1 files changed, 9 insertions, 2 deletions
diff --git a/inout.lua b/inout.lua
index ad1c23d..5878c16 100644..100755
--- a/inout.lua
+++ b/inout.lua
@@ -1,9 +1,16 @@
+#!/usr/bin/env lua
 local cal = require "cal"
 
 local main = function (argv)
-  local ok = cal.output (cal.parse_stdin ())
+  local ok, parsed = cal.parse_stdin ()
+  if not ok then
+    error ("error parsing input: " .. parsed)
+    return -1
+  end
 
-  return ok and 0 or -1
+  cal.output (parsed)
+
+  return 0
 end
 
 os.exit (main ())