Handle unrecognised elements in markdown writer

2 files changed, 11 insertions, 1 deletions

diff --git a/mammoth/writers/markdown.py b/mammoth/writers/markdown.py
index 4a2476d..3449990 100644
--- a/mammoth/writers/markdown.py
+++ b/mammoth/writers/markdown.py
@@ -25,6 +25,7 @@ def _init_writers():
 
 
 _writers = _init_writers()
+_default_writer = lambda: ("", "")
 
 
 class MarkdownWriter(object):
@@ -36,7 +37,7 @@ class MarkdownWriter(object):
         self._fragments.append(_escape_markdown(text))
     
     def start(self, name, attributes=None):
-        start, end = _writers[name]()
+        start, end = _writers.get(name, _default_writer)()
         self._fragments.append(start)
         self._element_stack.append(end)
 
diff --git a/tests/writers/markdown_tests.py b/tests/writers/markdown_tests.py
index e1cdf77..a277c3d 100644
--- a/tests/writers/markdown_tests.py
+++ b/tests/writers/markdown_tests.py
@@ -13,6 +13,15 @@ def special_markdown_characters_are_escaped():
 
 
 @istest
+def unrecognised_elements_are_treated_as_normal_text():
+    writer = _create_writer()
+    writer.start("blah");
+    writer.text("Hello");
+    writer.end("blah");
+    assert_equal("Hello", writer.as_string())
+
+
+@istest
 def paragraphs_are_terminated_with_double_new_line():
     writer = _create_writer()
     writer.start("p");