tag: allow lookup_tag to handle arbitrary repositories

diff --git a/submodule.c b/submodule.c
index edc3a206d7cb3b23c7779ddd48595df6b927c2f2..6688dd5d45949597d7d5761c9b88ea9fcceabf2d 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -517,8 +517,8 @@ static void show_submodule_header(struct diff_options *o, const char *path,
         * Attempt to lookup the commit references, and determine if this is
         * a fast forward or fast backwards update.
         */
-       *left = lookup_commit_reference(one);
-       *right = lookup_commit_reference(two);
+       *left = lookup_commit_reference(the_repository, one);
+       *right = lookup_commit_reference(the_repository, two);
 
        /*
         * Warn about missing commits in the submodule project, but only if
@@ -740,12 +740,14 @@ static void collect_changed_submodules_cb(struct diff_queue_struct *q,
                else {
                        name = default_name_or_path(p->two->path);
                        /* make sure name does not collide with existing one */
-                       submodule = submodule_from_name(the_repository, commit_oid, name);
+                       if (name)
+                               submodule = submodule_from_name(the_repository,
+                                                               commit_oid, name);
                        if (submodule) {
                                warning("Submodule in commit %s at path: "
                                        "'%s' collides with a submodule named "
                                        "the same. Skipping it.",
-                                       oid_to_hex(commit_oid), name);
+                                       oid_to_hex(commit_oid), p->two->path);
                                name = NULL;
                        }
                }
@@ -1169,8 +1171,10 @@ int submodule_touches_in_range(struct object_id *excl_oid,
 
        argv_array_push(&args, "--"); /* args[0] program name */
        argv_array_push(&args, oid_to_hex(incl_oid));
-       argv_array_push(&args, "--not");
-       argv_array_push(&args, oid_to_hex(excl_oid));
+       if (!is_null_oid(excl_oid)) {
+               argv_array_push(&args, "--not");
+               argv_array_push(&args, oid_to_hex(excl_oid));
+       }
 
        collect_changed_submodules(&subs, &args);
        ret = subs.nr;