make shell math operations style more succulent

Convert the style:
	var=$((${var} + 1))
to:
	: $(( var += 1 ))

The latter is easier to read imo.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/sh/runtests.sh b/sh/runtests.sh
index 7f7e7bd..f083ff4 100755
--- a/sh/runtests.sh
+++ b/sh/runtests.sh
@@ -9,17 +9,17 @@ tret=0
 ebegin "Testing yesno()"
 for f in yes YES Yes true TRUE True 1 ; do
 	if ! yesno $f; then
-		tret=$(($tret + 1))
+		: $(( tret += 1 ))
 		echo "!$f!"
 	fi
 done
 for f in no NO No false FALSE False 0 ; do
 	if yesno $f; then
-		tret=$(($tret + 1))
+		: $(( tret += 1 ))
 		echo "!$f!"
 	fi
 done
 eend $tret
-ret=$(($ret + $tret))
+: $(( ret += $tret ))
 
 exit $ret