From b7b746ee13f1fd7a0a69b01484e6d4dabf6d39b7 Mon Sep 17 00:00:00 2001
From: Joe Neeman <joeneeman@gmail.com>
Date: Tue, 26 Dec 2006 23:48:57 +0200
Subject: [PATCH] Fix pure-estimation during two-pass spacing. (cherry picked
 from 6a8c839c794cd9e68b8ea2049b5edd6f13ddf4e0 commit)

---
 lily/align-interface.cc |  6 +++++-
 lily/include/system.hh  |  1 +
 lily/system.cc          | 11 +++++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/lily/align-interface.cc b/lily/align-interface.cc
index 736ecb9096..eb02bc864d 100644
--- a/lily/align-interface.cc
+++ b/lily/align-interface.cc
@@ -14,6 +14,7 @@
 #include "hara-kiri-group-spanner.hh"
 #include "grob-array.hh"
 #include "international.hh"
+#include "system.hh"
 #include "warn.hh"
 
 /*
@@ -158,7 +159,10 @@ Align_interface::get_extents_aligned_translates (Grob *me,
   SCM line_break_details = SCM_EOL;
   if (a == Y_AXIS && me_spanner)
     {
-      line_break_details = me_spanner->get_bound (LEFT)->get_property ("line-break-system-details");
+      if (pure)
+	line_break_details = get_root_system (me)->column (start)->get_property ("line-break-system-details");
+      else
+	line_break_details = me_spanner->get_bound (LEFT)->get_property ("line-break-system-details");
 
       if (!me->get_system () && !pure)
 	me->warning (_ ("vertical alignment called before line-breaking.\n"
diff --git a/lily/include/system.hh b/lily/include/system.hh
index 2fe740fddb..429de91baa 100644
--- a/lily/include/system.hh
+++ b/lily/include/system.hh
@@ -43,6 +43,7 @@ public:
 
   vector<Item*> broken_col_range (Item const *, Item const *) const;
   vector<Grob*> columns () const;
+  Grob *column (int i) const;
 
   void add_column (Paper_column *);
   void typeset_grob (Grob *);
diff --git a/lily/system.cc b/lily/system.cc
index ae1abd60c9..8735da1594 100644
--- a/lily/system.cc
+++ b/lily/system.cc
@@ -477,6 +477,17 @@ System::columns () const
   return columns;
 }
 
+Grob*
+System::column (int which) const
+{
+  extract_grob_set (this, "columns", columns);
+  for (vsize i = 0; i < columns.size (); i++)
+    if (dynamic_cast<Paper_column*> (columns[i])->get_rank () == which)
+      return columns[i];
+  programming_error ("couldn't find the column of the requested index");
+  return columns[0];
+}
+
 Paper_score*
 System::paper_score () const
 {
-- 
2.39.5