Bash on Windows shell script file association

sh.sh

#!/bin/bash
# Put this file in C:\ and then run z-register.bat by right clicking it and using "Run as Administrator"
# Translate the windows path to the equivalent Bash on Windows path, then run it!

drive="${1:0:1}"
path="${1:2}"
dir=$(dirname "/mnt/${drive,,}${path//\\/\/}")

cd "$dir"
"/mnt/${drive,,}${path//\\/\/}"

echo
read -p "Press enter key to close window..."

z-deregister.bat

@echo off
@echo.
echo If you see "ERROR: Access is denied." then you need to right click and use "Run as Administrator".
@echo.
echo Removing .sh association...

reg delete HKCR\.sh /f
reg delete HKCR\sh_sh /f

@echo.
pause

z-register.bat

@echo off
@echo.
if not exist "C:\sh.sh" (
  echo Warning: Can't find C:\sh.sh
  echo Please move sh.sh there.
  @echo.
  pause
  exit /b
)
echo If you see "ERROR: Access is denied." then you need to right click and use "Run as Administrator".
@echo.
echo Associating .sh

reg add HKCR\.sh /ve /t REG_SZ /d "sh_sh" /f
reg add HKCR\sh_sh /ve /t REG_SZ /d "Shell Script" /f
reg add HKCR\sh_sh\DefaultIcon /ve /t REG_SZ /d "%%USERPROFILE%%\AppData\Local\lxss\bash.ico,0" /f
reg add HKCR\sh_sh\shell\open\command /ve /t REG_SZ /d "\"%SystemRoot%\System32\bash.exe\" --login -c \"/mnt/c/sh.sh '%%1'\"" /f

@echo.
pause