[MacPerl] [Q] use of $1, $2...

[Nobumi Iyanaga <n-iyanag@ppp.bekkoame.or.jp>]

Hello,

I have a script like this:

$_ = " abcde. egi";

if (/^(.+\.)([^\.]*)/) {
	$a = $1;
	$a =~ s/ //;
	$b = $2;
}

print "a = $a, b = $b\n";

When I run this script, the result is:

a = abcde., b =

But if I comment out the line "$a =~ s/ //;", I get the expected result:

a =  abcde., b =  egi

Must I think that something is changed in $2 when I remove the space in $a??

Thank you in advance for any explanation.

Nobumi Iyanaga
Tokyo,
Japan



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