09-10Merge branch 'jc/maint-hide-cr-in-diff-from-less' into maintLibravatar Junio C Hamano1-1/+8
* jc/maint-hide-cr-in-diff-from-less: diff: Help "less" hide ^M from the output
2008-09-07Merge branch 'jc/hide-cr-in-diff-from-less'Libravatar Junio C Hamano1-1/+8
* jc/hide-cr-in-diff-from-less: diff: Help "less" hide ^M from the output
2008-09-07Teach "git diff -p" to locate PHP class methodsLibravatar Andreas Ericsson1-0/+1
Otherwise it will always print the class-name rather than the name of the function inside that class. While we're at it, reorder the gitattributes manpage to list the built-in funcname pattern names in alphabetical order. Signed-off-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-06diff --quiet: make it synonym to --exit-code >/dev/nullLibravatar Junio C Hamano1-10/+0
The point of --quiet was to return the status as early as possible without doing any extra processing. Well behaved scripts, when they expect to run many diff operations inside, are supposed to run "update-index --refresh" upfront; we do not want them to pay the price of iterating over the index and comparing the contents to fix the stat dirtiness, and we avoided most of the processing in diffcore_std() when --quiet is in effect. But scripts that adhere to the good practice won't have to pay any more price than the necessary lstat(2) that will report stat cleanliness, as long as only -q is given without any fancier diff options. More importantly, users who do ask for "--quiet -M --filter=D" (in order to notice only the deletion, not paths that disappeared only because they have been renamed away) deserve to get the result they asked for, even it means they have to pay the extra price; the alternative is to get a cheap early return that gives a result they did not ask for, which is much worse. Signed-off-by: Junio C Hamano <gitster@pobox.com>