From 4fa9757fa27d79a0cda399dcf3b711f4d0d60457 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bitbucket@bruce-hill.com>
Date: Sun, 22 Jul 2018 14:57:37 -0700
Subject: Better handling of parsing non-filechunks text.

---
 files.lua | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'files.lua')

diff --git a/files.lua b/files.lua
index c6da8c8..2999c7d 100644
--- a/files.lua
+++ b/files.lua
@@ -229,7 +229,15 @@ Files.get_line_number = function(str, pos)
 end
 Files.get_line = function(str, line_no)
   local line_starts = Files.get_line_starts(str)
-  return str:sub(line_starts[line_no] or 1, (line_starts[line_no + 1] or 1) - 2)
+  local start = line_starts[line_no]
+  if not (start) then
+    return 
+  end
+  local stop = line_starts[line_no + 1]
+  if not (stop) then
+    return 
+  end
+  return str:sub(start, stop - 2)
 end
 local get_lines = re.compile([[    lines <- {| line (%nl line)* |}
     line <- {[^%nl]*}
-- 
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