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* etc/PROBLEMS: Mention bug#65432 and its remedy.

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Po Lu 2023-09-03 09:25:06 +08:00
parent dd896ea1e6
commit fd5593c7f2
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etc/PROBLEMS
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@ -1624,6 +1624,18 @@ to normal, do
(set-scroll-bar-mode 'left)
*** Redisplay with scaled images is slow when built with Cairo.
Cairo expends a noticeable amount of time displaying large images with
a transform applied. These images most frequently appear within Eww
buffers or Image Mode buffers after executing the image scaling
commands `i +' or `i -', and their presence incurs a performance
penalty of hundereds of milliseconds to seconds upon redisplay. The
remedy is to build without Cairo after verifying the XRender extension
is present on your X server and its headers are present on your
system, whereupon Emacs will use that extension to efficiently perform
image transforms within the X server.
*** Error messages about undefined colors on X.
The messages might say something like this: