Defx file rename & buffer

[ubmarco]

Problems summary

When renaming a file in defx while a buffer is open for the file, the buffer does not get replaced with the new file.

Environment Information

• OS: Linux

• thinkvim :echo g:thinkvim_version output: 2.6.5

• neovim :version output:

NVIM v0.4.3                                                                                                                                          
Build type: Release
LuaJIT 2.0.5
Compilation: /usr/bin/cc -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -O2 -DNDEBUG -DMIN_LOG_LEVEL=3 -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-
prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fdiagnostics-color=always -DINCLUDE_GEN
ERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -I/build/neovim/src/build/config -I/build/neovim/src/neovim-0.4.3/src -I
/usr/include -I/build/neovim/src/build/src/nvim/auto -I/build/neovim/src/build/include
Compiled by builduser

Features: +acl +iconv +tui
See ":help feature-compile"

   system vimrc file: "$VIM/sysinit.vim"
  fall-back for $VIM: "/usr/share/nvim"

• :checkhealth or :CheckHealth result(neovim only):

health#coc#check
========================================================================
  - OK: Environment check passed

  - OK: Javascript entry lib/attach.js found
  - OK: Service started

health#nvim#check
========================================================================
## Configuration
  - OK: no issues found

## Performance
  - OK: Build type: Release

## Remote Plugins
  - OK: Up to date

## terminal
  - INFO: key_backspace (kbs) terminfo entry: key_backspace=^H
  - INFO: key_dc (kdch1) terminfo entry: key_dc=\E[3~
  - INFO: $VTE_VERSION='6003'
  - INFO: $COLORTERM='truecolor'

health#provider#check
========================================================================
## Clipboard (optional)
  - OK: Clipboard tool found: xclip

## Python 2 provider (optional)
  - INFO: `g:python_host_prog` is not set.  Searching for python2 in the environment.
  - INFO: Multiple python2 executables found.  Set `g:python_host_prog` to avoid surprises.
  - INFO: Executable: /usr/sbin/python2
  - INFO: Other python executable: /usr/bin/python2
  - INFO: Other python executable: /sbin/python2
  - INFO: Other python executable: /bin/python2
  - INFO: Python version: 2.7.18
  - INFO: pynvim version: 0.3.2 (outdated; from ~/.local/lib/python2.7/site-packages/neovim)
  - WARNING: Latest pynvim is NOT installed: 0.4.1

## Python 3 provider (optional)
  - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
  - INFO: Multiple python3 executables found.  Set `g:python3_host_prog` to avoid surprises.
  - INFO: Executable: /usr/sbin/python3
  - INFO: Other python executable: /usr/bin/python3
  - INFO: Other python executable: /sbin/python3
  - INFO: Other python executable: /bin/python3
  - INFO: Python version: 3.8.3
  - INFO: pynvim version: 0.4.1
  - OK: Latest pynvim is installed.

## Ruby provider (optional)
  - INFO: Ruby: ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x86_64-linux]
  - WARNING: `neovim-ruby-host` not found.
    - ADVICE:
      - Run `gem install neovim` to ensure the neovim RubyGem is installed.
      - Run `gem environment` to ensure the gem bin directory is in $PATH.
      - If you are using rvm/rbenv/chruby, try "rehashing".
      - See :help |g:ruby_host_prog| for non-standard gem installations.

## Node.js provider (optional)
  - INFO: Node.js: v14.5.0
  - INFO: Neovim node.js host: /usr/lib/node_modules/neovim/bin/cli.js
  - WARNING: Package "neovim" is out-of-date. Installed: 4.6.0-alpha.0, latest: 4.9.0
    - ADVICE:
      - Run in shell: npm install -g neovim
      - Run in shell (if you use yarn): yarn global add neovim

How to reproduce the problem from neovim startup (Required!)

1. open an existing file
2. rename the file with defx
3. [switch back to the buffer, an error message will be displayed]

Screenshot (if possible)

[glepnir]

@ubmarco Please update the defx. work with the latest defx version.