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vim:au: Fix flickering of selection highlights

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Defer the clearing of the old highlight as well. This means that the old
highlight will remain a bit longer but prevents the highlight from
flickering because of the continuous `matchdelete`.
This commit is contained in:
Julian Prein
2024-11-04 17:17:20 +01:00
parent 551fde8f2b
commit 312ea225da
1 changed files with 19 additions and 12 deletions
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31
.config/vim/vimrc.d/80-autocommands.vim
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@@ -102,8 +102,10 @@ function! s:highlight_selection()
return
endif
" Clear previous highlight and kill the possibly already running timer
call s:clear_highlights(s:CLEAR_HIGHS_VISUAL)
" Kill the possibly already running timer
if exists('w:selection_timer_id')
call timer_stop(w:selection_timer_id)
endif
" Delay the highlight by 100ms so that not every selection is highlighted
" while moving the cursor fast. (This kind of simulates a CursorHold
@@ -128,21 +130,28 @@ function! s:_highlight_selection(timer)
return
endif
let w:visual_match_ids = []
if !exists('w:visual_match_ids')
let w:visual_match_ids = {}
endif
" Add match to all windows containing the current buffer
" NOTE: \%V\@! prevents the pattern from matching the current selection. As
" it is highlighted already this would be superfluous and inefficient.
" NOTE: This does not delete the matches for windows that do not exist
" anymore, but I don't think that this is an issue and
" clear_highlights deletes them later on mode change.
for l:win in win_findbuf(bufnr())
let w:visual_match_ids += [[
if exists("w:visual_match_ids[l:win]")
call matchdelete(w:visual_match_ids[l:win], l:win)
endif
" NOTE: \%V\@! prevents the pattern from matching the current selection.
" As it is highlighted already this would be superfluous and
" inefficient.
let w:visual_match_ids[l:win] =
\ matchadd(
\ 'CursorColumn',
\ '\V\%V\@!' . substitute(escape(@", '\'), '\n', '\\n', 'g'),
\ -1,
\ -1,
\ {'window': l:win}),
\ l:win
\ ]]
\ {'window': l:win})
endfor
call setreg('"', l:old_reg, l:old_regtype)
@@ -163,9 +172,7 @@ function! s:clear_highlights(what = s:CLEAR_HIGHS_ALL)
endif
if and(a:what, s:CLEAR_HIGHS_VISUAL)
if exists('w:visual_match_ids')
for l:pairs in w:visual_match_ids
let l:id = l:pairs[0]
let l:win = l:pairs[1]
for [l:win, l:id] in items(w:visual_match_ids)
call matchdelete(l:id, l:win)
endfor
unlet w:visual_match_ids