Maybe, maybe not. I think it's overkill, but your proposal is too simple. It might cause false matches if there were a 'www.swf.com' (or even 'www.swfa.com')

I'd probably use something like:

m/[.]swf(?:$|[?])/i

if we're not capturing, there's no reason to need '.*' to get the rest of the line, so a simple alternate (end of line, or a question mark), will work just fine.

It's almost as few characters to use the following, and there would hopefully be less confusion about what it's doing for novices:

m/\.swf$|\.swf\?/i

In reply to Re^2: questions of a perl beginner on regex by jhourcle
in thread questions of a perl beginner on regex by jithoosin

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