Fix #89

lua/cmp/utils/keymap.lua

@@ -1,4 +1,5 @@
 local misc = require('cmp.utils.misc')
+local str = require('cmp.utils.str')
 local cache = require('cmp.utils.cache')
 
 local keymap = {}
@@ -130,7 +131,7 @@ keymap.listen = setmetatable({
       existing = existing,
       callback = callback,
     })
-    vim.api.nvim_buf_set_keymap(0, mode, keys, ('v:lua.cmp.utils.keymap.expr("%s", "%s")'):format(mode, keymap.escape(keys)), {
+    vim.api.nvim_buf_set_keymap(0, mode, keys, ('v:lua.cmp.utils.keymap.expr("%s", "%s")'):format(mode, str.escape(keymap.escape(keys), { '"' })), {
       expr = true,
       nowait = true,
       noremap = true,

lua/cmp/utils/str.lua

@@ -156,6 +156,26 @@ str.oneline = function(text)
   return text
 end
 
+---Escape special chars
+---@param text string
+---@param chars string[]
+---@return string
+str.escape = function(text, chars)
+  table.insert(chars, '\\')
+  local escaped = {}
+  local i = 1
+  while i <= #text do
+    local c = string.sub(text, i, i)
+    if vim.tbl_contains(chars, c) then
+      table.insert(escaped, '\\')
+      table.insert(escaped, c)
+    else
+      table.insert(escaped, c)
+    end
+    i = i + 1
+  end
+  return table.concat(escaped, '')
+end
+
 return str
 
-

lua/cmp/utils/str_spec.lua

@@ -21,6 +21,13 @@ describe('utils.str', function()
     assert.are.equal(str.remove_suffix('log()${0:placeholder}', '${0}'), 'log()${0:placeholder}')
   end)
 
+  it('escape', function()
+    assert.are.equal(str.escape('plain', {}), 'plain')
+    assert.are.equal(str.escape('plain\\', {}), 'plain\\\\')
+    assert.are.equal(str.escape('plain\\"', {}), 'plain\\\\"')
+    assert.are.equal(str.escape('pla"in', { '"' }), 'pla\\"in')
+  end)
+
 end)