GNU bug report logs - #71822
Feature request: fullwidth to halfwidth

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Package: emacs; Severity: wishlist; Reported by: Dan Jacobson <jidanni@HIDDEN>; dated Fri, 28 Jun 2024 12:58:02 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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From: Kazuhiro Ito <kzhr@HIDDEN>
To: 71822 <at> debbugs.gnu.org
Subject: Re: bug#71822: Feature request: fullwidth to halfwidth
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Information forwarded to bug-gnu-emacs@HIDDEN:
bug#71822; Package emacs. Full text available.

Message received at 71822 <at> debbugs.gnu.org:


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Date: Sun, 30 Jun 2024 11:30:27 +0300
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From: Eli Zaretskii <eliz@HIDDEN>
To: Dan Jacobson <jidanni@HIDDEN>
In-Reply-To: <87r0cezvn2.3.fsf@HIDDEN> (message from Dan Jacobson on Sun, 
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Subject: Re: bug#71822: Feature request: fullwidth to halfwidth
References: <87zfr5307k.3.fsf@HIDDEN> <864j9d41v4.fsf@HIDDEN>
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> From: Dan Jacobson <jidanni@HIDDEN>
> Cc: 71822 <at> debbugs.gnu.org
> Date: Sun, 30 Jun 2024 16:23:45 +0800
> 
> >>>>> "EZ" == Eli Zaretskii <eliz@HIDDEN> writes:
> EZ> use cases for these commands
> 
> All offline (I. e. all by hand), I start out with English,
> 
> 1. Her ID number is 0987654321BA.
> 
> I rewrite the first part in Chinese,
> 
> 2. 她證號為 0987654321BA 。
> 
> But to get it into its final state,
> 
> 3. 她證號為098...
> 
> I need to retype each and every number and letter "all over again" (but
> in fullwidth), because there is no M-<something> command to change it
> for me. As you see I have given up halfway.

You are saying that the keyboard and/or the input method you are using
to type Chinese support characters such as 她證號為, but don't support
typing wide digits like 098, is that the problem?




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#71822; Package emacs. Full text available.

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From: Dan Jacobson <jidanni@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#71822: Feature request: fullwidth to halfwidth
References: <87zfr5307k.3.fsf@HIDDEN> <864j9d41v4.fsf@HIDDEN>
 <87y16nvzvo.7.fsf@HIDDEN> <86wmm7gfys.fsf@HIDDEN>
Date: Sun, 30 Jun 2024 16:23:45 +0800
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>>>>> "EZ" == Eli Zaretskii <eliz@HIDDEN> writes:
EZ> use cases for these commands

All offline (I. e. all by hand), I start out with English,

1. Her ID number is 0987654321BA.

I rewrite the first part in Chinese,

2. 她證號為 0987654321BA 。

But to get it into its final state,

3. 她證號為098...

I need to retype each and every number and letter "all over again" (but
in fullwidth), because there is no M-<something> command to change it
for me. As you see I have given up halfway.




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#71822; Package emacs. Full text available.

Message received at 71822 <at> debbugs.gnu.org:


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Date: Sun, 30 Jun 2024 08:24:59 +0300
Message-Id: <86wmm7gfys.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Dan Jacobson <jidanni@HIDDEN>
In-Reply-To: <87y16nvzvo.7.fsf@HIDDEN> (message from Dan Jacobson on Sun, 
 30 Jun 2024 12:04:07 +0800)
Subject: Re: bug#71822: Feature request: fullwidth to halfwidth
References: <87zfr5307k.3.fsf@HIDDEN> <864j9d41v4.fsf@HIDDEN>
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> From: Dan Jacobson <jidanni@HIDDEN>
> Cc: 71822 <at> debbugs.gnu.org
> Date: Sun, 30 Jun 2024 12:04:07 +0800
> 
> >>>>> "EZ" == Eli Zaretskii <eliz@HIDDEN> writes:
> >> Have commands that can change wide to narrow,
> >> with the same ease as M-l.
> >> E.g., change 209M into 209M.
> >> and another command to do the opposite.
> >> OK, I guess they are called fullwidth and halfwidth.
> 
> EZ> When would such commands be useful?
> 
> We use them all the time in Chinese,
> 請由209M號門        Ugly
> 請由209M號門    Pretty

That's about use of the characters, not about the use cases for the
commands you proposed.  Or maybe I don't understand the example, in
which case please elaborate.

> EZ> These characters are deliberately
> EZ> not the same, and not just different shapes of the same letters
> EZ> (unlike upper-case and lower-case letters).
> 
> $ unicode 209M|grep Deco
> Decomposition: <wide> 0032
> Decomposition: <wide> 0030
> Decomposition: <wide> 0039
> Decomposition: <wide> 004D

Yes, and..?

I didn't ask whether Emacs has the requisite information, I asked
about the use cases for these commands.  You presented none; instead,
you are lecturing me on basic Unicode attributes of characters and on
the reasons for having the wide ones.  That is not helpful; I already
know all that.  It definitely doesn't provide any rationale for having
such commands in Emacs.




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#71822; Package emacs. Full text available.

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From: Dan Jacobson <jidanni@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#71822: Feature request: fullwidth to halfwidth
Date: Sun, 30 Jun 2024 12:04:07 +0800
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>>>>> "EZ" == Eli Zaretskii <eliz@HIDDEN> writes:
>> Have commands that can change wide to narrow,
>> with the same ease as M-l.
>> E.g., change 209M into 209M.
>> and another command to do the opposite.
>> OK, I guess they are called fullwidth and halfwidth.

EZ> When would such commands be useful?

We use them all the time in Chinese,
請由209M號門        Ugly
請由209M號門    Pretty

EZ> These characters are deliberately
EZ> not the same, and not just different shapes of the same letters
EZ> (unlike upper-case and lower-case letters).

$ unicode 209M|grep Deco
Decomposition: <wide> 0032
Decomposition: <wide> 0030
Decomposition: <wide> 0039
Decomposition: <wide> 004D




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#71822; Package emacs. Full text available.

Message received at 71822 <at> debbugs.gnu.org:


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> From: Dan Jacobson <jidanni@HIDDEN>
> Date: Fri, 28 Jun 2024 17:06:55 +0800
> 
> M-l runs the command downcase-word.
> That's great. But here's a feature request:
> Have commands that can change wide to narrow,
> with the same ease as M-l.
> E.g., change 209M into 209M.
> and another command to do the opposite.
> OK, I guess they are called fullwidth and halfwidth.

When would such commands be useful?  These characters are deliberately
not the same, and not just different shapes of the same letters
(unlike upper-case and lower-case letters).




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#71822; Package emacs. Full text available.

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From: Dan Jacobson <jidanni@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: Feature request: fullwidth to halfwidth
Date: Fri, 28 Jun 2024 17:06:55 +0800
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M-l runs the command downcase-word.
That's great. But here's a feature request:
Have commands that can change wide to narrow,
with the same ease as M-l.
E.g., change 209M into 209M.
and another command to do the opposite.
OK, I guess they are called fullwidth and halfwidth.




Acknowledgement sent to Dan Jacobson <jidanni@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#71822; Package emacs. Full text available.
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