diff: don't presume empty file when corresponding object is missing

diff --git a/builtin-rev-parse.c b/builtin-rev-parse.c
index 37d02335212dea9672e2472970f66dc4ac95dfd1..a8c5043dedd785b8fc43c0921edd01e2adac65e1 100644 (file)
--- a/builtin-rev-parse.c
+++ b/builtin-rev-parse.c
@@ -41,6 +41,7 @@ static int is_rev_argument(const char *arg)
                "--all",
                "--bisect",
                "--dense",
+               "--branches=",
                "--branches",
                "--header",
                "--max-age=",
@@ -51,8 +52,11 @@ static int is_rev_argument(const char *arg)
                "--objects-edge",
                "--parents",
                "--pretty",
+               "--remotes=",
                "--remotes",
+               "--glob=",
                "--sparse",
+               "--tags=",
                "--tags",
                "--topo-order",
                "--date-order",
@@ -569,18 +573,43 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
                                for_each_ref_in("refs/bisect/good", anti_reference, NULL);
                                continue;
                        }
+                       if (!prefixcmp(arg, "--branches=")) {
+                               for_each_glob_ref_in(show_reference, arg + 11,
+                                       "refs/heads/", NULL);
+                               continue;
+                       }
                        if (!strcmp(arg, "--branches")) {
                                for_each_branch_ref(show_reference, NULL);
                                continue;
                        }
+                       if (!prefixcmp(arg, "--tags=")) {
+                               for_each_glob_ref_in(show_reference, arg + 7,
+                                       "refs/tags/", NULL);
+                               continue;
+                       }
                        if (!strcmp(arg, "--tags")) {
                                for_each_tag_ref(show_reference, NULL);
                                continue;
                        }
+                       if (!prefixcmp(arg, "--glob=")) {
+                               for_each_glob_ref(show_reference, arg + 7, NULL);
+                               continue;
+                       }
+                       if (!prefixcmp(arg, "--remotes=")) {
+                               for_each_glob_ref_in(show_reference, arg + 10,
+                                       "refs/remotes/", NULL);
+                               continue;
+                       }
                        if (!strcmp(arg, "--remotes")) {
                                for_each_remote_ref(show_reference, NULL);
                                continue;
                        }
+                       if (!strcmp(arg, "--show-toplevel")) {
+                               const char *work_tree = get_git_work_tree();
+                               if (work_tree)
+                                       puts(work_tree);
+                               continue;
+                       }
                        if (!strcmp(arg, "--show-prefix")) {
                                if (prefix)
                                        puts(prefix);