I am starting to use Neovim and in the process of configuring the text editor. While doing some test I found that every time I try to open a file using the :Ex command I get the error:

Error detected while processing function <SNR>28_NetrwBrowseChgDir
line  172:
E471: Argument required: keepj keepalt 2wincmd 1

Only if I previously had used the :Lexplore command.

I have no idea why this happens neither how to solve it, so I appreciate all the feedback you can give me.

  • 1
    This sounds like a bug in netrw. Please file a report with Dr Chip or on theVim repository
    – D. Ben Knoble
    Sep 5, 2023 at 15:44
  • @D.BenKnoble shouldn't I report to the neovim repository, I don't know what those two are?
    – Educpf
    Sep 6, 2023 at 13:05
  • 1
    No: Netrw is the plugin that ships with Vim and provides the :Explore family of commands. (I didn't realize Neovim even still shipped Netrw, actually. They mostly copy over stuff like that from Vim, though.) Dr. Chip is the maintainer. Try :edit $VIMRUNTIME/plugin/netrwPlugin.vim or :help pi_netrw for contact info.
    – D. Ben Knoble
    Sep 6, 2023 at 15:20
  • 1
    @D.BenKnoble Damn, you really do know a lot! I really appreciate your help. Thank you for sharing your knowledge!
    – Educpf
    Sep 6, 2023 at 21:56

1 Answer 1


I stumbled upon that issue too. It seems to me that with 99% its Lex bug. I switched to Vex + some tunning and that works fine. With Lex I couldn't make Ex open files after Lex =\

Update 2. Sorry. New observations) I made full analogue of Lex with Vex and .... is start behave like Lex. More inspections lead me to -- vim.g.netrw_browse_split = 4. Exactly this thing make all this work wrong. If you can normally handle it (like I'm trying right now) I suppose you can I achieve this sfuff working.

Update 3. Yes it works. If when I open Lex/Vex I set vim.g.netrw_browse_split = 4, but when I open Ex revert it to default vim.g.netrw_browse_split = 0 all works like a charm.

  • 1
    As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.
    – Friedrich
    Oct 30, 2023 at 20:46

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