Try as I might, I can't get a RegEx to exclude space or single quotes.

• The string abc is allowed


• Not allowed: a'bc, ', 'abc, ''', abc'' etc


• Spaces could replace the ' too in the above example


• Trailing and leading spaces are assumed to be removed already


• Empty strings are checked elsewhere


• Target language is javascript

I'd use PATINDEX if I was in SQL.

Or NOT a positive match on either space or single quote, if I could negate...

I've tried (for single quote only)

• w*[^']w*


• ^w*[^']w*$


• others I forget now

Please put me out of my misery so I can sleep tonight.

Edit:

• Target string will not be surrounded by Quotes. I thought thy might add clarity


• If Target language is javascript is wrong, then it's c#. I'd have to check where we do the validation exactly: client javascript or server c#