make checkout-index '-a' flag saner.

The original semantics of pretending as if all files were
specified where '-a' appeared and using only the flags given so
far was too confusing.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

checkout-index.c

@@ -82,8 +82,9 @@ static struct cache_file cache_file;
 
 int main(int argc, char **argv)
 {
-	int i, force_filename = 0;
+	int i;
 	int newfd = -1;
+	int all = 0;
 
 	if (read_cache() < 0) {
 		die("invalid cache");
@@ -91,28 +92,28 @@ int main(int argc, char **argv)
 
 	for (i = 1; i < argc; i++) {
 		const char *arg = argv[i];
-		if (!force_filename) {
-			if (!strcmp(arg, "-a")) {
-				checkout_all();
-				continue;
-			}
+
 		if (!strcmp(arg, "--")) {
-				force_filename = 1;
+			i++;
+			break;
+		}
+		if (!strcmp(arg, "-a") || !strcmp(arg, "--all")) {
+			all = 1;
 			continue;
 		}
-			if (!strcmp(arg, "-f")) {
+		if (!strcmp(arg, "-f") || !strcmp(arg, "--force")) {
 			state.force = 1;
 			continue;
 		}
-			if (!strcmp(arg, "-q")) {
+		if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) {
 			state.quiet = 1;
 			continue;
 		}
-			if (!strcmp(arg, "-n")) {
+		if (!strcmp(arg, "-n") || !strcmp(arg, "--no-create")) {
 			state.not_new = 1;
 			continue;
 		}
-			if (!strcmp(arg, "-u")) {
+		if (!strcmp(arg, "-u") || !strcmp(arg, "--index")) {
 			state.refresh_cache = 1;
 			if (newfd < 0)
 				newfd = hold_index_file_for_update
@@ -129,7 +130,9 @@ int main(int argc, char **argv)
 		}
 		if (arg[0] == '-')
 			usage(checkout_cache_usage);
+		break;
 	}
+
 	if (state.base_dir_len) {
 		/* when --prefix is specified we do not
 		 * want to update cache.
@@ -140,9 +143,19 @@ int main(int argc, char **argv)
 		}
 		state.refresh_cache = 0;
 	}
+
+	/* Check out named files first */
+	for ( ; i < argc; i++) {
+		const char *arg = argv[i];
+
+		if (all)
+			die("git-checkout-index: don't mix '--all' and explicit filenames");
 		checkout_file(arg);
 	}
 
+	if (all)
+		checkout_all();
+
 	if (0 <= newfd &&
 	    (write_cache(newfd, active_cache, active_nr) ||
 	     commit_index_file(&cache_file)))