# HG changeset patch
# User wenzelm
# Date 1678540736 -3600
# Node ID b619d80f61fa00f4eb191d58f50665de094a75f1
# Parent  44f7b76d110672dcb338da6aee0532c7e8f54909
clarified signature;

diff -r 44f7b76d1106 -r b619d80f61fa src/Pure/ROOT.scala
--- a/src/Pure/ROOT.scala	Sat Mar 11 13:37:58 2023 +0100
+++ b/src/Pure/ROOT.scala	Sat Mar 11 14:18:56 2023 +0100
@@ -25,4 +25,5 @@
   val proper_string = Library.proper_string _
   def proper_list[A](list: List[A]): Option[List[A]] = Library.proper_list(list)
   def if_proper[A](x: Iterable[A], body: => String): String = Library.if_proper(x, body)
+  def if_proper(b: Boolean, body: => String): String = Library.if_proper(b, body)
 }
diff -r 44f7b76d1106 -r b619d80f61fa src/Pure/System/options.scala
--- a/src/Pure/System/options.scala	Sat Mar 11 13:37:58 2023 +0100
+++ b/src/Pure/System/options.scala	Sat Mar 11 14:18:56 2023 +0100
@@ -250,7 +250,7 @@
   override def toString: String = iterator.mkString("Options(", ",", ")")
 
   private def print_entry(opt: Options.Entry): String =
-    if (opt.public) "public " + opt.print else opt.print
+    if_proper(opt.public, "public ") + opt.print
 
   def print: String = cat_lines(iterator.toList.sortBy(_.name).map(print_entry))
 
diff -r 44f7b76d1106 -r b619d80f61fa src/Pure/library.scala
--- a/src/Pure/library.scala	Sat Mar 11 13:37:58 2023 +0100
+++ b/src/Pure/library.scala	Sat Mar 11 14:18:56 2023 +0100
@@ -292,6 +292,9 @@
   def if_proper[A](x: Iterable[A], body: => String): String =
     if (x == null || x.isEmpty) "" else body
 
+  def if_proper(b: Boolean, body: => String): String =
+    if (!b) "" else body
+
 
   /* reflection */