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Re: Multiple M-x shells sharing input ring
From: |
Michael Heerdegen |
Subject: |
Re: Multiple M-x shells sharing input ring |
Date: |
Thu, 04 Sep 2014 22:40:48 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) |
Drew Adams <drew.adams@oracle.com> writes:
> Too bad that `comint-input-ring' is "permanent local".
> Should it be, or is that a bug?
The variable is made local in the comint code with
`make-local-variable'.
Since very different modes are based on comint, making such vars
permanently local seems ok in this case. You probably don't want to
share an input history between a shell and a scheme buffer. Using a
global variable is not a good idea here.
> It does not sound to me like `comint-input-ring' fits that description
> at all.
>
> Anyway, presumably you could remove its permanent-local status, by
> removing property `permanent-local' from symbol `comint-input-ring'.
>
> Then you should be able to use `kill-local-variable', to have all
> comint buffers share the same variable (value). (Dunno whether that
> is what is what Joseph wants.)
It's not that easy, since `comint-mode' does a lot of explicit
`make-local-variable' calls including for `comint-input-ring'.
Michael.