$> generate_perl_completion_script command_name switch switch ...
The resulting script is output on STDOUT. The script will also output the <B>completeB>
command on STDERR.
The first argument is taken as the command name, the rest of the arguments as switches to create
completion for. The arguments are taken from the command line and STDIN; this lets you create
completion script like this
$> generate_perl_completion_script command option < options_file > my_script.pl
<B>options_fileB> contains an option perl line, without dashes.
$> generate_perl_completion_script command < command_and_options_file > my_scritp.pl
<B>command_and_options_fileB> first line is the command the rest is options, one perl line, without dashes.