dont clobber &cpo

doc/NERD_tree.txt

@@ -899,6 +899,9 @@ fridge for later ;)
 ==============================================================================
 7. Changelog                                               *NERDTreeChangelog*
 
+2.xx.xx
+    - dont clobber &cpo. Thanks to godlygeek for the bug report.
+
 2.14.0
     - fix a bug where the <c-w>o mapping  would cause the tree window to be
       incorrectly sized when reopened.
@@ -1220,6 +1223,8 @@ NERDTreeQuitOnOpen was set.
 Thanks to Charlton Wang for reporting bugs with the 'o' mapping and with
 handling named pipes.
 
+Chur to godlygeek for reporting a bug where &cpo was getting clobbered.
+
 ==============================================================================
 9. License                                                   *NERDTreeLicense*
 

plugin/NERD_tree.vim

@@ -22,6 +22,11 @@ if v:version < 700
     finish
 endif
 let loaded_nerd_tree = 1
+
+"for line continuation - i.e dont want C in &cpo
+let s:old_cpo = &cpo
+set cpo&vim
+
 "Function: s:initVariable() function {{{2
 "This function is used to initialise a given variable to a given value. The
 "variable is only initialised if it does not exist prior
@@ -1828,9 +1833,6 @@ function! s:createTreeWin()
     endif
 
 
-    " for line continuation
-    let cpo_save1 = &cpo
-    set cpo&vim
 
     call s:bindMappings()
     setfiletype nerdtree
@@ -3527,4 +3529,8 @@ function! s:upDir(keepState)
     endif
 endfunction
 
+
+"reset &cpo back to users setting
+let &cpo = s:old_cpo
+
 " vim: set sw=4 sts=4 et fdm=marker: