If you need to match a string literal that contains regular expression metacharacters, you can make sure to get the escaping right using either quotemeta or the \Q ... \E delimiters, as described in Quote and Quote like Operators. A working example: 

my $regex = quotemeta q{document.write(this.location.href.replace(/\?r
+esultof.*$/i, ''));};
my $j =~ s/$regex/something else/;

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#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: matching a "regex" expression by kennethk
in thread matching a "regex" expression by slugger415

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