The 2019-12-09 22:06, Bram Moolenaar wrote:
It should not flicker that much. Especially now that a mask is used to
only redraw what is needed.
Yes that's the tricky bit, it doesn't flicker nearly that much in a
minimal example, so it's hard to demonstrate. But here is a minimal
example and there _is_ flickering, particularly when moving from
completion items with no 'info' to items _with_ 'info':
https://asciinema.org/a/qAVyBR43LeuGgM2jenE4Mb3VS
The example here is the following, where the completion menu is
triggered with `<C-x><C-u>`:
```vim
func DummyComplete(findstart, base)
if a:findstart
return 0
else
let info = range(100)->map({_ -> 'abcde'})->join()
let noinfo_items = range(5)->map({i -> #{ word: 'word_'..(i+5) }})
let info_items = range(5, 10)->map({i -> #{ word: 'word_'..i, info: info }})
return noinfo_items + info_items
endif
endfunc
set completeopt+=popup
setlocal completefunc=DummyComplete
```
Regards, Nick
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