🐛 Windows: allow binary without extension

[ras0q]

Description

In Windows, if only rg without extension is installed and rg.exe is not for some reason, checkhealth had failed previously.
This PR allows binaries without extensions to be recognised in Windows.

FIXME: In Windows environment, io.popen(binary .. " --version") does not return any outputs. How can I fix it?

Checking external dependencies ~
- OK rg: found 
- OK fd: found 

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list relevant details about your configuration

• confirm that binaries without extensions are recognised in Windows

Configuration:

• Neovim version (nvim --version): v0.9.5
• Operating system and version: Windows 11

Checklist:

• My code follows the style guidelines of this project (stylua)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (lua annotations)

[jamestrew]

Thanks, that's kinda weird that we need to check for vim.fn.executable("rg.exe") even when rg is installed.

[ras0q]

Sorry, I deleted the branch by mistake. I've reopened the PR.

[ras0q]

Thank you for review!

we need to check for vim.fn.executable("rg.exe") even when rg is installed.

I believe I wrote it to check for rg.exe only if rg was not found, is this code correct?

[jamestrew]

I believe I wrote it to check for rg.exe only if rg was not found, is this code correct?

yes, I think this is ok.
before I merge, I'd like it if you can try my suggestion. Maybe this can help with the issue of not getting the version number.

[jamestrew]

thanks!