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Re: lread.c's `values' variable

From: Kim F. Storm
Subject: Re: lread.c's `values' variable
Date: 05 Nov 2002 01:08:28 +0100
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50

Richard Stallman <address@hidden> writes:

>     Yes, it uses (car values).
> values is supposed to provide a history that you can look at whenever
> you wish.

Has anyone ever needed to look at that list?

Isn't the information typically found in the *Messages* buffer, in the
command history, or in the buffer where you evalled the expression
(e.g. *scratch*).

>  It's not just meant for the functions that look at it.

It is quite obvious that functions can only really look at the car of
that list.  So it is really _never_ for functions to look at (as a list).

>     However, that doesn't explain why `values' needs to be a list of all
>     expressions "which were read, evaluated and printed".  Since it grows
>     without ever being truncated, it is a memory leak IMO.
> It probably is not a significant leak, but if it is, we could make GC
> truncate it to a certain length.

If we keep it as a list, I think that is a reasonable compromise.

Kim F. Storm <address@hidden> http://www.cua.dk

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