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@echo off
color 00
echo(%errorlevel%
color
echo(%errorlevel%
pause

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set "errorlevel=0"

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(Call)

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(Call )

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@Echo off
PUSHD "%TEMP%"
rem /* Macro Definitions */
(Set  \n=^^^
%= macro newline Do not modify =%
)
(Set LF=^


%= linefeed. Do not modify =%)
 If "!![" == "[" (
  Echo/%%COL%% macro must be defined prior to delayed expansion being enabled
  Goto :end
 )
(Set COMMENT=rem {i} ^^^
%= macro Comment line. Do not modify =%
)
 For /F "tokens=1,2 delims=#" %%a in ('"prompt #$H#$E# & echo on & for %%b in (1) do rem"') do (set "DEL=%%a")
rem /* %hCol% - Alternate color macro; escaped for use in COL macro. No error checking. Usage: (%hCol:?=HEXVALUE%Output String) */
 Set "hCol=For %%o in (1 2)Do if %%o==2 (^<nul set /p ".=%DEL%" ^> "!os!" ^& findstr /v /a:? /R "^$" "!os!" nul ^& del "!os!" ^> nul 2^>^&1 )Else Set os="
rem /* %TB%   - used with substitution within COL macro to format help output; not fit for general use, */
 Set "TB=^&^< nul Set /P "=.%DEL%!TAB!"^&"
rem /* %COL%  - main color output macro. Usage: (%COL%{[a-f0-9][a-f0-9]}{String to Print}) */
rem /* IMPORTANT: maximimum single line output length of 227 characters for all macro Concatenations on same line. may vary depending on console properties. */
 Set COL=Set "_e=0"^&Set "Oline="^& For %%l in (1 2)Do if %%l==2 (%\n%
 %COMMENT:{i}= Reset vars Oline and _e prior to redefining Oline and commencing macro main body \n%
  If not "!Oline!" == "" (%\n%
   Set "_Str="%\n%
 %COMMENT:{i}= Capture {Arg 1 HEX} {Arg2 output String} \n%
   For /F "tokens=1,2 Delims={}" %%G in ("!oline!")Do (%\n%
    Set "Hex=%%G"%\n%
    Set "_Str=%%~H"%\n%
   )%\n%
 %COMMENT:{i}= test HEX sting is within valid range, flag true or false using _e and Str vars to control error handling. \n%
 %COMMENT:{i}= remove this comment line and the below line for faster performace. Incorrect hex values will print console default colors \n%
   Echo/!Hex!^|findstr /RX "[0-9a-fA-F][0-9a-fA-F]" ^> nul ^|^| (Echo/^&(%hCol:?=04%Invalid - )%TB%(%hCol:?=06%Bad Hex value.)%TB%(%hCol:?=01%%%COL%%{!Hex!}{!_Str!})%TB:TAB=LF%(%hCol:?=02%!Usage!)^&Set "_Str="^&Set "_e=1")%\n%
   If not "!_Str!" == "" (%\n%
 %COMMENT:{i}= Create file with the name of the output string to print in Color using findstr if all Args valid \n%
    ^<nul set /p ".=%DEL%" ^> "!_Str!"%\n%
    findstr /v /a:!Hex! /R "^$" "!_Str!" nul 2^> nul %\n%
 %COMMENT:{i}= delete the created file. \n%
    del "!_Str!" ^> nul 2^>^&1 %\n%
   )Else If not !_e! EQU 1 (%\n%
 %COMMENT:{i}= No Arg 2 Error handling  \n%
    Set "_e=2"^&Echo/^&(%hCol:?=04%Invalid -)%TB%(%hCol:?=06%Arg 2 absent.)%TB%(%hCol:?=01%%%COL%%!Oline!)%TB:TAB=LF%(%hCol:?=04%Input is required for output string.)%TB:TAB=LF%(%hCol:?=02%!Usage!)%\n%
   )%\n%
  )Else (%\n%
 %COMMENT:{i}= No args Error Handling \n%
   Set "_e=3"^&Echo/^&(%hCol:?=04%Invalid -)%TB%(%hCol:?=06%No Args)%TB:TAB=!TAB!!TAB!%(%hCol:?=01%%%COL%%!Oline!)%TB:TAB=LF%(%hCol:?=02%!Usage!)%\n%
  )%\n%
 )Else Set Oline=
 Set "usage=%%COL%%{[a-f0-9][a-f0-9]}{String to Print}"
 For /F eol^=^%LF%%LF%^ delims^= %%A in ('forfiles /p "%~dp0." /m "%~nx0" /c "cmd /c echo(0x09"') do Set "TAB=%%A"
rem /* removes escaping from macros to enable use outside of COL macro */
 Set "hCol=%hCol:^=%"
 Set "TB=%TB:^=%"
 Setlocal EnableDelayedExpansion
 rem /* usage examples. NOTE: expanded macro concatenations should be kept to a minimum as mulitple expansions
 rem    may exceed the line length limit of the parser. */
 (%COL%{02}{"green on black,"})
 (%COL%{10}{"black on blue"})
 Echo/
 (%COL%{04}{"red on black"})
 (%COL%{34}{" red on blue"})
 (%COL%{40}{"black on red"})
 Echo/& %COL%{03}{Demonstration of error handling-}
rem /* error handling *
 Echo/%TB:TAB=!LF! % %hCol:?=20%Example 1 - No args
%COL%
 Echo/%TB:TAB=!LF! % %hCol:?=20%Example 2 - Missing 2nd Arg
%COL%{ff}
 Echo/%TB:TAB=!LF! % %hCol:?=20%Example 3 - Invalid hex value for 1st Arg
%COL%{HF}{string}
 Echo/%TB:TAB=!LF! % %hCol:?=0d%Done
:end
 POPD
Goto :Eof

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@echo off
color 00
echo(%errorlevel%
set "unused="
echo(%errorlevel%
pause
goto :eof

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@echo off
setlocal enableExtensions disableDelayedExpansion
if "%~1" == "" call :init
goto %~1 :eof

:init
%ComSpec% /k  ""%~f0" ":main" & exit"
goto :eof

:main
color 00
echo(%errorlevel%
color
echo(%errorlevel%
pause
goto :eof