From: Chet Ramey
Subject: Re: Commentary on: Bash Command Leads to ...
Date: Mon, 2 Feb 2026 09:22:50 -0500
>> Given that, I would like to point out that tcsh, to its credit, always
>> resets
>> the terminal
>> to "sane" before prompting for user input. This is a Good Thing and
>> something
>> that
>> (IMNSHO), bash should also do.
>Bash saves the tty state before each foreground command, and restores the
>saved tty settings if the command stops or terminates due to a signal.
>Otherwise, the shell has to provide a builtin that mimics some or all of
>`stty'.
I'm never quite sure what your posts mean, since you are, shall we
say, (more than) a bit laconic.
But for whatever it is worth, it is true that from time to time, I
find myself in bash having to blind-type "stty sane^j" because some
program has crashed out without fixing the terminal modes. This never
happens in tcsh.
I can't say for sure when/how this happens, but it does. In fact,
there is a program that I wrote (a long time ago) (and still use
today) that puts the terminal into no-echo mode and, of course, resets
the mode on a normal exit, but if it crashes out (which can happen),
sometimes, in bash, it leaves the echo off. I think when I wrote it,
two things were true:
1) I was trying to keep it as simple as possible, so did not
include the necessary signal handlers to ensure that the terminal
modes are always reset.
and
2) I was using tcsh at the time and since it handled it, I didn't
bother with the previous point.
>The OP's function defeats that.
I'm sure that is true.
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