lilylib.py: Set parser in option parser formatter.

This ensures %default can be expanded properly in --help docstrings.

diff --git a/python/lilylib.py b/python/lilylib.py
index 9dc4f3e498e72f75d007d2858c6450f9c6950d10..4bf4e1ceebc23c0d281ecbb2b137932938659cc2 100644 (file)
--- a/python/lilylib.py
+++ b/python/lilylib.py
@@ -258,4 +258,5 @@ class NonDentedHeadingFormatter (optparse.IndentedHelpFormatter):
 def get_option_parser (*args, **kwargs):
     p = optparse.OptionParser (*args, **kwargs)
     p.formatter = NonDentedHeadingFormatter ()
+    p.formatter.set_parser (p)
     return p