Hi, Bob, :)
Thanks for the detailed response! I figured I was on the right path,
but confirmation greatly appreciated. :)
On Mon, 17 Sep 2001, Bob Showalter wrote:
> Now, can you tell why '~' is matched by
>
> /(?:^|[^~])~$/
Because the '(?:re1|re2)' is a zero-length, non-capturing anchor that
matches either '^' (beginning of string), or '[^~]', which indicates
any character other than tilde. If I understand aright, this pattern
would match "a", "a~" or "aa~" but not "a~~". That sound right?
---Jason
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