Handle guess_lexer exceptions in pygments reST directive

CHANGES

@@ -1,4 +1,8 @@
 
+2.3-397 | 2015-01-27 10:13:10 -0600
+
+  * Handle guess_lexer exceptions in pygments reST directive (Jon Siwek)
+
 2.3-396 | 2015-01-23 10:49:15 -0600
 
   * DNP3: fix reachable assertion and buffer over-read/overflow.

VERSION

@@ -1 +1 @@
-2.3-396
+2.3-397

doc/ext/rst_directive.py

@@ -135,7 +135,10 @@ class Pygments(Directive):
                 # lexer not found, use default.
                 lexer = TextLexer()
         else:
-            lexer = guess_lexer(content)
+            try:
+                lexer = guess_lexer(content)
+            except:
+                lexer = TextLexer()
 
         # import sys
         # print >>sys.stderr, self.arguments, lexer.__class__