Renaming a file to the same name with different casing on a WSL

[ktnlvr]

Description

When renaming a file that is on windows into its version with a different casing the NvimTree raises an error and refuses the rename. For instance, renaming A.txt -> a.txt is impossible, unless done via another unoccupied name A.txt -> tmp.txt -> a.txt.

Neovim version

NVIM v0.10.2
Build type: Release
LuaJIT 2.1.1713484068

Operating system and version

Debian 12, Linux 5.15.167.4-microsoft-standard-WSL2

Windows variant

WSL

nvim-tree version

5bea2b3

Clean room replication

No additional configuration required.

Steps to reproduce

1. Open WSL.
2. Go to a directory that belongs to windows (usually /mnt/c/Users/<USERNAME>).
3. Ensure that you have read/write permissions for the directory
4. Create a file with an all-capital name (e.g. A.txt)
5. Open it in neovim using nvim -nu /tmp/nvt-min.lua.
6. Open the sidebar using :NvimTreeOpen.
7. Locate and navigate to the created file (e.g. A.txt).
8. Press r and rename it to the lowercase version of its name (e.g. A.txt -> a.txt).
9. Observe [NvimTree] Cannot rename /mnt/c/Users/<USERNAME>/A.txt -> /mnt/c/Users/<USERNAME>/a.txt: file already exists.

Expected behavior

Step 9 should leave the file renamed and output like [NvimTree] /mnt/c/Users/<USERNAME>/A.txt -> /mnt/c/Users/<USERNAME>/a.txt.

Actual behavior

Step 9, error, no file renamed.

[alex-courtis]

Honestly, I don't think this is achievable with windows mapping a case insensitive with a case sensitive file system.

After many attempts we did finally get this working on macos #2814, with just one file system.

The nvim-tree team doesn't have expertise with or access to windows however you're welcome to contribute a fix.

Please ensure that all new or modified codepaths are behind the appropriate windows feature flag.