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If you try to enter a internationalized domain name as your "website" in your profile, it will be silently stripped of any non-English characters.

Ex: My webiste is http://linus.unnebä but when I try to enter that it saves it as when it actually should display linus.unnebä and link to (or just link with the ä, don't now what is the right thing to do).

As I wrote this post I also noticed that the markup ends the link at the first non-English character aswell, look at the example above.

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With markup I mean the form where you write your posts, or actually the backend which converts the things I type to (x)html. – Linus Unnebäck Mar 9 '10 at 16:56
We detected an invalid domain linked in your post. This is likely caused due to sample code not being in a code block. (this message will be automatically removed when the link is fixed) – Community May 14 '12 at 5:24
working on fix for the invalid detection here – waffles May 14 '12 at 7:02
up vote 17 down vote accepted

When John Smithers edited this post, I noticed that it works if you escape the unicode character. So http://linus.unnebä actually works. The markdown source for this is http://linus.unnebä It's still just a workaround, but better than those xn--bla-xyz things.

Since SO takes a whitelisting approach to characters in links, I suspect there won't be a change anytime soon; especially since Jeff is notorious for talking about "crazy moon language" for umlauts et al. But I agree it would be nice.

Epilogue: Seven weeks after I wrote this, Jeff hired me – and it only took me a little over five years to make good on the "it would be nice" thing. And umlauts and ASCII characters lived together in harmony and happily ever after.

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Jeff is a bit too anglo-centric for my liking sometimes. After all, he's running an international community. On the other hand, IDNs arguably add a layer of horrible chaos to what used to be a half-way straightforward system. I think we would have been better off without them. – Pëkka Mar 9 '10 at 18:51
"Jeff is a bit too anglo-centric for my liking sometimes" - I18n is an incredibly complex thing to get right, especially for the first few releases of a project, even more so if you've never done it before. Some projects have a person just dedicated to I18n! I don't think it's fair to blame Jeff for this. (P.S. Germans are also anglo, as in anglo-saxon) – Mark Henderson Mar 9 '10 at 20:52
I don't understand your crazy moon languages!! But then, I barely understand English, or as we like to call it, "American". – Jeff Atwood Mar 9 '10 at 23:56
Surprised to see that this actually works in my profile. Wouldn't that allow for url-obfuscation of some kind? – Linus Unnebäck Mar 10 '10 at 18:58
We detected an invalid link in your post, please correct it. (this message will be automatically removed when the link is fixed) – Community May 14 '12 at 5:24
working on fix for the invalid detection – waffles May 14 '12 at 7:02
It'd be nice if this were fixed for Japanese.SE. A user wanted to link to 国語文法.com and had no idea how. I was able to work around it for now by escaping, but... – snailplane May 15 '15 at 15:01
Awesome epilogue! Thanks for taking the time and adding it :) – Linus Unnebäck Jul 5 '15 at 16:23

As balpha notes, there is a workaround -- use the encoded version of the crazy moon language characters:


This is fairly standard for oddball URL characters since we have a strict whitelist.

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