--- a/src/Pure/Tools/build_doc.scala Sun Feb 28 17:37:20 2016 +0100
+++ b/src/Pure/Tools/build_doc.scala Sun Feb 28 17:40:01 2016 +0100
@@ -77,7 +77,7 @@
var system_mode = false
val getopts =
- Getopts(() => """
+ Getopts("""
Usage: isabelle build_doc [OPTIONS] [DOCS ...]"
Options are: