m4: restore AX_APPEND_TO_FILE_BEHAVIOR

diff --git a/m4/ax_append_to_file.m4 b/m4/ax_append_to_file.m4
index fca5708372eebc56287d05454e9eeaede852ce7d..6de3aa3fd6e1072a736bf82f140c3adecc8d8c42 100644 (file)
--- a/m4/ax_append_to_file.m4
+++ b/m4/ax_append_to_file.m4
@@ -19,9 +19,9 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 9
+#serial 10
 
 AC_DEFUN([AX_APPEND_TO_FILE],[
 AC_REQUIRE([AX_FILE_ESCAPES])
-printf "%s" "$2" >> "$1"
+printf "%s\n" "$2" >> "$1"
 ])