Name completion when using "read-char-by-name"

Name completion when using "read-char-by-name"

[uzibalqa]

How can I use completion when using "read-char-by-name"?  I could write "*ARROW" but how can I
force it to shew me possible completions?

Re: Name completion when using "read-char-by-name"

[Eli Zaretskii]

> Date: Fri, 07 Oct 2022 00:04:36 +0000
> From: uzibalqa <uzibalqa@proton.me>
> 
> 
> How can I use completion when using "read-char-by-name"?  I could write "*ARROW" but how can I
> force it to shew me possible completions?

As usual in Emacs: by pressing TAB.

Re: Name completion when using "read-char-by-name"

[uzibalqa]

------- Original Message -------
On Friday, October 7th, 2022 at 6:51 AM, Eli Zaretskii <eliz@gnu.org> wrote:


> > Date: Fri, 07 Oct 2022 00:04:36 +0000
> > From: uzibalqa uzibalqa@proton.me
> > 
> > How can I use completion when using "read-char-by-name"? I could write "*ARROW" but how can I
> > force it to shew me possible completions?
> 
> 
> As usual in Emacs: by pressing TAB.

The difficulty occurs with read-char-by-name.  Using the common minibuffer commands such as
"M-x text-TAB" I get the list of possible completions.

But with "read-char-by-name" the TAB does not fire the completion list.

Re: Name completion when using "read-char-by-name"

[Eli Zaretskii]

> Date: Fri, 07 Oct 2022 15:26:45 +0000
> From: uzibalqa <uzibalqa@proton.me>
> Cc: help-gnu-emacs@gnu.org
> 
> > As usual in Emacs: by pressing TAB.
> 
> The difficulty occurs with read-char-by-name.  Using the common minibuffer commands such as
> "M-x text-TAB" I get the list of possible completions.
> 
> But with "read-char-by-name" the TAB does not fire the completion list.

It does here.  The first time you do that in a session it could be a
bit slow, because Emacs needs to scan the entire list of Unicode
characters.  But it does pop up a buffer with completions.

Re: Name completion when using "read-char-by-name"

[uzibalqa]

------- Original Message -------
On Friday, October 7th, 2022 at 3:41 PM, Eli Zaretskii <eliz@gnu.org> wrote:


> > Date: Fri, 07 Oct 2022 15:26:45 +0000
> > From: uzibalqa uzibalqa@proton.me
> > Cc: help-gnu-emacs@gnu.org
> > 
> > > As usual in Emacs: by pressing TAB.
> > 
> > The difficulty occurs with read-char-by-name. Using the common minibuffer commands such as
> > "M-x text-TAB" I get the list of possible completions.
> > 
> > But with "read-char-by-name" the TAB does not fire the completion list.
> 
> 
> It does here. The first time you do that in a session it could be a
> bit slow, because Emacs needs to scan the entire list of Unicode
> characters. But it does pop up a buffer with completions.

I am quite sure that it is not a question of being slow because I get [no match].
Perhaps there is a setting for completions?  I am using Emacs 29.0.50

Re: Name completion when using "read-char-by-name"

[Eli Zaretskii]

> Date: Fri, 07 Oct 2022 17:33:11 +0000
> From: uzibalqa <uzibalqa@proton.me>
> Cc: help-gnu-emacs@gnu.org
> 
> > > "M-x text-TAB" I get the list of possible completions.
> > > 
> > > But with "read-char-by-name" the TAB does not fire the completion list.
> > 
> > 
> > It does here. The first time you do that in a session it could be a
> > bit slow, because Emacs needs to scan the entire list of Unicode
> > characters. But it does pop up a buffer with completions.
> 
> I am quite sure that it is not a question of being slow because I get [no match].
> Perhaps there is a setting for completions?  I am using Emacs 29.0.50

Is this in "emacs -Q"?  If not, look at your customizations.

Re: Name completion when using "read-char-by-name"

[uzibalqa]

------- Original Message -------
On Friday, October 7th, 2022 at 7:08 PM, Eli Zaretskii <eliz@gnu.org> wrote:


> > Date: Fri, 07 Oct 2022 17:33:11 +0000
> > From: uzibalqa uzibalqa@proton.me
> > Cc: help-gnu-emacs@gnu.org
> > 
> > > > "M-x text-TAB" I get the list of possible completions.
> > > > 
> > > > But with "read-char-by-name" the TAB does not fire the completion list.
> > > 
> > > It does here. The first time you do that in a session it could be a
> > > bit slow, because Emacs needs to scan the entire list of Unicode
> > > characters. But it does pop up a buffer with completions.
> > 
> > I am quite sure that it is not a question of being slow because I get [no match].
> > Perhaps there is a setting for completions? I am using Emacs 29.0.50
> 
> 
> Is this in "emacs -Q"? If not, look at your customizations.

Some package is changing the behaviour because things work with "emacs -Q".

Re: Name completion when using "read-char-by-name"

[uzibalqa]

------- Original Message -------
On Friday, October 7th, 2022 at 7:22 PM, uzibalqa <uzibalqa@proton.me> wrote:


> ------- Original Message -------
> On Friday, October 7th, 2022 at 7:08 PM, Eli Zaretskii eliz@gnu.org wrote:
> 
> 
> 
> > > Date: Fri, 07 Oct 2022 17:33:11 +0000
> > > From: uzibalqa uzibalqa@proton.me
> > > Cc: help-gnu-emacs@gnu.org
> > > 
> > > > > "M-x text-TAB" I get the list of possible completions.
> > > > > 
> > > > > But with "read-char-by-name" the TAB does not fire the completion list.
> > > > 
> > > > It does here. The first time you do that in a session it could be a
> > > > bit slow, because Emacs needs to scan the entire list of Unicode
> > > > characters. But it does pop up a buffer with completions.
> > > 
> > > I am quite sure that it is not a question of being slow because I get [no match].
> > > Perhaps there is a setting for completions? I am using Emacs 29.0.50
> > 
> > Is this in "emacs -Q"? If not, look at your customizations.
> 
> 
> Some package is changing the behaviour because things work with "emacs -Q".

What commands could be changing the default behaviour?

RE: [External] : Re: Name completion when using "read-char-by-name"

[Drew Adams]

> > > Is this in "emacs -Q"? If not, look at your customizations.
> >
> >
> > Some package is changing the behaviour because
> > things work with "emacs -Q".
> 
> What commands could be changing the default behaviour?

Bisect your init file, to find out just where
you're shooting yourself in the foot.

Once you've determined that you're the culprit,
it's up to you to find where you're hurting
yourself.  Bisect, bisect, bisect.  That's a
binary search - performant.

Re: Name completion when using "read-char-by-name"

[Eli Zaretskii]

> Date: Fri, 07 Oct 2022 19:24:00 +0000
> From: uzibalqa <uzibalqa@proton.me>
> Cc: help-gnu-emacs@gnu.org
> 
> > > Is this in "emacs -Q"? If not, look at your customizations.
> > 
> > 
> > Some package is changing the behaviour because things work with "emacs -Q".
> 
> What commands could be changing the default behaviour?

I don't know, something that deals with completion, perhaps?

But bisection is the best strategy.

Re: Name completion when using "read-char-by-name"

[uzibalqa]

------- Original Message -------
On Friday, October 7th, 2022 at 3:26 PM, uzibalqa <uzibalqa@proton.me> wrote:


> ------- Original Message -------
> On Friday, October 7th, 2022 at 6:51 AM, Eli Zaretskii eliz@gnu.org wrote:
> 
> 
> 
> > > Date: Fri, 07 Oct 2022 00:04:36 +0000
> > > From: uzibalqa uzibalqa@proton.me
> > > 
> > > How can I use completion when using "read-char-by-name"? I could write "*ARROW" but how can I
> > > force it to shew me possible completions?
> > 
> > As usual in Emacs: by pressing TAB.
> 
> 
> The difficulty occurs with read-char-by-name. Using the common minibuffer commands such as
> "M-x text-TAB" I get the list of possible completions.
> 
> But with "read-char-by-name" the TAB does not fire the completion list.

Ok.  I give some additional information.  If I input "RIGHT<TAB>" I do get the completion.
But what if I want names with "RIGHT" in the middle of a name?

Re: Name completion when using "read-char-by-name"

[Bruno Barbier]

uzibalqa <uzibalqa@proton.me> writes:

> ------- Original Message -------
> On Friday, October 7th, 2022 at 3:26 PM, uzibalqa <uzibalqa@proton.me> wrote:
>
>
>> ------- Original Message -------
>> On Friday, October 7th, 2022 at 6:51 AM, Eli Zaretskii eliz@gnu.org wrote:
>> 
>> 
>> 
>> > > Date: Fri, 07 Oct 2022 00:04:36 +0000
>> > > From: uzibalqa uzibalqa@proton.me
>> > > 
>> > > How can I use completion when using "read-char-by-name"? I could write "*ARROW" but how can I
>> > > force it to shew me possible completions?
>> > 
>> > As usual in Emacs: by pressing TAB.
>> 
>> 
>> The difficulty occurs with read-char-by-name. Using the common minibuffer commands such as
>> "M-x text-TAB" I get the list of possible completions.
>> 
>> But with "read-char-by-name" the TAB does not fire the completion list.
>
> Ok.  I give some additional information.  If I input "RIGHT<TAB>" I do get the completion.
> But what if I want names with "RIGHT" in the middle of a name?

If you're using the default completion style, try:

    <TAB>RIGHT

that is, move the cursor back before "RIGHT".

See 'basic' in the Emacs manual:

   (info "(emacs) Completion Styles")


Bruno

Re: Name completion when using "read-char-by-name"

[uzibalqa]

------- Original Message -------
On Friday, October 7th, 2022 at 6:31 PM, Bruno Barbier <brubar.cs@gmail.com> wrote:


> uzibalqa uzibalqa@proton.me writes:
> 
> > ------- Original Message -------
> > On Friday, October 7th, 2022 at 3:26 PM, uzibalqa uzibalqa@proton.me wrote:
> > 
> > > ------- Original Message -------
> > > On Friday, October 7th, 2022 at 6:51 AM, Eli Zaretskii eliz@gnu.org wrote:
> > > 
> > > > > Date: Fri, 07 Oct 2022 00:04:36 +0000
> > > > > From: uzibalqa uzibalqa@proton.me
> > > > > 
> > > > > How can I use completion when using "read-char-by-name"? I could write "*ARROW" but how can I
> > > > > force it to shew me possible completions?
> > > > 
> > > > As usual in Emacs: by pressing TAB.
> > > 
> > > The difficulty occurs with read-char-by-name. Using the common minibuffer commands such as
> > > "M-x text-TAB" I get the list of possible completions.
> > > 
> > > But with "read-char-by-name" the TAB does not fire the completion list.
> > 
> > Ok. I give some additional information. If I input "RIGHT<TAB>" I do get the completion.
> > But what if I want names with "RIGHT" in the middle of a name?
> 
> 
> If you're using the default completion style, try:
> 
> <TAB>RIGHT
> 
> 
> that is, move the cursor back before "RIGHT".
> 
> See 'basic' in the Emacs manual:
> 
> (info "(emacs) Completion Styles")

That does not complete for names that include RIGHT

Re: Name completion when using "read-char-by-name"

[Eli Zaretskii]

> Date: Fri, 07 Oct 2022 16:04:38 +0000
> From: uzibalqa <uzibalqa@proton.me>
> Cc: help-gnu-emacs@gnu.org
> 
> > But with "read-char-by-name" the TAB does not fire the completion list.
> 
> Ok.  I give some additional information.  If I input "RIGHT<TAB>" I do get the completion.
> But what if I want names with "RIGHT" in the middle of a name?

Type *RIGHT<TAB>

Note the asterisk.

P.S.  Do you ever try to read the documentation of the features you
ask about, before you ask?  Or do you expect others to spell it out
for you?  Because everything you ask for is in the documentation.  For
example, this last question's answer is right there in the doc string:

  You can type a few of the first letters of the Unicode name and
  use completion.  If you type a substring of the Unicode name
  preceded by an asterisk ‘*’ and use completion, it will show all
  the characters whose names include that substring, not necessarily
  at the beginning of the name.