Thread:Talk:MediaWiki/SemanticForms: Exclude special characters in forminput

Hey,

I've got a question concerning #forminput and would be pleased, if you could help me:

I want to exclude special characters like "@" or "ä" from new form pages. Currently, I'm using #forminput (two-step-process) to enter a page name and create or edit the page. So, I avoid that an existing page will be overwrote. From the input form field ({{{field...) I know that it is possible to define regular expressions inside them. This works fine. Is it possible to use regular expressions in combination with #forminput as well? Or can you recommend other solutions to exclude special characters inside #forminput?

Thank you very much in advanc!.

BR AArnold