From 2d352121cddf97e8249c72b58738cb2ede1b1557 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg42.2a@gmail.com>
Date: Fri, 10 May 2013 17:37:12 +0200
Subject: sync with Context as of 2013-05-10

---
 luaotfload-merged.lua | 74 ++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 65 insertions(+), 9 deletions(-)

diff --git a/luaotfload-merged.lua b/luaotfload-merged.lua
index e3f22be..008b02a 100644
--- a/luaotfload-merged.lua
+++ b/luaotfload-merged.lua
@@ -1,6 +1,6 @@
 -- merged file : luatex-fonts-merged.lua
 -- parent file : luatex-fonts.lua
--- merge date  : 05/10/13 10:26:54
+-- merge date  : 05/10/13 15:05:28
 
 do -- begin closure to overcome local limits and interference
 
@@ -5046,7 +5046,7 @@ local report_otf=logs.reporter("fonts","otf loading")
 local fonts=fonts
 local otf=fonts.handlers.otf
 otf.glists={ "gsub","gpos" }
-otf.version=2.742 
+otf.version=2.743 
 otf.cache=containers.define("fonts","otf",otf.version,true)
 local fontdata=fonts.hashes.identifiers
 local chardata=characters and characters.data 
@@ -5065,6 +5065,7 @@ local usemetatables=false
 local packdata=true
 local syncspace=true
 local forcenotdef=false
+local includesubfonts=false
 local wildcard="*"
 local default="dflt"
 local fontloaderfields=fontloader.fields
@@ -5191,8 +5192,8 @@ local ordered_enhancers={
   "check glyphs",
   "check metadata",
   "check extra features",
-  "add duplicates",
   "check encoding",
+  "add duplicates",
   "cleanup tables",
 }
 local actions=allocate()
@@ -5536,7 +5537,7 @@ actions["prepare glyphs"]=function(data,filename,raw)
   local duplicates=resources.duplicates
   local variants=resources.variants
   if rawsubfonts then
-    metadata.subfonts={}
+    metadata.subfonts=includesubfonts and {}
     properties.cidinfo=rawcidinfo
     if rawcidinfo.registry then
       local cidmap=fonts.cid.getmap(rawcidinfo)
@@ -5547,7 +5548,9 @@ actions["prepare glyphs"]=function(data,filename,raw)
         for cidindex=1,#rawsubfonts do
           local subfont=rawsubfonts[cidindex]
           local cidglyphs=subfont.glyphs
-          metadata.subfonts[cidindex]=somecopy(subfont)
+          if includesubfonts then
+            metadata.subfonts[cidindex]=somecopy(subfont)
+          end
           for index=0,subfont.glyphcnt-1 do 
             local glyph=cidglyphs[index]
             if glyph then
@@ -5556,6 +5559,10 @@ actions["prepare glyphs"]=function(data,filename,raw)
               if not unicode or unicode==-1 or unicode>=criterium then
                 unicode=cidunicodes[index]
               end
+              if unicode and descriptions[unicode] then
+                report_otf("preventing glyph %a at index %H to overload unicode %U",name or "noname",index,unicode)
+                unicode=-1
+              end
               if not unicode or unicode==-1 or unicode>=criterium then
                 if not name then
                   name=format("u%06X",private)
@@ -5659,7 +5666,8 @@ actions["check encoding"]=function(data,filename,raw)
   local resources=data.resources
   local properties=data.properties
   local unicodes=resources.unicodes 
-  local indices=resources.indices
+  local indices=resources.indices 
+  local duplicates=resources.duplicates
   local mapdata=raw.map or {}
   local unicodetoindex=mapdata and mapdata.map or {}
   local encname=lower(data.enc_name or mapdata.enc_name or "")
@@ -5671,10 +5679,35 @@ actions["check encoding"]=function(data,filename,raw)
     for unicode,index in next,unicodetoindex do 
       if unicode<=criterium and not descriptions[unicode] then
         local parent=indices[index] 
-        if parent then
-          report_otf("weird, unicode %U points to %U with index %H",unicode,parent,index)
-        else
+        if not parent then
           report_otf("weird, unicode %U points to nowhere with index %H",unicode,index)
+        else
+          local parentdescription=descriptions[parent]
+          if parentdescription then
+            local altuni=parentdescription.altuni
+            if not altuni then
+              altuni={ { unicode=parent } }
+              parentdescription.altuni=altuni
+              duplicates[parent]={ unicode }
+            else
+              local done=false
+              for i=1,#altuni do
+                if altuni[i].unicode==parent then
+                  done=true
+                  break
+                end
+              end
+              if not done then
+                altuni[#altuni+1]={ unicode=parent }
+                table.insert(duplicates[parent],unicode)
+              end
+            end
+            if trace_loading then
+              report_otf("weird, unicode %U points to nowhere with index %H",unicode,index)
+            end
+          else
+            report_otf("weird, unicode %U points to %U with index %H",unicode,index)
+          end
         end
       end
     end
@@ -10691,6 +10724,12 @@ local function packdata(data)
             end
           end
         end
+        local altuni=description.altuni
+        if altuni then
+          for i=1,#altuni do
+            altuni[i]=pack_flat(altuni[i])
+          end
+        end
       end
       local lookups=data.lookups
       if lookups then
@@ -10795,6 +10834,10 @@ local function packdata(data)
               mlookups[tag]=pack_normal(mlookup)
             end
           end
+          local altuni=description.altuni
+          if altuni then
+            description.altuni=pack_normal(altuni)
+          end
         end
         local lookups=data.lookups
         if lookups then
@@ -10986,6 +11029,19 @@ local function unpackdata(data)
             end
           end
         end
+        local altuni=description.altuni
+        if altuni then
+          local altuni=tables[altuni]
+          if altuni then
+            description.altuni=altuni
+            for i=1,#altuni do
+              local tv=tables[altuni[i]]
+              if tv then
+                altuni[i]=tv
+              end
+            end
+          end
+        end
       end
       local lookups=data.lookups
       if lookups then
-- 
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