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in reply to ultimate date check regexp

Yes there is, just use the output of the script. true for all valid dates from 1900 .. 2100. I use it in all my scripts!
use Regexp::Assemble; use Date::Calc; my $re = Regexp::Assemble->new; for my $y ( 1900 .. 2100 ) { for my $m ( 1 .. 12 ) { for my $d ( 1 .. 31 ) { if ( Date::Calc::check_date( $y, $m, $d ) ) { $re->add( sprintf( "^%4d.%02d\.%02d\$", $y, $m, $d ) ); } } } } print $re;
Boris