From 5cf3a76857589523161949e6ebad261d5939cc65 Mon Sep 17 00:00:00 2001
From: Hans Hagen <pragma@wxs.nl>
Date: Tue, 2 Feb 2010 23:09:00 +0100
Subject: beta 2010.02.02 23:09

---
 tex/context/base/font-afm.lua               |   2 +-
 tex/context/base/font-ctx.lua               |  46 +++++--
 tex/context/base/font-ini.mkiv              |  43 ++++++-
 tex/context/base/font-otf.lua               |   2 +-
 tex/context/base/font-syn.lua               | 184 ++++++++++++++++++----------
 tex/context/base/font-tfm.lua               |  23 +++-
 tex/context/base/luat-dum.lua               |   5 +
 tex/context/base/mult-sys.tex               |   1 +
 tex/generic/context/luatex-fonts-merged.lua |  32 ++++-
 9 files changed, 254 insertions(+), 84 deletions(-)

(limited to 'tex')

diff --git a/tex/context/base/font-afm.lua b/tex/context/base/font-afm.lua
index 60da808bb..2b5438142 100644
--- a/tex/context/base/font-afm.lua
+++ b/tex/context/base/font-afm.lua
@@ -710,7 +710,7 @@ function tfm.read_from_afm(specification)
     local tfmtable = afm.afm_to_tfm(specification)
     if tfmtable then
         tfmtable.name = specification.name
-        tfmtable = tfm.scale(tfmtable, specification.size)
+        tfmtable = tfm.scale(tfmtable, specification.size, specification.relativeid)
         local afmdata = tfmtable.shared.afmdata
         local filename = afmdata and afmdata.luatex and afmdata.luatex.filename
         if not filename then
diff --git a/tex/context/base/font-ctx.lua b/tex/context/base/font-ctx.lua
index 166da7dec..48f99efba 100644
--- a/tex/context/base/font-ctx.lua
+++ b/tex/context/base/font-ctx.lua
@@ -8,7 +8,7 @@ if not modules then modules = { } end modules ['font-ctx'] = {
 
 -- needs a cleanup: merge of replace, lang/script etc
 
-local texsprint, count = tex.sprint, tex.count
+local texsprint, count, texsetcount = tex.sprint, tex.count, tex.setcount
 local format, concat, gmatch, match, find, lower, gsub = string.format, table.concat, string.gmatch, string.match, string.find, string.lower, string.gsub
 local tostring, next, type = tostring, next, type
 local lpegmatch = lpeg.match
@@ -329,14 +329,24 @@ end
 
 local n = 0
 
-function define.command_2(global,cs,str,size,classfeatures,fontfeatures,classfallbacks,fontfallbacks,mathsize,textsize)
+-- we can also move rscale to here (more consistent)
+
+function define.command_2(global,cs,str,size,classfeatures,fontfeatures,classfallbacks,fontfallbacks,mathsize,textsize,relativeid)
+    if trace_defining then
+        logs.report("define font","memory usage before: %s",statistics.memused())
+    end
     -- name is now resolved and size is scaled cf sa/mo
     local lookup, name, sub, method, detail = get_specification(str or "")
     -- asome settings can be overloaded
-    if lookup and lookup ~= "" then specification.lookup = lookup end
+    if lookup and lookup ~= "" then
+        specification.lookup = lookup
+    end
+    if relativeid and relativeid ~= "" then -- experimental hook
+        local id = tonumber(relativeid) or 0
+        specification.relativeid = id > 0 and id
+    end
     specification.name = name
     specification.size = size
---~     specification.sub = sub
     specification.sub = (sub and sub ~= "" and sub) or specification.sub
     specification.mathsize = mathsize
     specification.textsize = textsize
@@ -349,9 +359,6 @@ function define.command_2(global,cs,str,size,classfeatures,fontfeatures,classfal
     elseif classfeatures and classfeatures ~= "" then
         specification.method, specification.detail = "*", classfeatures
     end
-    if trace_defining then
-        logs.report("define font","memory usage before: %s",statistics.memused())
-    end
     if fontfallbacks and fontfallbacks ~= "" then
         specification.fallbacks = fontfallbacks
     elseif classfallbacks and classfallbacks ~= "" then
@@ -360,6 +367,7 @@ function define.command_2(global,cs,str,size,classfeatures,fontfeatures,classfal
     local tfmdata = define.read(specification,size) -- id not yet known
     if not tfmdata then
         logs.report("define font","unable to define %s as \\%s",name,cs)
+        texsetcount("global","lastfontid",-1)
     elseif type(tfmdata) == "number" then
         if trace_defining then
             logs.report("define font","reusing %s with id %s as \\%s (features: %s/%s, fallbacks: %s/%s)",name,tfmdata,cs,classfeatures,fontfeatures,classfallbacks,fontfallbacks)
@@ -367,6 +375,7 @@ function define.command_2(global,cs,str,size,classfeatures,fontfeatures,classfal
         tex.definefont(global,cs,tfmdata)
         -- resolved (when designsize is used):
         texsprint(ctxcatcodes,format("\\def\\somefontsize{%isp}",fontdata[tfmdata].size))
+        texsetcount("global","lastfontid",tfmdata)
     else
     --  local t = os.clock(t)
         local id = font.define(tfmdata)
@@ -383,6 +392,7 @@ function define.command_2(global,cs,str,size,classfeatures,fontfeatures,classfal
     --~ if specification.fallbacks then
     --~     fonts.collections.prepare(specification.fallbacks)
     --~ end
+        texsetcount("global","lastfontid",id)
     end
     if trace_defining then
         logs.report("define font","memory usage after: %s",statistics.memused())
@@ -390,6 +400,28 @@ function define.command_2(global,cs,str,size,classfeatures,fontfeatures,classfal
     statistics.stoptiming(fonts)
 end
 
+local enable_auto_r_scale = false
+
+experiments.register("fonts.autorscale", function(v)
+    enable_auto_r_scale = v
+end)
+
+local calculate_scale = fonts.tfm.calculate_scale
+
+function fonts.tfm.calculate_scale(tfmtable, scaledpoints, relativeid)
+    local scaledpoints, delta = calculate_scale(tfmtable, scaledpoints, relativeid)
+    if enable_auto_r_scale and relativeid then -- for the moment this is rather context specific
+        local relativedata = fontdata[relativeid]
+        local id_x_height = relativedata and relativedata.parameters and relativedata.parameters.x_height
+        local tf_x_height = id_x_height and tfmtable.parameters and tfmtable.parameters.x_height * delta
+        if tf_x_height then
+            scaledpoints = (id_x_height/tf_x_height) * scaledpoints
+            delta = scaledpoints/(tfmtable.units or 1000)
+        end
+    end
+    return scaledpoints, delta
+end
+
 --~ table.insert(readers.sequence,1,'vtf')
 
 --~ function readers.vtf(specification)
diff --git a/tex/context/base/font-ini.mkiv b/tex/context/base/font-ini.mkiv
index 77ede86ea..5e3cca258 100644
--- a/tex/context/base/font-ini.mkiv
+++ b/tex/context/base/font-ini.mkiv
@@ -562,6 +562,22 @@
 %D We could instead have used dirty grouping tricks, but this
 %D one works too.
 
+% \enableexperiments[fonts.autorscale]
+%
+% \starttypescript[mscore]
+%     \definetypeface [mscore] [rm] [serif] [mscoretimes]   [default]
+%     \definetypeface [mscore] [ss] [sans]  [mscorearial]   [default] [rscale=auto] % 0.860]
+%     \definetypeface [mscore] [tt] [mono]  [mscorecourier] [default] [rscale=auto] % 1.065]
+%     \definetypeface [mscore] [mm] [math]  [times]         [default] [rscale=auto] % 1.020]
+% \stoptypescript
+%
+% \starttext
+%    \setupbodyfont[mscore,12pt]
+%    \startTEXpage
+%        test \ss test \tt test
+%    \stopTEXpage
+% \stoptext
+
 \let\defaultrelativefontsize \plusone
 \let\localrelativefontsize   \plusone
 \def\localabsolutefontsize  {\fontbody}
@@ -571,6 +587,17 @@
 \def\saverelativefontsize#1#2% #1=rm|ss|.. #2=waarde
   {\setxvalue{\fontclass#1\s!rscale}{#2}}
 
+\def\checkrelativefontid
+  {\ifcsname\??tf\fontclass\s!rname\endcsname
+     \@EA\let\@EA\relativefontid\csname\??tf\fontclass\s!rname\endcsname
+   \else
+     \@EA\xdef\csname\??tf\fontclass\s!rname\endcsname{\the\lastfontid}%
+      \let\relativefontid\empty
+   \fi}
+
+% \def\checkrelativefontid
+%   {\let\relativefontid\minusone}
+
 \def\checkrelativefontsize#1%
   {\edef\relativefontsize
      {\ifcsname\fontclass#1\s!rscale\endcsname
@@ -579,7 +606,13 @@
         \csname\defaultfontclass#1\s!rscale\endcsname
       \else
         \defaultrelativefontsize
-      \fi\fi}}
+      \fi\fi}%
+   \ifx\relativefontsize\v!auto
+     \let\relativefontsize\plusone
+     \checkrelativefontid
+   \else
+     \let\relativefontid\minusone
+   \fi}
 
 % \letvalue{\s!default\s!rscale}\defaultrelativefontsize
 %
@@ -646,7 +679,8 @@
 
 \newcount\scaledfontmode
 \newdimen\scaledfontsize
-\newtoks\everydefinefont
+\newtoks \everydefinefont
+\newcount\lastfontid
 
 \def\currentfontbodysize
   {\ifcsname\??ft\s!default\somefontsize\endcsname
@@ -655,6 +689,8 @@
      \somefontsize
    \fi}
 
+\let\relativefontid\empty
+
 \def\lowleveldefinefont#1#2% #2 = cs
   {%
    \ctxlua{fonts.define.command_1("\luaescapestring{#1}")}% the escapestring catches at \somedimen
@@ -698,7 +734,8 @@
       "\@@fontclassfallbacks",
       "\@@fontfallbacks",
       0\currentmathsize,
-      \number\dimexpr\textface\relax
+      \number\dimexpr\textface\relax,
+      "\relativefontid" % experiment
    )}%
    \edef\somefontspec{at \somefontsize}% we need the resolved designsize (for fallbacks)
    \expandafter\let\expandafter\lastrawfontcall\csname#2\endcsname
diff --git a/tex/context/base/font-otf.lua b/tex/context/base/font-otf.lua
index 6ff3d4086..7ba9a21b6 100644
--- a/tex/context/base/font-otf.lua
+++ b/tex/context/base/font-otf.lua
@@ -1817,7 +1817,7 @@ function tfm.read_from_open_type(specification)
                 end
             end
         end
-        tfmtable = tfm.scale(tfmtable,s)
+        tfmtable = tfm.scale(tfmtable,s,specification.relativeid)
      -- here we resolve the name; file can be relocated, so this info is not in the cache
         local filename = (otfdata and otfdata.luatex and otfdata.luatex.filename) or specification.filename
         if not filename then
diff --git a/tex/context/base/font-syn.lua b/tex/context/base/font-syn.lua
index c2c96f33e..d6c49b459 100644
--- a/tex/context/base/font-syn.lua
+++ b/tex/context/base/font-syn.lua
@@ -38,7 +38,7 @@ fonts.names.data       = fonts.names.data    or { }
 local names   = fonts.names
 local filters = fonts.names.filters
 
-names.version    = 1.102
+names.version    = 1.103
 names.basename   = "names"
 names.saved      = false
 names.loaded     = false
@@ -70,7 +70,7 @@ local weights = Cs ( -- not extra
   + P("heavy")
   + P("ultra")
   + P("black")
-  + P("bol")
+  + P("bol")   -- / "bold"
   + P("regular")  / "normal"
 )
 
@@ -94,15 +94,22 @@ local widths = Cs(
   + P("book")     / "normal"
 )
 
+local variants = Cs( -- fax casual
+    P("smallcaps")
+  + P("oldstyle")
+  + P("caps")      / "smallcaps"
+)
+
 local any = P(1)
 
 local analysed_table
 
 local analyser = Cs (
     (
-        weights / function(s) analysed_table[1] = s return "" end
-      + styles  / function(s) analysed_table[2] = s return "" end
-      + widths  / function(s) analysed_table[3] = s return "" end
+        weights  / function(s) analysed_table[1] = s return "" end
+      + styles   / function(s) analysed_table[2] = s return "" end
+      + widths   / function(s) analysed_table[3] = s return "" end
+      + variants / function(s) analysed_table[4] = s return "" end
       + any
     )^0
 )
@@ -110,27 +117,30 @@ local analyser = Cs (
 local splitter = lpeg.splitat("-")
 
 function names.splitspec(askedname)
-    local name, weight, style, width = lpegmatch(splitter,askedname)
-    weight = weight and lpegmatch(weights,weight) or weight
-    style  = style  and lpegmatch(styles, style)  or style
-    width  = width  and lpegmatch(widths, width)  or width
+    local name, weight, style, width, variant = lpegmatch(splitter,askedname)
+    weight  = weight  and lpegmatch(weights, weight)  or weight
+    style   = style   and lpegmatch(styles,  style)   or style
+    width   = width   and lpegmatch(widths,  width)   or width
+    variant = variant and lpegmatch(variants,variant) or variant
     if trace_names then
-        logs.report("fonts","requested name '%s' split in name '%s', weight '%s', style '%s' and width '%s'",askedname,name or '',weight or '',style or '',width or '')
+        logs.report("fonts","requested name '%s' split in name '%s', weight '%s', style '%s', width '%s' and variant '%s'",
+            askedname,name or '',weight or '',style or '',width or '',variant or '')
     end
-    if not weight or not weight or not width then
-        weight, style, width = weight or "normal", style or "normal", width or "normal"
+    if not weight or not weight or not width or not variant then
+        weight, style, width, variant = weight or "normal", style or "normal", width or "normal", variant or "normal"
         if trace_names then
-            logs.report("fonts","request '%s' normalized to '%s-%s-%s-%s'",askedname,name,weight,style,width)
+            logs.report("fonts","request '%s' normalized to '%s-%s-%s-%s-%s'",
+                askedname,name,weight,style,width,variant)
         end
     end
-    return name or askedname, weight, style, width
+    return name or askedname, weight, style, width, variant
 end
 
 local function analysespec(somename)
     if somename then
         analysed_table = { }
         local name = lpegmatch(analyser,somename)
-        return name, analysed_table[1], analysed_table[2],analysed_table[3]
+        return name, analysed_table[1], analysed_table[2], analysed_table[3], analysed_table[4]
     end
 end
 
@@ -332,13 +342,17 @@ local function check_name(data,result,filename,suffix,subfont)
     weight      = weight     and cleanname(weight)
     italicangle = (italicangle == 0) and nil
     -- analyse
-    local a_name, a_weight, a_style, a_width = analysespec(fullname or fontname or familyname)
+    local a_name, a_weight, a_style, a_width, a_variant = analysespec(fullname or fontname or familyname)
     -- check
     local width = a_width
+    local variant = a_variant
     local style = modifiers and gsub(modifiers,"[^%a]","")
     if not style and italicangle then
         style = "italic"
     end
+    if not variant or variant == "" then
+        variant = "normal"
+    end
     if not weight or weight == "" then
         weight = a_weight
     end
@@ -364,6 +378,7 @@ local function check_name(data,result,filename,suffix,subfont)
         weight      = weight,
         style       = style,
         width       = width,
+        variant     = variant,
         minsize     = result.design_range_bottom or 0,
         maxsize     = result.design_range_top or 0,
         designsize  = result.design_size or 0,
@@ -378,18 +393,23 @@ local function cleanupkeywords()
         for i=1,#specifications do
             local s = specifications[i]
             -- fix (sofar styles are taken from the name, and widths from the specification)
-            local b_variant, b_weight, b_style, b_width = analysespec(s.weight)
-            local c_variant, c_weight, c_style, c_width = analysespec(s.style)
-            local d_variant, d_weight, d_style, d_width = analysespec(s.width)
-            local e_variant, e_weight, e_style, e_width = analysespec(s.fullname or "")
-            local weight  = b_weight  or c_weight  or d_weight  or e_weight  or "normal"
-            local style   = b_style   or c_style   or d_style   or e_style   or "normal"
-            local width   = b_width   or c_width   or d_width   or e_width   or "normal"
-            local variant = b_variant or c_variant or d_variant or e_variant or "normal"
-            if weight  then weights [weight ] = (weights [weight ] or 0) + 1 end
-            if style   then styles  [style  ] = (styles  [style  ] or 0) + 1 end
-            if width   then widths  [width  ] = (widths  [width  ] or 0) + 1 end
-            if variant then variants[variant] = (variants[variant] or 0) + 1 end
+            local _, b_weight, b_style, b_width, b_variant = analysespec(s.weight)
+            local _, c_weight, c_style, c_width, c_variant = analysespec(s.style)
+            local _, d_weight, d_style, d_width, d_variant = analysespec(s.width)
+            local _, e_weight, e_style, e_width, e_variant = analysespec(s.variant)
+            local _, f_weight, f_style, f_width, f_variant = analysespec(s.fullname or "")
+            local weight  = b_weight  or c_weight  or d_weight  or e_weight  or f_weight  or "normal"
+            local style   = b_style   or c_style   or d_style   or e_style   or f_style   or "normal"
+            local width   = b_width   or c_width   or d_width   or e_width   or f_width   or "normal"
+            local variant = b_variant or c_variant or d_variant or e_variant or f_variant or "normal"
+            if not weight  or weight  == "" then weight  = "normal" end
+            if not style   or style   == "" then style   = "normal" end
+            if not width   or width   == "" then width   = "normal" end
+            if not variant or variant == "" then variant = "normal" end
+            weights [weight ] = (weights [weight ] or 0) + 1
+            styles  [style  ] = (styles  [style  ] or 0) + 1
+            widths  [width  ] = (widths  [width  ] or 0) + 1
+            variants[variant] = (variants[variant] or 0) + 1
             if weight ~= s.weight then
                 s.fontweight = s.weight
             end
@@ -404,16 +424,17 @@ local function collectstatistics()
     local data = names.data
     local specifications = data.specifications
     if specifications then
-        local weights, styles, widths = { }, { }, { }
+        local weights, styles, widths, variants = { }, { }, { }, { }
         for i=1,#specifications do
             local s = specifications[i]
-            local weight, style, width = s.weight, s.style, s.width
-            if weight then weights[weight] = (weights[weight] or 0) + 1 end
-            if style  then styles [style ] = (styles [style ] or 0) + 1 end
-            if width  then widths [width ] = (widths [width ] or 0) + 1 end
+            local weight, style, width, variant = s.weight, s.style, s.width, s.variant
+            if weight  then weights [weight ] = (weights [weight ] or 0) + 1 end
+            if style   then styles  [style  ] = (styles  [style  ] or 0) + 1 end
+            if width   then widths  [width  ] = (widths  [width  ] or 0) + 1 end
+            if variant then variants[variant] = (variants[variant] or 0) + 1 end
         end
         local stats = data.statistics
-        stats.weights, stats.styles, stats.widths, stats.fonts = weights, styles, widths, #specifications
+        stats.weights, stats.styles, stats.widths, stats.variants, stats.fonts = weights, styles, widths, variants, #specifications
     end
 end
 
@@ -480,7 +501,7 @@ local function checkduplicate(where) -- fails on "Romantik" but that's a border
         for _, m in next, mapping do
             for k, v in next, m do
                 local s = specifications[v]
-                local hash = format("%s-%s-%s-%s",s.familyname,s.weight or "*",s.style or "*",s.width or "*")
+                local hash = format("%s-%s-%s-%s-%s",s.familyname,s.weight or "*",s.style or "*",s.width or "*",s.variant or "*")
                 local h = loaded[hash]
                 if h then
                     local ok = true
@@ -919,6 +940,31 @@ end
 
 -- specified search
 
+local function s_collect_weight_style_width_variant(found,done,all,weight,style,width,variant,family)
+    if family then
+        for i=1,#family do
+            local f = family[i]
+            if f and weight == f.weight and style == f.style and width == f.width and variant == f.variant then
+                found[#found+1], done[f] = f, true
+                if not all then return end
+            end
+        end
+    end
+end
+local function m_collect_weight_style_width_variant(found,done,all,weight,style,width,variant,families,sorted,strictname)
+    for i=1,#sorted do
+        local k = sorted[i]
+        local family = families[k]
+        for i=1,#family do
+            local f = family[i]
+            if not done[f] and weight == f.weight and style == f.style and width == f.width and variant == f.variant and find(f.fontname,strictname) then
+                found[#found+1], done[f] = f, true
+                if not all then return end
+            end
+        end
+    end
+end
+
 local function s_collect_weight_style_width(found,done,all,weight,style,width,family)
     if family then
         for i=1,#family do
@@ -1088,23 +1134,32 @@ local function m_collect(found,done,all,families,sorted,strictname)
     end
 end
 
-local function collect(stage,found,done,name,weight,style,width,all)
+local function collect(stage,found,done,name,weight,style,width,variant,all)
     local data = names.data
     local families, sorted = data.families, data.sorted_families
     strictname = "^".. name -- to be checked
     local family = families[name]
     if trace_names then
-        logs.report("fonts","resolving name '%s', weight '%s', style '%s', width '%s'",name or "?",tostring(weight),tostring(style),tostring(width))
+        logs.report("fonts","resolving name '%s', weight '%s', style '%s', width '%s', variant '%s'",
+            name or "?",tostring(weight),tostring(style),tostring(width),tostring(variant))
     end
---~ print(name,table.serialize(family))
+    --~ print(name,table.serialize(family))
     if weight and weight ~= "" then
         if style and style ~= "" then
             if width and width ~= "" then
-                if trace_names then
-                    logs.report("fonts","resolving stage %s, name '%s', weight '%s', style '%s', width '%s'",stage,name,weight,style,width)
+                if variant and variant ~= "" then
+                    if trace_names then
+                        logs.report("fonts","resolving stage %s, name '%s', weight '%s', style '%s', width '%s', variant '%s'",stage,name,weight,style,width,variant)
+                    end
+                    s_collect_weight_style_width_variant(found,done,all,weight,style,width,variant,family)
+                    m_collect_weight_style_width_variant(found,done,all,weight,style,width,variant,families,sorted,strictname)
+                else
+                    if trace_names then
+                        logs.report("fonts","resolving stage %s, name '%s', weight '%s', style '%s', width '%s'",stage,name,weight,style,width)
+                    end
+                    s_collect_weight_style_width(found,done,all,weight,style,width,family)
+                    m_collect_weight_style_width(found,done,all,weight,style,width,families,sorted,strictname)
                 end
-                s_collect_weight_style_width(found,done,all,weight,style,width,family)
-                m_collect_weight_style_width(found,done,all,weight,style,width,families,sorted,strictname)
             else
                 if trace_names then
                     logs.report("fonts","resolving stage %s, name '%s', weight '%s', style '%s'",stage,name,weight,style)
@@ -1148,23 +1203,28 @@ local function collect(stage,found,done,name,weight,style,width,all)
     end
 end
 
-function heuristic(name,weight,style,width,all) -- todo: fallbacks
+function heuristic(name,weight,style,width,variant,all) -- todo: fallbacks
     local found, done = { }, { }
-    weight, style = weight or "", style or ""
+--~ print(name,weight,style,width,variant)
+    weight, style, width, variant = weight or "normal", style or "normal", width or "normal", variant or "normal"
     name = cleanname(name)
-    collect(1,found,done,name,weight,style,width,all)
+    collect(1,found,done,name,weight,style,width,variant,all)
     -- still needed ?
-    if #found == 0 and width ~= "" then
-        width = ""
-        collect(2,found,done,name,weight,style,width,all)
+    if #found == 0 and variant ~= "normal" then -- not weight
+        variant = "normal"
+        collect(4,found,done,name,weight,style,width,variant,all)
+    end
+    if #found == 0 and width ~= "normal" then
+        width = "normal"
+        collect(2,found,done,name,weight,style,width,variant,all)
     end
-    if #found == 0 and weight ~= "" then -- not style
-        weight = ""
-        collect(3,found,done,name,weight,style,width,all)
+    if #found == 0 and weight ~= "normal" then -- not style
+        weight = "normal"
+        collect(3,found,done,name,weight,style,width,variant,all)
     end
-    if #found == 0 and style ~= "" then -- not weight
-        style = ""
-        collect(4,found,done,name,weight,style,width,all)
+    if #found == 0 and style ~= "normal" then -- not weight
+        style = "normal"
+        collect(4,found,done,name,weight,style,width,variant,all)
     end
     --
     local nf = #found
@@ -1186,13 +1246,13 @@ function heuristic(name,weight,style,width,all) -- todo: fallbacks
     end
 end
 
-function names.specification(askedname,weight,style,width,reload,all)
+function names.specification(askedname,weight,style,width,variant,reload,all)
     if askedname and askedname ~= "" and names.enabled then
         askedname = lower(askedname) -- or cleanname
         names.load(reload)
-        local found = heuristic(askedname,weight,style,width,all)
+        local found = heuristic(askedname,weight,style,width,variant,all)
         if not found and is_reloaded() then
-            found = heuristic(askedname,weight,style,width,all)
+            found = heuristic(askedname,weight,style,width,variant,all)
             if not filename then
                 found = foundname(askedname) -- old method
             end
@@ -1201,21 +1261,21 @@ function names.specification(askedname,weight,style,width,reload,all)
     end
 end
 
-function names.collect(askedname,weight,style,width,reload,all)
+function names.collect(askedname,weight,style,width,variant,reload,all)
     if askedname and askedname ~= "" and names.enabled then
         askedname = lower(askedname) -- or cleanname
         names.load(reload)
-        local list = heuristic(askedname,weight,style,width,true)
+        local list = heuristic(askedname,weight,style,width,variant,true)
         if not list or #list == 0 and is_reloaded() then
-            list = heuristic(askedname,weight,style,width,true)
+            list = heuristic(askedname,weight,style,width,variant,true)
         end
         return list
     end
 end
 
 function names.collectspec(askedname,reload,all)
-    local name, weight, style, width = names.splitspec(askedname)
-    return names.collect(name,weight,style,width,reload,all)
+    local name, weight, style, width, variant = names.splitspec(askedname)
+    return names.collect(name,weight,style,width,variant,reload,all)
 end
 
 function names.resolvespec(askedname,sub)
diff --git a/tex/context/base/font-tfm.lua b/tex/context/base/font-tfm.lua
index c5140ff7c..2f96de44f 100644
--- a/tex/context/base/font-tfm.lua
+++ b/tex/context/base/font-tfm.lua
@@ -228,12 +228,27 @@ local charactercache = { }
 -- a virtual font has italic correction make sure to set the
 -- has_italic flag. Some more flags will be added in the future.
 
-function tfm.do_scale(tfmtable, scaledpoints)
- -- tfm.prepare_base_kerns(tfmtable) -- optimalization
+
+function tfm.calculate_scale(tfmtable, scaledpoints, relativeid)
     if scaledpoints < 0 then
         scaledpoints = (- scaledpoints/1000) * tfmtable.designsize -- already in sp
     end
     local delta = scaledpoints/(tfmtable.units or 1000) -- brr, some open type fonts have 2048
+    return scaledpoints, delta
+end
+
+function tfm.do_scale(tfmtable, scaledpoints, relativeid)
+ -- tfm.prepare_base_kerns(tfmtable) -- optimalization
+    local scaledpoints, delta = tfm.calculate_scale(tfmtable, scaledpoints, relativeid)
+    if enable_auto_r_scale and relativeid then -- for the moment this is rather context specific
+        local relativedata = fontdata[relativeid]
+        local id_x_height = relativedata and relativedata.parameters and relativedata.parameters.x_height
+        local tf_x_height = id_x_height and tfmtable.parameters and tfmtable.parameters.x_height * delta
+        if tf_x_height then
+            scaledpoints = (id_x_height/tf_x_height) * scaledpoints
+            delta = scaledpoints/(tfmtable.units or 1000)
+        end
+    end
     local hdelta, vdelta = delta, delta
     local t = { }
     -- unicoded unique descriptions shared cidinfo characters changed parameters indices
@@ -628,8 +643,8 @@ end
 function tfm.cleanup(tfmdata) -- we need a cleanup callback, now we miss the last one
 end
 
-function tfm.scale(tfmtable, scaledpoints)
-    local t, factor = tfm.do_scale(tfmtable, scaledpoints)
+function tfm.scale(tfmtable, scaledpoints, relativeid)
+    local t, factor = tfm.do_scale(tfmtable, scaledpoints, relativeid)
     t.factor    = factor
     t.ascender  = factor*(tfmtable.ascender  or 0)
     t.descender = factor*(tfmtable.descender or 0)
diff --git a/tex/context/base/luat-dum.lua b/tex/context/base/luat-dum.lua
index dd5ade7a9..ceda2d923 100644
--- a/tex/context/base/luat-dum.lua
+++ b/tex/context/base/luat-dum.lua
@@ -23,6 +23,11 @@ trackers = {
     enable        = dummyfunction,
     disable       = dummyfunction,
 }
+experiments = {
+    register      = dummyfunction,
+    enable        = dummyfunction,
+    disable       = dummyfunction,
+}
 storage = {
     register      = dummyfunction,
     shared        = { },
diff --git a/tex/context/base/mult-sys.tex b/tex/context/base/mult-sys.tex
index 9653356d7..701cb23dd 100644
--- a/tex/context/base/mult-sys.tex
+++ b/tex/context/base/mult-sys.tex
@@ -217,6 +217,7 @@
 \definesystemconstant  {mapping}
 \definesystemconstant  {language}
 \definesystemconstant  {patterns}
+\definesystemconstant  {rname}
 \definesystemconstant  {rscale}
 \definesystemconstant  {handling}
 \definesystemconstant  {features}
diff --git a/tex/generic/context/luatex-fonts-merged.lua b/tex/generic/context/luatex-fonts-merged.lua
index 5b3ecc9d0..b6e57ed2a 100644
--- a/tex/generic/context/luatex-fonts-merged.lua
+++ b/tex/generic/context/luatex-fonts-merged.lua
@@ -1,6 +1,6 @@
 -- merged file : c:/data/develop/context/texmf/tex/generic/context/luatex-fonts-merged.lua
 -- parent file : c:/data/develop/context/texmf/tex/generic/context/luatex-fonts.lua
--- merge date  : 02/01/10 11:23:44
+-- merge date  : 02/02/10 23:13:26
 
 do -- begin closure to overcome local limits and interference
 
@@ -1922,6 +1922,11 @@ trackers = {
     enable        = dummyfunction,
     disable       = dummyfunction,
 }
+experiments = {
+    register      = dummyfunction,
+    enable        = dummyfunction,
+    disable       = dummyfunction,
+}
 storage = {
     register      = dummyfunction,
     shared        = { },
@@ -3559,12 +3564,27 @@ local charactercache = { }
 -- a virtual font has italic correction make sure to set the
 -- has_italic flag. Some more flags will be added in the future.
 
-function tfm.do_scale(tfmtable, scaledpoints)
- -- tfm.prepare_base_kerns(tfmtable) -- optimalization
+
+function tfm.calculate_scale(tfmtable, scaledpoints, relativeid)
     if scaledpoints < 0 then
         scaledpoints = (- scaledpoints/1000) * tfmtable.designsize -- already in sp
     end
     local delta = scaledpoints/(tfmtable.units or 1000) -- brr, some open type fonts have 2048
+    return scaledpoints, delta
+end
+
+function tfm.do_scale(tfmtable, scaledpoints, relativeid)
+ -- tfm.prepare_base_kerns(tfmtable) -- optimalization
+    local scaledpoints, delta = tfm.calculate_scale(tfmtable, scaledpoints, relativeid)
+    if enable_auto_r_scale and relativeid then -- for the moment this is rather context specific
+        local relativedata = fontdata[relativeid]
+        local id_x_height = relativedata and relativedata.parameters and relativedata.parameters.x_height
+        local tf_x_height = id_x_height and tfmtable.parameters and tfmtable.parameters.x_height * delta
+        if tf_x_height then
+            scaledpoints = (id_x_height/tf_x_height) * scaledpoints
+            delta = scaledpoints/(tfmtable.units or 1000)
+        end
+    end
     local hdelta, vdelta = delta, delta
     local t = { }
     -- unicoded unique descriptions shared cidinfo characters changed parameters indices
@@ -3959,8 +3979,8 @@ end
 function tfm.cleanup(tfmdata) -- we need a cleanup callback, now we miss the last one
 end
 
-function tfm.scale(tfmtable, scaledpoints)
-    local t, factor = tfm.do_scale(tfmtable, scaledpoints)
+function tfm.scale(tfmtable, scaledpoints, relativeid)
+    local t, factor = tfm.do_scale(tfmtable, scaledpoints, relativeid)
     t.factor    = factor
     t.ascender  = factor*(tfmtable.ascender  or 0)
     t.descender = factor*(tfmtable.descender or 0)
@@ -7121,7 +7141,7 @@ function tfm.read_from_open_type(specification)
                 end
             end
         end
-        tfmtable = tfm.scale(tfmtable,s)
+        tfmtable = tfm.scale(tfmtable,s,specification.relativeid)
      -- here we resolve the name; file can be relocated, so this info is not in the cache
         local filename = (otfdata and otfdata.luatex and otfdata.luatex.filename) or specification.filename
         if not filename then
-- 
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