Re: Make a variable safe for a regex.

You want \Q and \E as indicated on perlre. They're perhaps a little obscure and arcane, but powerful and awesome.

$Title =~ s,^\Q$Artist\E\s*-\s*,,ig;
[download]

-Paul

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Re^2: Make a variable safe for a regex. by exodist (Monk) on Feb 25, 2007 at 22:27 UTC
\Q and \E worked, thanks a lot!	[reply]
Re^2: Make a variable safe for a regex. by Sixtease (Friar) on Feb 28, 2007 at 22:15 UTC
Is there a way to do this for UTF-8 strings too? \Q will break multi-byte characters.	[reply]
Re^3: Make a variable safe for a regex. by Corion (Patriarch) on Mar 03, 2007 at 18:53 UTC
Can you supply a test case for that? I've tried (shortly) and it seems to work for me: `C:\>perl -le "my $str = qq(foo\x{100}bar); my $re = qr/^\Q$str\E/; war +n $str; warn $re; warn $str =~ /$re/;" foo─Įbar at -e line 1. (?-xism:^foo─Įbar) at -e line 1. 1 at -e line 1.` [download] Maybe it fails for some other cases of unicode chars, and if so I'd consider that a bug.	[reply] [d/l]