bug#6609: 23.2; Cursor becomes invisible when put over some faces

[Deniz Dogan]

2010/7/12 Eli Zaretskii <eliz@gnu.org>:
>> From: Deniz Dogan <deniz.a.m.dogan@gmail.com>
>> Date: Sun, 11 Jul 2010 21:49:12 +0200
>> Cc: 6609@debbugs.gnu.org
>>
>> Terribly sorry about that. I did mean white foreground on black
>> background in the original report!
>
> A world of difference.  I do see this problem on XP as well, then.
>
> Can someone try this on GNU/Linux in a GUI session, please?  I'd like
> to know if this problem is specific to w32.
>
> To repeat the recipe:
>
>  emacs -Q
>
> Insert this in the *scratch* buffer:
>
>  (set-background-color "black")
>  (set-foreground-color "white")
>
> Evaluate these two lines.  Your cursor will now become invisible.  You
> can only see it (a) when it is on some text of a non-default color, or
> (b) when the Emacs frame does not have focus, and the cursor is
> displayed as a hollow rectangle.
>
> "M-x set-face-background RET cursor RET white RET" fixes the problem.
> So my first guess would be that we don't do that automatically as part
> of changing the default face, for some reason.
>

I have tried this on GNU/Linux as well (Bazaar version from some time
in June) and the problem does not appear there. I can't remember it
ever happening on GNU/Linux actually.