Find all the name and alias corresponding to a codepoint in Emacs.

Find all the name and alias corresponding to a codepoint in Emacs.

[Hongyi Zhao]

Say, for back-tick or grave accent ( ` ) symbol, I want to let Emacs
give me all of its  name and alias, but the `M-x describe-char ` can
only give the following information:

  name: GRAVE ACCENT
  old-name: SPACING GRAVE

So, I want to know if it's possible to find all the name and alias
corresponding to a codepoint in Emacs.

Regards
-- 
Assoc. Prof. Hongsheng Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Emanuel Berg via Users list for the GNU Emacs text editor]

Hongyi Zhao wrote:

> Say, for back-tick or grave accent ( ` ) symbol, I want to
> let Emacs give me all of its name and alias, but the `M-x
> describe-char ` can only give the following information:
>
>   name: GRAVE ACCENT
>   old-name: SPACING GRAVE

I'd say use `backquote' in Lisp settings (indeed, even an
Elisp function) ... for everything else, use the (new) name.

> So, I want to know if it's possible to find all the name and
> alias corresponding to a codepoint in Emacs.

Uhm, what other aliases would that be? And if any, where are
they stored in Emacs?

BTW, check this out:

;; -*- lexical-binding: t -*-
;;
;; this file:
;;   https://dataswamp.org/~incal/emacs-init/char.el

(defun what-char (&optional pos)
  (interactive "P")
  (let*((position (or (and (numberp pos) pos)
                      (point) ))
        (kill pos)
        (char (char-after position)) )
    (when char
      (let*((name     (get-char-code-property char 'name))
            (old-name (get-char-code-property char 'old-name))
            (msg (if (and name old-name)
                     (format "%s (old: %s)" name old-name)
                   (or name old-name) ))
            (msg-dc (when (stringp msg) (downcase msg))) )
        (when msg-dc
          (prog1 msg-dc
            (when kill (kill-new msg-dc))
            (message "%s (at point: %d)" msg-dc position) ))))))

;; (what-char)                  ; "space"
;; (what-char 754)              ; "right parenthesis (old: closing parenthesis)"
;; C-u 754 M-x what-char RET    ; same, but also killed
;; C-u M-x what-char RET* (C-y) ; asterisk is yanked
;; M-x what-char RET            ; line feed (lf) (at point: 1034)


-- 
underground experts united
https://dataswamp.org/~incal

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Eli Zaretskii]

> From: Hongyi Zhao <hongyi.zhao@gmail.com>
> Date: Sat, 12 Mar 2022 10:54:49 +0800
> 
> Say, for back-tick or grave accent ( ` ) symbol, I want to let Emacs
> give me all of its  name and alias, but the `M-x describe-char ` can
> only give the following information:
> 
>   name: GRAVE ACCENT
>   old-name: SPACING GRAVE
> 
> So, I want to know if it's possible to find all the name and alias
> corresponding to a codepoint in Emacs.

Right next to the "Character code properties:" heading in the buffer
shown by describe-char, there's a button whose title is "customize
what to show".  If you click it or press RET on it, you will be shown
a buffer where you customize what character properties to display.

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Hongyi Zhao]

[-- Attachment #1: Type: text/plain, Size: 878 bytes --]

On Sat, Mar 12, 2022 at 2:31 PM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > From: Hongyi Zhao <hongyi.zhao@gmail.com>
> > Date: Sat, 12 Mar 2022 10:54:49 +0800
> >
> > Say, for back-tick or grave accent ( ` ) symbol, I want to let Emacs
> > give me all of its  name and alias, but the `M-x describe-char ` can
> > only give the following information:
> >
> >   name: GRAVE ACCENT
> >   old-name: SPACING GRAVE
> >
> > So, I want to know if it's possible to find all the name and alias
> > corresponding to a codepoint in Emacs.
>
> Right next to the "Character code properties:" heading in the buffer
> shown by describe-char, there's a button whose title is "customize
> what to show".  If you click it or press RET on it, you will be shown
> a buffer where you customize what character properties to display.

Thank you. I see, as shown in the attachment.

Best regards,
Hongyi

[-- Attachment #2: image.png --]
[-- Type: image/png, Size: 136314 bytes --]

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Hongyi Zhao]

On Sat, Mar 12, 2022 at 4:43 PM Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>
> On Sat, Mar 12, 2022 at 2:31 PM Eli Zaretskii <eliz@gnu.org> wrote:
> >
> > > From: Hongyi Zhao <hongyi.zhao@gmail.com>
> > > Date: Sat, 12 Mar 2022 10:54:49 +0800
> > >
> > > Say, for back-tick or grave accent ( ` ) symbol, I want to let Emacs
> > > give me all of its  name and alias, but the `M-x describe-char ` can
> > > only give the following information:
> > >
> > >   name: GRAVE ACCENT
> > >   old-name: SPACING GRAVE
> > >
> > > So, I want to know if it's possible to find all the name and alias
> > > corresponding to a codepoint in Emacs.
> >
> > Right next to the "Character code properties:" heading in the buffer
> > shown by describe-char, there's a button whose title is "customize
> > what to show".  If you click it or press RET on it, you will be shown
> > a buffer where you customize what character properties to display.
>
> Thank you. I see, as shown in the attachment.

Now, I've enabled all the properties defined in "Describe Char Unidata List":

(setq describe-char-unidata-list
      '(name old-name general-category canonical-combining-class
bidi-class decomposition decimal-digit-value digit-value numeric-value
mirrored iso-10646-comment uppercase lowercase titlecase)
      )


But `M-x describe-char ` still gives the following information:

```
             position: 1 of 1 (0%), column: 0
            character: ` (displayed as `) (codepoint 96, #o140, #x60)
              charset: ascii (ASCII (ISO646 IRV))
code point in charset: 0x60
               script: latin
               syntax: '     which means: prefix
             category: .:Base, a:ASCII, l:Latin, r:Roman
             to input: type "C-x 8 RET 60" or "C-x 8 RET GRAVE ACCENT"
          buffer code: #x60
            file code: #x60 (encoded by coding system utf-8-unix)
              display: by this font (glyph code):
    ftcrhb:-PfEd-DejaVuSansMono Nerd Font
Mono-regular-normal-normal-*-20-*-*-*-m-0-iso10646-1 (#x43)

Character code properties: customize what to show
  name: GRAVE ACCENT
  old-name: SPACING GRAVE
  general-category: Sk (Symbol, Modifier)
  canonical-combining-class: 0 (Spacing, split, enclosing, reordrant,
and Tibetan subjoined)
  bidi-class: ON (Other Neutrals)
  decomposition: (96) ('`')
  mirrored: N

There are 3 overlays here:
 From 1 to 1
  face                 highlight
 From 1 to 1
  face                 highlight
 From 1 to 1
  face                 highlight


There are text properties here:
  fontified            t
  wrap-prefix          " "
  ws-butler-chg        chg

[back]

```

Best regards,
Hongyi

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Eli Zaretskii]

> From: Hongyi Zhao <hongyi.zhao@gmail.com>
> Date: Sat, 12 Mar 2022 16:55:26 +0800
> Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>
> 
> Now, I've enabled all the properties defined in "Describe Char Unidata List":
> 
> (setq describe-char-unidata-list
>       '(name old-name general-category canonical-combining-class
> bidi-class decomposition decimal-digit-value digit-value numeric-value
> mirrored iso-10646-comment uppercase lowercase titlecase)
>       )
> 
> 
> But `M-x describe-char ` still gives the following information:
> 
> ```
>              position: 1 of 1 (0%), column: 0
>             character: ` (displayed as `) (codepoint 96, #o140, #x60)
>               charset: ascii (ASCII (ISO646 IRV))
> code point in charset: 0x60
>                script: latin
>                syntax: '     which means: prefix
>              category: .:Base, a:ASCII, l:Latin, r:Roman
>              to input: type "C-x 8 RET 60" or "C-x 8 RET GRAVE ACCENT"
>           buffer code: #x60
>             file code: #x60 (encoded by coding system utf-8-unix)
>               display: by this font (glyph code):
>     ftcrhb:-PfEd-DejaVuSansMono Nerd Font
> Mono-regular-normal-normal-*-20-*-*-*-m-0-iso10646-1 (#x43)
> 
> Character code properties: customize what to show
>   name: GRAVE ACCENT
>   old-name: SPACING GRAVE
>   general-category: Sk (Symbol, Modifier)
>   canonical-combining-class: 0 (Spacing, split, enclosing, reordrant,
> and Tibetan subjoined)
>   bidi-class: ON (Other Neutrals)
>   decomposition: (96) ('`')
>   mirrored: N

Why is that a problem?  The properties that aren't shown are all nil,
so they are not interesting.  Emacs shows to you all the properties
whose values are useful.

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Hongyi Zhao]

On Sat, Mar 12, 2022 at 5:36 PM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > From: Hongyi Zhao <hongyi.zhao@gmail.com>
> > Date: Sat, 12 Mar 2022 16:55:26 +0800
> > Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>
> >
> > Now, I've enabled all the properties defined in "Describe Char Unidata List":
> >
> > (setq describe-char-unidata-list
> >       '(name old-name general-category canonical-combining-class
> > bidi-class decomposition decimal-digit-value digit-value numeric-value
> > mirrored iso-10646-comment uppercase lowercase titlecase)
> >       )
> >
> >
> > But `M-x describe-char ` still gives the following information:
> >
> > ```
> >              position: 1 of 1 (0%), column: 0
> >             character: ` (displayed as `) (codepoint 96, #o140, #x60)
> >               charset: ascii (ASCII (ISO646 IRV))
> > code point in charset: 0x60
> >                script: latin
> >                syntax: '     which means: prefix
> >              category: .:Base, a:ASCII, l:Latin, r:Roman
> >              to input: type "C-x 8 RET 60" or "C-x 8 RET GRAVE ACCENT"
> >           buffer code: #x60
> >             file code: #x60 (encoded by coding system utf-8-unix)
> >               display: by this font (glyph code):
> >     ftcrhb:-PfEd-DejaVuSansMono Nerd Font
> > Mono-regular-normal-normal-*-20-*-*-*-m-0-iso10646-1 (#x43)
> >
> > Character code properties: customize what to show
> >   name: GRAVE ACCENT
> >   old-name: SPACING GRAVE
> >   general-category: Sk (Symbol, Modifier)
> >   canonical-combining-class: 0 (Spacing, split, enclosing, reordrant,
> > and Tibetan subjoined)
> >   bidi-class: ON (Other Neutrals)
> >   decomposition: (96) ('`')
> >   mirrored: N
>
> Why is that a problem?

The "grave accent" is also named as "backtick" or "backquote", and I
hope to see all these names in Emacs.

> The properties that aren't shown are all nil,
> so they are not interesting.  Emacs shows to you all the properties
> whose values are useful.

Thank you for your explanation.

Best,
Hongyi

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Eli Zaretskii]

> From: Hongyi Zhao <hongyi.zhao@gmail.com>
> Date: Sat, 12 Mar 2022 19:20:11 +0800
> Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>
> 
> > > Character code properties: customize what to show
> > >   name: GRAVE ACCENT
> > >   old-name: SPACING GRAVE
> > >   general-category: Sk (Symbol, Modifier)
> > >   canonical-combining-class: 0 (Spacing, split, enclosing, reordrant,
> > > and Tibetan subjoined)
> > >   bidi-class: ON (Other Neutrals)
> > >   decomposition: (96) ('`')
> > >   mirrored: N
> >
> > Why is that a problem?
> 
> The "grave accent" is also named as "backtick" or "backquote", and I
> hope to see all these names in Emacs.

We only show the Unicode data, and it has only "SPACING GRAVE" as an
alternative name.

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Hongyi Zhao]

On Sat, Mar 12, 2022 at 7:40 PM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > From: Hongyi Zhao <hongyi.zhao@gmail.com>
> > Date: Sat, 12 Mar 2022 19:20:11 +0800
> > Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>
> >
> > > > Character code properties: customize what to show
> > > >   name: GRAVE ACCENT
> > > >   old-name: SPACING GRAVE
> > > >   general-category: Sk (Symbol, Modifier)
> > > >   canonical-combining-class: 0 (Spacing, split, enclosing, reordrant,
> > > > and Tibetan subjoined)
> > > >   bidi-class: ON (Other Neutrals)
> > > >   decomposition: (96) ('`')
> > > >   mirrored: N
> > >
> > > Why is that a problem?
> >
> > The "grave accent" is also named as "backtick" or "backquote", and I
> > hope to see all these names in Emacs.
>
> We only show the Unicode data, and it has only "SPACING GRAVE" as an
> alternative name.

Thank you for your explanation. I see.

HZ

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Felix Dietrich]

[-- Attachment #1: Type: text/plain, Size: 1287 bytes --]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Hongyi Zhao <hongyi.zhao@gmail.com>
>> Date: Sat, 12 Mar 2022 19:20:11 +0800
>> Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>
>> 
>> > > Character code properties: customize what to show
>> > >   name: GRAVE ACCENT
>> > >   old-name: SPACING GRAVE
>> > >   general-category: Sk (Symbol, Modifier)
>> > >   canonical-combining-class: 0 (Spacing, split, enclosing, reordrant,
>> > > and Tibetan subjoined)
>> > >   bidi-class: ON (Other Neutrals)
>> > >   decomposition: (96) ('`')
>> > >   mirrored: N
>> >
>> > Why is that a problem?
>> 
>> The "grave accent" is also named as "backtick" or "backquote", and I
>> hope to see all these names in Emacs.
>
> We only show the Unicode data, and it has only "SPACING GRAVE" as an
> alternative name.

A somewhat harebrained idea of mine queries Wikidata for aliases stored
there.  Use the command ‘wd-char-aliases-show’ to display a list of
aliases for the character under the cursor.  This sketch has no comments
or docstrings, nor does it check for errors.  The query is slow and
might very well not be entirely correct.  (I do not have much of an
understanding of SPARQL and Wikidata.)  Maybe it can still be of use to
you – or of interest as a curiosity.


[-- Attachment #2: Emacs Lisp code to search character aliases on Wikidata --]
[-- Type: application/emacs-lisp, Size: 1672 bytes --]

[-- Attachment #3: Type: text/plain, Size: 21 bytes --]



-- 
Felix Dietrich

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[tomas]

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On Sun, Mar 20, 2022 at 05:01:28PM +0100, Felix Dietrich wrote:

[...]

> A somewhat harebrained idea of mine queries Wikidata for aliases stored
> there.

Nice :)

Thanks for this snippet: it tickles the appetite to play around!

Cheers
-- 
t

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Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Hongyi Zhao]

On Mon, Mar 21, 2022 at 12:14 AM Felix Dietrich
<felix.dietrich@sperrhaken.name> wrote:
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> >> From: Hongyi Zhao <hongyi.zhao@gmail.com>
> >> Date: Sat, 12 Mar 2022 19:20:11 +0800
> >> Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>
> >>
> >> > > Character code properties: customize what to show
> >> > >   name: GRAVE ACCENT
> >> > >   old-name: SPACING GRAVE
> >> > >   general-category: Sk (Symbol, Modifier)
> >> > >   canonical-combining-class: 0 (Spacing, split, enclosing, reordrant,
> >> > > and Tibetan subjoined)
> >> > >   bidi-class: ON (Other Neutrals)
> >> > >   decomposition: (96) ('`')
> >> > >   mirrored: N
> >> >
> >> > Why is that a problem?
> >>
> >> The "grave accent" is also named as "backtick" or "backquote", and I
> >> hope to see all these names in Emacs.
> >
> > We only show the Unicode data, and it has only "SPACING GRAVE" as an
> > alternative name.
>
> A somewhat harebrained idea of mine queries Wikidata for aliases stored
> there.  Use the command ‘wd-char-aliases-show’ to display a list of
> aliases for the character under the cursor.  This sketch has no comments
> or docstrings, nor does it check for errors.  The query is slow and
> might very well not be entirely correct.  (I do not have much of an
> understanding of SPARQL and Wikidata.)  Maybe it can still be of use to
> you – or of interest as a curiosity.

Nice. It gives the following query result for "`" discussed here:

varia
grave accent
typewritten backtick
bareia
backquote
backtick
grave

Best,
HZ

Re: Find all the name and alias corresponding to a codepoint in Emacs.

[Emanuel Berg via Users list for the GNU Emacs text editor]

Hongyi Zhao wrote:

> Nice. It gives the following query result for "`" discussed
> here:
>
> varia
> grave accent
> typewritten backtick
> bareia
> qbackquote
> backtick
> grave

Well, it is "backquote" (`backquote') in the Emacs world ...


-- 
underground experts united
https://dataswamp.org/~incal