Read a value from the registry using a single path (HKXX or HKEY_ABC\SubKey\Value). Useful for lazy copy-pasting.

regread.bat

@echo off
setlocal enableextensions enabledelayedexpansion
for /f "usebackq eol= delims=" %%a in ('%*') do set sArgs=%%~a

::Split at last backslash ("\")
for /f "delims==" %%a in ('set _a 2^>nul') do set "%%a="
(set lf=^

)
for %%l in ("!lf!") do set "_a=!sArgs:\=%%~l!"
for /f %%i in ('set _a ^| find /v /c ""') do set /a skip=%%i-1
set flag=
::for/f skips empty lines
for /f skip^=%skip%^ delims^=^ eol^= %%a in ("!_a!") do (
  set "sArgs=!sArgs!!lf!"
  set flag=1
  for %%l in ("!lf!") do set sArgs="!sArgs:\%%a%%~l=!" /v "%%a"
)
if not defined flag set sArgs="!sArgs:~0,-1!" /ve

::Running reg.exe with no arguments return 0 in Windows XP, 1 in Windows Server 2003 and above
::They give different outputs for reg query
reg >nul 2>nul && set skip=4 || set skip=2
for /f "tokens=2* skip=%skip%" %%a in ('reg query !sArgs!') do echo:%%b