Terminal messed up after exiting bash

[Jan Rome]

Hello,

I'd like to report an obscure bug I came across in pfsense which runs on 
top of FreeBSD.

If I run a bash script in which I have

read -r -n1 -p "prompt: "

and instead of providing input, i ctrl-c the script,

the ash shell doesn't recover the terminal properly; backspace echos ^? 
and the only way to delete characters is to hold shift and press 
backspace. Also,  if I use the -s switch for the read command in the 
bash script, the problem gets even worse with the cursor not moving 
anymore as I type and the text I type not being visible at all.

A solution was provided by pgas from #bash on irc.freenode.net, where I 
solve this by trapping the ctrl-c signal and do 'stty cooked' before 
exiting, which seems to give expected behaviour.

Best regards,

Jan