WSL - Can't open URL with equal sign - proposed patch/fix included

Trying to open a URL with a query parameter (equal sign) in WSL causes Windows to open the Documents window.

xdg-open "https://google.com/?help" - works, opens URL in browser xdg-open "https://google.com/?help=me" - Doesn't work, opens Windows Explorer to the Documents folder

xdg-open is called by git-credential-manager to do OAuth, where it passes URLs with several query parameters.

I changed my xdg-open script locally and was able to get this working... Change below.

The rundll32.exe call seems to open any URL format as-expected, so here I'm just trying to use that for URL-type arguments, or explorer.exe for everything else.

I haven't validated exit-codes from rundll32.exe, just assuming it has sane behavior there. Like I said, this seems to work fine for me locally

open_wsl()
{
    local win_path
    if has_url_scheme "$1"; then
        win_path="$1"
        rundll32.exe url.dll,FileProtocolHandler "${win_path}"
    else
        win_path="$(wslpath -aw "$1")"
        [ $? -eq 0 ] || exit_failure_operation_failed
        explorer.exe "${win_path}"
    fi

    if [ $? -eq 0 ]; then
        exit_success
    else
        exit_failure_operation_failed
    fi
}