patch 7.4.710
Problem:    It is not possible to make spaces visibible in list mode.
Solution:   Add the "space" item to 'listchars'. (David Bürgin, issue 350)
diff --git a/src/testdir/Makefile b/src/testdir/Makefile
index bc094e1..dfcee81 100644
--- a/src/testdir/Makefile
+++ b/src/testdir/Makefile
@@ -43,6 +43,7 @@
 		test_erasebackword.out \
 		test_eval.out \
 		test_insertcount.out \
+		test_listchars.out \
 		test_listlbr.out \
 		test_listlbr_utf8.out \
 		test_mapping.out \