Meta/Count: do not add unnecessary @{now}

Count

@@ -1,14 +1,14 @@
 #!/bin/sh
 
-: ${asof=${1-now}}
+: ${asof=${1+"@{$1}"}}
 
 : ${lasttag=${2-$(
 	git tag --list 'v*.0' --sort=version:tag | tail -n 1
   )}}
 
-for r in "$lasttag..master@{$asof}" \
-	"master@{$asof}..next@{$asof}" \
-	"master@{$asof}..seen@{$asof}"
+for r in "$lasttag..master$asof" \
+	"master$asof..next$asof" \
+	"master$asof..seen$asof"
 do
 	echo "$r	$(git rev-list --count --no-merges $r)"
 done