Closing buffer when changing files with NerdTree

Question

I am using NVIM v0.7.2 on Arch Linux. Right now I got a problem with the plugins vim-easycomplete and nerdtree.

When I operate on one file and open another one, the first file stays in the buffer. On usual occasion, this wouldn't be a problem because I would move back and forth between the files when working on project. In my case as I'm doing the rust-lang/rustlings-course right now, I finish a task and continue with the next one, so after some time I got several buffers open.

The problem is that with each buffer because of vim-easycomplete, a new instance of rust-analyzer (language-server) attaches to a buffer. With several file open and only 8Gigs of RAM available, my memory gets eaten up fastly...

So my question is: is there a way to close the when opening a new file with NerdTree?

Thank you for reading!

EDIT: I've observed my memory usage a little more and it turned out that the high memory usage came from multiple instances of TabNine which is supported by vim-easycomplete. I turned it off with let g:easycomplete_tabnine_enable = 0 which is a work-around.

Answer 1

You can use:

• List all current buffers: :buffers
• Delete all open buffers: :%bd!
• Delete a specific buffer: :bdelete <filename>
• Delete buffer number 1: :1bd
• Delete buffers from ranges 1 to 4: :1,4bd

You can also map command! BufOnly execute '%bd|edit #|normal `" in your .vimrc to delete all other buffers except the one you are currently working on. Let me know if this helps!