git/xdiff, branch v1.4.2

Merge branch 'lt/merge-tree'

2006-07-13T05:31:22Z

* lt/merge-tree: Improved three-way blob merging code Prepare "git-merge-tree" for future work xdiff: generate "anti-diffs" aka what is common to two files

Fix more typos, primarily in the code

2006-07-10T07:36:44Z

The only visible change is that git-blame doesn't understand "--compability" anymore, but it does accept "--compatibility" instead, which is already documented. Signed-off-by: Pavel Roskin Signed-off-by: Junio C Hamano

xdiff: generate "anti-diffs" aka what is common to two files

2006-06-29T05:24:32Z

This fairly trivial patch adds a new XDL_EMIT_xxx flag to tell libxdiff that we don't want to generate the _diff_ between two files, we want to see the lines that are _common_ to two files. So when you set XDL_EMIT_COMMON, xdl_diff() will do everything exactly like it used to do, but the output records it generates just contain the lines that aren't part of the diff. This is for doing things like generating the common base case for a file that was added in both branches. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano

Teach diff about -b and -w flags

2006-06-24T00:35:27Z

This adds -b (--ignore-space-change) and -w (--ignore-all-space) flags to diff. The main part of the patch is teaching libxdiff about it. [jc: renamed xdl_line_match() to xdl_recmatch() since the former is used for different purposes in xpatchi.c which is in the parts of the upstream source we do not use.] Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano

xdiff: minor changes to match libxdiff-0.21

2006-06-20T01:43:49Z

This reformats the change 621c53cc082299eaf69e9f2dc0274547c7d87fb0 introduced to match what upstream author implemented in libxdiff-0.21 without changing any logic (hopefully ;-). This is to help keep us in sync with the upstream. Signed-off-by: Junio C Hamano

xdiff: post-process hunks to make them consistent.

2006-04-13T23:48:45Z

xdiff/xdiffi.c: fix warnings about possibly uninitialized variables

2006-04-09T06:35:22Z

Compiling this module gave the following warnings (some double dutch!): xdiff/xdiffi.c: In functie 'xdl_recs_cmp': xdiff/xdiffi.c:298: let op: 'spl.i1' may be used uninitialized in this function xdiff/xdiffi.c:298: let op: 'spl.i2' may be used uninitialized in this function xdiff/xdiffi.c:219: let op: 'fbest1' may be used uninitialized in this function xdiff/xdiffi.c:219: let op: 'bbest1' may be used uninitialized in this function A superficial tracking of their usage, without deeper knowledge about the algorithm, indeed confirms that there are code paths on which these variables will be used uninitialized. In practice these code paths might never be reached, but then these fixes will not change the algorithm. If these code paths are ever reached we now at least have a predictable outcome. And should the very small performance impact of these initializations be noticeable, then they should at least be replaced by comments why certain code paths will never be reached. Some extra initializations in this patch now fix the warnings.

Clean-up trivially redundant diff.

2006-04-04T07:11:09Z

Also corrects the line numbers in unified output when using zero lines context.

xdiff: Show function names in hunk headers.

2006-03-28T02:43:51Z

The speed of the built-in diff generator is nice; but the function names shown by `diff -p' are /really/ nice. And I hate having to choose. So, we hack xdiff to find the function names and print them. xdiff has grown a flag to say whether to dig up the function names. The builtin_diff function passes this flag unconditionally. I suppose it could parse GIT_DIFF_OPTS, but it doesn't at the moment. I've also reintroduced the `function name' into the test suite, from which it was removed in commit 3ce8f089. The function names are parsed by a particularly stupid algorithm at the moment: it just tries to find a line in the `old' file, from before the start of the hunk, whose first character looks plausible. Still, it's most definitely a start. Signed-off-by: Mark Wooding Signed-off-by: Junio C Hamano

built-in diff: minimum tweaks

2006-03-26T00:50:00Z

This fixes up a couple of minor issues with the real built-in diff to be more usable: - Omit ---/+++ header unless we emit diff output; - Detect and punt binary diff like GNU does; - Honor GIT_DIFF_OPTS minimally (only -u and --unified= are currently supported); - Omit line count of 1 from "@@ -l,k +m,n @@" hunk header (i.e. when k == 1 or n == 1) - Adjust testsuite for the lack of -p support. Signed-off-by: Junio C Hamano