X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-rev-parse.c;h=9aa049ec170b0125fddde29adda3c720c8a7b8ee;hb=1500f7bc1366e71edb7e8a31f3cf5614e9591cc2;hp=f8d8548e9cddd7d2d123fcf0fdee513754df86c1;hpb=29182f7da4b31b11f82281a9a03edd082975dceb;p=git.git

diff --git a/builtin-rev-parse.c b/builtin-rev-parse.c
index f8d8548e9..9aa049ec1 100644
--- a/builtin-rev-parse.c
+++ b/builtin-rev-parse.c
@@ -94,6 +94,14 @@ static void show(const char *arg)
 		puts(arg);
 }
 
+/* Like show(), but with a negation prefix according to type */
+static void show_with_type(int type, const char *arg)
+{
+	if (type != show_type)
+		putchar('^');
+	show(arg);
+}
+
 /* Output a revision, only if filter allows it */
 static void show_rev(int type, const unsigned char *sha1, const char *name)
 {
@@ -101,8 +109,6 @@ static void show_rev(int type, const unsigned char *sha1, const char *name)
 		return;
 	def = NULL;
 
-	if (type != show_type)
-		putchar('^');
 	if (symbolic && name) {
 		if (symbolic == SHOW_SYMBOLIC_FULL) {
 			unsigned char discard[20];
@@ -119,20 +125,20 @@ static void show_rev(int type, const unsigned char *sha1, const char *name)
 				 */
 				break;
 			case 1: /* happy */
-				show(full);
+				show_with_type(type, full);
 				break;
 			default: /* ambiguous */
 				error("refname '%s' is ambiguous", name);
 				break;
 			}
 		} else {
-			show(name);
+			show_with_type(type, name);
 		}
 	}
 	else if (abbrev)
-		show(find_unique_abbrev(sha1, abbrev));
+		show_with_type(type, find_unique_abbrev(sha1, abbrev));
 	else
-		show(sha1_to_hex(sha1));
+		show_with_type(type, sha1_to_hex(sha1));
 }
 
 /* Output a flag, only if filter allows it. */
@@ -235,6 +241,36 @@ static int try_difference(const char *arg)
 	return 0;
 }
 
+static int try_parent_shorthands(const char *arg)
+{
+	char *dotdot;
+	unsigned char sha1[20];
+	struct commit *commit;
+	struct commit_list *parents;
+	int parents_only;
+
+	if ((dotdot = strstr(arg, "^!")))
+		parents_only = 0;
+	else if ((dotdot = strstr(arg, "^@")))
+		parents_only = 1;
+
+	if (!dotdot || dotdot[2])
+		return 0;
+
+	*dotdot = 0;
+	if (get_sha1(arg, sha1))
+		return 0;
+
+	if (!parents_only)
+		show_rev(NORMAL, sha1, arg);
+	commit = lookup_commit_reference(sha1);
+	for (parents = commit->parents; parents; parents = parents->next)
+		show_rev(parents_only ? NORMAL : REVERSED,
+				parents->item->object.sha1, arg);
+
+	return 1;
+}
+
 static int parseopt_dump(const struct option *o, const char *arg, int unset)
 {
 	struct strbuf *parsed = o->value;
@@ -262,7 +298,7 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
 {
 	static int keep_dashdash = 0;
 	static char const * const parseopt_usage[] = {
-		"git-rev-parse --parseopt [options] -- [<args>...]",
+		"git rev-parse --parseopt [options] -- [<args>...]",
 		NULL
 	};
 	static struct option parseopt_opts[] = {
@@ -381,7 +417,7 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
 		return cmd_parseopt(argc - 1, argv + 1, prefix);
 
 	prefix = setup_git_directory();
-	git_config(git_default_config);
+	git_config(git_default_config, NULL);
 	for (i = 1; i < argc; i++) {
 		const char *arg = argv[i];
 
@@ -567,6 +603,8 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
 		/* Not a flag argument */
 		if (try_difference(arg))
 			continue;
+		if (try_parent_shorthands(arg))
+			continue;
 		name = arg;
 		type = NORMAL;
 		if (*arg == '^') {