Devel::REPL::Plugin::Turtles - Generic command creation using a read hook
By default, this plugin allows calling commands using a read hook to detect a default_command_prefix followed by the command name, say MYCMD as an example. The actual routine to call for the command is constructed by looking for subs named 'command_MYCMD' or 'expr_MYCMD' and executing them.
qr/\#/ so care must be taken if other uses for that character are needed (e.g.,
'#' for the shell escape character in the PDL shell.