make loc smarter

loc

@@ -1,3 +1,12 @@
-#!/bin/sh
+#!/bin/bash
 # counts lines of code, ignoring whitespace & comments
-cat *.rkt | egrep -v '^ *(;.*)?$' | wc -l
+
+filter() {
+    egrep -v '^ *(;.*)?$|^#lang ' "$@"
+}
+
+for name in *.rkt; do
+    printf "%5d %s\n" $(filter "$name" | wc -l) "$name"
+done | sort -n
+
+printf "%5d total\n" $(filter *.rkt | wc -l)