From 9750f9ab6a295ffb334843dba229d01df3bbd384 Mon Sep 17 00:00:00 2001 From: David Carlisle Date: Mon, 27 Jun 2022 20:25:31 +0100 Subject: [PATCH 1/5] reserving intent and arg as global attributes --- index.html | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/index.html b/index.html index 45f8073..5ab151d 100644 --- a/index.html +++ b/index.html @@ -366,6 +366,8 @@

Global Attributes

  • scriptlevel
  • style
  • tabindex
    • +
  • intent
    • +
  • arg
  • on* event handler attributes
    • @@ -553,7 +555,7 @@

    The mathvariant attribute

    ssXY properties from [[OPEN-FONT-FORMAT]] to provide both styles. Page authors may use the font-variant-alternates property with corresponding OpenType font features - to access these glyphs. + to access these glyphs.

    @@ -632,7 +634,18 @@

    The displaystyle and scriptlevel attributes

    and false and 2, respectively.
    - +
    +

    The intent and arg attributes

    +

    MathML Core Level 1 defines no behavior for + intent and + arg however these attributes should + be accepted as valid. [[MATHML4]] specifies how these + attributes may be used to improve the accessibilty of + Presentation MathML. Future levels of MathML Core may + specify processing of these attributes in Web Platform + implementations. +

    +

    Integration in the Web Platform

    From 5c1990aba91259d3d9b18cbe1a49a72bfaf5616f Mon Sep 17 00:00:00 2001 From: David Carlisle Date: Mon, 27 Jun 2022 22:48:28 +0100 Subject: [PATCH 2/5] reserving alttext as a global attribute --- index.html | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/index.html b/index.html index 5ab151d..934f596 100644 --- a/index.html +++ b/index.html @@ -368,6 +368,7 @@

    Global Attributes

  • tabindex
  • intent
  • arg
    • +
  • alttext
  • on* event handler attributes
    • @@ -635,13 +636,17 @@

    The displaystyle and scriptlevel attributes

    -

    The intent and arg attributes

    +

    The intent, arg and alttext attributes

    MathML Core Level 1 defines no behavior for - intent and - arg however these attributes should - be accepted as valid. [[MATHML4]] specifies how these - attributes may be used to improve the accessibilty of - Presentation MathML. Future levels of MathML Core may + intent, + arg and + alttext however these attributes should + be accepted as valid. [[MATHML4]] specifies how + intent and arg + may be used to improve the accessibilty of + Presentation MathML. The alttext attribute may be used as alternative text by systems that do not implement MathML.

    +

    +

    Future levels of MathML Core may specify processing of these attributes in Web Platform implementations.

    From 36eb7c8b781e7d4222c1b1e6482b29b22b8255bf Mon Sep 17 00:00:00 2001 From: David Carlisle Date: Mon, 27 Jun 2022 22:59:11 +0100 Subject: [PATCH 3/5] alttext is an attribute on math (not a global attribute) --- index.html | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/index.html b/index.html index 934f596..c80e424 100644 --- a/index.html +++ b/index.html @@ -316,6 +316,15 @@

    The Top-Level <math> Element

    has rules to reset them by default. 

    
+
+	  
    The <math>
+            element should also accept following attribute as described in
+            .
    
+            
+	    
+
         
    
         
    
           
    Types for MathML Attribute Values
    
@@ -368,7 +377,6 @@ 
    Global Attributes
    
             
  • tabindex
    • 
             
  • intent
    • 
             
  • arg
    • 
-            
  • alttext
    • 
             
  • on* event handler attributes
    • 
           
         
    

From 78d599afd39be38ecd61417e782eeea2be1af320 Mon Sep 17 00:00:00 2001
From: David Carlisle 
Date: Thu, 29 Sep 2022 14:33:41 +0100
Subject: [PATCH 4/5] specify alttext fallback for non-mathml, rename and
 rewrite intent+arg section as suggested by @bkardell

---
 index.html | 57 +++++++++++++++++++++++++-----------------------------
 1 file changed, 26 insertions(+), 31 deletions(-)

diff --git a/index.html b/index.html
index c80e424..936fc4b 100644
--- a/index.html
+++ b/index.html
@@ -233,10 +233,11 @@ 
    The Top-Level <math> Element
    
             The <math>
             element accepts the attributes described
             in  as well as the
-            following attribute:
+            following attributes:
           
    
           
           
    
             The
@@ -257,6 +258,13 @@ 
    The Top-Level <math> Element
    
             attribute is absent or has an invalid value, the User Agent
             stylesheet treats it the same as inline.
           
    
+
+            
+	  
    Systems implementing MathML Core may ignore
+	  alttext, however it is used by as
+	  alternative text by some legacy systems that do not
+	  implement math layout.
    
+	   
           
    
             If the element does not have its computed
             display property equal to
@@ -317,13 +325,6 @@ 
    The Top-Level <math> Element
    
           
    
           
    
 
-	  
    The <math>
-            element should also accept following attribute as described in
-            .
    
-            
-	    
 
         
         
    
@@ -375,9 +376,8 @@ 
    Global Attributes
    
             
  • scriptlevel
    • 
             
  • style
    • 
             
  • tabindex
    • 
-            
  • intent
    • 
-            
  • arg
    • 
             
  • on* event handler attributes
    • 
+            
  • additional attributes, as described in 
    • 
           
         
    
         
    
@@ -643,20 +643,17 @@ 
    The displaystyle and scriptlevel attributes
    
             and false and 2, respectively.
           
         
    
-        
    
-          
    The intent, arg and alttext attributes
    
-          
    MathML Core Level 1 defines no behavior for
-          intent, 
-          arg and
-	  alttext however these attributes should
-          be accepted as valid. [[MATHML4]] specifies how
-	  intent and arg
-          may be used to improve the accessibilty of
-          Presentation MathML. The alttext attribute may be used as alternative text by systems that do not implement MathML.
    
-	  
    
-	  
    Future levels of MathML Core may
-          specify processing of these attributes in Web Platform
-          implementations.
+        
    
+          
    Attributes Reserved as Valid
    
+          
    The attributes
+          intent and arg
+	  are reserved as valid attributes.
    
+          
    While MathML Core Level 1 defines no behavior for these
+          attributes, and no functionality is currently implied by
+          this specification, validators must treat them as
+          valid. Future versions of this specification may or may not
+          define them. Authors should be aware that they are currently
+          in development and subject to change.
 	  
    
 	
    
       
    
@@ -5653,9 +5650,8 @@ 
    Operator Dictionary
    
 		  
                 
               
-            
-          
-        
+            
+          
    
         
    
 
@@ -5679,7 +5675,8 @@ 
    Operator Dictionary
    
               
               rather than on each large subtable
               of .
-          
    
+          
+	  
         
         
    
           The intrinsic stretch axis a Unicode character
@@ -5953,7 +5950,7 @@ 
    Security Considerations
    
 
         
    This feature is not available in MathML Core, where
         the <maction> element essentially behaves
-        like an <mrow> container with extra style.
+        like an <mrow> container with extra style.
    
       
       
    An attacker can try to hang the UA by inserting very large
         stretchy operators, effectively making the algorithm
@@ -6032,7 +6029,6 @@ 
    Privacy Considerations
    
         the UI serif font provide Asian glyphs:
    
         
    
-        
    
       
       
    
         
    The following
@@ -6046,7 +6042,6 @@ 
    Privacy Considerations
    
         
    
         
    
-        
    
       
    
       
    This specification relies on information from
          to render MathML content. One

From cf3b59b8ea98c5bc459de2abd9b49bc310792711 Mon Sep 17 00:00:00 2001
From: David Carlisle 
Date: Thu, 29 Sep 2022 16:09:22 +0100
Subject: [PATCH 5/5] This specification does not define any observable
 behavior wording as suggested by @fred-wang

---
 index.html | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/index.html b/index.html
index 936fc4b..d818891 100644
--- a/index.html
+++ b/index.html
@@ -257,13 +257,15 @@ 
    The Top-Level <math> Element
    
             If the display
             attribute is absent or has an invalid value, the User Agent
             stylesheet treats it the same as inline.
+          
     
+	  
    
+           This specification does not define any observable behavior that is
+           specific to the alttext attribute.
           
    
-
-            
-	  
    Systems implementing MathML Core may ignore
-	  alttext, however it is used by as
+          
    
+	  The alttext attribute may be used as
 	  alternative text by some legacy systems that do not
-	  implement math layout.
    
+	  implement math layout.
    
 	   
           
    
             If the element does not have its computed
@@ -324,8 +326,6 @@ 
    The Top-Level <math> Element
    
             has rules to reset them by default.
           
    
           
    
-
-
         
    
         
    
           
    Types for MathML Attribute Values
    
@@ -646,15 +646,18 @@ 
    The displaystyle and scriptlevel attributes
    
         
    
           
    Attributes Reserved as Valid
    
           
    The attributes
-          intent and arg
+          intent and arg
 	  are reserved as valid attributes.
    
-          
    While MathML Core Level 1 defines no behavior for these
-          attributes, and no functionality is currently implied by
-          this specification, validators must treat them as
-          valid. Future versions of this specification may or may not
-          define them. Authors should be aware that they are currently
-          in development and subject to change.
-	  
    
+          
    
+           This specification does not define any observable behavior that is
+           specific to the intent and arg attributes.
+          
    
+          
    
+           These attributes are described in [[MATHML4]] and
+	   future versions of this specification may or may not
+           define them. Authors should be aware that they are currently
+           in development and subject to change.
+	  
    
 	
    
       
    
         
    Integration in the Web Platform