[PATCH] Add --diff-filter= output restriction to diff-* family.
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>
diff --git a/diff-helper.c b/diff-helper.c
index 04e6f2c..5a3198a 100644
--- a/diff-helper.c
+++ b/diff-helper.c
@@ -8,17 +8,16 @@
static const char *pickaxe = NULL;
static int pickaxe_opts = 0;
static const char *orderfile = NULL;
+static const char *diff_filter = NULL;
static int line_termination = '\n';
static int inter_name_termination = '\t';
static void flush_them(int ac, const char **av)
{
- diffcore_std(av + 1,
- 0, 0, /* no renames */
- pickaxe, pickaxe_opts,
- -1, /* no breaks */
- orderfile);
- diff_flush(DIFF_FORMAT_PATCH, 0);
+ diffcore_std_no_resolve(av + 1,
+ pickaxe, pickaxe_opts,
+ orderfile, diff_filter);
+ diff_flush(DIFF_FORMAT_PATCH);
}
static const char *diff_helper_usage =
@@ -38,6 +37,10 @@
}
else if (!strcmp(av[1], "--pickaxe-all"))
pickaxe_opts = DIFF_PICKAXE_ALL;
+ else if (!strncmp(av[1], "--diff-filter=", 14))
+ diff_filter = av[1] + 14;
+ else if (!strncmp(av[1], "-O", 2))
+ orderfile = av[1] + 2;
else
usage(diff_helper_usage);
ac--; av++;
