$line =~ m/\s+([a-zA-Z0-9])$/;

The char class needs to be quantified:

$line =~ m/\s+([a-zA-Z0-9]+)$/;

or

$line =~ m/\s(\w+)$/;

For the second problem (or better for both) use split.

(Update: added more newlines)

Perl 6 in German

In reply to Re: Two regex problems (easy) by moritz
in thread Two regex problems (easy) by Anonymous Monk

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