For using IO::Prompt, PBP (chp. 17, p. 399) mentions using the -line option/flag for the prompt function. Here's a contrived example: 
#!/usr/bin/perl

use strict;
use warnings;

use IO::Prompt;

my $resp = prompt -line, "Eh?: ";
print "You said: ${resp}And here's a new line.\n";

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But I'd expect perl to at least warn me about that "-line" in there. It's got no quotes around it, and it's not in front of a fat comma, so, doesn't that make it a bareword? Shouldn't I be getting a warning about it?

In reply to Why doesn't Perl warn me about this bareword? (IO::Prompt prompt -line) by j3

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