function bbp_get_topic_revision_log( $topic_id = 0 ) {

		// Create necessary variables
		$topic_id     = bbp_get_topic_id( $topic_id );
		$revision_log = bbp_get_topic_raw_revision_log( $topic_id );

		if ( empty( $topic_id ) || empty( $revision_log ) || ! is_array( $revision_log ) ) {
			return false;
		}

		$revisions = bbp_get_topic_revisions( $topic_id );
		if ( empty( $revisions ) ) {
			return false;
		}

		$retval = "\n\n" . '<ul id="bbp-topic-revision-log-' . esc_attr( $topic_id ) . '" class="bbp-topic-revision-log">' . "\n\n";

		// Loop through revisions
		foreach ( (array) $revisions as $revision ) {

			if ( empty( $revision_log[ $revision->ID ] ) ) {
				$author_id = $revision->post_author;
				$reason    = '';
			} else {
				$author_id = $revision_log[ $revision->ID ]['author'];
				$reason    = $revision_log[ $revision->ID ]['reason'];
			}

			$author = bbp_get_author_link( array( 'size' => 14, 'link_text' => bbp_get_topic_author_display_name( $revision->ID ), 'post_id' => $revision->ID ) );
			$since  = bbp_get_time_since( bbp_convert_date( $revision->post_modified ) );

			$retval .= "\t" . '<li id="bbp-topic-revision-log-' . esc_attr( $topic_id ) . '-item-' . esc_attr( $revision->ID ) . '" class="bbp-topic-revision-log-item">' . "\n";
			if ( ! empty( $reason ) ) {
				$retval .= "\t\t" . sprintf( esc_html__( 'This topic was modified %1$s by %2$s. Reason: %3$s', 'bbpress' ), esc_html( $since ), $author, esc_html( $reason ) ) . "\n";
			} else {
				$retval .= "\t\t" . sprintf( esc_html__( 'This topic was modified %1$s by %2$s.',              'bbpress' ), esc_html( $since ), $author ) . "\n";
			}
			$retval .= "\t" . '</li>' . "\n";
		}

		$retval .= "\n" . '</ul>' . "\n\n";

		// Filter & return
		return apply_filters( 'bbp_get_topic_revision_log', $retval, $topic_id );
	}