commit 074e2395f81d0ecaa66b71a6c228c70b49db72e5
Author: Andreas Gruenbacher <agruen@gnu.org>
Date:   Wed Feb 7 17:05:00 2018 +0100

    Test suite: fix Korn shell incompatibility
    
    tests/merge: In a Korn shell, shift apparently fails when $# is 0.

diff --git a/tests/merge b/tests/merge
index b628891..e950b92 100644
--- a/tests/merge
+++ b/tests/merge
@@ -32,7 +32,7 @@ x2() {
 	shift
     done > b.sed
     echo "$body" | sed -f b.sed > b
-    shift
+    test $# -eq 0 || shift
     while test $# -gt 0 ; do
 	echo "$1"
 	shift