You could supply an alternative definition for getStringReadFromStdin. Eg 
{
    no warnings 'redefine';
    local *{main::get_input} = sub { "yes" };
    get_answers();
}

sub get_answers {
    print "Is this right?";
    return get_input();
}

sub get_input { <> }

[download]

The bare block at the top redefines get_input so that it returns 'yes', rather than input from STDIN. The redefinition is local to the block.

In reply to Re: How do I automatically feed multiple yes'es into a subroutine that waits on reads from STDIN? by FunkyMonk
in thread How do I automatically feed multiple yes'es into a subroutine that waits on reads from STDIN? by seank

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