Add complete_done event and improved the recently_used sorter.

Fix #708

doc/cmp.txt

@@ -209,6 +209,7 @@ NOTE: You can call these functions in mapping via `<Cmd>lua require('cmp').compl
 *cmp.event:on* ('%EVENT_NAME%, callback)
   Subscribe nvim-cmp's events below.
 
+  - `complete_done`: emit after current completion is done.
   - `confirm_done`: emit after confirmation is done.
 
 

lua/cmp/core.lua

@@ -34,6 +34,9 @@ core.new = function()
   self.view.event:on('keymap', function(...)
     self:on_keymap(...)
   end)
+  self.view.event:on('complete_done', function(evt)
+    self.event:emit('complete_done', evt)
+  end)
   return self
 end
 
@@ -425,7 +428,9 @@ core.confirm = function(self, e, option, callback)
   feedkeys.call('', 'n', function()
     e:execute(vim.schedule_wrap(function()
       release()
-      self.event:emit('confirm_done', e)
+      self.event:emit('confirm_done', {
+        entry = e
+      })
       if callback then
         callback()
       end

lua/cmp/init.lua

@@ -308,8 +308,16 @@ autocmd.subscribe('CursorMoved', function()
   end
 end)
 
-cmp.event:on('confirm_done', function(e)
-  cmp.config.compare.recently_used:add_entry(e)
+cmp.event:on('complete_done', function(evt)
+  if evt.entry then
+    cmp.config.compare.recently_used:add_entry(evt.entry)
+  end
+end)
+
+cmp.event:on('confirm_done', function(evt)
+  if evt.entry then
+    cmp.config.compare.recently_used:add_entry(evt.entry)
+  end
 end)
 
 return cmp

lua/cmp/view.lua

@@ -109,8 +109,11 @@ view.open = function(self, ctx, sources)
     end
   end
 
-  -- close.
+  -- complete_done.
   if #entries == 0 then
+    self.event:emit('complete_done', {
+      entry = self:_get_entries_view():get_selected_entry()
+    })
     self:close()
   end
 end