1 files changed, 15 insertions, 4 deletions
diff --git a/Master/texmf-dist/tex/context/base/font-ott.lua b/Master/texmf-dist/tex/context/base/font-ott.lua
index 47c2e0e9fe0..2be1bf06c00 100644
--- a/Master/texmf-dist/tex/context/base/font-ott.lua
+++ b/Master/texmf-dist/tex/context/base/font-ott.lua
@@ -87,7 +87,7 @@ otf.tables.scripts = {
     ['ugar'] = 'Ugaritic Cuneiform',
     ['xpeo'] = 'Old Persian Cuneiform',
     ['xsux'] = 'Sumero-Akkadian Cuneiform',
-    ['yi'  ] = 'Yi'
+    ['yi'  ] = 'Yi',
 }
 
 otf.tables.languages = {
@@ -569,6 +569,7 @@ otf.tables.features = {
     ['rphf'] = 'Reph Form',
     ['rtbd'] = 'Right Bounds',
     ['rtla'] = 'Right-To-Left Alternates',
+    ['rtlm'] = 'Right To Left Math', -- math
     ['ruby'] = 'Ruby Notation Forms',
     ['salt'] = 'Stylistic Alternates',
     ['sinf'] = 'Scientific Inferiors',
@@ -671,16 +672,24 @@ local to_scripts   = otf.tables.to_scripts
 local to_languages = otf.tables.to_languages
 local to_features  = otf.tables.to_features
 
-for k, v in pairs(to_features) do
+for k, v in next, to_features do
     local stripped = gsub(k,"%-"," ")
     to_features[stripped] = v
     local stripped = gsub(k,"[^a-zA-Z0-9]","")
     to_features[stripped] = v
 end
-for k, v in pairs(to_features) do
+for k, v in next, to_features do
     to_features[lower(k)] = v
 end
 
+otf.meanings.checkers = {
+    rand = function(v)
+        return v and "random"
+    end
+}
+
+local checkers = otf.meanings.checkers
+
 function otf.meanings.normalize(features)
     local h = { }
     for k,v in next, features do
@@ -709,7 +718,9 @@ function otf.meanings.normalize(features)
                     v = b
                 end
             end
-            h[to_features[k] or k] = v
+            k = to_features[k] or k
+            local c = checkers[k]
+            h[k] = c and c(v) or v
         end
     end
     return h