cvsserver: add comments about database schema/usage

diff --git a/diffcore-rename.c b/diffcore-rename.c
index e6f9be64cfed2984f1ebd0364ae1e9bfabc35de7..512d0ac5fd2bc0acfb57147a6eb77f61f92b7c7e 100644 (file)
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -512,9 +512,15 @@ void diffcore_rename(struct diff_options *options)
                        else if (options->single_follow &&
                                 strcmp(options->single_follow, p->two->path))
                                continue; /* not interested */
+                       else if (!DIFF_OPT_TST(options, RENAME_EMPTY) &&
+                                is_empty_blob_sha1(p->two->sha1))
+                               continue;
                        else
                                locate_rename_dst(p->two, 1);
                }
+               else if (!DIFF_OPT_TST(options, RENAME_EMPTY) &&
+                        is_empty_blob_sha1(p->one->sha1))
+                       continue;
                else if (!DIFF_PAIR_UNMERGED(p) && !DIFF_FILE_VALID(p->two)) {
                        /*
                         * If the source is a broken "delete", and