batch file - variable only set at end of FOR loop and then lingering on next run

Question

This question already has an answer here: question from:https://stackoverflow.com/questions/65643657/variable-only-set-at-end-of-for-loop-and-then-lingering-on-next-run

Answer 1

The solution seems to lie in enabling delayed expansion, so batch file should be:

@echo off
setlocal EnableDelayedExpansion 
For /F "usebackq tokens=1,2 delims=," %%a in ("file.txt") do (
echo The output is:
echo %%a
echo %%b
set var_1=%%a
echo !var_1!
echo !var_1:~6!
set var_2=%%b
echo !var_2!
echo !var_2:~6!
)