X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=python%2Flilylib.py;h=647061f4c710d46066b9e1aa20134bbd52fef291;hb=240217637abf704a6e4701df46fe0c08d062300c;hp=8aaa57ab8bc24ce5d10a8e0d8cc174f121b9445f;hpb=f0fe9c843e926066299c1f9a33004649f42e1f24;p=lilypond.git

diff --git a/python/lilylib.py b/python/lilylib.py
index 8aaa57ab8b..647061f4c7 100644
--- a/python/lilylib.py
+++ b/python/lilylib.py
@@ -335,8 +335,15 @@ class NonDentedHeadingFormatter (optparse.IndentedHelpFormatter):
     def format_description(self, description):
         return description
 
+class NonEmptyOptionParser (optparse.OptionParser):
+    "A subclass of OptionParser that gobbles empty string arguments."
+
+    def parse_args (self, args=None, values=None):
+        options, args = optparse.OptionParser.parse_args (self, args, values)
+        return options, filter (None, args)
+
 def get_option_parser (*args, **kwargs):
-    p = optparse.OptionParser (*args, **kwargs)
+    p = NonEmptyOptionParser (*args, **kwargs)
     p.formatter = NonDentedHeadingFormatter ()
     p.formatter.set_parser (p)
     return p