The reason is because "|" is a regex metacharacter. Do:

$opt{c} = quotemeta $opt{c};
[download]

instead, before you use it in a regex.

_____________________________________________________
Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;