From 6cd3765a1d60b6557b9f083b4218fe00287a9329 Mon Sep 17 00:00:00 2001
From: facelessuser <faceless.shop@gmail.com>
Date: Fri, 4 Sep 2015 19:45:44 -0600
Subject: Fix infinite loop #430
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This should fix the remaining corner cases that can cause infinite
loops.  Previous iterations did not account for scenarios where the
“end” index was less than the “start” index.  If the “end” index is
ever less than or equal to the “start” index, the “end” will be
adjusted to to be “start” + 1 allow the full range to be extracted and
replaced.
---
 markdown/preprocessors.py            | 7 ++++---
 tests/extensions/extra/raw-html.html | 7 ++++++-
 tests/extensions/extra/raw-html.txt  | 6 ++++++
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/markdown/preprocessors.py b/markdown/preprocessors.py
index 7fd38d3..7ea4fcf 100644
--- a/markdown/preprocessors.py
+++ b/markdown/preprocessors.py
@@ -178,10 +178,11 @@ class HtmlBlockPreprocessor(Preprocessor):
                 else:  # raw html
                     if len(items) - right_listindex <= 1:  # last element
                         right_listindex -= 1
-                    offset = 1 if i == right_listindex else 0
+                    if right_listindex <= i:
+                        right_listindex = i + 1
                     placeholder = self.markdown.htmlStash.store('\n\n'.join(
-                        items[i:right_listindex + offset]))
-                    del items[i:right_listindex + offset]
+                        items[i:right_listindex]))
+                    del items[i:right_listindex]
                     items.insert(i, placeholder)
         return items
 
diff --git a/tests/extensions/extra/raw-html.html b/tests/extensions/extra/raw-html.html
index 7acb2ee..9c0222f 100644
--- a/tests/extensions/extra/raw-html.html
+++ b/tests/extensions/extra/raw-html.html
@@ -41,4 +41,9 @@ Raw html blocks may also be nested.
 
 <p>Markdown is <em>still</em> active here.</p>
 </div>
-<p>Markdown is <em>active again</em> here.</p>
\ No newline at end of file
+<p>Markdown is <em>active again</em> here.</p>
+<div>
+<p>foo bar</p>
+<p><em>bar</em>
+</p>
+</div>
\ No newline at end of file
diff --git a/tests/extensions/extra/raw-html.txt b/tests/extensions/extra/raw-html.txt
index 72f530b..da24af0 100644
--- a/tests/extensions/extra/raw-html.txt
+++ b/tests/extensions/extra/raw-html.txt
@@ -65,3 +65,9 @@ Markdown is *still* active here.
 </div>
 
 Markdown is *active again* here.
+
+<div markdown=1>
+foo bar
+
+<em>bar</em>
+</div>
-- 
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