A match operation will always return exactly as many values as there are captures, so /(...)(?:(...))*(...)/ will always return exactly three results on a match. When using the g modifier, the match operation will always return an exact multiple of the number of captures. You need a parser.

Here's a simple solution: 

while ($text =~ m/
   (APC[s]?)
   (
      \s \d{3}
      (?:
         (?: , \s \d{3} )*
         \s and \s \d{3}
      )?
   )
/xg) {
   my ($apc, $nums) = ($1, $2);
   my @nums = $nums =~ /(\d+)/g;
   push @extracts, $apc, @nums;
}

[download]

By the way, what's with pos($text) = 0 and the c switch? Removed!

Update: Added a solution.

In reply to Re: regexp match repetition breaks in Perl by ikegami
in thread regexp match repetition breaks in Perl by barkingdoggy

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