NERDTree keeps 'No Name' buffer after deleting current node 'md'

[mboughaba]

To assist in resolving your issue, provide as much information as possible, in place of the ellipses (…) below.

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Environment: Describe your Vim/NERDTree setup.

• Operating System: Archlinux, Linux Opensuse and Window 7
• GVim version :version: 8.0 Included patch 1-69
• Vim version :version: 8.0 Included patch 1-2
• NERDTree version git rev-parse --short HEAD: f554c20
• NERDTree settings applied in your vimrc, if any:
  let NERDTreeWinPos = "left"
  let NERDTreeWinSize = 35
  let NERDTreeIgnore = ['.job$', '^CVS$', '.orig', '.log$']
  let g:NERDTreeDirArrows = 0
  let g:NERDTreeStatusline = "%f"
  let g:NERDTreeDirArrowExpandable = ''
  let g:NERDTreeDirArrowCollapsible = ''

Process: List the steps that will recreate the issue.

0. Open several buffers from the tree
1. Delete one file from the tree using md
   NERDTree ask for confirmation to delete the file and delete the associated buffer if open
2. confirm delete file and buffer with 'y'

Current Result: Describe what you you currently experience from this process.

Buffer is actually deleted but it remains open as 'No Name'

To completely remove residue buffer one should call ':Bdelete'

/!\ I tested (re) this several time before submitting the issue and notice that sometime:

• residue buffer is replaced with newly open file
• If deleted buffer was the first one to be opened it will be removed completely without leaving any residue buffer
• This is occurring only if the file to be deleted is the currently active buffer

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Optional

Screenshot(s):

Possible Fix: (Have you poked around in the code?)
The setting below doesn't affect the results.

"Automatically delete the buffer after deleting or renaming a file
if !exists("g:NERDTreeAutoDeleteBuffer")
  let g:NERDTreeAutoDeleteBuffer = 0
endif

There is one function to be reviewed

function! s:promptToDelBuffer(bufnum, msg)

I think the issue will be solved by changin the line below in s:promptToDelBuffer:

• from

exec "tabdo windo if winbufnr(0) == " . a:bufnum . " | exec ':enew! ' | endif"

• to

exec "tabdo windo if winbufnr(0) == " . a:bufnum . " | exec ':bnext! ' | endif"