fix(telescope): remove on_cmd option

close https://github.com/SpaceVim/SpaceVim/issues/4929

autoload/SpaceVim/layers/autocomplete.vim

@@ -322,6 +322,9 @@ function! SpaceVim#layers#autocomplete#config() abort
   endif
 
   "mapping
+  "
+  " 如果使用 nvim-cmp 作为补全引擎，那么 Tab 以及 Enter 快捷键的映射是在
+  " ./lua/config/nvim-cmp.lua 内设置。
   if s:tab_key_behavior ==# 'smart'
     if has('patch-7.4.774')
       imap <silent><expr><TAB> SpaceVim#mapping#tab()

autoload/SpaceVim/layers/telescope.vim

@@ -50,11 +50,11 @@ endfunction
 function! SpaceVim#layers#telescope#plugins() abort
   let plugins = []
   if  has('nvim-0.10.0')
-    call add(plugins, [g:_spacevim_root_dir . 'bundle/telescope.nvim-0.1.8', {'merged' : 0, 'loadconf' : 1, 'on_cmd' : ['Telescope']}])
+    call add(plugins, [g:_spacevim_root_dir . 'bundle/telescope.nvim-0.1.8', {'merged' : 0, 'loadconf' : 1}])
   elseif  has('nvim-0.7.2')
-    call add(plugins, [g:_spacevim_root_dir . 'bundle/telescope.nvim-0.1.5', {'merged' : 0, 'loadconf' : 1, 'on_cmd' : ['Telescope']}])
+    call add(plugins, [g:_spacevim_root_dir . 'bundle/telescope.nvim-0.1.5', {'merged' : 0, 'loadconf' : 1}])
   elseif has('nvim-0.7.0')
-    call add(plugins, [g:_spacevim_root_dir . 'bundle/telescope.nvim-0.1.2', {'merged' : 0, 'loadconf' : 1, 'on_cmd' : ['Telescope']}])
+    call add(plugins, [g:_spacevim_root_dir . 'bundle/telescope.nvim-0.1.2', {'merged' : 0, 'loadconf' : 1}])
   endif
   call add(plugins, [g:_spacevim_root_dir . 'bundle/plenary.nvim', {'merged' : 0}])
   call add(plugins, [g:_spacevim_root_dir . 'bundle/telescope-menu', {'merged' : 0}])

lua/config/nvim-cmp.lua

@@ -43,7 +43,12 @@ end
 
 local function enter(f) -- {{{
   if copt.auto_completion_return_key_behavior == 'complete' then
-    cmp.mapping.confirm({ select = false })
+    if cmp.visible() then
+      cmp.mapping.confirm({ select = false })
+      return cmp.close()
+    else
+      pcall(f)
+    end
   elseif copt.auto_completion_return_key_behavior == 'smart' then
     expand_snippet(nil)
     if cmp.visible() then