User blog comment:Daniel Baran/Search Developments: Big Picture/@comment-188432-20120512125751/@comment-3335785-20120515083532

I imagine there's a list out there of which ones are made up of '2 characters' and those which are just one, but not knowing what the correct term is for this quirk of the internet I'm unsure what to look for. For me it's a case of trial and error through looking each individual character up through Inspect Element.

You say ł works? It displays as %C%%81 if it's part of a link in inspect element. Perhaps there is a workaround after all. c/p has failed me :(