Solve expression manually

lua/cmp/utils/keymap.lua

@@ -186,6 +186,8 @@ keymap.feed_map = function(map)
     rhs = keymap.t(map.rhs)
   end
 
+  rhs = keymap.expression(rhs)
+
   if map.noremap then
     vim.api.nvim_feedkeys(rhs, 'itn', true)
   else
@@ -225,4 +227,27 @@ misc.set(_G, { 'cmp', 'utils', 'keymap', 'set_map' }, function(id)
   return keymap.set_map.callbacks[id]() or ''
 end)
 
+---Resolve expression.
+---@param expr string
+---@return string
+keymap.expression = function(expr)
+  local spans = {}
+  local f = 0
+  for i = 1, #expr do
+    local c = string.sub(expr, i, i)
+    if f == 0 and c == keymap.t('<C-r>') then
+      f = i
+    end
+    if f ~= 0 and c == keymap.t('<CR>') then
+      table.insert(spans, { s = f, e = i })
+      f = 0
+    end
+  end
+  for i = #spans, 1, -1 do
+    local s, e = spans[i].s, spans[i].e
+    expr = string.sub(expr, 1, s - 1) .. keymap.expression(vim.api.nvim_eval(string.sub(expr, s + 2, e - 1))) .. string.sub(expr, e + 1)
+  end
+  return expr
+end
+
 return keymap