directory-rename-detection.txt: technical docs on abilities and limitations

diff --git a/builtin/branch.c b/builtin/branch.c
index 5bd2a0dd4891ce0d42ad897c7b5fe0f66ca73be4..5217ba3bdebc2255e95260fdb097166d3617e120 100644 (file)
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -391,7 +391,6 @@ static void print_ref_list(struct ref_filter *filter, struct ref_sorting *sortin
        struct ref_array array;
        int maxwidth = 0;
        const char *remote_prefix = "";
-       struct strbuf out = STRBUF_INIT;
        char *to_free = NULL;
 
        /*
@@ -419,7 +418,10 @@ static void print_ref_list(struct ref_filter *filter, struct ref_sorting *sortin
        ref_array_sort(sorting, &array);
 
        for (i = 0; i < array.nr; i++) {
-               format_ref_array_item(array.items[i], format, &out);
+               struct strbuf out = STRBUF_INIT;
+               struct strbuf err = STRBUF_INIT;
+               if (format_ref_array_item(array.items[i], format, &out, &err))
+                       die("%s", err.buf);
                if (column_active(colopts)) {
                        assert(!filter->verbose && "--column and --verbose are incompatible");
                         /* format to a string_list to let print_columns() do its job */
@@ -428,6 +430,7 @@ static void print_ref_list(struct ref_filter *filter, struct ref_sorting *sortin
                        fwrite(out.buf, 1, out.len, stdout);
                        putchar('\n');
                }
+               strbuf_release(&err);
                strbuf_release(&out);
        }
 
@@ -497,7 +500,7 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 
        if (!skip_prefix(oldref.buf, "refs/heads/", &interpreted_oldname) ||
            !skip_prefix(newref.buf, "refs/heads/", &interpreted_newname)) {
-               die("BUG: expected prefix missing for refs");
+               BUG("expected prefix missing for refs");
        }
 
        if (copy)
@@ -589,8 +592,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                OPT__QUIET(&quiet, N_("suppress informational messages")),
                OPT_SET_INT('t', "track",  &track, N_("set up tracking mode (see git-pull(1))"),
                        BRANCH_TRACK_EXPLICIT),
-               { OPTION_SET_INT, 0, "set-upstream", &track, NULL, N_("do not use"),
-                       PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, BRANCH_TRACK_OVERRIDE },
+               OPT_SET_INT_F(0, "set-upstream", &track, N_("do not use"),
+                       BRANCH_TRACK_OVERRIDE, PARSE_OPT_HIDDEN),
                OPT_STRING('u', "set-upstream-to", &new_upstream, N_("upstream"), N_("change the upstream info")),
                OPT_BOOL(0, "unset-upstream", &unset_upstream, N_("Unset the upstream info")),
                OPT__COLOR(&branch_use_color, N_("use colored output")),
@@ -698,7 +701,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                 * If no sorting parameter is given then we default to sorting
                 * by 'refname'. This would give us an alphabetically sorted
                 * array with the 'HEAD' ref at the beginning followed by
-                * local branches 'refs/heads/...' and finally remote-tacking
+                * local branches 'refs/heads/...' and finally remote-tracking
                 * branches 'refs/remotes/...'.
                 */
                if (!sorting)