filter-branch: use $(($i+1)) instead of $((i+1))

dscho · gitster · commit c12764b8b7e0 · 2007-06-06T12:31:56.000-07:00
The expression $((i+1)) is not portable at all: even some bash versions
do not grok it. So do not use it.

Noticed by Jonas Fonseca.

Signed-off-by: Johannes Schindelin &lt;johannes.schindelin@gmx.de&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/git-filter-branch.sh b/git-filter-branch.sh
@@ -339,7 +339,7 @@ test $commits -eq 0 && die "Found nothing to rewrite"
 
 i=0
 while read commit; do
-	i=$((i+1))
+	i=$(($i+1))
 	printf "$commit ($i/$commits) "
 
 	git-read-tree -i -m $commit
