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>
diff --git a/diff.c b/diff.c
index e1be189..6c63b87 100644
--- a/diff.c
+++ b/diff.c
@@ -13,6 +13,7 @@
#include "utf8.h"
#include "userdiff.h"
#include "sigchain.h"
+#include "submodule.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
@@ -1453,6 +1454,17 @@
const char *a_prefix, *b_prefix;
const char *textconv_one = NULL, *textconv_two = NULL;
+ if (DIFF_OPT_TST(o, SUBMODULE_LOG) &&
+ (!one->mode || S_ISGITLINK(one->mode)) &&
+ (!two->mode || S_ISGITLINK(two->mode))) {
+ const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
+ const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
+ show_submodule_summary(o->file, one ? one->path : two->path,
+ one->sha1, two->sha1,
+ del, add, reset);
+ return;
+ }
+
if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
textconv_one = get_textconv(one);
textconv_two = get_textconv(two);
@@ -2640,6 +2652,12 @@
DIFF_OPT_CLR(options, ALLOW_TEXTCONV);
else if (!strcmp(arg, "--ignore-submodules"))
DIFF_OPT_SET(options, IGNORE_SUBMODULES);
+ else if (!strcmp(arg, "--submodule"))
+ DIFF_OPT_SET(options, SUBMODULE_LOG);
+ else if (!prefixcmp(arg, "--submodule=")) {
+ if (!strcmp(arg + 12, "log"))
+ DIFF_OPT_SET(options, SUBMODULE_LOG);
+ }
/* misc options */
else if (!strcmp(arg, "-z"))
