Splitting a multi-line environment variable into lines

Question

I have the following problem: I execute a windows batch file on a Jenkins server and have to split a multi-line environment variable (set vía a Jenkins parameter) into single li

Answer 1

The FOR /F command takes the LF's inserted in the variable as lines separators (this is the natural behavior of FOR /F command), so nothing additional is required in order to process such variable with FOR /F:

@echo off
setlocal EnableDelayedExpansion

rem Create a variable containing line breaks.
set LF=^
%empty line 1/2%
%empty line 2/2%
set "str=The quick brown!LF!fox jumps over!LF!the lazy dog."

set line=0
for /F "delims=" %%a in ("!str!") do (
   set /A line+=1
   echo Line !line!: %%a
)

The key here is expanding the variable with !exclamationMarks!; otherwise the LF will cut the %value%. Also, if you want complete lines separated by LF, use "delims=". Output example:

Line 1: The quick brown
Line 2: fox jumps over
Line 3: the lazy dog.