PushDCounter

:pushd_counter
rem -- counts the number of pushd calls
rem -- by Vasil "npocmaka" Arnaudov
@echo off
set prompt_backup=%prompt%
prompt $+
( echo on
   for %%a in (1) do ( @rem
   )
)>%temp%\p.tmp
@echo off
prompt %prompt_backup%
set "prompt_backup="
for /f "usebackq tokens=1,2,3 delims=() " %%P in ("%temp%\p.tmp") do (
    set pushes=%%P
    goto :end_for
)
:end_for
call :strlen0.3  pushes
del %temp%\p.tmp /s /q >nul
goto :eof

:strlen0.3  StrVar  [RtnVar]
  setlocal EnableDelayedExpansion
  set "s=#!%~1!"
  set "len=0"
  for %%A in (2187 729 243 81 27 9 3 1) do (
    set /A mod=2*%%A
    for %%Z in (!mod!) do (
        if "!s:~%%Z,1!" neq "" (
            set /a "len+=%%Z"
            set "s=!s:~%%Z!"

        ) else (
            if "!s:~%%A,1!" neq "" (
                set /a "len+=%%A"
                set "s=!s:~%%A!"
            )
        )
    )
  )
  endlocal & if "%~2" neq "" (set %~2=%len%) else echo %len%
exit /b