diagramming extension for medawiki

[Angus Salkeld]

Can we have a diagramming extension for mediawiki?

Esp. nice when approaching summit and people want to collaborate on diagrams.

Here is one that looks nice:
http://blockdiag.com/en/blockdiag/examples.html
http://blockdiag.com/en/blockdiag/embed_diagram.html#embed-in-mediawiki

[Ryan Lane (rlane)]

Let me do a quick look for reasonable extensions, as well as a code review on this block diagram one.

[Ryan Lane (rlane)]

blockdiag looks safe. It writes tag contents to a file, then runs blockdiag against it. blockdiag doesn't have directives that shell out, write anywhere, or read from anywhere. The MW extension shells out, but none of the parameters are based on user content. It's written for a really old version of MW. It may be necessary to update the code and upstream it, but I'll try it out to see.