vim-vinegar pollutes numbered register history when using '-'

[andrewferrier]

I have seen an issue for some time where spurious entries get inserted into the numbered registers in vim, and I just realized that (it seems) it's vim-vinegar which is doing it, when moving 'up' through directories.

Observed behaviour/recreation instructions:

• Install a recent version of vim (I'm using VIM - Vi IMproved 8.2 (2019 Dec 12, compiled Feb 09 2021 23:51:55) Included patches: 1-2489, Compiled by Arch Linux). However, I've also seen this happen with NeoVim 0.5 too. Doesn't seem to be that version-specific.

• Empty out ~/.vim/

• Clone vim-vinegar into ~/.vim/pack/pack/start/.

• Start vim with a scratchpad text file containing some existing content.

• Move to any line, and delete it using dd.

• Save the file with :w. Type :registers and observe that the deleted line is in the "1 register.

• Press - to have vim-vinegar navigate to the containing directory.

• Type :registers and observe that the the value has been pushed down to the "4 register. "1 now contains ../, "2 now contains ./, "3 is now empty.

Expected behaviour:

• Registers should not be touched by navigating through directories.

Thanks for all your great work on vim-vinegar and the other plugins you maintain. I use them daily!

[tpope]

I see this on :e %h too. It's netrw. (It's always netrw.)