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Document that `set-mouse-color' does not work everywhere

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* etc/PROBLEMS (Miscellaneous Problems): Mention where
`set-mouse-color' does not work.
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Po Lu 2023-08-10 15:31:03 +08:00
parent d06fc72496
commit 5a7fb0b39b
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etc/PROBLEMS
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@ -575,6 +575,20 @@ This can happen with CVS versions 1.12.8 and 1.12.9. Upgrade to CVS
** Miscellaneous problems
*** 'set-mouse-color' and the '-ms' command line argument do not work.
Systems where the default cursors are not simple 1 bit-per-pixel
bitmaps usually forbid recoloring the cursor, since it is unclear
which colors should replace those already present within each cursor
image. For example, 'set-mouse-color' and '-ms' have no function on X
systems with GNOME, KDE, and other recent desktop environments
employing cursor images containing colors and partial transparency.
Changing the cursor color is also impossible on MS-Windows and PGTK
systems. In the former case, it is because the prerequisite code has
yet to be written. In the latter, it is because GTK does not provide
for changing the color of cursor images.
*** Display artifacts on GUI frames on X-based systems.
This is known to be caused by using double-buffering (which is enabled