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[PATCH] Add --diff-filter= output restriction to diff-* family.

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This is a halfway between debugging aid and a helper to write an
ultra-smart merge scripts.  The new option takes a string that
consists of a list of "status" letters, and limits the diff
output to only those classes of changes, with two exceptions:

 - A broken pair (aka "complete rewrite"), does not match D
   (deleted) or N (created).  Use B to look for them.

 - The letter "A" in the diff-filter string does not match
   anything itself, but causes the entire diff that contains
   selected patches to be output (this behaviour is similar to
   that of --pickaxe-all for the -S option).

For example,

    $ git-rev-list HEAD |
      git-diff-tree --stdin -s -v -B -C --diff-filter=BCR

shows a list of commits that have complete rewrite, copy, or
rename.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Junio C Hamano
2005-06-11 20:57:13 -07:00
committed by Linus Torvalds
parent a7ca65405c
commit f2ce9fde57
7 changed files with 108 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
diff-cache.c
View File

@ -11,6 +11,7 @@ static const char *pickaxe = NULL;
static int pickaxe_opts = 0;
static int diff_break_opt = -1;
static const char *orderfile = NULL;
static const char *diff_filter = NULL;
/* A file entry went away or appeared */
static void show_file(const char *prefix, struct cache_entry *ce, unsigned char *sha1, unsigned int mode)
@ -224,6 +225,10 @@ int main(int argc, const char **argv)
pickaxe = arg + 2;
continue;
}
if (!strncmp(arg, "--diff-filter=", 14)) {
diff_filter = arg + 14;
continue;
}
if (!strncmp(arg, "-O", 2)) {
orderfile = arg + 2;
continue;
@ -263,7 +268,7 @@ int main(int argc, const char **argv)
detect_rename, diff_score_opt,
pickaxe, pickaxe_opts,
diff_break_opt,
orderfile);
diff_flush(diff_output_format, 1);
orderfile, diff_filter);
diff_flush(diff_output_format);
return ret;
}