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perf(extui): delay creating windows, buffers and parser (#34665)

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Problem:  vim._extui unconditionally creates windows, buffers and the
          Vimscript cmdline highlighter when it is first loaded.
Solution: Schedule first creation of the window so that first redraw
          happens sooner (still need to create at least the cmdline
          window asap as it can have a different highlight through
          hl-MsgArea; thus further delaying until the first event that
          needs a particular target seems redundant). Load the cmdline
          highlighter on the first cmdline_show event.
This commit is contained in:
luukvbaal
2025-06-27 15:54:32 +02:00
committed by GitHub
parent 64753b5c37
commit bfe42c84de
5 changed files with 40 additions and 46 deletions
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45
runtime/lua/vim/_extui.lua
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@@ -40,7 +40,7 @@ local M = {}
local function ui_callback(event, ...)
local handler = ext.msg[event] or ext.cmd[event]
ext.tab_check_wins()
ext.check_targets()
handler(...)
api.nvim__redraw({
flush = handler ~= ext.cmd.cmdline_hide or nil,
@@ -99,44 +99,37 @@ function M.enable(opts)
-- dependent on some option values. Reconfigure windows when option value
-- has changed and after VimEnter when the user configured value is known.
-- TODO: Reconsider what is needed when this module is enabled by default early in startup.
local function check_opt(name, value)
if name == 'cmdheight' then
-- 'cmdheight' set; (un)hide cmdline window and set its height.
local cfg = { height = math.max(value, 1), hide = value == 0 }
api.nvim_win_set_config(ext.wins.cmd, cfg)
-- Change message position when 'cmdheight' was or becomes 0.
if value == 0 or ext.cmdheight == 0 then
ext.cfg.msg.target = value == 0 and 'msg' or 'cmd'
ext.msg.prev_msg = ''
end
ext.cmdheight = value
local function check_cmdheight(value)
ext.check_targets()
-- 'cmdheight' set; (un)hide cmdline window and set its height.
local cfg = { height = math.max(value, 1), hide = value == 0 }
api.nvim_win_set_config(ext.wins.cmd, cfg)
-- Change message position when 'cmdheight' was or becomes 0.
if value == 0 or ext.cmdheight == 0 then
ext.cfg.msg.target = value == 0 and 'msg' or 'cmd'
ext.msg.prev_msg = ''
end
ext.cmdheight = value
end
ext.tab_check_wins()
check_opt('cmdheight', vim.o.cmdheight)
vim.schedule(function()
check_cmdheight(vim.o.cmdheight)
end)
api.nvim_create_autocmd('OptionSet', {
group = ext.augroup,
pattern = { 'cmdheight' },
callback = function(ev)
ext.tab_check_wins()
check_opt(ev.match, vim.v.option_new)
callback = function()
check_cmdheight(vim.v.option_new)
ext.msg.set_pos()
end,
desc = 'Set cmdline and message window dimensions for changed option values.',
})
api.nvim_create_autocmd({ 'VimEnter', 'VimResized', 'TabEnter' }, {
api.nvim_create_autocmd({ 'VimResized', 'TabEnter' }, {
group = ext.augroup,
callback = function(ev)
ext.tab_check_wins()
if ev.event == 'VimEnter' then
check_opt('cmdheight', vim.o.cmdheight)
end
ext.msg.set_pos()
end,
desc = 'Set extui window dimensions after startup, shell resize or tabpage change.',
callback = ext.msg.set_pos,
desc = 'Set cmdline and message window dimensions after shell resize or tabpage change.',
})
api.nvim_create_autocmd('WinEnter', {