Final fix for homebrew test.

Author: Kasper Peeters

.github/workflows/homebrew-devel.yml

@@ -75,5 +75,5 @@ jobs:
       run:  cat `which cadabra2`
 
     - name: test simple cli run
-      run:  echo "A+B;\nquit()\n" > tst.cdb && cadabra2 tst.cdb
+      run:  printf "A+B;\nquit()\n" > tst.cdb && cadabra2 tst.cdb