It's actually kills even w/o Expect. Code below is killed with ^c too: 
require Expect;
use strict;
$SIG{'INT'}=sub {print "Al Bundy rules!\n";};
sleep 10000;

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The prcess lasts until 1st ^c.

In reply to Re: INT signal kills process run with expect, when $SIG{'INT'} is set by ISAI student
in thread INT signal kills process run with expect, when $SIG{'INT'} is set by ISAI student

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