fix(#1303): TextChanged should update completion only on text added

Author: litoj

lua/cmp/init.lua

@@ -372,7 +372,22 @@ local on_text_changed = function()
     cmp.core:on_change('TextChanged')
   end
 end
-autocmd.subscribe({ 'TextChangedI', 'TextChangedP' }, on_text_changed)
+local lp = { 0, 0, buf = 0 }
+autocmd.subscribe({ 'TextChangedI', 'TextChangedP' }, function(s)
+  local pos = vim.api.nvim_win_get_cursor(0)
+  pos.buf = s.buf
+  if
+    s.buf ~= lp.buf -- same buf
+    or not (lp[1] == pos[1] and lp[2] + 1 == pos[2]) -- same line
+    or not (lp[1] + 1 == pos[1] and lp[2] == 0) -- beginning of next line
+  then
+    lp = pos
+    return
+  else
+    lp = pos
+    on_text_changed()
+  end
+end)
 autocmd.subscribe('CmdlineChanged', async.debounce_next_tick(on_text_changed))
 
 autocmd.subscribe('CursorMovedI', function()

lua/cmp/utils/autocmd.lua

@@ -10,15 +10,15 @@ local function create_autocmd(event)
   vim.api.nvim_create_autocmd(event, {
     desc = ('nvim-cmp: autocmd: %s'):format(event),
     group = autocmd.group,
-    callback = function()
-      autocmd.emit(event)
+    callback = function(state)
+      autocmd.emit(event, state)
     end,
   })
 end
 
 ---Subscribe autocmd
 ---@param events string|string[]
----@param callback function
+---@param callback fun(state:vim.api.keyset.create_autocmd.callback_args)
 ---@return function
 autocmd.subscribe = function(events, callback)
   events = type(events) == 'string' and { events } or events
@@ -45,12 +45,13 @@ end
 
 ---Emit autocmd
 ---@param event string
-autocmd.emit = function(event)
+---@param state vim.api.keyset.create_autocmd.callback_args
+autocmd.emit = function(event, state)
   debug.log(' ')
   debug.log(string.format('>>> %s', event))
   autocmd.events[event] = autocmd.events[event] or {}
   for _, callback in ipairs(autocmd.events[event]) do
-    callback()
+    callback(state)
   end
 end