add_underlay: avoid adding the same underlay twice

[git.ikiwiki.info.git] / doc / plugins / editdiff / discussion.mdwn

I've enabled the plugin on an SVN-backed wiki, but am not seeing the Diff button when editing. (I do see the Rename and Remove buttons from having enabled those plugins.) Any ideas why it wouldn't be showing up? --[[schmonz]]

> It was broken, I've fixed it. --[[Joey]]

>> Awesome, thanks! --[[schmonz]]