From c63674fb7db8bbd4c2f885070f4e62befa9afa8a Mon Sep 17 00:00:00 2001
From: jayli <bachi@taobao.com>
Date: Thu, 21 Dec 2023 10:14:11 +0800
Subject: [PATCH] bugfix for #282

---
 autoload/easycomplete.vim       | 18 +++---------------
 autoload/easycomplete/popup.vim |  2 +-
 2 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/autoload/easycomplete.vim b/autoload/easycomplete.vim
index 3d825324..17d5cc07 100644
--- a/autoload/easycomplete.vim
+++ b/autoload/easycomplete.vim
@@ -650,35 +650,23 @@ function! s:BackingCompleteHandler()
       let g:easycomplete_stunt_menuitems = s:GetCompleteCache(s:GetTypingWordByGtx())['menu_items']
       let start_pos = col('.') - strlen(s:GetTypingWordByGtx())
       let result = g:easycomplete_stunt_menuitems[0 : g:easycomplete_maxlength]
-      call s:StopAsyncRun()
-      call s:AsyncRun(function("s:complete"), [start_pos, result], 0)
+      noa silent! call complete(start_pos, result)
     endif
   endif
 endfunction
 
 function! easycomplete#BackSpace()
+  return "\<C-H>"
   if pumvisible()
-    " backspace 都会关闭 pum，这里尽量避免关闭 pum 带来的闪烁
     let l:items = complete_info()["items"]
     let l:startcol = get(g:easycomplete_firstcomplete_ctx, "startcol", 0)
     if l:startcol != 0 && l:startcol < col('.') - 1
-      call s:StopAsyncRun()
-      call s:AsyncRun(function("s:RemainPumWhileBS"), [l:startcol, l:items], 0)
+      " call s:CreateShadowWindow()
     endif
   endif
   return "\<C-H>"
 endfunction
 
-function! s:RemainPumWhileBS(startcol, items)
-  if !(&completeopt =~ "noselect")
-    setlocal completeopt+=noselect
-    silent noa call s:SimpleComplete(a:startcol, a:items)
-    setlocal completeopt-=noselect
-  else
-    silent noa call s:SimpleComplete(a:startcol, a:items)
-  endif
-endfunction
-
 " 正常输入和退格监听函数
 " for firstcompele typing and back typing
 function! easycomplete#typing()
diff --git a/autoload/easycomplete/popup.vim b/autoload/easycomplete/popup.vim
index 6ff4f459..4664f016 100644
--- a/autoload/easycomplete/popup.vim
+++ b/autoload/easycomplete/popup.vim
@@ -475,7 +475,7 @@ function! s:NVimShow(opt, windowtype, float_type)
   endif
   silent noa let winid = nvim_open_win(s:buf[a:windowtype], v:false, winargs[2])
   let g:easycomplete_popup_win[a:windowtype] = winid
-  if has('nvim-0.10.0')
+  if exists("*nvim_win_set_option")
     call nvim_win_set_option(winid, 'winhl', 'Normal:Pmenu,NormalNC:Pmenu')
   endif
   if exists('*nvim_win_set_config')