As other people have noted, a subsequent successful match resets the captured values. However, this doesn't have to create a problem; you can use the list behavior of captures in a regex to save them for reuse. 

#!/usr/bin/perl -w
use strict;

my $line="One two three four five";
my @chunks;
if(@chunks = $line =~ m/(one)\s(two)\s(three)\s(four)\s(five)/i){
    $chunks[0] =~ s/One/ONE/;   # Change the first chunk
    $chunks[1] =~ s/two/tWo/;   # Change the second chunk
    # ...
}
print "@chunks\n";

[download]

Output: 

ONE tWo three four five

[download]

--
"Language shapes the way we think, and determines what we can think about."
-- B. L. Whorf

In reply to Re: Regexp and substitution question by oko1
in thread Regexp and substitution question by bdalzell

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