GNU bug report logs - #29400
26.0; Add Elisp manual index entry for `defvar' to node `Compiler Errors'

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Drew Adams <drew.adams <at> oracle.com>
Subject: bug#29400: closed (Re: bug#29400: 26.0; Add Elisp manual index
 entry for `defvar' to node `Compiler Errors')
Date: Fri, 24 Nov 2017 14:44:02 +0000

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Your bug report

#29400: 26.0; Add Elisp manual index entry for `defvar' to node `Compiler Errors'

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 29400 <at> debbugs.gnu.org.

-- 
29400: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29400
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 29400-done <at> debbugs.gnu.org
Subject: Re: bug#29400: 26.0;
 Add Elisp manual index entry for `defvar' to node `Compiler Errors'
Date: Fri, 24 Nov 2017 16:42:39 +0200

> Date: Wed, 22 Nov 2017 08:50:33 -0800 (PST)
> From: Drew Adams <drew.adams <at> oracle.com>
> 
> Node `Compiler Errors' seems to be the only place in the Elisp manual
> where we tell users that you can use a vacuous `defvar' (no value) to
> suppress a byte-compiler warning about it not being defined.
> 
> But this node has no index entry - at least none that has the word
> `defvar' in it.  Please add such an entry.

I added some index entries, but I don't understand why you wanted an
index entry with "defvar" in it.  A reader who will look for "defvar"
when they want to find ways of suppressing compiler warnings already
knows that defvar is used for that purpose, so why would they use such
a topic at Info-index's prompt?  That's the opposite of what good
index entries should provide -- they should _lead_ to defvar's
description as the way to suppress warnings when the reader thinks of
"warnings" or some such.

> And please either add the same info (about this use of a vacuous
> `defvar') to node `Defining Variables' or add a cross-reference from
> that node to node `Compiler Errors'.

Done.

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From: Drew Adams <drew.adams <at> oracle.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.0; Add Elisp manual index entry for `defvar' to node `Compiler
 Errors'
Date: Wed, 22 Nov 2017 08:50:33 -0800 (PST)

Node `Compiler Errors' seems to be the only place in the Elisp manual
where we tell users that you can use a vacuous `defvar' (no value) to
suppress a byte-compiler warning about it not being defined.

But this node has no index entry - at least none that has the word
`defvar' in it.  Please add such an entry.

And please either add the same info (about this use of a vacuous
`defvar') to node `Defining Variables' or add a cross-reference from
that node to node `Compiler Errors'.

As it is now, it is not so easy to find this info.



In GNU Emacs 26.0.90 (build 3, x86_64-w64-mingw32)
 of 2017-10-13
Repository revision: 906224eba147bdfc0514090064e8e8f53160f1d4
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --without-dbus --host=x86_64-w64-mingw32
 --without-compress-install 'CFLAGS=-O2 -static -g3''

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