Wikimedia Bugzilla is closed!

In r16052, when Tim was adding the OT_PREPROCESS output type, he changed 

-                 if ( $this->mOutputType == OT_HTML || $this->mOutputType ==
OT_WIKI ) {
+                 if ( !$this->mOutputType != OT_MSG ) {

That should, of course, be

+                 if ( $this->mOutputType != OT_MSG ) {

with no ! before $this->mOutputType, an integer variable.  The bug is on line
2719, and I'm not sure what actual effect it has, since I haven't looked too
closely at this bit of code (variable substitution).