Windows .bat/.cmd function library in own file?

Question

there is a nice way to build functions in DOS .bat/.cmd script. To modularize some installation scripts, it would be nice to include a file with a library of functions into an .

Answer 1

There is an easier way to load the library functions each time the main file is executed. For example:

@echo off
rem If current code was restarted, skip library loading part
if "%_%" == "_" goto restart
rem Copy current code and include any desired library
copy /Y %0.bat+lib1.bat+libN.bat %0.full.bat
rem Set the restart flag
set _=_
rem Restart current code
%0.full %*
:restart
rem Delete the restart flag
set _=
rem Place here the rest of the batch file
rem . . . . .
rem Always end with goto :eof, because the library functions will be loaded
rem after this code!
goto :eof