in reply to Re: A NOT in regular expressions
in thread A NOT in regular expressions

You get the string "<%replace here%%>but not here%>" wrong.

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Re: A NOT in regular expressions
by Abigail-II (Bishop) on May 14, 2003 at 08:49 UTC
    You are quite right. I should have written: 
    s/<%(?:[^%]+|%(?!>))*%>/<%$new%>/

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    Abigail

[reply]
[d/l]
      Ilya saved you.

      In older versions of Perl, or in other languages, the above would perform simply pathetically on something like: 

      "<%aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+aaaaaaaaaaaaaa"

      [download]
      However Ilya's optimizations make it perform just fine in recent versions of Perl. :-)
[reply]
[d/l]
        Yeah, too bad older versions of Perl don't have (?>).

        Abigail

[reply]
[d/l]

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