- * "git pull" accepted "--dry-run", gave it to underlying "git fetch" but
- ignored the option itself, resulting in a bogus attempt to merge
- unrelated commit (29609e68).
+ * "git diff" could show ambiguous abbreviation of blob object names on
+ its "index" line (3e5a188).
+
+ * "git merge --log" used to replace the custom message given by "-m" with
+ the shortlog, instead of appending to it (tc/merge-m-log).