From dceac6c2bc7dbf3fea172c4f8c29159b117fe4dd Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Sat, 14 Jul 2018 00:26:25 +1200
Subject: Use .= for b:undo_ftplugin appending

---
 after/ftplugin/diff/prune.vim | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/after/ftplugin/diff/prune.vim b/after/ftplugin/diff/prune.vim
index 185d04f..53e05cb 100644
--- a/after/ftplugin/diff/prune.vim
+++ b/after/ftplugin/diff/prune.vim
@@ -17,19 +17,16 @@ endif
 
 " Flag as loaded
 let b:did_ftplugin_diff_prune = 1
-let b:undo_ftplugin = b:undo_ftplugin
-      \ . '|unlet b:did_ftplugin_diff_prune'
+let b:undo_ftplugin .= '|unlet b:did_ftplugin_diff_prune'
 
 " Define normal mode mapping target
 nnoremap <buffer> <silent> <unique>
       \ <Plug>(DiffPrune)
       \ :<C-U>set operatorfunc=diff#prune#Prune<CR>g@
-let b:undo_ftplugin = b:undo_ftplugin
-      \ . '|nunmap <buffer> <Plug>(DiffPrune)'
+let b:undo_ftplugin .= '|nunmap <buffer> <Plug>(DiffPrune)'
 
 " Define visual mode mapping target
 vnoremap <buffer> <silent> <unique>
       \ <Plug>(DiffPrune)
       \ :<C-U>call diff#prune#Prune(visualmode())<CR>
-let b:undo_ftplugin = b:undo_ftplugin
-      \ . '|vunmap <buffer> <Plug>(DiffPrune)'
+let b:undo_ftplugin .= '|vunmap <buffer> <Plug>(DiffPrune)'
-- 
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