Fix #220

lua/cmp/utils/keymap.lua

@@ -49,6 +49,37 @@ keymap.to_keymap = function(s)
   end)
 end
 
+---Return two key sequence are equal or not.
+---@param a string
+---@param b string
+---@return boolean
+keymap.equals = function(a, b)
+  return keymap.to_upper(a) == keymap.to_upper(b)
+end
+
+---Return upper case key sequence.
+---@param keys string
+---@return string
+keymap.to_upper = function(keys)
+  local result = {}
+  local ctrl = false
+  for i = 1, #keys do
+    local c = string.sub(keys, i, i)
+    if c == '<' then
+      table.insert(result, c)
+      ctrl = true
+    elseif ctrl and c ~= '>' then
+      table.insert(result, string.upper(c))
+    elseif ctrl and c == '>' then
+      table.insert(result, c)
+      ctrl = false
+    else
+      table.insert(result, c)
+    end
+  end
+  return table.concat(result, '')
+end
+
 ---Feedkeys with callback
 keymap.feedkeys = setmetatable({
   callbacks = {},
@@ -90,7 +121,7 @@ keymap.listen = setmetatable({
   cache = cache.new(),
 }, {
   __call = function(self, mode, keys, callback)
-    keys = keymap.to_keymap(keys)
+    keys = keymap.to_upper(keymap.to_keymap(keys))
 
     local existing = keymap.find_map_by_lhs(mode, keys)
     if string.match(existing.rhs, '^.*' .. vim.pesc('v:lua.cmp.utils.keymap.listen.run') .. '.*$') then
@@ -161,18 +192,22 @@ end
 ---@return table
 keymap.find_map_by_lhs = function(mode, lhs)
   for _, map in ipairs(vim.api.nvim_buf_get_keymap(0, mode)) do
-    if map.lhs == lhs then
+    if keymap.equals(map.lhs, lhs) then
+      map.lhs = keymap.to_upper(map.lhs)
+      map.rhs = keymap.to_upper(map.rhs)
       return map
     end
   end
   for _, map in ipairs(vim.api.nvim_get_keymap(mode)) do
-    if map.lhs == lhs then
+    if keymap.equals(map.lhs, lhs) then
+      map.lhs = keymap.to_upper(map.lhs)
+      map.rhs = keymap.to_upper(map.rhs)
       return map
     end
   end
   return {
-    lhs = lhs,
-    rhs = lhs,
+    lhs = keymap.to_upper(lhs),
+    rhs = keymap.to_upper(lhs),
     expr = 0,
     script = 0,
     noremap = 1,