From 73a73f7bd2785a22f6375e133339f7812374038a Mon Sep 17 00:00:00 2001
From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Sat, 13 May 2017 20:28:32 +0000
Subject: [PATCH] sh: Add test for arithmetic expansion in [x-y] pattern range.

It does not make much sense to generate the '-' in a pattern bracket
expression using arithmetic expansion, but it does not make sense to forbid
it either.

This test already passes.
---
 bin/sh/tests/builtins/Makefile |  1 +
 bin/sh/tests/builtins/case21.0 | 10 ++++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 bin/sh/tests/builtins/case21.0

diff --git a/bin/sh/tests/builtins/Makefile b/bin/sh/tests/builtins/Makefile
index 864c8767d034..09aa095ecf0e 100644
--- a/bin/sh/tests/builtins/Makefile
+++ b/bin/sh/tests/builtins/Makefile
@@ -40,6 +40,7 @@ ${PACKAGE}FILES+=		case17.0
 ${PACKAGE}FILES+=		case18.0
 ${PACKAGE}FILES+=		case19.0
 ${PACKAGE}FILES+=		case20.0
+${PACKAGE}FILES+=		case21.0
 ${PACKAGE}FILES+=		cd1.0
 ${PACKAGE}FILES+=		cd2.0
 ${PACKAGE}FILES+=		cd3.0
diff --git a/bin/sh/tests/builtins/case21.0 b/bin/sh/tests/builtins/case21.0
new file mode 100644
index 000000000000..ea7fb054a546
--- /dev/null
+++ b/bin/sh/tests/builtins/case21.0
@@ -0,0 +1,10 @@
+# $FreeBSD$
+
+case 5 in
+[0$((-9))]) ;;
+*) echo bad1 ;;
+esac
+
+case - in
+[0$((-9))]) echo bad2 ;;
+esac