From 418dff7c565fb5d77e5e4ae0edd7e53d13d3a04d Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Sun, 23 Apr 2017 20:13:42 +0200
Subject: [PATCH] fixup! fixup! fixup! fixup! fixup! fixup! Travis: test more
 Zsh versions

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 3576937..170f2cf 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ test_full:
 	ret=0; \
 	for i in $(wildcard tests/ZDOTDIR*); do \
 		echo "zsh=$zsh ZDOTDIR=$$i"; \
-		SHELL=$(TEST_SHELL) ZDOTDIR=${CURDIR}/$$i cram --shell=$(TEST_SHELL) -v tests || ret=$$(ret+1)); \
+		SHELL=$(TEST_SHELL) ZDOTDIR=${CURDIR}/$$i cram --shell=$(TEST_SHELL) -v tests || ret=$$((ret+1)); \
 		echo; \
 	done; \
 	exit $$ret