No, I think you did exactly the right thing. The editor (and me, for messing up the fix to the editor) is to blame. You should now be able to copy and paste all you like.
]]>I must have accidentally removed the WMD patch when I implemented the live math preview (so that the input box doesn't crawl). I'll fix it now. Edit: it should auto-encode funny characters again now.
]]>In the case of Dave's question, I just changed the Č to a C (which is the canonical name for that Wikipedia page anyway). If there were some URL that really required you to have a Č, I think you'd have to percent encode the character, like this: http://en.wikipedia.org/wiki/Stone-%C4%8Cech_compactification. The computer I'm using right now seems to automatically percent encode when I copy and paste URLs.
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