Hi

foreach ($2..$3) {$breakpoint{$1}{$_}=1;}

Thats the loop var of the foreach.

In this case the regex matches 2 and 3 from the previous line.

If you wanna get rid of it, try:

for my $m ($2..$3) {$breakpoint{$1}{$m}=1;} *

As a side note: Your declaration of $line looks weird, why not directly inside the while condition?

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

Update

*) From perlsyn

The foreach keyword is actually a synonym for the for keyword, so you can use either. If VAR is omitted, $_ is set to each value.

In reply to Re: (Perl 5.10.1 or before)What does $_ refer to here? by LanX
in thread (Perl 5.10.1 or before)What does $_ refer to here? by hghosh

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