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From: JD Smith <jdtsmith@gmail.com>
To: 72287@debbugs.gnu.org
Subject: bug#72287: Emacs 29; RTL replacing display bug on 1st line
Date: Thu, 25 Jul 2024 08:29:45 -0400	[thread overview]
Message-ID: <9B4D7166-F63F-4980-9A48-492E8D85036A@gmail.com> (raw)

With bidi-paragraph-direction=right-to-left, replacing 'display properties are sometimes reversed on the 1st displayed line of text. 

(let* ((w (window-font-width))
       (h (window-font-height))
       (face )
       (str (cl-loop for col in '("red" "green" "blue" "cyan")
                     concat "  "
                     concat (propertize " " 'face `(:background ,col)))))
    (dotimes (i 10)
      (insert "\n" (propertize " " 'display str) (format ";;  line %d" i))))

Evaluate in *scratch* and scroll the color bars off the top of the screen.  Try again with bidi-paragraph-direction=right-to-left and the color order will invert and the bars shift by one char.   

Verified in Emacs 29 emacs-mac and NS builds.




             reply	other threads:[~2024-07-25 12:29 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-25 12:29 JD Smith [this message]
2024-07-25 18:27 ` bug#72287: Emacs 29; RTL replacing display bug on 1st line Eli Zaretskii
2024-08-17  8:09   ` Eli Zaretskii

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