babel (1apr19)

git-svn-id: svn://tug.org/texlive/trunk@50699 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 5 insertions, 1 deletions

diff --git a/Master/texmf-dist/tex/generic/babel/babel-bidi-basic-r.lua b/Master/texmf-dist/tex/generic/babel/babel-bidi-basic-r.lua
index 6961dd84221..008d27e0658 100644
--- a/Master/texmf-dist/tex/generic/babel/babel-bidi-basic-r.lua
+++ b/Master/texmf-dist/tex/generic/babel/babel-bidi-basic-r.lua
@@ -74,6 +74,7 @@ function Babel.bidi(head, ispar)
 
   local new_dir = false
   local first_dir = false
+  local inmath = false
 
   local last_lr
 
@@ -104,6 +105,7 @@ function Babel.bidi(head, ispar)
         end
       end
       dir = dir or 'l'
+      if inmath then dir = ('TRT' == tex.mathdir) and 'r' or 'l' end
       if new_dir then
         attr_dir = 0
         for at in node.traverse(item.attr) do
@@ -131,9 +133,11 @@ function Babel.bidi(head, ispar)
         if dir == 'et' or dir == 'es' then dir = 'on' end -- W6
         strong_lr = 'r'                                   -- W3
       end
-    elseif item.id == node.id'dir' then
+    elseif item.id == node.id'dir' and not inmath then
       new_dir = true
       dir = nil
+    elseif item.id == node.id'math' then
+      inmath = (item.subtype == 0)
     else
       dir = nil          -- Not a char
     end