There's no need for the /e mofier. 
my $string = "aDescriptor.Type = {\@see Star.Awt.Win#TOP}";
$string =~ s/{\@see\s+((\w+\.)+)(\w+)#(\w+)}/<idl package="\L$1\E" nam
+e="$3" anker="$4" \/>/g;

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holli, /regexed monk/

In reply to Re^2: Regexp matched part to lower case by holli
in thread Regexp matched part to lower case by tomson

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