revision.c: explain what tree_difference does

diff --git a/builtin-rev-list.c b/builtin-rev-list.c
index fb7fc92145b6a8baec340176abf40c6b37f45a8e..c2db5a5b037babf9020353d9b11dc348915b6c1b 100644 (file)
--- a/builtin-rev-list.c
+++ b/builtin-rev-list.c
@@ -54,6 +54,12 @@ static void show_commit(struct commit *commit)
                fputs(header_prefix, stdout);
        if (commit->object.flags & BOUNDARY)
                putchar('-');
+       else if (revs.left_right) {
+               if (commit->object.flags & SYMMETRIC_LEFT)
+                       putchar('<');
+               else
+                       putchar('>');
+       }
        if (revs.abbrev_commit && revs.abbrev)
                fputs(find_unique_abbrev(commit->object.sha1, revs.abbrev),
                      stdout);
@@ -220,6 +226,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
        int i;
        int read_from_stdin = 0;
 
+       git_config(git_default_config);
        init_revisions(&revs, prefix);
        revs.abbrev = 0;
        revs.commit_format = CMIT_FMT_UNSPECIFIED;