Wikimedia Bugzilla is closed!

Minor PHP warning with string padding, wiki text is:
==========================
{{padright:||||||||}}
==========================

HTML output on a wiki with error_reporting(E_ALL) includes:
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<b>Warning</b>:  str_pad() [<a href='function.str-pad'>function.str-pad</a>]:
Padding string cannot be empty. in
<b>/var/www/hosts/mediawiki/phase3/includes/CoreParserFunctions.php</b> on line
<b>155</b><br />
==========================

Maybe just return $string when the padding value is empty? e.g. something
roughly like:
==========================
function padright( $parser, $string = '', $length = 0, $char = 0 ) {
if ((string)$char) {
return str_pad( $string, $length, (string)$char, STR_PAD_RIGHT );
} else {
return $string;
}
}
==========================

... or perhaps in this situation just set it to a generally acceptable default:
==========================
if (!(string)$char) $char = "0";
return str_pad( $string, $length, (string)$char, STR_PAD_RIGHT );
==========================