From: Sebastian Hungerecker <sepp2k@...>
Date: 2007-10-01T01:56:57+09:00
Subject: Re: Regular Expression newbie question about upper & lower case

Peter Vanderhaden wrote:
> I want to check for both upper & lower case answers when a user keys in
> a response to a question, but I haven't been able to find an example of
> the syntax.  What I'm looking for is something like this:
>
>     If $ans = [Yy]*
>
> I know this syntax isn't correct, but what I want it to do is accept Y,
> y, yes, YeS, yippee, etc.  Would someone mind posting an example?
> Thanks....

If you only care whether the first character is a y you can just do
if ans =~ /^y/i   #(match beginning of the line followed by a y,
                  # ignoring case)
or
if ans[0,1].lowercase == "y"

If you just want y, yes, yippee, yeah and yo, but you don't want "you suck" or 
yodeling, you could use this:
if ans =~ /^y$|yes|yippee|yeah|yo/i


HTH,
Sebastian
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