Check if label exists cmd

Question

I wonder is there any way to check that if a label exist in a batch file?

If %input%=ABC (  
  If Label ABC Exists (
    Goto ABC
  )
)

How

Answer 1

If you add this to the top of your function:

if "%~1" == "test" goto:eof

You can use this to check if your function exists:

call :myFunction test 2>nul

if %errorlevel% == 0 call :myFunction

Example:

call :myFunction test 2>nul
if "%errorlevel%" == "0" (call :myFunction) else (echo function does not exist)
goto:eof

:myFunction
    if "%~1" == "test" goto:eof
    echo Function exists
goto:eof