regex substitution using $1

[charles]

i have:

my $version = '$Revision: 1.47 $';
$rcs =~ s/[^\d.]+//;

looking at the regex match, i would think this should match all
non-numeric and \. characters. however, the value of $rcs ends up as:

1.47 $

i am not sure why the \s and \$ after the numbers are not being wiped out.

thanks -c


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