Wikimedia Bugzilla is closed!

I would like to display exceptions to the end user, but since exceptions cannot be associated with i18n message ids, this is impossible.  I assume that this is by design?

Otherwise, if it is sometimes appropriate to display messages, they should behave something like:

class Surprise extends MWException {
  function __construct( $arg1, $arg2 ) {
    $this->mwMessage = wfMessage( 'msgname', $arg1, $arg2 );
  }

  function getMessage() {
    return $this->mwMessage->text();
  }
}