Merge branch 'pw/stash-p-pathspec-fixes' into jch

"git stash -p <pathspec>" improvements.

* pw/stash-p-pathspec-fixes:
  stash: allow "git stash [<options>] --patch <pathspec>" to assume push
  stash: allow "git stash -p <pathspec>" to assume push again

Author: gitster

builtin/stash.c

@@ -1789,11 +1789,15 @@ static int push_stash(int argc, const char **argv, const char *prefix,
 	int ret;
 
 	if (argc) {
-		force_assume = !strcmp(argv[0], "-p");
+		int flags = PARSE_OPT_KEEP_DASHDASH;
+
+		if (push_assumed)
+			flags |= PARSE_OPT_STOP_AT_NON_OPTION;
+
 		argc = parse_options(argc, argv, prefix, options,
 				     push_assumed ? git_stash_usage :
-				     git_stash_push_usage,
-				     PARSE_OPT_KEEP_DASHDASH);
+				     git_stash_push_usage, flags);
+		force_assume |= patch_mode;
 	}
 
 	if (argc) {

t/t3903-stash.sh

@@ -1177,6 +1177,25 @@ test_expect_success 'stash -- <pathspec> stashes and restores the file' '
 	test_path_is_file bar
 '
 
+test_expect_success 'stash --patch <pathspec> stash and restores the file' '
+	cat file >expect-file &&
+	echo changed-file >file &&
+	echo changed-other-file >other-file &&
+	echo a | git stash -m "stash bar" --patch file &&
+	test_cmp expect-file file &&
+	echo changed-other-file >expect &&
+	test_cmp expect other-file &&
+	git stash pop &&
+	test_cmp expect other-file &&
+	echo changed-file >expect &&
+	test_cmp expect file
+'
+
+test_expect_success 'stash <pathspec> -p is rejected' '
+	test_must_fail git stash file -p 2>err &&
+	test_grep "subcommand wasn${SQ}t specified; ${SQ}push${SQ} can${SQ}t be assumed due to unexpected token ${SQ}file${SQ}" err
+'
+
 test_expect_success 'stash -- <pathspec> stashes in subdirectory' '
 	mkdir sub &&
 	>foo &&