Use of uninitialized value in pattern match (m//)

wolis has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks,

I have search PerlMonks and found questions and answers on all things Use of uninitialized value.. but none refer to pattern matching.

Now this warning logically makes sence, I have not initialise a variable in my regex.

then you look at the if regex it complained about:

if($tmp2 =~ m/\'/) {
   $tmp2 =~ s/\'/\\\'/g; # escape the single quotes..
}
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How can I initialise the single quote? Should I be definding a var and using that in my regex? is this important?

Thanks,

 ___
/\__\ "What is the world coming to?"
\/__/ www.wolispace.com
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