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Flickering/flashing while scrolling #314

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dabrahams opened this issue Feb 15, 2021 · 6 comments
Closed

Flickering/flashing while scrolling #314

dabrahams opened this issue Feb 15, 2021 · 6 comments

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@dabrahams
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I'm experiencing the effect described here: syl20bnr/spacemacs#12009

I'm on Big Sur; emacs-plus was installed with

brew install emacs-plus --with-mailutils --with-xwidgets

I never have this problem with the emacs-mac-port, which I used happily for years before trying emacs-plus.

@dabrahams
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I'm also seeing this when it's built without xwidgets support, FWIW.

@d12frosted
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Hey @dabrahams ,

I suspect, it might be partially related to #137. One of the suggestions - give Emacs 28a try (e.g. brew install emacs-plus@28). I haven't see any glitches for a while on the master branch.

As for Emacs Mac Port, Mitsuharu Yamamoto worked hard on the rendering side and did amazing job for it to look nice. I could 'extract' this into emacs-plus, but then it would contradict with emacs-plus goal to be a formula for GNU Emacs and stay as close as possible. Emacs Mac Port is not just a formula for brew, it's GNU Emacs with a huge amount of patches for macOS.

And now my curiousity wins. I want to know why you decided to give emacs-plus a try. 😄 Don't get me wrong, I am happy that you did and I am sad that you are getting these glitches, but I haven't used Emacs Mac Port for years and don't know how people feel about it 😄

@dabrahams
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dabrahams commented Feb 17, 2021 via email

@d12frosted
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d12frosted commented Apr 3, 2021 via email

@kohlsudduth
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Quick note to verify that I too have seen zero flickering issues with Emacs 28, albeit on the --with-native-comp branch (Doom Emacs, macOS Catalina). Prior to updating, the behavior occurred multiple times a day using Emacs 27. Fingers tightly crossed it's well and truly gone.

@renatoathaydes
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Unfortunately, while Emacs 28 had fixed this issue, at least for me, it's back on Emacs 29.1 :(. It really destroys the experience... however, I noticed that this only happens on my Macbook Air, but not on my Mac Pro M1... even though I installed both via brew in the exactly same way.
I suspect it has something to do with GC that gets just slow enough to cause a buffer refresh to be noticeable?

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4 participants