Re^2: Regular expressions and sort

[zaro]

Thanks, your solution seems better. I will use it :-).
But it still doesn't explain the strange behaviour of m//.

[Fletch]

No, because perldoc perlre explains that:

The numbered variables ($1, $2, $3, etc.) and the related punctuation set ($+, $&, $`, $', and $^N) are all dynamically scoped until the end of the enclosing block or until the next successful match, whichever comes first. (See "Compound Statements" in perlsyn.)