GNU bug report logs - #28799
25.3; Description of Character-Folding Omits Key Functionality

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Richard Wordingham <richard.wordingham <at> ntlworld.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.3; Description of Character-Folding Omits Key Functionality
Date: Thu, 12 Oct 2017 20:10:07 +0100

(I am advised by Eli Zaretskii that this deficiency in the
documentation should be dealt with by submitting a bug report using
"M-x report-emacs-bug RET".)

The EmacsWiki page https://www.emacswiki.org/emacs/CharacterFoldPlus
gives no indication of the important capability of character folding to
search for text in Unicode Normalisation Form D or Unicode
Normalisation Form C using a search string expressed in the opposite
normalisation.

Yours faithfully,

Richard Wordingham.

Message #8 received at 28799 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Richard Wordingham <richard.wordingham <at> ntlworld.com>
Cc: 28799 <at> debbugs.gnu.org, Drew Adams <drew.adams <at> oracle.com>
Subject: Re: bug#28799: 25.3; Description of Character-Folding Omits Key
 Functionality
Date: Mon, 15 Jul 2019 11:02:56 +0200

Richard Wordingham <richard.wordingham <at> ntlworld.com> writes:

> (I am advised by Eli Zaretskii that this deficiency in the
> documentation should be dealt with by submitting a bug report using
> "M-x report-emacs-bug RET".)
>
> The EmacsWiki page https://www.emacswiki.org/emacs/CharacterFoldPlus
> gives no indication of the important capability of character folding to
> search for text in Unicode Normalisation Form D or Unicode
> Normalisation Form C using a search string expressed in the opposite
> normalisation.

The Emacs Wiki isn't run by the Emacs maintainers, I think?  And this is
about a package not included in Emacs, but written by Drew Adams (who
also wrote that Wiki page), so I this he's the correct recipient here,
so I'm Cc-ing him and closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 28799 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>, Richard Wordingham
 <richard.wordingham <at> ntlworld.com>
Cc: 28799 <at> debbugs.gnu.org
Subject: RE: bug#28799: 25.3; Description of Character-Folding Omits Key
 Functionality
Date: Mon, 15 Jul 2019 06:50:32 -0700 (PDT)

> > (I am advised by Eli Zaretskii that this deficiency in the
> > documentation should be dealt with by submitting a bug report using
> > "M-x report-emacs-bug RET".)
> >
> > The EmacsWiki page https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__www.emacswiki.org_emacs_CharacterFoldPlus&d=DwIBAg&c=RoP1YumCXCgaWHvlZYR
> 8PZh8Bv7qIrMUB65eapI_JnE&r=kI3P6ljGv6CTHIKju0jqInF6AOwMCYRDQUmqX22rJ98&m=9hx
> c1orLDbgDi-
> 9ataMiWET1i2cn6mWUIW0QFSWYOHI&s=1P21cC1HQajCewgVwt20SrHcg8tnq1FEYitcxoxOXF4&
> e=
> > gives no indication of the important capability of character folding to
> > search for text in Unicode Normalisation Form D or Unicode
> > Normalisation Form C using a search string expressed in the opposite
> > normalisation.
> 
> The Emacs Wiki isn't run by the Emacs maintainers, I think?  And this is
> about a package not included in Emacs, but written by Drew Adams (who
> also wrote that Wiki page), so I this he's the correct recipient here,
> so I'm Cc-ing him and closing this bug report.

Yes, this page is about library character-fold+.el,
not vanilla Emacs (e.g. library character-fold.el).

The first thing in the Commentary of character-fold+.el
says this:

;;  NOTE: This library is NOT UP-TO-DATE WRT EMACS 25.  The vanilla
;;        Emacs library `character-fold.el', which this library
;;        extends, was changed in incompatible ways after this library
;;        was written.  I have not yet had a chance to update this
;;        (and am waiting for Emacs 25 to be released to do so).
;;        Sorry about that.

(And clearly the parenthetical phrase is also not up to date.)

Dunno if/when I'll get a chance to revisit what this library did.  It would be great if vanilla Emacs offered symmetric character folding (as a choice).

Message #16 received at 28799 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 28799 <at> debbugs.gnu.org,
 Richard Wordingham <richard.wordingham <at> ntlworld.com>
Subject: Re: bug#28799: 25.3; Description of Character-Folding Omits Key
 Functionality
Date: Tue, 16 Jul 2019 23:10:23 +0300

> It would be great if vanilla Emacs offered symmetric character folding
> (as a choice).

This is implemented in bug#35689.  But it still takes time to re-read
more than thousand old messages discussing this feature, so that
it will cover all needs expressed in previous discussions.

Message #19 received at 28799 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Juri Linkov <juri <at> linkov.net>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 28799 <at> debbugs.gnu.org,
 Richard Wordingham <richard.wordingham <at> ntlworld.com>
Subject: RE: bug#28799: 25.3; Description of Character-Folding Omits Key
 Functionality
Date: Tue, 16 Jul 2019 20:52:50 +0000 (UTC)

> > It would be great if vanilla Emacs offered symmetric character folding
> > (as a choice).
> 
> This is implemented in bug#35689.  But it still takes time to re-read
> more than thousand old messages discussing this feature, so that
> it will cover all needs expressed in previous discussions.

That's great.  You might want to take a look at
the behavior (UI, customization possibilities etc.)
provided in character-fold+.el.  Maybe your fix
could incorporate some of that, if helpful.

(Haven't looked at it.  Just suggesting you maybe
take a look, if you haven't already.)

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