[Phpwiki-talk] Plugins Executed Twice, Displayed Only Once?

[Rui C. <rui...@ac...>]

Hello there.

I'm running a heavily customized version of PhpWiki at 
http://the.taoofmac.com, and have come up with an interesting problem.

It might be from my tweaks (I forked my code from PhpWiki sometime 
around 1.3.7, I think), but plugins in the node contents seem to be 
invoked twice, i.e:

* if I use PageTrails as part of browse.tmpl, it is only invoked once
* If I add <?plugin PageTrails ?> to my Sandbox, the plugin code (i.e., 
run()) gets invoked twice, even though the output is only shown once.

This is tolerable for simple stuff like PageTrails, but a _major_ 
nuisance for TitleSearch and whatnot (which is what I'm trying to 
optimize).

I'm blaming it on template expansion (which I haven't modified myself 
and might have a few lingering bugs not present in current CVS), but 
instead of upgrading (which would mean refactoring all my current 
custom plugins and subpage handling) what I would _really_ like are 
some pointers as to how to go about debugging this, namely:

* In which conditions are plugins expanded
* if dump_template() is useful for debugging that (the initial results 
aren't satisfactory, but I might have missed something)

I'm currently trying to wrap my neurons around printExpansion(), which 
is what I see getting called more often. I would have used PHP's call 
stack debugger if I could, but have to resort to browser output and 
file logging, so it's tough going (some sort of call graph for page 
generation would also be nice, since it is nigh on impossible to just 
use error_log() with all the built-in error handling mechanisms).

Thanks,

Rui Carmo
http://the.taoofmac.com