The Perl debugger and ReadLine

The documentation in perldebug says in part:

As shipped, the only command-line history supplied is a simplistic one that checks for leading exclamation points. However, if you install the Term::ReadKey and Term::ReadLine modules from CPAN, you will have full editing capabilities much like GNU readline(3) provides. Look for these in the modules/by-module/Term directory on CPAN. These do not support normal vi command-line editing, however.

This isn't strictly correct; installing Term::ReadKey and Term::ReadLine gives you precisely jack when it comes to readline functionality. Running across this post on Perlmonks gave me what I needed--all I needed to do was install Term::Readline::Perl and I was off and running. Much virtual beer goes to monsignor Rincewind [wikipedia]!