regular expression exceptions

[L4DD13]

Hi,

I have regular expression searching for all strings that are structure like this: {string}.

What I would like is to be able to make 'exceptions'. For example, I want it to essentially ignore string that have certain words within them, like {form-string}, {ignore-string}, etc.

This is my current expression,

/(\{[a-z\-]+\})/ 

How can it be modified to suit my needs?

Thanks,
Michael.

[Salathe]

You could use a lookahead to see if the token is one of the exceptions, though this will quickly get out of hand with lots of exceptions.

/{(?!(?:form-string|ignore-string)})[a-z-]+}/

Depending on what precisely you are doing, it may be simpler, faster and/or easier to use some other method (which is difficult to guess without more info.).

[L4DD13]

Thanks, but i've changed my approach to the problem.

Thanks for your help.