From 7d9a3f0e8b1546c81e9a3591c416313f0dffd936 Mon Sep 17 00:00:00 2001
From: "Phil Runninger (mac)" <prunninger@vhtcx.com>
Date: Tue, 7 Aug 2018 18:13:40 -0400
Subject: [PATCH 1/2] Make sure the path to the bookmarks file exists before
 writing it.

---
 lib/nerdtree/bookmark.vim | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/nerdtree/bookmark.vim b/lib/nerdtree/bookmark.vim
index dd69ad05..55abc8c0 100644
--- a/lib/nerdtree/bookmark.vim
+++ b/lib/nerdtree/bookmark.vim
@@ -343,6 +343,12 @@ function! s:Bookmark.Write()
     for j in s:Bookmark.InvalidBookmarks()
         call add(bookmarkStrings, j)
     endfor
+
+    let path = fnamemodify(g:NERDTreeBookmarksFile, ':h')
+    if !isdirectory(path)
+        call mkdir(path, 'p')
+    endif
+
     call writefile(bookmarkStrings, g:NERDTreeBookmarksFile)
 endfunction
 

From f78cf63627dbed66f01c4eaba37c2e5e86315d41 Mon Sep 17 00:00:00 2001
From: "Phil Runninger (mac)" <prunninger@vhtcx.com>
Date: Sun, 9 Sep 2018 21:29:20 -0400
Subject: [PATCH 2/2] Instead of creating the bookmark file path, show error
 message.

This change puts the burden on the user to make sure
g:NERDTreeBookmarksFile is correctly set and the path it contains is
present and has the proper permissions. If this is not the case, an
error message is displayed. This is a better solution than to blindly
create the path, when it may actually be impossible to do so.
---
 lib/nerdtree/bookmark.vim | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/lib/nerdtree/bookmark.vim b/lib/nerdtree/bookmark.vim
index 55abc8c0..2e0aab02 100644
--- a/lib/nerdtree/bookmark.vim
+++ b/lib/nerdtree/bookmark.vim
@@ -344,12 +344,11 @@ function! s:Bookmark.Write()
         call add(bookmarkStrings, j)
     endfor
 
-    let path = fnamemodify(g:NERDTreeBookmarksFile, ':h')
-    if !isdirectory(path)
-        call mkdir(path, 'p')
-    endif
-
-    call writefile(bookmarkStrings, g:NERDTreeBookmarksFile)
+    try
+        call writefile(bookmarkStrings, g:NERDTreeBookmarksFile)
+    catch
+        call nerdtree#echoError("Failed to write bookmarks file. Make sure g:NERDTreeBookmarksFile points to a valid location.")
+    endtry
 endfunction
 
 " vim: set sw=4 sts=4 et fdm=marker: