Work around a minor bug in urwid 1.0.0.

Marien Zwart · Marien Zwart · commit 00dca53369ad · 2011-09-26T21:01:31.000+02:00
diff --git a/bpython/urwid.py b/bpython/urwid.py
@@ -251,7 +251,11 @@ def set_edit_markup(self, markup):
 
         You should arrange for this to be called from the 'change' signal.
         """
-        self._bpy_text, self._bpy_attr = urwid.decompose_tagmarkup(markup)
+        if markup:
+            self._bpy_text, self._bpy_attr = urwid.decompose_tagmarkup(markup)
+        else:
+            # decompose_tagmarkup in some urwids fails on the empty list
+            self._bpy_text, self._bpy_attr = '', []
         # This is redundant when we're called off the 'change' signal.
         # I'm assuming this is cheap, making that ok.
         self._invalidate()
