GNU bug report logs - #77998
30.0.50; thai-pattachote input method is missing characters?

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Robert Nikander <robert.nikander <at> icloud.com>
Subject: bug#77998: closed (Re: bug#77998: 30.0.50; thai-pattachote input
 method is missing characters?)
Date: Sat, 26 Apr 2025 13:49:03 +0000

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Your bug report

#77998: 30.0.50; thai-pattachote input method is missing characters?

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 77998 <at> debbugs.gnu.org.

-- 
77998: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=77998
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Robert Nikander <robert.nikander <at> icloud.com>
Cc: 77998-done <at> debbugs.gnu.org
Subject: Re: bug#77998: 30.0.50; thai-pattachote input method is missing
 characters?
Date: Sat, 26 Apr 2025 16:48:26 +0300

> From: Robert Nikander <robert.nikander <at> icloud.com>
> Date: Wed, 23 Apr 2025 18:30:55 -0600
> Cc: Eli Zaretskii <eliz <at> gnu.org>
> 
> 
> > On Apr 23, 2025, at 6:11 AM, Eli Zaretskii <eliz <at> gnu.org> wrote:
> > 
> > Thanks.  Can you try identifying additional missing characters, if
> > there are any?  An input method might omit some characters, but not if
> > they are used frequently enough.  So I think we would like to add any
> > missing characters, if that is possible.
> 
> 
> Okay, I've taken a closer look at this, and I think I see a way to fix it, or at least improve it significantly. There are two input methods for Thai:
> 
> 1. thai-pattachote
> 2. thai-kesmanee
> 
> The second one works better, and includes most of the characters, except a couple more exotic ones as explained in the Help displayed by `describe-input-method`. This `thai-kesmanee` method may be misspelled [1], but I don't care much about that.
> 
> It appears that the `thai-pattachote` method has both missing chars and duplicate chars. I compared the keyboard displayed by `describe-input-method` with the keyboard shown here: [2]. There are three duplicates that shouldn't be there, and those line up exactly with the three missing chars.
> 
> These characters are difficult to see, especially with a small font, so I can see why someone apparently made these mistakes.
> 
> Here are the missing characters:
> 
> 1. ฉ
> 2. ฌ
> 3. ฏ
> 
> These are duplicated characters:
> 
> 1. ฒ - It can be typed 3 ways: ], .+shift, p+shift
> 2. ั - It can be typed 2 ways: g, b+shift
> 3. ฎ - It can be typed 2 ways: z+shift, x+shift
> 
> Now the #2 duplicate appears to be consistent with the Pattachote keyboard. But #1 and #3 provide us with the 3 new spaces to use for the missing letters.
> 
> = Changes =
> 
> 1. The shifted '.' key ('>') should map to 'ฉ', not 'ฒ' as it does now. So '>' -> 'ฉ' fixes missing char #1. 
> 
> 2. The ']' key should be inserting 'ฌ', not 'ฒ' as it does now. So ']' -> 'ฌ' fixes missing char #2.
> 
> 3. The shifted 'x' key should be inserting 'ฏ', not 'ฎ' as it is now. That fixes missing char #3.
> 
> A bit of a disclaimer… I don’t know Thai. Ideally someone who does would check this. But I’m pretty confident this is correct because the way the duped keys lined up exactly with the missing ones, when looking at the keyboard at [2].

Thanks, I've made your proposed changes, and I'm therefore closing
this bug.

[Message part 3 (message/rfc822, inline)]

From: Robert Nikander <robert.nikander <at> icloud.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; thai-pattachote input method is missing characters?
Date: Tue, 22 Apr 2025 16:51:09 -0600

Hi, 

I've been learning how to read Thai. I tried the input method `thai-pattachote`. I'm a beginner so not 100% sure about this, but it seems to be missing the character ฉ (THAI CHARACTER CHO CHING). Is that a bug? An input method should have all the characters in the alphabet, no?

When you do `describe-input-method` it shows you a keyboard, like this:

+----------------------------------------------------------------+
 | = + | ๒ " | ๓ / | ๔ , | ๕ ? | ู ุ | ๗ _ | ๘ . | ๙ ( | ๐ ) | ๑ - | ๖ % | ฃ ฅ |
+----------------------------------------------------------------+
   | ็ ๊ | ต ฤ | ย ๆ | อ ญ | ร ษ | ่ ึ | ด ฝ | ม ซ | ว ถ | แ ฒ | ใ ฯ | ฒ ฦ |
  +------------------------------------------------------------+
    | ้ ๋ | ท ธ | ง ำ | ก ณ | ั ์ | ี ื | า ผ | น ช | เ โ | ไ ฆ | ข ฑ | ฺ ํ |
   +-----------------------------------------------------------+
      | บ ฎ | ป ฎ | ล ฐ | ห ภ | ิ ั | ค ศ | ส ฮ | ะ ฟ | จ ฒ | พ ฬ |
     +-------------------------------------------------+

The character is not there. There may be more missing characters. This is just the first one I hit as I’m working through the alphabet. 

Rob


In GNU Emacs 30.0.50 (build 1, x86_64-apple-darwin18.7.0, NS
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