From bfdc57e35622908caf7b648805a845bb0d234a6d Mon Sep 17 00:00:00 2001
From: Ben S <ogham@bsago.me>
Date: Sat, 21 Feb 2015 13:27:29 +0000
Subject: [PATCH] Fix infinite loop when writing code at end of file

This resulted in my BBEdit hanging.
---
 rust.mm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rust.mm b/rust.mm
index a89caae..48201a1 100644
--- a/rust.mm
+++ b/rust.mm
@@ -569,7 +569,7 @@ OSErr calculateRuns(BBLMParamBlock &params, const BBLMCallbackBlock *callbacks)
     bool wordchr = false;
     while ((ch = iter.GetNextChar()))
     {
-        if (ch == 'r' && iter.strcmp("##\"", 3) == 0)
+        if (ch == 'r' && iter.CharsLeft() >= 3 && iter.strcmp("##\"", 3) == 0)
         {
             iter--;
             if (!makeCodeRun(iter, runStart, *callbacks)) return noErr;
@@ -675,7 +675,7 @@ OSErr calculateRuns(BBLMParamBlock &params, const BBLMCallbackBlock *callbacks)
                     iter--;
                 }
             }
-            else if (ch == 'a' && iter.strcmp("cro_rules!", 10) == 0)
+            else if (ch == 'a' && iter.CharsLeft() >= 10 && iter.strcmp("cro_rules!", 10) == 0)
             {
                 iter += 10;
                 ch = iter.GetNextChar();