From 1bb564a690e2661094e9071d4003638390a5a6fe Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 5 Feb 2018 12:02:32 +0200
Subject: Fix test and install rules to handle see-through groups correctly

---
 build2/target.hxx | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

(limited to 'build2/target.hxx')

diff --git a/build2/target.hxx b/build2/target.hxx
index 105cc4b..5c8e7bd 100644
--- a/build2/target.hxx
+++ b/build2/target.hxx
@@ -697,8 +697,6 @@ namespace build2
   // also be traversed in reverse, but that's what you usually want,
   // anyway.
   //
-  // For constant iteration use const_group_prerequisites().
-  //
   class group_prerequisites
   {
   public:
@@ -1015,6 +1013,24 @@ namespace build2
       bool
       enter_group ();
 
+      // Return true if the next element is this group's members. Normally
+      // used to iterate over group members only, for example:
+      //
+      // for (...; ++i)
+      // {
+      //   if (i->prerequisite.type.see_through)
+      //   {
+      //     for (i.enter_group (); i.group (); )
+      //     {
+      //       ++i;
+      //       ...
+      //     }
+      //   }
+      // }
+      //
+      bool
+      group () const;
+
       value_type operator* () const
       {
         const target* t (k_ != nullptr ? k_:
-- 
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