Topic on Extension talk:CodeMirror

I tried on multiple articles, it has no effect at all.

It does work on fr.wiki, zh.wiki.

It doesn't seem to be working on pt.wiki, but it works perfectly on fr.wiki for me.

I see it working on both en and pt.wiki. I've got some questions, to see if we can figure out what's going on.

Can you check to make sure that you've turned it on in the preferences? You have to set it on each wiki, it doesn't automatically turn on everywhere.

In source editing mode, do you see the highlighter button at the top of the edit window?

Do you have any gadgets on en.wiki (or pt.wiki) that you're not using on fr.wiki or zh.wiki?

Also: what kind of computer/browser are you using?

WikEdDiff was preventing it from working. As soon as I turned it off, the highlighting started to work properly. Thank you very much for your help!

See also w:en:User talk:Cacycle/wikEd#Incompatible script, gadget, or addon: Code Editor

Oh, good! I'm glad we figured it out.

I can confirm WikEdDiff is the gadget that blocks me as well. Which is kinda weird since it has nothing to do with editor.

I guess the author re-uses some code in his WikiEd (which I didn't use) that causes this.