GNU bug report logs - #50660
28.0.50; Text artifacting when the cursor moves over text under mouse face that originally displayed a box

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From: Po Lu <luangruo <at> yahoo.com>
To: Robert Pluim <rpluim <at> gmail.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, larsi <at> gnus.org, 50660 <at> debbugs.gnu.org
Subject: bug#50660: 28.0.50; Text artifacting when the cursor moves over text under mouse face that originally displayed a box
Date: Thu, 14 Oct 2021 19:25:51 +0800

Robert Pluim <rpluim <at> gmail.com> writes:

>     Po Lu> +  struct face *face_for_box_line = s->face;
>     Po Lu> +
>     Po Lu> +  if (s->hl == DRAW_CURSOR && cursor_in_mouse_face_p (s->w))
>     Po Lu> +    {
>     Po Lu> +      /* In this situation, the cursor is in the mouse face, but
>     Po Lu> +	 s->face hasn't been updated with the mouse face yet. */
>     Po Lu> +      face_for_box_line =
>     Po Lu> +	FACE_FROM_ID_OR_NULL (s->f, MOUSE_HL_INFO (s->f)->mouse_face_face_id);
>     Po Lu> +
>     Po Lu> +      if (!face_for_box_line)
>     Po Lu> +	face_for_box_line = FACE_FROM_ID (s->f, MOUSE_FACE_ID);
>     Po Lu> +    }
>
> This chunk looks like itʼs repeated a lot, perhaps break it out into a
> function?

Actually, on second thought, I think a better solution would be to set
s->face to the mouse face in x_set_cursor_gc if cursor_in_mouse_face_p.

Any thoughts?  TIA.

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