patch 7.4.1453
Problem:    Missing --not-a-term.
Solution:   Add the argument.
diff --git a/src/testdir/Make_amiga.mak b/src/testdir/Make_amiga.mak
index cea4699..2b5d543 100644
--- a/src/testdir/Make_amiga.mak
+++ b/src/testdir/Make_amiga.mak
@@ -34,7 +34,7 @@
 
 .in.out:
 	copy $*.ok test.ok
-	$(VIMPROG) -u amiga.vim -U NONE --noplugin -s dotest.in $*.in
+	$(VIMPROG) -u amiga.vim -U NONE --noplugin --not-a-term -s dotest.in $*.in
 	diff test.out $*.ok
 	rename test.out $*.out
 	-delete X#? ALL QUIET