Hi --
I'm sure the last thing you would want your client to do is lear regular expressions and how to write them. I have a scenario where I need to filter results retireved from my program. The results can contain letters, numbers, or both. The problem is that he needs to filter them using ranges, exact matches, etc. Obviously regular expressions can do this.
Here is my main problem: He needs to do 15-90. You can't do 15-90 in a regular expression.
Do you mean matching any integer from 15-90? If so, you could use something like:
/\b(?:1[5-9])|(?:[2-8][0-9])|90\b/
But I can understand that you don't expect your client to come up with
that 
Basically I need an alternative to regular expressions that my client can understand, but still gives him the ability to do some complex comparisons.
Any ideas?
There was a library called Regexp::English, by Florian Gross, though I can't find it any more. I'm not sure whether it would help, though.... It gives you an English-language way to build patterns, but you still have to know what you're building.
I suspect you might be best off creating some kind of little wrapper language yourself.
David