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bug#49695: 27.2; wrap-prefix text property doesn't work with display pro
bug#49695: 27.2; wrap-prefix text property doesn't work with display property
Thu, 22 Jul 2021 21:26:19 +0300
> Date: Thu, 22 Jul 2021 21:51:23 +0900
> From: Shingo Tanaka <email@example.com>
> wrap-prefix text property doesn't work properly when a character with display
> property is in the beginning of a line. Here is how to reproduce.
> 1. Goto *scratch* buffer
> 2. Evaluate below preconditioning function.
> (defun preconditioning ()
> (goto-char (point-min))
> (insert "This is a sample text.\n")
> (forward-line -1)
> (put-text-property (line-beginning-position) (line-end-position)
> 'wrap-prefix " ")
> (search-forward "This is a ")
> (put-text-property (point) (1+ (point)) 'display "X")
> (goto-char (point-min)))
> 3. Execute it with M-x preconditioning
> 4. Confirm the text "This is a sample text." is inserted in the beginning of
> the buffer and your cursor is as well. Note that this text has wrap-prefix
> property and "X" is the character which has display property.
> 5. Start typing spaces (or any character) and observe how the text is wrapped.
> 6. You will see wrap-prefix works correctly until wrapped point gets "X" like:
> This is a Xample
> 7. However, you will see it doesn't work when "X" gets in the beginning of the
> line like:
> This is a
> Xample text.
Thanks, should be fixed now on the master branch.