Fix #443

lua/cmp/core.lua

@@ -207,17 +207,20 @@ core.autoindent = function(self, trigger_event, callback)
     return callback()
   end
 
+  -- Check prefix
   local cursor_before_line = api.get_cursor_before_line()
   local prefix = pattern.matchstr('[^[:blank:]]\\+$', cursor_before_line) or ''
-  if #prefix > 0 then
+  if #prefix == 0 then
+    return callback()
+  end
+
+  -- Scan indentkeys.
   for _, key in ipairs(vim.split(vim.bo.indentkeys, ',')) do
     if vim.tbl_contains({ '=' .. prefix, '0=' .. prefix }, key) then
       local release = self:suspend()
-        vim.schedule(function()
+      vim.schedule(function() -- Check autoindent already applied.
         if cursor_before_line == api.get_cursor_before_line() then
-            feedkeys.call(keymap.t('<Cmd>setlocal cindent<CR>'), 'n')
+          feedkeys.call(keymap.autoindent(), 'n', function()
-            feedkeys.call(keymap.t('<C-f>'), 'n')
-            feedkeys.call(keymap.t('<Cmd>setlocal %scindent<CR>'):format(vim.bo.cindent and '' or 'no'), 'n', function()
             release()
             callback()
           end)
@@ -228,7 +231,8 @@ core.autoindent = function(self, trigger_event, callback)
       return
     end
   end
-  end
+
+  -- indentkeys does not matched.
   callback()
 end
 

lua/cmp/utils/keymap.lua

@@ -90,6 +90,16 @@ keymap.backspace = function(count)
   return table.concat(keys, '')
 end
 
+---Create autoindent keys
+---@return string
+keymap.autoindent = function()
+  local keys = {}
+  table.insert(keys, keymap.t('<Cmd>setlocal indentkeys+=!^F<CR>'))
+  table.insert(keys, keymap.t('<C-f>'))
+  table.insert(keys, keymap.t('<Cmd>setlocal indentkeys=%s<CR>'):format(vim.bo.indentkeys))
+  return table.concat(keys, '')
+end
+
 ---Return two key sequence are equal or not.
 ---@param a string
 ---@param b string