From 69faf7d298715f460501cfef7dc4f132fab2bd26 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 21 Jun 2016 20:29:48 +0200
Subject: [PATCH] Copy'n'paste approach for issue #1153.

---
 tex/gregoriotex-main.tex   | 29 +++++++++++++++++++++++++++++
 tex/gregoriotex-nabc.tex   |  4 ++--
 tex/gregoriotex-spaces.tex | 13 ++++++++++++-
 tex/gsp-default.tex        |  2 ++
 4 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/tex/gregoriotex-main.tex b/tex/gregoriotex-main.tex
index 3fde07407..4f197292c 100644
--- a/tex/gregoriotex-main.tex
+++ b/tex/gregoriotex-main.tex
@@ -815,6 +815,35 @@
   \relax %
 }%
 
+% similarly, but for typesetting Nabc neumes above lines
+
+\def\GreSetNabcAboveLines#1{%
+  \gdef\gre@currenttextabovelines{%
+    \gre@typesetnabcabovelines{#1}%
+    \gdef\gre@currenttextabovelines{}%
+    \relax %
+  }%
+}%
+
+% typesets the nabc above the line
+\def\gre@typesetnabcabovelines#1{%
+  \gre@style@abovelinestext%
+  \gre@debugmsg{spacing}{Raise nabc: \gre@space@dimen@abovelinestextraise}%
+  \endgre@style@abovelinestext%
+  \gre@dimen@temp@five=\dimexpr(4\gre@dimen@stafflineheight %
+    + 4\gre@dimen@interstafflinespace %
+    + \gre@space@dimen@spacebeneathtext %
+    + \gre@dimen@currenttranslationheight %
+    + \gre@space@dimen@spacelinestext %
+    + \gre@dimen@additionalbottomspace %
+    + \gre@dimen@additionaltopspacenabc %
+    + \gre@space@dimen@abovelinestextraise)\relax%
+  \gre@mark@abovelinestext %
+  \gre@debugmsg{spacing}{Raise nabc: \the\gre@dimen@temp@five}%
+    \leavevmode\raise\gre@dimen@temp@five\hbox to 0pt{\gre@style@abovelinestext#1\endgre@style@abovelinestext\hss}%
+  \relax %
+}%
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% macros for the typesetting of the lines
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/tex/gregoriotex-nabc.tex b/tex/gregoriotex-nabc.tex
index b9178fcaa..a953c5fae 100644
--- a/tex/gregoriotex-nabc.tex
+++ b/tex/gregoriotex-nabc.tex
@@ -1,6 +1,6 @@
 %GregorioTeX file.
 %
-% Copyright (C) 2014-2015 The Gregorio Project (see CONTRIBUTORS.md)
+% Copyright (C) 2014-2016 The Gregorio Project (see CONTRIBUTORS.md)
 %
 % This file is part of Gregorio.
 %
@@ -51,7 +51,7 @@
 }}
 
 \def\GreNABCNeumes#1#2{%
-  \GreSetTextAboveLines{\GreNABCChar{#2}}%
+  \GreSetNabcAboveLines{\GreNABCChar{#2}}%
 }
 
 \newif\ifgre@nabcfontloaded%
diff --git a/tex/gregoriotex-spaces.tex b/tex/gregoriotex-spaces.tex
index 682b513e4..41589d131 100644
--- a/tex/gregoriotex-spaces.tex
+++ b/tex/gregoriotex-spaces.tex
@@ -731,12 +731,17 @@
 \newdimen\gre@dimen@additionaltopspace\relax%
 % the one taken into account for above lines text height
 \newdimen\gre@dimen@additionaltopspacealt\relax%
+% the one taken into account for above lines nabc height
+\newdimen\gre@dimen@additionaltopspacenabc\relax%
 
 \newcount\gre@space@count@additionaltopspacethreshold\relax%
 \gre@space@count@additionaltopspacethreshold=2
 
 \newcount\gre@space@count@additionaltopspacealtthreshold\relax%
-\gre@space@count@additionaltopspacethreshold=0
+\gre@space@count@additionaltopspacealtthreshold=0
+
+\newcount\gre@space@count@additionaltopspacenabcthreshold\relax%
+\gre@space@count@additionaltopspacenabcthreshold=4
 
 % #1 is the high height
 % #2 is the low height
@@ -756,6 +761,12 @@
   \else %
     \global\gre@dimen@additionaltopspacealt=0 sp%
   \fi %
+  \gre@count@temp@one=\numexpr(#1 - \gre@pitch@adjust@top - \gre@space@count@additionaltopspacenabcthreshold)\relax %
+  \ifnum\gre@count@temp@one>0\relax %
+    \global\gre@dimen@additionaltopspacenabc=\dimexpr(15750 sp * \gre@count@temp@one * \gre@factor)\relax %
+  \else %
+    \global\gre@dimen@additionaltopspacenabc=0 sp%
+  \fi %
   \gre@count@temp@one=\numexpr((#2 - \gre@pitch@adjust@bottom) * -1)\relax %
   \ifnum\gre@count@temp@one>0\relax %
     \global\gre@dimen@additionalbottomspace=\dimexpr(15750 sp * \gre@count@temp@one * \gre@factor)\relax %
diff --git a/tex/gsp-default.tex b/tex/gsp-default.tex
index f71b3126d..d6dd38b35 100644
--- a/tex/gsp-default.tex
+++ b/tex/gsp-default.tex
@@ -314,6 +314,8 @@
 \grechangecount{additionaltopspacethreshold}{2}%
 % same, for notes taken into account for alt text vertical position
 \grechangecount{additionaltopspacealtthreshold}{0}%
+% same, for notes taken into account for nabc vertical position
+\grechangecount{additionaltopspacenabcthreshold}{4}%
 %the space between the lines and the bottom of the text
 \grecreatedim{spacelinestext}{0.60617 cm}{scalable}%
 %the space beneath the text