sprunge: improved to support sed filtering

files/bin/sprunge

@@ -1,3 +1,7 @@
 #!/bin/sh
 
-exec curl -F 'sprunge=<-' http://sprunge.us
+if [ $# -eq 0 ]; then
+	cat
+else
+	sed "$@"
+fi | curl -F 'sprunge=<-' http://sprunge.us