} else {
			if ( $onlyAuthor ) {
				$reason = wfMessage(
					'excontentauthor',
					'$1',
					$onlyAuthor
				)->inContentLanguage()->text();
			} else {
				$reason = wfMessage( 'excontent', '$1' )->inContentLanguage()->text();
			}
		}
		if ( $reason == '-' ) {
			// Allow these UI messages to be blanked out cleanly
			return '';
		}
		// Max content length = max comment length - length of the comment (excl. $1)
		$maxLength = CommentStore::COMMENT_CHARACTER_LIMIT - ( strlen( $reason ) - 2 );
		$text = $content ? $content->getTextForSummary( $maxLength ) : '';
		if ( $blank && !$text ) {
			// Don't display "content before blanking was ''" as misleading
			// This can happen if the content before blanking was two unclosed square brackets, for example
			// Do display `content was ""` if the page was always blank, though
			return false;
		}
		// Now replace the '$1' placeholder
		$reason = str_replace( '$1', $text, $reason );
		return $reason;
	}