From a5418afe0e8f0abd3e5473be73e926f0fbb79d49 Mon Sep 17 00:00:00 2001
From: Gabriel Vigliensoni <gabriel@vigliensoni.com>
Date: Mon, 13 May 2019 11:29:17 -0400
Subject: [PATCH 1/3] Fix:  custos and clef elements should be within layer

With the current schema, custos and clef elements need to be within
syllable.
---
 customizations/mei-Neumes.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/customizations/mei-Neumes.xml b/customizations/mei-Neumes.xml
index c8985d955..e2b43387a 100644
--- a/customizations/mei-Neumes.xml
+++ b/customizations/mei-Neumes.xml
@@ -111,13 +111,13 @@
         <classSpec ident="model.layerPart.cmn" module="MEI.shared" type="model" mode="delete"/>
 
         <!-- Disallow events within layer -->
-        <classSpec ident="model.eventLike" module="MEI.shared" type="model" mode="replace">
+        <!-- <classSpec ident="model.eventLike" module="MEI.shared" type="model" mode="replace">
           <desc>groups event elements that occur in all notational repertoires.</desc>
           <classes>
             <memberOf key="model.syllablePart"/>
             <memberOf key="model.rdgPart.critapp"/>
           </classes>
-        </classSpec>
+        </classSpec> -->
 
         <!-- Disallow neume events within layer; only permitted in mei-all customization -->
         <classSpec ident="model.eventLike.neumes" module="MEI.neumes" type="model" mode="replace">

From fbd1d37329c29f7b7d08136ea337bd4a542e2bc4 Mon Sep 17 00:00:00 2001
From: Johannes Kepper <kepper@edirom.de>
Date: Fri, 7 Jun 2019 14:55:31 +0200
Subject: [PATCH 2/3] fix clefs and custos

---
 customizations/mei-Neumes.xml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/customizations/mei-Neumes.xml b/customizations/mei-Neumes.xml
index c8985d955..2f580485e 100644
--- a/customizations/mei-Neumes.xml
+++ b/customizations/mei-Neumes.xml
@@ -127,6 +127,18 @@
             <memberOf key="model.rdgPart.critapp"/>
           </classes>
         </classSpec>
+        
+        <!-- Allow custos and clef to appear within layer; compensate side effect of removing membership in model.layerPart from model.eventLike -->
+        <elementSpec ident="custos" module="MEI.shared" mode="change">
+          <classes mode="change">
+            <memberOf key="model.layerPart.neumes" mode="add"/>
+          </classes>
+        </elementSpec>
+        <elementSpec ident="clef" module="MEI.shared" mode="change">
+          <classes mode="change">
+            <memberOf key="model.layerPart.neumes" mode="add"/>
+          </classes>
+        </elementSpec>
 
       </schemaSpec>
     </body>

From 78784fa92208ad7683d0c456840ca45ce326efd8 Mon Sep 17 00:00:00 2001
From: Johannes Kepper <kepper@edirom.de>
Date: Fri, 16 Oct 2020 11:44:20 +0200
Subject: [PATCH 3/3] disallow custos and clef within syllable

please check for side effects
---
 customizations/mei-Neumes.xml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/customizations/mei-Neumes.xml b/customizations/mei-Neumes.xml
index 6d9a3c5e6..4cfcf426e 100644
--- a/customizations/mei-Neumes.xml
+++ b/customizations/mei-Neumes.xml
@@ -139,6 +139,14 @@
             <memberOf key="model.layerPart.neumes" mode="add"/>
           </classes>
         </elementSpec>
+        
+        <!-- remove custos and clef (among others) from within syllable -->
+        <classSpec ident="model.eventLike" module="MEI.shared" type="model" mode="change">
+          <classes mode="change">
+            <memberOf key="model.syllablePart" mode="delete"/>
+          </classes>
+        </classSpec>
+        
 
       </schemaSpec>
     </body>