mpv player script to open directory and select currently playing file (Windows).

open-in-explorer.lua

-- open-in-explorer.lua

mp.add_key_binding(nil, "open-in-explorer", function()
    local path = mp.get_property("path")
    if path ~= nil and not path:match("^%a[%a%d-_]+://") then
        path = string.gsub(path, "/", "\\")
        mp.command_native({
            name = "subprocess",
            playback_only = false,
            args = { 'explorer', '/select,',  path .. ' ' },
        })
    else
        mp.osd_message("Invalid path: " .. (path or "No path provided"))
    end
end)

Okay, main version seems to now work in every single case, so there's again no need to use the above PowerShell solution.

Was the fix just appending a space to the path? Please submit a PR with uosc since you have a setup to reproduce this. 🙏

Yea, a trailing space was all it takes to fix this. I've submited the mentioned PR.