From 7f221867a0305ec92c76fe38e6d5f2c08814937b Mon Sep 17 00:00:00 2001
From: Hsu ShanHung <iscream.frank@hotmail.com>
Date: Mon, 24 Aug 2020 18:10:46 +0800
Subject: [PATCH] Delete the name-duplicating buffer before ceating a gist file
 buffer

If repeatly opening a same file on the vim-gist, vim-gist gives
the new buffer the same name  as previous buffer, without deleting
the opened buffer first. Then a `file E95` exception is thrown,
and vim-gist will echo error message `Gist contains binary`.

Probably corressponding issue report:
https://github.com/mattn/vim-gist/issues/220
---
 autoload/gist.vim | 1 +
 1 file changed, 1 insertion(+)

diff --git a/autoload/gist.vim b/autoload/gist.vim
index 7f803c6..89eb28a 100644
--- a/autoload/gist.vim
+++ b/autoload/gist.vim
@@ -450,6 +450,7 @@ function! s:GistGet(gistid, clipboard) abort
             endif
           endif
           setlocal noswapfile
+          silent! exec 'bdel' s:bufprefix.a:gistid.'/'.fnameescape(filename) 
           silent exec 'noautocmd file' s:bufprefix.a:gistid.'/'.fnameescape(filename)
         endif
         set undolevels=-1