In the "perverse" category: 

use strict;
use warnings;
my @aap = qw( 0aap 0noot 1mies 2mies 0aap 0noot 1mies 6mies );
for (@aap) {
  print "$_\n" if - reverse '0' . (/^1(.*)/ .. /^0(.*)/);
}
__END__
1mies
2mies
1mies
6mies

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I wonder what's more common, the situation described by the OP or the need to know the sequence number of the match? If the former is more common, then I think one could make the case for having the match of the right operand return a string of the form '0En' instead of the current 'nE0'. Then, all that would be required to satisfy the OP's request would be to prepend 0+, or better yet, a minus sign, in front of the .. expression: 
if ( -(/^1(.*)/../^0(.*)/) )

[download]
whereas if one wanted to keep the line matching the right operand one would omit the 0+ or minus sign: 
if ( (/^1(.*)/../^0(.*)/) )

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Those who actually wanted the match number, would have to scrape it off the return value: 
if ( ( /^1(.*)/../^0(.*)/ ) =~ /(\d+)$/ ) {
  # $1 contains the sequence number of match

[download]
I've tested this scheme a bit, and it seems to work; please let me know if I missed some corner (or not-so-corner) cases.

the lowliest monk

In reply to Re^2: .. operator and not including the condition of right operand by tlm
in thread .. operator and not including the condition of right operand by eXile

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