GNU bug report logs - #60781
28.2; column-number-mode counts differently based on character encoding

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

From: Van Ly <van.ly <at> sdf.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.2;
 column-number-mode counts differently based on character encoding
Date: Fri, 13 Jan 2023 13:31:29 GMT

[Message part 1 (text/plain, inline)]

Hello,

// one right arrow key move of the cursor from the left most position
// numbers differently in column-number-mode based on character encoding

These steps reproduce the observed unexpected behavior:

* emacs -Q /tmp/example.text
* move cursor to line two at left most position, then right arrow key once
* M-x column-number-mode
* the modeline indicator shows (2,2)
* move cursor to line nine at left most position, then right arrow key once
* the modeline indicator shows (9,1)

// for cjk the column number is two
// for ascii the column number is one

* expected modeline indicator to show (2,1) and (9,1)

See attached: bug-report.text, example.text

[bug-report.text (application/octet-stream, attachment)]

[example.text (application/octet-stream, attachment)]

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