Fix #699 Fix #705 Fix #698

lua/cmp/utils/keymap.lua

@@ -122,8 +122,9 @@ keymap.get_mapping = function(mode, lhs)
     if keymap.equals(map.lhs, lhs) then
       return {
         lhs = map.lhs,
-        rhs = map.rhs,
+        rhs = map.rhs or '',
         expr = map.expr == 1,
+        callback = map.callback,
         noremap = map.noremap == 1,
         script = map.script == 1,
         silent = map.silent == 1,
@@ -137,8 +138,9 @@ keymap.get_mapping = function(mode, lhs)
     if keymap.equals(map.lhs, lhs) then
       return {
         lhs = map.lhs,
-        rhs = map.rhs,
+        rhs = map.rhs or '',
         expr = map.expr == 1,
+        callback = map.callback,
         noremap = map.noremap == 1,
         script = map.script == 1,
         silent = map.silent == 1,
@@ -152,6 +154,7 @@ keymap.get_mapping = function(mode, lhs)
     lhs = lhs,
     rhs = lhs,
     expr = false,
+    callback = nil,
     noremap = true,
     script = false,
     silent = false,
@@ -172,7 +175,19 @@ keymap.evacuate = function(bufnr, mode, lhs)
   end
 
   -- Keep existing mapping as <Plug> mapping. We escape fisrt recursive key sequence. See `:help recursive_mapping`)
-  local rhs = map.rhs
+  local rhs, callback = '', nil
+  if map.callback then
+    callback = function(...)
+      local keys = map.callback(...)
+      if map.noremap then
+        return keys
+      end
+
+      vim.api.nvim_feedkeys(keymap.t(keymap.recursive(bufnr, mode, lhs, keys)), 'i', true)
+      return keymap.t('<Ignore>')
+    end
+  else
+    rhs = map.rhs
     if not map.noremap and map.expr then
       -- remap & expr mapping should evacuate as <Plug> mapping with solving recursive mapping.
       rhs = function()
@@ -196,11 +211,13 @@ keymap.evacuate = function(bufnr, mode, lhs)
       -- noremap & non-expr mapping doesn't need to evacuate.
       return { keys = rhs, mode = 'it' .. (map.noremap and 'n' or '') }
     end
+  end
 
   local fallback = ('<Plug>(cmp.utils.keymap.evacuate:%s)'):format(map.lhs)
   keymap.set_map(bufnr, mode, fallback, rhs, {
     expr = map.expr,
     noremap = map.noremap,
+    callback = callback,
     script = map.script,
     silent = mode ~= 'c', -- I can't understand but it solves the #427 (wilder.nvim's mapping does not work if silent=true in cmdline mode...)
   })