[svn] Make the C# lexer unicode aware.

Warning, major hack ahead: the code to support multiple
token defs is not the prettiest.

1 files changed, 8 insertions, 0 deletions

diff --git a/pygments/util.py b/pygments/util.py
index 463f8468..01af01e6 100644
--- a/pygments/util.py
+++ b/pygments/util.py
@@ -33,6 +33,14 @@ class OptionError(Exception):
     pass
 
 
+def get_flag_opt(options, optname, allowed, default=None):
+    string = options.get(optname, default)
+    if string not in allowed:
+        raise OptionError('Value for option %s must be one of %s' %
+                          (optname, ', '.join(map(str, allowed))))
+    return string
+
+
 def get_bool_opt(options, optname, default=None):
     string = options.get(optname, default)
     if isinstance(string, bool):