void trailer_info_release(struct trailer_info *info);
+/*
+ * Format the trailers from the commit msg "msg" into the strbuf "out".
+ * Note two caveats about "opts":
+ *
+ * - this is primarily a helper for pretty.c, and not
+ * all of the flags are supported.
+ *
+ * - this differs from process_trailers slightly in that we always format
+ * only the trailer block itself, even if the "only_trailers" option is not
+ * set.
+ */
+void format_trailers_from_commit(struct strbuf *out, const char *msg,
+ const struct process_trailer_options *opts);
+
#endif /* TRAILER_H */