Re^3:: Regex ERROR!

from the perlre man page

    \Q    quote (disable) pattern metacharacters till \E

look at this code:

$comm = '(xyz';
$line = '123(xyz)456';

if ($line =~ /$comm/) {     #error! same as  $line =~ /(xyz/  which ha
+s an unmatched '('
 # do stuff
}
if ($line =~ /\Q$comm/) {   #no error! same as  $line =~ /\(xyz/  -- '
+(' is escaped
 # do stuff
}
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flounder

Comment on Re^3:: Regex ERROR! Download Code

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Re: Re^3:: Regex ERROR!
by nofernandes (Beadle) on Jul 15, 2003 at 13:51 UTC

Ok.. i get it!! Thank you very much!

[reply]

Re: Re^3:: Regex ERROR!
by PodMaster (Abbot) on Jul 16, 2003 at 09:17 UTC

`perldoc perlop

\Q          quote non-word characters till \E

$a = "\Qhello! there? How> what< now%";
die $a;
__END__
hello\!\ there\?\ How\>\ what\<\ now\% at - line 2.
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MJD says "you can't just make shit up and expect the computer to know what you mean, retardo!"
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