Filename parsed as nil when using netrw on Windows

[D4isDAVID]

Description

Using Windows, when launching nvim on a file then the backslash seperator is used, but when browsing files with netrw then the regular slash seperator is used, causing get_filename to return nil.

Neovim version

NVIM v0.8.0-1210-gd367ed9b2
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3

OS information

Windows 10 Home version 21H2 build 19044.2130

Steps to reproduce

1. Setup presence.nvim with require('presence'):setup({ auto_update = true })
2. Edit a file with nvim
3. Presence is Editing ... as expected
4. Enter netrw with :Ex
5. Presence is Browsing netrw as expected
6. Choose a file to edit
7. Presence is still Browsing netrw and Parsed filename nil with no extension is logged

Logs

[presence.nvim] Setting up plugin for windows
[presence.nvim] Using Discord IPC socket path: \.pipediscord-ipc-0
[presence.nvim] Checking Discord IPC socket at \.pipediscord-ipc-0...
[presence.nvim] Using id cc7dd71d-2d27-4c18-b226-dd2876cc178e
[presence.nvim] Completed plugin setup
[presence.nvim] Getting nvim socket paths...
[presence.nvim] Executing command: `powershell.exe, -Command, (Get-ChildItem \.pipe).FullName | findstr 'nvim'`
[presence.nvim] Found unexpected Discord IPC socket type: nil
[presence.nvim] Handling BufEnter event...
[presence.nvim] Connecting to Discord...
[presence.nvim] Connected to Discord
[presence.nvim] Authorizing with Discord...
[presence.nvim] Wrote message to pipe
[presence.nvim] Authorized with Discord for d4
[presence.nvim] Parsed filename README.md with md extension
[presence.nvim] Getting project name for C:UsersmalchAppDataLocal^@vim-datasitepackpackerstartpresence.nvim...
[presence.nvim] Setting activity for C:UsersmalchAppDataLocal^@vim-datasitepackpackerstartpresence.nvimREADME.md...
[presence.nvim] Using file asset: { "Markdown", "markdown" }
[presence.nvim] Adding button with repository URL: https://github.com/andweeb/presence.nvim.git
[presence.nvim] Attaching buttons to activity: { {^@    label = "View Repository",^@    url = "https://github.com/andweeb/presence.nvim.git"^@  } }
[presence.nvim] Detected project: presence.nvim
[presence.nvim] Sync activity to all peers...
[presence.nvim] Setting Discord activity...
[presence.nvim] Wrote message to pipe
[presence.nvim] Set activity in Discord for README.md
[presence.nvim] Got nvim socket paths: {}
[presence.nvim] No other remote nvim instances
[presence.nvim] Got nvim socket paths: {}
[presence.nvim] No other remote nvim instances
[presence.nvim] Handling BufAdd event...
[presence.nvim] Handling BufEnter event...
[presence.nvim] Handling BufAdd event...
[presence.nvim] Handling TextChanged event...
[presence.nvim] Last activity sent was within 10 seconds ago, skipping...
[presence.nvim] Parsed filename presence.nvim with nvim extension
[presence.nvim] Getting project name for C:UsersmalchAppDataLocal^@vim-datasitepackpackerstartpresence.nvim...
[presence.nvim] Setting activity for C:UsersmalchAppDataLocal^@vim-datasitepackpackerstartpresence.nvim...
[presence.nvim] Adding button with repository URL: https://github.com/andweeb/presence.nvim.git
[presence.nvim] Attaching buttons to activity: { {^@    label = "View Repository",^@    url = "https://github.com/andweeb/presence.nvim.git"^@  } }
[presence.nvim] Detected project: presence.nvim
[presence.nvim] Sync activity to all peers...
[presence.nvim] Setting Discord activity...
[presence.nvim] Activity already set for C:UsersmalchAppDataLocal^@vim-datasitepackpackerstartpresence.nvim, skipping...
[presence.nvim] Activity already set for C:UsersmalchAppDataLocal^@vim-datasitepackpackerstartpresence.nvim, skipping...
[presence.nvim] Wrote message to pipe
Error executing vim.schedule lua callback: ...ata\site\pack\packer\start\presence.nvim/lua/lib/log.lua:32: Vim(echomsg):E114: Missing quote: "[presence.nvim] Set activity in Discord for presence.nvim\"
stack traceback:
        [C]: in function 'cmd'
        ...ata\site\pack\packer\start\presence.nvim/lua/lib/log.lua:32: in function <...ata\site\pack\packer\start\presence.nvim/lua/lib/log.lua:28>
[presence.nvim] Handling BufAdd event...
[presence.nvim] Handling BufEnter event...
[presence.nvim] Parsed filename nil with no extension
[presence.nvim] No status text for the given buffer, skipping...
[presence.nvim] Parsed filename nil with no extension
[presence.nvim] No status text for the given buffer, skipping...