Thanks, that example of using code in a regex is exactly what I was wondering.

The perlre page states that (?{ code }) is always successful, but also says that it may be used in a conditional match.

So I'm guessing that if used alone, the code has side-effects only and always succeeds. But if used as the condition of a (?(condition)yes-pattern[|no-pattern]), then it does indeed use the result as the condition.

In reply to Re: Re: conditional match in regex by John M. Dlugosz
in thread conditional match in regex by John M. Dlugosz

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