Moving a file with NERDTreeAutoDeleteBuffer=1 results in the file type being removed and breaks syntax highlighting

[nickjj]

Self-Diagnosis

• I have searched the issues for an answer to my question.
• I have reviewed the NERDTree documentation. :h NERDTree
• I have reviewed the Wiki.
• I have searched the web for an answer to my question.

Environment (for bug reports)

• Operating System: Ubuntu 18.04 (LTS)
• Vim/Neovim version: VIM - Vi IMproved 8.0
• NERDTree version, found on 1st line in NERDTree quickhelp ?: 6.3.0
• vimrc settings
  • NERDTree variables

  let g:NERDTreeShowHidden=1
  let g:NERDTreeAutoDeleteBuffer=1

  • Other NERDTree-dependent Plugins
    • jistr/vim-nerdtree-tabs
    • ryanoasis/vim-devicons
    • tiagofumo/vim-nerdtree-syntax-highlight
    • Xuyuanp/nerdtree-git-plugin
    • [] Others (specify):
  • I've verified the issue occurs with only NERDTree installed.

Steps to Reproduce the Issue

1. echo "## Hello" > /tmp/a.md
2. vim /tmp/a.md
3. Toggle NERDTree open and select the file
4. mm to move the file
5. Change the file name from a.md to b.md

Current Result (Include screenshots where appropriate.)

The buffer correctly switches to b.md but the file type has been removed which in turn removes the syntax highlighting.

Now we need to run either set ft=markdown or :e manually and things work again.

Expected Result

The buffer would have b.md open with the file type set to Markdown which in turn has correct syntax highlighting without having to manually do anything extra.

[normenmueller]

Environment (for bug reports)

• Operating System: macOS 10.15.2

• Vim/Neovim version: VIM - Vi IMproved 8.1

• NERDTree version, found on 1st line in NERDTree quickhelp ?: 6.4.1

• vimrc settings

  • NERDTree variables

  let g:NERDTreeChDirMode = 2
  let g:NERDTreeIgnore = ['\~$']
  let g:NERDSpaceDelims = 1

  • Other NERDTree-dependent Plugins

    • jistr/vim-nerdtree-tabs
    • ryanoasis/vim-devicons
    • tiagofumo/vim-nerdtree-syntax-highlight
    • Xuyuanp/nerdtree-git-plugin
    • [] Others (specify):

  • I've verified the issue occurs with only NERDTree installed.

Steps to Reproduce the Issue

1. echo "## Hello" > /tmp/a.md
2. vim /tmp/a.md
3. Toggle NERDTree open and select the file
4. mm to move the file
5. Change the file name from a.md to b.md

Current Result (Include screenshots where appropriate.)

The buffer correctly switches to b.md but the file type has been removed which in turn removes the syntax highlighting.

In my case "Now we need to run either set ft=markdown or :e manually and things work again." does not work. I've to restart Vim. No other chance to re-enable syntax highlighting.

Expected Result

The buffer would have b.md open with the file type set to Markdown which in turn has correct syntax highlighting without having to manually do anything extra.

[nickjj]

@normenmueller you need to likely set let g:NERDTreeAutoDeleteBuffer=1, otherwise the old buffer stays open.

[normenmueller]

@nickjj Will try, but I also have the problem that the highlighting is disabled in case of creating a new file by ma.

[normenmueller]

@nickjj Even with let g:NERDTreeAutoDeleteBuffer=1 it does not work. And still, even creating a new file disables highlighting completely.

[nickjj]

I'm not sure, you may want to open a different issue. This one is dedicated to the exact bug listed in my original post.

[normenmueller]

I'm not sure, you may want to open a different issue. This one is dedicated to the exact bug listed in my original post.

Done: #1070