bug#69819: 30.0.50; comint-mode does not always respect the read-only flag

[Dima Kogan]

> Why do you think C-d shouldn't work when the buffer is read-only?
>
>> I'm observing this with all comint-based modes, not just shell-mode.
>
> It's a feature, AFAICT.  But I'm interested in hearing why you thought
> it was a bug.


Is there no expectation that a "read-only" mode would block any changes
to a buffer? Killing the inferior process breaks that expectation, hence
this report.

That said, I've been a daily user of shell-mode for something like 25
years, and encountered it for the first time just recently, so fixing
this surely isn't very high priority. But still.

Thanks!