Last link above appears miscoded; 404.

Intended target:
http://www.perlmonks.com/index.pl?node_id=551676#what_if_i_don_t_decode
or, in another form: ?node_id=551676#what_if_i_don_t_decode

It appears that the form
[href://551676#what_if_i_don_t_decode|What if I don't decode?]
was used in Re: How does the built-in function length work?. It fails because of the missing questionmark after the node number.