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We need to allow the German umlauts for the user to enter as part of user name. While we add 

^[A-Za-z0-9äöüÄÖÜß-.]+(?:[._-][A-Za-z0-9äöüÄÖÜß-.]+)*$

This is not working as expected and we just get an error as "Facing Technical difficulty"

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1
  • Have you tried to encode umlets? So use ^[A-Za-z0-9äöüÄÖÜß-.]+...?
    – Marek Musielak
    Nov 14 '17 at 8:58
5

I think that your regular expression is not correct. "-" sign in regular expressions is used to match any from range of characters. e.g.: A-Z or a-z. You have range that is not closed: ß- I removed "-" sign and it started to work for me.

^[A-Za-z0-9äöüÄÖÜß.]+(?:[._-][A-Za-z0-9äöüÄÖÜß.]+)*$

Update following comment of @Marek Musielak. It seems that under -. @PVM have meant either . or - characters. In regular expression these characters should be escaped:

^[A-Za-z0-9äöüÄÖÜß\-\.]+(?:[._-][A-Za-z0-9äöüÄÖÜß\-\.]+)*$
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2
  • So there should be \` character before -, right? - should not be removed?
    – Marek Musielak
    Nov 14 '17 at 10:57
  • Yes, if @PVM wants to use '-' character then it should be escaped "\-". I was not sure, why this symbol was added, but it definitely causes issue
    – Anton
    Nov 14 '17 at 11:31
-2 
/^[ A-Za-z\-_.\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF.~\\-]*$/

Please try to use this one.

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-5

Try this one.

^[ A-Za-z\u00C0-\u017F.~\\-]*$
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1
  • 1
    Can you add some more details about what you fixed and how it works?
    – Dan Sinclair
    Apr 5 '19 at 13:32

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