Function message_is_empty

sequencer.c:1227–1233

* Find out if the message in the strbuf contains only whitespace and * Signed-off-by lines. */

 * Signed-off-by lines.
 */
int message_is_empty(const struct strbuf *sb,
		     enum commit_msg_cleanup_mode cleanup_mode)
{
	if (cleanup_mode == COMMIT_MSG_CLEANUP_NONE && sb->len)
		return 0;
	return rest_is_empty(sb, 0);
}

/*
 * See if the user edited the message in the editor or left what