alj62888 wrote:

I'm not a php programmer, but I've done a little tracing and in SF_FormPrinter.php line 817 this is called:

$default_value = $wgParser->recursiveTagParse( $sub_components[1] );

and then the actual converting of the link to the marked-up version happens in Parser.php line 1166:

$text = $this->doMagicLinks( $text );

Hope this helps.

Q: Just a guess, but should the default value be parsed as markup like it is?

Yes, sometimes it makes sense to parse the default value - like when it contains an #ask query. It's really only when it holds a URL that problems seem to occur.

alj62888 wrote:

I'm musing on a private fix for this with a new param for the parser to skip the doMagicLinks() call. Is the presence of '#ask' the only thing to test for?

Well, if it's a private fix, it depends entirely on what's in your wiki.

alj62888 wrote:

I mean are there any other reasons, other than #ask, that a default value may need to be parsed?

Sure - #ifexists, #time, #expr, #show....

I recommend switching to recursivePreprocess from recursiveTagParse which handles all {{-constructs while leaving links, headers, bold etc. alone.