Andrej Kastrin am Mittwoch, 14. Dezember 2005 08.54:
> Hi all
>
> I have a list of terms and I have to find out, if any one of them occur
> in my text. Example:
>
> term is e.g. ABCB1 wich is store in variable $w and my regular
> expression is "...if /^TI.*?\s$w\s/m..." .That way I successfully found
> ABCB1, but if the therm is parenthesize (e.g. (ABCB1)) then I can't find
> nothing.
>
> I modify above expression with "...if /^TI.*?.$w./m...", to match any
> character before and behind $w, but problem still persist.
>
> Any suggestion; thanks in advance.
The problem here is that '(' and ')' in regexes have special meaning and must
be "escaped".
The direct way:
my $w='\(ABCB1\)'; # done in $w itself
The generic way:
my $w='(ABCB1)';
/^TI.*?\s\Q$w\E\s/m; # done in the regex
For \Q and \E and all the chars with special meaning, see perldoc for:
perlre
perlretut
perlrequick
hth joe
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