Add graphic aria

Author: othree

README.md

@@ -86,6 +86,7 @@ THE SOFTWARE.
 11. [SVG 2.0 Spec][11]
 12. [MathML 3.0 Spec][12]
 13. [DPUB WAI-ARIA 1.0][13]
+14. [WAI-ARIA Graphics Module][14]
 
 
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@@ -107,3 +108,4 @@ THE SOFTWARE.
 [11]:https://www.w3.org/TR/SVG2/
 [12]:https://www.w3.org/TR/MathML3/
 [13]:https://www.w3.org/TR/dpub-aria-1.0/
+[14]:https://www.w3.org/TR/graphics-aria-1.0/

autoload/xml/aria.vim

@@ -135,9 +135,18 @@ let dpub_role = [
     \ 'doc-toc'
 \ ]
 
+" Ref: https://www.w3.org/TR/graphics-aria-1.0/
+" Version: W3C Candidate Recommendation 29 March 2018
+let graphic_role = [
+    \ 'graphics-document',
+    \ 'graphics-object',
+    \ 'graphics-symbol'
+\ ]
+
 let role = extend(widget_role, document_structure)
 let role = extend(role, landmark_role)
 let role = extend(role, dpub_role)
+let role = extend(role, graphic_role)
 
 " https://www.w3.org/TR/wai-aria-1.1/#states_and_properties
 let global_states_and_properties = {