From: "Ulrich Müller" <ulm@gentoo.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, 73886-done@debbugs.gnu.org
Subject: bug#73886: 29.4; Confusing info about void function cells in Emacs Lisp manual
Date: Sun, 27 Oct 2024 14:40:36 +0100 [thread overview]
Message-ID: <uiktdackr@gentoo.org> (raw)
In-Reply-To: <864j4xaj6l.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 27 Oct 2024 13:17:54 +0200")
>>>>> On Sun, 27 Oct 2024, Eli Zaretskii wrote:
> Thanks, I've now updated the documentation, and I'm closing this bug.
TBH, I find the new wording still confusing: "It is impossible to
distinguish between a function cell that is void and one set to nil."
After commit eadf1faa3cb5eea8c25a5166a9a97ebd63525c56 there are no void
function cells any more. They start out as nil and they always contain
a lisp object. So, differentiating between nil and void in the manual
seems a little artificial.
Also, there is the following paragraph in symbols.texi which probably
should be updated (regardless of what I said above):
| The function cell or the value cell may be @dfn{void}, which means
| that the cell does not reference any object. (This is not the same
| thing as holding the symbol @code{void}, nor the same as holding the
| symbol @code{nil}.) Examining a function or value cell that is void
| results in an error, such as @samp{Symbol's value as variable is void}.
next prev parent reply other threads:[~2024-10-27 13:40 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-19 14:37 bug#73886: 29.4; Confusing info about void function cells in Emacs Lisp manual Ulrich Müller
2024-10-19 17:45 ` Eli Zaretskii
2024-10-20 2:12 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-10-20 5:18 ` Eli Zaretskii
2024-10-20 16:56 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-10-27 11:17 ` Eli Zaretskii
2024-10-27 13:40 ` Ulrich Müller [this message]
2024-10-27 14:08 ` Eli Zaretskii
2024-10-27 14:59 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-10-27 16:50 ` Eli Zaretskii
2024-10-27 17:10 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-10-27 17:20 ` Eli Zaretskii
2024-10-27 18:53 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-10-19 19:08 ` Andreas Schwab
2024-10-19 21:07 ` Ulrich Müller
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