A look at terminal emulators, part 1 [LWN.net]

A look at terminal emulators, part 1

Posted Apr 3, 2018 21:30 UTC (Tue) by domo (guest, #14031)
In reply to: A look at terminal emulators, part 1 by anarcat
Parent article: A look at terminal emulators, part 1

so perhaps

my $count = ($str =~ tr/[\0-\010\012-\037]//);

i.e. all ascii codes below 32 except tab, to trigger confirm-paste.