From 5c44d987752e779bc6be5b8eebef68e365722f60 Mon Sep 17 00:00:00 2001
From: leaf corcoran <leafot@gmail.com>
Date: Tue, 17 Jun 2014 17:40:24 -0700
Subject: [PATCH] assert

---
 moonscript/errors.lua  | 2 +-
 moonscript/errors.moon | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/moonscript/errors.lua b/moonscript/errors.lua
index bdf5811..d85c316 100644
--- a/moonscript/errors.lua
+++ b/moonscript/errors.lua
@@ -18,7 +18,7 @@ local lookup_line
 lookup_line = function(fname, pos, cache)
   if not cache[fname] then
     do
-      local _with_0 = io.open(fname)
+      local _with_0 = assert(io.open(fname))
       cache[fname] = _with_0:read("*a")
       _with_0:close()
     end
diff --git a/moonscript/errors.moon b/moonscript/errors.moon
index a6543ad..b04c567 100644
--- a/moonscript/errors.moon
+++ b/moonscript/errors.moon
@@ -12,7 +12,7 @@ user_error = (...) ->
 -- find the line number of `pos` chars into fname
 lookup_line = (fname, pos, cache) ->
   if not cache[fname]
-    with io.open fname
+    with assert io.open(fname)
       cache[fname] = \read "*a"
       \close!
   pos_to_line cache[fname], pos