fix: Outdated completion item with mini.snippets (#2126)

* fix: Outdated completion item with mini.snippets

* fix: Outdated completion item with mini.snippets. Prevent completion suggestions directly after snippet expand

* fix: Outdated completion item with mini.snippets. Undo changes

* fix: Outdated completion item with mini.snippets. The cmp.resubscribe solution

---------

Co-authored-by: abeldekat <abel@nomail.com>

lua/cmp/init.lua

@@ -328,6 +328,12 @@ cmp.status = function()
   end
 end
 
+---Ensures that cmp is the last receiver of the events specified.
+---@param events string[]
+cmp.resubscribe = function(events)
+  autocmd.resubscribe(events)
+end
+
 ---@type cmp.Setup
 cmp.setup = setmetatable({
   global = function(c)

lua/cmp/utils/autocmd.lua

@@ -6,6 +6,16 @@ autocmd.group = vim.api.nvim_create_augroup('___cmp___', { clear = true })
 
 autocmd.events = {}
 
+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)
+    end,
+  })
+end
+
 ---Subscribe autocmd
 ---@param events string|string[]
 ---@param callback function
@@ -16,13 +26,7 @@ autocmd.subscribe = function(events, callback)
   for _, event in ipairs(events) do
     if not autocmd.events[event] then
       autocmd.events[event] = {}
-      vim.api.nvim_create_autocmd(event, {
-        desc = ('nvim-cmp: autocmd: %s'):format(event),
-        group = autocmd.group,
-        callback = function()
-          autocmd.emit(event)
-        end,
-      })
+      create_autocmd(event)
     end
     table.insert(autocmd.events[event], callback)
   end
@@ -50,4 +54,24 @@ autocmd.emit = function(event)
   end
 end
 
+---Resubscribe to events
+---@param events string[]
+autocmd.resubscribe = function(events)
+  -- Delete the autocommands if present
+  local found = vim.api.nvim_get_autocmds({
+    group = autocmd.group,
+    event = events,
+  })
+  for _, to_delete in ipairs(found) do
+    vim.api.nvim_del_autocmd(to_delete.id)
+  end
+
+  -- Recreate if event is known
+  for _, event in ipairs(events) do
+    if autocmd.events[event] then
+      create_autocmd(event)
+    end
+  end
+end
+
 return autocmd