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Re: Using /m when $ is followed by punctuation

by ikegami (Pope)
on Aug 05, 2014 at 22:40 UTC ( #1096367=note: print w/replies, xml ) Need Help??

in reply to Using /m when $ is followed by punctuation

Drop the useless $.
/ $ \n /xm
is the same as just
/ \n /xm

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Re^2: Using /m when $ is followed by punctuation
by jrw (Scribe) on Aug 05, 2014 at 22:46 UTC
    Thanks, I see that now. Do you know of an answer to the general question: how to get perl to parse $ followed by by an escape sequence as $ \whatever rather than $\ whatever?

      I don't think you'd ever need to do that, but I can think of a couple of solutions:

      • (?x: $ )
      • (?=\n|\z) (if /m is in effect)
      • (?=\n?\z) (if /m isn't in effect)
      • (?![^\n]) (if /m isn't in effect)
        Thanks, ikegami. I had remembered that there seemed to be no need for an interior $ followed by an escape, but I failed to think outside the box I had constructed for myself in the original question.

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