2020-08-27 19:27:00

25 files changed, 1381 insertions, 82 deletions

diff --git a/doc/context/documents/general/manuals/luametatex.pdf b/doc/context/documents/general/manuals/luametatex.pdf
index d1e920204..25bd874ae 100644
--- a/doc/context/documents/general/manuals/luametatex.pdf
+++ b/doc/context/documents/general/manuals/luametatex.pdf
diff --git a/doc/context/sources/general/manuals/luametatex/luametatex.tex b/doc/context/sources/general/manuals/luametatex/luametatex.tex
index e1e22c482..debfdb358 100644
--- a/doc/context/sources/general/manuals/luametatex/luametatex.tex
+++ b/doc/context/sources/general/manuals/luametatex/luametatex.tex
@@ -50,9 +50,7 @@
 % Thanks to sebastian.miele@gmail.com for close reading the manual and
 % sending fixes.
 
-% \enabledirectives[system.usage]
-
-% \enabletrackers[*]
+\enabletrackers[system.usage=summary]
 
 \environment luametatex-style
 \environment luametatex-private
diff --git a/tex/context/base/mkii/cont-new.mkii b/tex/context/base/mkii/cont-new.mkii
index 3d592f4ed..20642a907 100644
--- a/tex/context/base/mkii/cont-new.mkii
+++ b/tex/context/base/mkii/cont-new.mkii
@@ -11,7 +11,7 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
-\newcontextversion{2020.08.25 19:56}
+\newcontextversion{2020.08.27 19:25}
 
 %D This file is loaded at runtime, thereby providing an
 %D excellent place for hacks, patches, extensions and new
diff --git a/tex/context/base/mkii/context.mkii b/tex/context/base/mkii/context.mkii
index 7c22b1c87..16de426df 100644
--- a/tex/context/base/mkii/context.mkii
+++ b/tex/context/base/mkii/context.mkii
@@ -20,7 +20,7 @@
 %D your styles an modules.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2020.08.25 19:56}
+\edef\contextversion{2020.08.27 19:25}
 
 %D For those who want to use this:
 
diff --git a/tex/context/base/mkiv/cont-new.mkiv b/tex/context/base/mkiv/cont-new.mkiv
index 40c3c3272..fc27b0538 100644
--- a/tex/context/base/mkiv/cont-new.mkiv
+++ b/tex/context/base/mkiv/cont-new.mkiv
@@ -13,7 +13,7 @@
 
 % \normalend % uncomment this to get the real base runtime
 
-\newcontextversion{2020.08.25 19:56}
+\newcontextversion{2020.08.27 19:25}
 
 %D This file is loaded at runtime, thereby providing an excellent place for hacks,
 %D patches, extensions and new features. There can be local overloads in cont-loc
@@ -21,6 +21,9 @@
 %D so old that I need to remind myself to check it occasionally, so here is the
 %D reminder).
 
+% \enabletrackers[pages.timing]
+% \enabletrackers[system.usage=summary]
+
 \unprotect
 
 \writestatus\m!system{beware: some patches loaded from cont-new.mkiv}
diff --git a/tex/context/base/mkiv/context.mkiv b/tex/context/base/mkiv/context.mkiv
index 092b16960..5164ea5dd 100644
--- a/tex/context/base/mkiv/context.mkiv
+++ b/tex/context/base/mkiv/context.mkiv
@@ -45,7 +45,7 @@
 %D {YYYY.MM.DD HH:MM} format.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2020.08.25 19:56}
+\edef\contextversion{2020.08.27 19:25}
 
 %D Kind of special:
 
diff --git a/tex/context/base/mkiv/context.mkxl b/tex/context/base/mkiv/context.mkxl
index 5c6ded5c9..e7d0ffdfd 100644
--- a/tex/context/base/mkiv/context.mkxl
+++ b/tex/context/base/mkiv/context.mkxl
@@ -29,7 +29,7 @@
 %D {YYYY.MM.DD HH:MM} format.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2020.08.25 19:56}
+\edef\contextversion{2020.08.27 19:25}
 
 %D Kind of special:
 
diff --git a/tex/context/base/mkiv/font-cff.lua b/tex/context/base/mkiv/font-cff.lua
index c2cf0e699..b7d45392d 100644
--- a/tex/context/base/mkiv/font-cff.lua
+++ b/tex/context/base/mkiv/font-cff.lua
@@ -610,15 +610,15 @@ do
       + p_unsupported
     )^1
 
-    parsedictionaries = function(data,dictionaries,what)
+    parsedictionaries = function(data,dictionaries,version)
         stack   = { }
         strings = data.strings
         if trace_charstrings then
-            report("charstring format %a",what)
+            report("charstring format %a",version)
         end
         for i=1,#dictionaries do
             top    = 0
-            result = what == "cff" and {
+            result = version == "cff" and {
                 monospaced         = false,
                 italicangle        = 0,
                 underlineposition  = -100,
@@ -2265,8 +2265,8 @@ do
 
 end
 
-local function readglobals(f,data)
-    local routines = readlengths(f)
+local function readglobals(f,data,version)
+    local routines = readlengths(f,version == "cff2")
     for i=1,#routines do
         routines[i] = readbytetable(f,routines[i])
     end
@@ -2324,14 +2324,14 @@ local function readprivates(f,data)
     end
 end
 
-local function readlocals(f,data,dictionary)
+local function readlocals(f,data,dictionary,version)
     local header  = data.header
     local private = dictionary.private
     if private then
         local subroutineoffset = private.data.subroutines
         if subroutineoffset ~= 0 then
             setposition(f,header.offset+private.offset+subroutineoffset)
-            local subroutines = readlengths(f)
+            local subroutines = readlengths(f,version == "cff2")
             for i=1,#subroutines do
                 subroutines[i] = readbytetable(f,subroutines[i])
             end
@@ -2348,7 +2348,7 @@ end
 -- These charstrings are little programs and described in: Technical Note #5177. A truetype
 -- font has only one dictionary.
 
-local function readcharstrings(f,data,what)
+local function readcharstrings(f,data,version)
     local header       = data.header
     local dictionaries = data.dictionaries
     local dictionary   = dictionaries[1]
@@ -2359,7 +2359,7 @@ local function readcharstrings(f,data,what)
     elseif stringtype == 2 then
         setposition(f,header.offset+offset)
         -- could be a metatable .. delayed loading
-        local charstrings = readlengths(f,what=="cff2")
+        local charstrings = readlengths(f,version=="cff2")
         local nofglyphs   = #charstrings
         for i=1,nofglyphs do
             charstrings[i] = readstring(f,charstrings[i])
@@ -2394,7 +2394,8 @@ readers.parsecharstrings = parsecharstrings -- used in font-onr.lua (type 1)
 local function readnoselect(f,fontdata,data,glyphs,doshapes,version,streams)
     local dictionaries = data.dictionaries
     local dictionary   = dictionaries[1]
-    readglobals(f,data)
+    local cid          = not dictionary.private and dictionary.cid
+    readglobals(f,data,version)
     readcharstrings(f,data,version)
     if version == "cff2" then
         dictionary.charset = nil
@@ -2402,9 +2403,27 @@ local function readnoselect(f,fontdata,data,glyphs,doshapes,version,streams)
         readencodings(f,data)
         readcharsets(f,data,dictionary)
     end
+    if cid then
+        local fdarray = cid.fdarray
+        if fdarray then
+            setposition(f,data.header.offset + fdarray)
+            local dictionaries    = readlengths(f,version=="cff2")
+            local nofdictionaries = #dictionaries
+            if nofdictionaries > 0 then
+                for i=1,nofdictionaries do
+                    dictionaries[i] = readstring(f,dictionaries[i])
+                end
+                parsedictionaries(data,dictionaries)
+                dictionary.private = dictionaries[1].private
+                if nofdictionaries > 1 then
+                    report("ignoring dictionaries > 1 in cid font")
+                end
+            end
+        end
+    end
     readprivates(f,data)
     parseprivates(data,data.dictionaries)
-    readlocals(f,data,dictionary)
+    readlocals(f,data,dictionary,version)
     startparsing(fontdata,data,streams)
     parsecharstrings(fontdata,data,glyphs,doshapes,version,streams)
     stopparsing(fontdata,data)
@@ -2416,7 +2435,7 @@ local function readfdselect(f,fontdata,data,glyphs,doshapes,version,streams)
     local dictionary   = dictionaries[1]
     local cid          = dictionary.cid
     local cidselect    = cid and cid.fdselect
-    readglobals(f,data)
+    readglobals(f,data,version)
     readcharstrings(f,data,version)
     if version ~= "cff2" then
         readencodings(f,data)
@@ -2462,7 +2481,7 @@ local function readfdselect(f,fontdata,data,glyphs,doshapes,version,streams)
         local cidarray = cid.fdarray
         if cidarray then
             setposition(f,header.offset+cidarray)
-            local dictionaries = readlengths(f)
+            local dictionaries = readlengths(f,version == "cff2")
             for i=1,#dictionaries do
                 dictionaries[i] = readstring(f,dictionaries[i])
             end
@@ -2470,7 +2489,7 @@ local function readfdselect(f,fontdata,data,glyphs,doshapes,version,streams)
             cid.dictionaries = dictionaries
             readcidprivates(f,data)
             for i=1,#dictionaries do
-                readlocals(f,data,dictionaries[i])
+                readlocals(f,data,dictionaries[i],version)
             end
             startparsing(fontdata,data,streams)
             for i=1,#charstrings do
diff --git a/tex/context/base/mkiv/font-con.lua b/tex/context/base/mkiv/font-con.lua
index 495148341..7162338c6 100644
--- a/tex/context/base/mkiv/font-con.lua
+++ b/tex/context/base/mkiv/font-con.lua
@@ -451,6 +451,7 @@ function constructors.scale(tfmdata,specification)
     target.format        = properties.format
     target.cache         = constructors.cacheintex and "yes" or "renew"
     --
+    local original = properties.original or tfmdata.original
     local fontname = properties.fontname or tfmdata.fontname
     local fullname = properties.fullname or tfmdata.fullname
     local filename = properties.filename or tfmdata.filename
@@ -462,6 +463,7 @@ function constructors.scale(tfmdata,specification)
     --
     local psname, psfixed = fixedpsname(psname,fontname or fullname or file.nameonly(filename))
     --
+    target.original = original
     target.fontname = fontname
     target.fullname = fullname
     target.filename = filename
diff --git a/tex/context/base/mkiv/font-ctx.lua b/tex/context/base/mkiv/font-ctx.lua
index e6ed58492..eec967c1c 100644
--- a/tex/context/base/mkiv/font-ctx.lua
+++ b/tex/context/base/mkiv/font-ctx.lua
@@ -1221,6 +1221,7 @@ do  -- else too many locals
              -- ctx_setemptyfontsize()
             end
             specification = definers.makespecification(str,lookup,name,sub,method,detail,size)
+-- specification.original = str
             if trace_defining then
                 report_defining("stop stage one")
             end
@@ -1239,11 +1240,6 @@ do  -- else too many locals
         combinefeatures = v
     end)
 
-
-
-
-
-
     implement {
         name      = "definefont_two",
         arguments = {
@@ -1269,7 +1265,6 @@ do  -- else too many locals
                         fontdesignsize,  -- \m_font_designsize
                         scaledfontmode   -- \scaledfontmode
                     )
-
             if trace_defining then
                 report_defining("start stage two: %s, size %s, features %a & %a, mode %a",str,size,classfeatures,fontfeatures,inheritancemode)
             end
@@ -1424,6 +1419,7 @@ do  -- else too many locals
                     context(function()
                         busy = false
                         mathematics.finishfallbacks(tfmdata,specification,fallbacks)
+tfmdata.original = specification.specification
                         local id = definefont(tfmdata)
                         csnames[id] = specification.cs
                         properties.id = id
@@ -1461,6 +1457,7 @@ do  -- else too many locals
                     end)
                     return
                 else
+tfmdata.original = specification.specification
                     local id = definefont(tfmdata)
                     csnames[id] = specification.cs
                     properties.id = id
diff --git a/tex/context/base/mkiv/font-def.lua b/tex/context/base/mkiv/font-def.lua
index 09f2e2c32..b752b3258 100644
--- a/tex/context/base/mkiv/font-def.lua
+++ b/tex/context/base/mkiv/font-def.lua
@@ -489,7 +489,9 @@ function definers.read(specification,size,id) -- id can be optional, name can al
         end
     else
         tfmdata = definers.loadfont(specification) -- can be overloaded
+-- put in properties instead
         if tfmdata then
+            tfmdata.original = specification.specification
             if trace_defining then
                 report_defining("loaded and hashed: %s",hash)
             end
diff --git a/tex/context/base/mkiv/node-aux.lmt b/tex/context/base/mkiv/node-aux.lmt
new file mode 100644
index 000000000..9e7c02028
--- /dev/null
+++ b/tex/context/base/mkiv/node-aux.lmt
@@ -0,0 +1,396 @@
+if not modules then modules = { } end modules ['node-aux'] = {
+    version   = 1.001,
+    comment   = "companion to node-ini.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+-- todo: n1 .. n2 : __concat metatable
+
+local type, tostring = type, tostring
+
+local nodes              = nodes
+local context            = context
+
+local utfvalues          = utf.values
+
+local nodecodes          = nodes.nodecodes
+
+local glyph_code         = nodecodes.glyph
+local hlist_code         = nodecodes.hlist
+local vlist_code         = nodecodes.vlist
+local attributelist_code = nodecodes.attributelist -- temporary
+local localpar_code      = nodecodes.localpar
+
+local nuts               = nodes.nuts
+local tonut              = nuts.tonut
+local tonode             = nuts.tonode
+local vianuts            = nuts.vianuts
+
+local getbox             = nuts.getbox
+local getnext            = nuts.getnext
+local getid              = nuts.getid
+local getsubtype         = nuts.getsubtype
+local getlist            = nuts.getlist
+local getattr            = nuts.getattr
+local getboth            = nuts.getboth
+local getprev            = nuts.getprev
+local getwidth           = nuts.getwidth
+local setwidth           = nuts.setwidth
+local getboxglue         = nuts.getboxglue
+local setboxglue         = nuts.setboxglue
+
+local setfield           = nuts.setfield
+local setattr            = nuts.setattr
+local setlink            = nuts.setlink
+local setlist            = nuts.setlist
+local setnext            = nuts.setnext
+local setprev            = nuts.setprev
+local setattrlist        = nuts.setattrlist
+
+local traversers         = nuts.traversers
+local nextnode           = traversers.node
+local nextglyph          = traversers.glyph
+
+local flush_node         = nuts.flush
+local flush_list         = nuts.flush_list
+local hpack_nodes        = nuts.hpack
+local unset_attribute    = nuts.unset_attribute
+local first_glyph        = nuts.first_glyph
+local copy_node          = nuts.copy
+local find_tail          = nuts.tail
+local getbox             = nuts.getbox
+local count              = nuts.count
+local isglyph            = nuts.isglyph
+
+local nodepool           = nuts.pool
+local new_glue           = nodepool.glue
+local new_glyph          = nodepool.glyph
+
+local unsetvalue         = attributes.unsetvalue
+
+local current_font       = font.current
+
+local texsetbox          = tex.setbox
+
+local report_error       = logs.reporter("node-aux:error")
+
+local function takebox(id)
+    local box = getbox(id)
+    if box then
+        local list = getlist(box)
+        setlist(box,nil)
+        local copy = copy_node(box)
+        if list then
+            setlist(copy,list)
+        end
+        texsetbox(id,false)
+        return copy
+    end
+end
+
+function nodes.takebox(id)
+    local b = takebox(id)
+    if b then
+        return tonode(b)
+    end
+end
+
+local splitbox = tex.splitbox
+nodes.splitbox = splitbox
+
+function nuts.splitbox(id,height)
+    return tonut(splitbox(id,height))
+end
+
+-- function nodes.takelist(n)
+--     -- when we need it
+-- end
+
+function nuts.takelist(n)
+    local l = getlist(n)
+    setlist(n)
+    flush_node(n)
+    return l
+end
+
+nuts.takebox = takebox
+tex.takebox  = nodes.takebox -- sometimes more clear
+
+-- so far
+
+local function repackhlist(list,...)
+    local temp, b = hpack_nodes(list,...)
+    list = getlist(temp)
+    setlist(temp)
+    flush_node(temp)
+    return list, b
+end
+
+nuts.repackhlist = repackhlist
+
+function nodes.repackhlist(list,...)
+    local list, b = repackhlist(tonut(list),...)
+    return tonode(list), b
+end
+
+local function set_attributes(head,attr,value)
+    for n, id in nextnode, head do
+        setattr(n,attr,value)
+        if id == hlist_node or id == vlist_node then
+            set_attributes(getlist(n),attr,value)
+        end
+    end
+end
+
+local function set_unset_attributes(head,attr,value)
+    for n, id in nextnode, head do
+        if not getattr(n,attr) then
+            setattr(n,attr,value)
+        end
+        if id == hlist_code or id == vlist_code then
+            set_unset_attributes(getlist(n),attr,value)
+        end
+    end
+end
+
+local function unset_attributes(head,attr)
+    for n, id in nextnode, head do
+        setattr(n,attr,unsetvalue)
+        if id == hlist_code or id == vlist_code then
+            unset_attributes(getlist(n),attr)
+        end
+    end
+end
+
+-- for old times sake
+
+nuts.setattribute        = nuts.setattr                      nodes.setattribute       = nodes.setattr
+nuts.getattribute        = nuts.getattr                      nodes.getattribute       = nodes.getattr
+nuts.unsetattribute      = nuts.unset_attribute              nodes.unsetattribute     = nodes.unset_attribute
+nuts.has_attribute       = nuts.has_attribute                nodes.has_attribute      = nodes.has_attribute
+nuts.firstglyph          = nuts.first_glyph                  nodes.firstglyph         = nodes.first_glyph
+
+nuts.setattributes       = set_attributes                    nodes.setattributes      = vianuts(set_attributes)
+nuts.setunsetattributes  = set_unset_attributes              nodes.setunsetattributes = vianuts(set_unset_attributes)
+nuts.unsetattributes     = unset_attributes                  nodes.unsetattributes    = vianuts(unset_attributes)
+
+function nuts.firstcharacter(n,untagged) -- tagged == subtype > 255
+    if untagged then
+        return first_glyph(n)
+    else
+        for g in nextglyph ,n do
+            return g
+        end
+    end
+end
+
+local function firstcharinbox(n)
+    local l = getlist(getbox(n))
+    if l then
+        for g, c in nextglyph, l do
+            return c
+        end
+    end
+    return 0
+end
+
+nuts .firstcharinbox = firstcharinbox
+nodes.firstcharinbox = firstcharinbox -- hm, ok ?
+nodes.firstcharacter = vianuts(firstcharacter)
+
+interfaces.implement {
+    name      = "buildtextaccent",
+    arguments = "integer",
+    actions   = function(n) -- Is this crap really used? Or was it an experiment?
+        local char = firstcharinbox(n)
+        if char > 0 then
+         -- context.accent(false,char)
+            context([[\accent%s\relax]],char)
+        end
+    end
+}
+
+-- this depends on fonts, so we have a funny dependency ... will be
+-- sorted out .. we could make tonodes a plugin into this
+
+local function tonodes(str,fnt,attr) -- (str,template_glyph) -- moved from blob-ini
+    if not str or str == "" then
+        return
+    end
+    local head, tail, space, fnt, template = nil, nil, nil, nil, nil
+    if not fnt then
+        fnt = current_font()
+    elseif type(fnt) ~= "number" and getid(fnt) == glyph_code then -- so it has to be a real node
+        fnt, template = nil, tonut(fnt)
+    end
+    for s in utfvalues(str) do
+        local n
+        if s == 32 then
+            if space then
+                n = copy_node(space)
+            elseif fonts then -- depedency
+                local parameters = fonts.hashes.identifiers[fnt].parameters
+                space = new_glue(parameters.space,parameters.space_stretch,parameters.space_shrink)
+                n = space
+            end
+        elseif template then
+            n = copy_node(template)
+            setvalue(n,"char",s)
+        else
+            n = new_glyph(fnt,s)
+        end
+        if attr then -- normally false when template
+            setattrlist(n,attr)
+        end
+        if head then
+            setlink(tail,n)
+        else
+            head = n
+        end
+        tail = n
+    end
+    return head, tail
+end
+
+nuts.tonodes = tonodes
+
+nodes.tonodes = function(str,fnt,attr)
+    local head, tail = tonodes(str,fnt,attr)
+    return tonode(head), tonode(tail)
+end
+
+local function link(list,currentfont,currentattr,head,tail) -- an oldie, might be replaced
+    for i=1,#list do
+        local n = list[i]
+        if n then
+            local tn = type(n)
+            if tn == "string" then
+                if #tn > 0 then
+                    if not currentfont then
+                        currentfont = current_font()
+                    end
+                    local h, t = tonodes(n,currentfont,currentattr)
+                    if not h then
+                        -- skip
+                    elseif not head then
+                        head, tail = h, t
+                    else
+                        setnext(tail,h)
+                        setprev(h,t)
+                        tail = t
+                    end
+                end
+            elseif tn == "table" then
+                if #tn > 0 then
+                    if not currentfont then
+                        currentfont = current_font()
+                    end
+                    head, tail = link(n,currentfont,currentattr,head,tail)
+                end
+            elseif not head then
+                head = n
+                tail = find_tail(n)
+            elseif getid(n) == attributelist_code then
+                -- weird case
+                report_error("weird node type in list at index %s:",i)
+                for i=1,#list do
+                    local l = list[i]
+                    report_error("%3i: %s %S",i,getid(l) == attributelist_code and "!" or ">",l)
+                end
+                os.exit()
+            else
+                setlink(tail,n)
+                if getnext(n) then
+                    tail = find_tail(n)
+                else
+                    tail = n
+                end
+            end
+        else
+            -- permitting nil is convenient
+        end
+    end
+    return head, tail
+end
+
+nuts.link = link
+
+nodes.link = function(list,currentfont,currentattr,head,tail)
+    local head, tail = link(list,currentfont,currentattr,tonut(head),tonut(tail))
+    return tonode(head), tonode(tail)
+end
+
+local function locate(start,wantedid,wantedsubtype)
+    for n, id, subtype in nextnode, start do
+        if id == wantedid then
+            if not wantedsubtype or subtype == wantedsubtype then
+                return n
+            end
+        elseif id == hlist_code or id == vlist_code then
+            local found = locate(getlist(n),wantedid,wantedsubtype)
+            if found then
+                return found
+            end
+        end
+    end
+end
+
+nuts.locate = locate
+
+function nodes.locate(start,wantedid,wantedsubtype)
+    local found = locate(tonut(start),wantedid,wantedsubtype)
+    return found and tonode(found)
+end
+
+local function rehpack(n,width)
+    local head = getlist(n)
+    local size = width or getwidth(n)
+    local temp = hpack_nodes(head,size,"exactly")
+    setwidth(n,size)
+    local set, order, sign = getboxglue(temp)
+    setboxglue(n,set,order,sign)
+    setlist(temp)
+    flush_node(temp)
+    return n
+end
+
+nuts.rehpack = rehpack
+
+function nodes.rehpack(n,...)
+    rehpack(tonut(n),...)
+end
+
+do
+
+    local localparcodes = nodes.localparcodes
+    local hmodepar_code = localparcodes.vmode_par
+    local vmodepar_code = localparcodes.hmode_par
+
+    local getnest       = tex.getnest
+    local getsubtype    = nuts.getsubtype
+
+    function nuts.setparproperty(action,...)
+        local tail = tonut(getnest().tail)
+        while tail do
+            if getid(tail) == localpar_code then
+                local s = getsubtype(tail)
+                if s == hmodepar_code or s == vmodepar_code then
+                    return action(tail,...)
+                else
+                    -- something is wrong here
+                end
+            end
+            tail = getprev(tail)
+        end
+    end
+
+    local getsubtype = nodes.getsubtype
+
+    function nodes.start_of_par(n)
+        local s = getsubtype(n)
+        return s == hmodepar_code or s == vmodepar_code
+    end
+
+end
diff --git a/tex/context/base/mkiv/node-aux.lua b/tex/context/base/mkiv/node-aux.lua
index 407ebb09c..aa7dc0292 100644
--- a/tex/context/base/mkiv/node-aux.lua
+++ b/tex/context/base/mkiv/node-aux.lua
@@ -413,10 +413,7 @@ do
 
 end
 
--- Currently only in luametatex ... experimental anyway .. if it doesn't end
--- up in luatex I'll move this to a different module.
-
-do
+if not nuts.getnormalizedline then
 
     local nextnode           = traversers.glue
     local findfail           = nuts.tail
@@ -459,9 +456,7 @@ do
 
     nuts.find_node = find_node
 
- -- if CONTEXTLMTXMODE then ... end
-
-    nuts.getnormalizedline = direct.getnormalizedline or function(h)
+    function nuts.getnormalizedline(h)
         if getid(h) == hlist_code and getsubtype(h) == line_code then
             local ls, rs = 0, 0
             local lh, rh = 0, 0
diff --git a/tex/context/base/mkiv/node-ini.lmt b/tex/context/base/mkiv/node-ini.lmt
new file mode 100644
index 000000000..2f0b98e88
--- /dev/null
+++ b/tex/context/base/mkiv/node-ini.lmt
@@ -0,0 +1,287 @@
+if not modules then modules = { } end modules ['node-ini'] = {
+    version   = 1.001,
+    comment   = "companion to node-ini.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+--[[ldx--
+<p>Most of the code that had accumulated here is now separated in modules.</p>
+--ldx]]--
+
+local next, type, tostring = next, type, tostring
+local gsub = string.gsub
+local concat, remove = table.concat, table.remove
+local sortedhash, sortedkeys, swapped = table.sortedhash, table.sortedkeys, table.swapped
+
+--[[ldx--
+<p>Access to nodes is what gives <l n='luatex'/> its power. Here we implement a
+few helper functions. These functions are rather optimized.</p>
+--ldx]]--
+
+nodes               = nodes or { }
+local nodes         = nodes
+nodes.handlers      = nodes.handlers or { }
+
+local mark          = utilities.storage.mark
+local allocate      = utilities.storage.allocate
+local formatcolumns = utilities.formatters.formatcolumns
+
+local getsubtypes   = node.subtypes
+local getvalues     = node.values
+
+tex.magicconstants = { -- we use tex.constants for something else
+    running  = -1073741824, -- null_flag
+    maxdimen =  1073741823, -- max_dimen
+    trueinch =     4736286,
+}
+
+local listcodes     = mark(getsubtypes("list"))
+local rulecodes     = mark(getsubtypes("rule"))
+local dircodes      = mark(getsubtypes("dir"))
+local glyphcodes    = mark(getsubtypes("glyph"))
+local disccodes     = mark(getsubtypes("disc"))
+local gluecodes     = mark(getsubtypes("glue"))
+local leadercodes   = mark(getsubtypes("leader"))
+local fillcodes     = mark(getsubtypes("fill"))
+local boundarycodes = mark(getsubtypes("boundary"))
+local penaltycodes  = mark(getsubtypes("penalty"))
+local kerncodes     = mark(getsubtypes("kern"))
+local mathcodes     = mark(getsubtypes("math"))
+local noadcodes     = mark(getsubtypes("noad"))
+local radicalcodes  = mark(getsubtypes("radical"))
+local accentcodes   = mark(getsubtypes("accent"))
+local fencecodes    = mark(getsubtypes("fence"))
+----- fractioncodes = mark(getsubtypes("fraction"))
+local localparcodes = CONTEXTLMTXMODE > 0 and mark(getsubtypes("localpar"))
+
+if not localparcodes then
+    localparcodes = allocate { [0] = "new_graf", "local_box", "hmode_par", "penalty", "math" }
+end
+
+local function simplified(t)
+    local r = { }
+    for k, v in next, t do
+        r[k] = gsub(v,"_","")
+    end
+    return r
+end
+
+local nodecodes = simplified(node.types())
+local whatcodes = simplified(node.whatsits and node.whatsits() or { })
+
+local dirvalues  = mark(getvalues("dir"))
+local gluevalues = mark(getvalues("glue"))
+
+local whatcodes = {
+    literal     = 0x1, [0x1] = "literal",
+    latelua     = 0x2, [0x2] = "latelua",
+    userdefined = 0x3, [0x3] = "userdefined",
+    savepos     = 0x4, [0x4] = "savepos",
+    save        = 0x5, [0x5] = "save",
+    restore     = 0x6, [0x6] = "restore",
+    setmatrix   = 0x7, [0x7] = "setmatrix",
+    open        = 0x8, [0x8] = "open",
+    close       = 0x9, [0x9] = "close",
+    write       = 0xA, [0xA] = "write",
+}
+
+local usercodes = allocate {
+    [ 97] = "attribute", -- a
+    [100] = "number",    -- d
+    [102] = "float",     -- f
+    [108] = "lua",       -- l
+    [110] = "node",      -- n
+    [115] = "string",    -- s
+    [116] = "token"      -- t
+}
+
+local noadoptions = allocate {
+    set      =        0x08,
+    unused_1 = 0x00 + 0x08,
+    unused_2 = 0x01 + 0x08,
+    axis     = 0x02 + 0x08,
+    no_axis  = 0x04 + 0x08,
+    exact    = 0x10 + 0x08,
+    left     = 0x11 + 0x08,
+    middle   = 0x12 + 0x08,
+    right    = 0x14 + 0x08,
+}
+
+local literalvalues = allocate {
+    [0] = "origin",
+    [1] = "page",
+    [2] = "always",
+    [3] = "raw",
+    [4] = "text",
+    [5] = "font",
+    [6] = "special",
+}
+
+gluecodes     = allocate(swapped(gluecodes,gluecodes))
+dircodes      = allocate(swapped(dircodes,dircodes))
+boundarycodes = allocate(swapped(boundarycodes,boundarycodes))
+noadcodes     = allocate(swapped(noadcodes,noadcodes))
+radicalcodes  = allocate(swapped(radicalcodes,radicalcodes))
+nodecodes     = allocate(swapped(nodecodes,nodecodes))
+whatcodes     = allocate(swapped(whatcodes,whatcodes))
+listcodes     = allocate(swapped(listcodes,listcodes))
+glyphcodes    = allocate(swapped(glyphcodes,glyphcodes))
+kerncodes     = allocate(swapped(kerncodes,kerncodes))
+penaltycodes  = allocate(swapped(penaltycodes,penaltycodes))
+mathcodes     = allocate(swapped(mathcodes,mathcodes))
+fillcodes     = allocate(swapped(fillcodes,fillcodes))
+disccodes     = allocate(swapped(disccodes,disccodes))
+accentcodes   = allocate(swapped(accentcodes,accentcodes))
+fencecodes    = allocate(swapped(fencecodes,fencecodes))
+localparcodes = allocate(swapped(localparcodes,localparcodes))
+rulecodes     = allocate(swapped(rulecodes,rulecodes))
+leadercodes   = allocate(swapped(leadercodes,leadercodes))
+usercodes     = allocate(swapped(usercodes,usercodes))
+noadoptions   = allocate(swapped(noadoptions,noadoptions))
+dirvalues     = allocate(swapped(dirvalues,dirvalues))
+gluevalues    = allocate(swapped(gluevalues,gluevalues))
+literalvalues = allocate(swapped(literalvalues,literalvalues))
+
+nodes.gluecodes     = gluecodes
+nodes.dircodes      = dircodes
+nodes.boundarycodes = boundarycodes
+nodes.noadcodes     = noadcodes
+nodes.nodecodes     = nodecodes
+nodes.whatcodes     = whatcodes
+nodes.listcodes     = listcodes
+nodes.glyphcodes    = glyphcodes
+nodes.kerncodes     = kerncodes
+nodes.penaltycodes  = penaltycodes
+nodes.mathcodes     = mathcodes
+nodes.fillcodes     = fillcodes
+nodes.disccodes     = disccodes
+nodes.accentcodes   = accentcodes
+nodes.radicalcodes  = radicalcodes
+nodes.fencecodes    = fencecodes
+nodes.localparcodes = localparcodes
+nodes.rulecodes     = rulecodes
+nodes.leadercodes   = leadercodes
+nodes.usercodes     = usercodes
+nodes.noadoptions   = noadoptions
+nodes.dirvalues     = dirvalues
+nodes.gluevalues    = gluevalues
+nodes.literalvalues = literalvalues
+
+nodes.subtypes = allocate {
+    [nodecodes.accent]   = accentcodes,
+    [nodecodes.boundary] = boundarycodes,
+    [nodecodes.dir]      = dircodes,
+    [nodecodes.disc]     = disccodes,
+    [nodecodes.fence]    = fencecodes,
+    [nodecodes.glue]     = gluecodes,
+    [nodecodes.glyph]    = glyphcodes,
+    [nodecodes.hlist]    = listcodes,
+    [nodecodes.kern]     = kerncodes,
+    [nodecodes.localpar] = localparcodes,
+    [nodecodes.math]     = mathcodes,
+    [nodecodes.noad]     = noadcodes,
+    [nodecodes.penalty]  = penaltycodes,
+    [nodecodes.radical]  = radicalcodes,
+    [nodecodes.rule]     = rulecodes,
+ -- [nodecodes.user]     = usercodes,
+    [nodecodes.vlist]    = listcodes,
+    [nodecodes.whatsit]  = whatcodes,
+}
+
+table.setmetatableindex(nodes.subtypes,function(t,k)
+    local v = { }
+    t[k] = v
+    return v
+end)
+
+-- a few more friendly aliases:
+
+nodes.skipcodes            = gluecodes
+nodes.directioncodes       = dircodes
+nodes.whatsitcodes         = whatcodes
+nodes.discretionarycodes   = disccodes
+nodes.directionvalues      = dirvalues
+nodes.skipvalues           = gluevalues
+nodes.literalvalues        = literalvalues
+
+glyphcodes.glyph           = glyphcodes.character
+
+localparcodes.vmode_par    = localparcodes.new_graf
+
+listcodes.row              = listcodes.alignment
+listcodes.column           = listcodes.alignment
+
+kerncodes.kerning          = kerncodes.fontkern
+kerncodes.italiccorrection = kerncodes.italiccorrection or 1 -- new
+
+literalvalues.direct       = literalvalues.always
+
+nodes.codes = allocate { -- mostly for listing
+    glue        = skipcodes,
+    boundary    = boundarycodes,
+    noad        = noadcodes,
+    node        = nodecodes,
+    hlist       = listcodes,
+    vlist       = listcodes,
+    glyph       = glyphcodes,
+    kern        = kerncodes,
+    penalty     = penaltycodes,
+    math        = mathnodes,
+    fill        = fillcodes,
+    disc        = disccodes,
+    whatsit     = whatcodes,
+    accent      = accentcodes,
+    fence       = fencecodes,
+    rule        = rulecodes,
+    leader      = leadercodes,
+    user        = usercodes,
+    noadoptions = noadoptions,
+}
+
+nodes.noadoptions = {
+    set      =        0x08,
+    unused_1 = 0x00 + 0x08,
+    unused_2 = 0x01 + 0x08,
+    axis     = 0x02 + 0x08,
+    no_axis  = 0x04 + 0x08,
+    exact    = 0x10 + 0x08,
+    left     = 0x11 + 0x08,
+    middle   = 0x12 + 0x08,
+    right    = 0x14 + 0x08,
+}
+
+local report_codes = logs.reporter("nodes","codes")
+
+function nodes.showcodes()
+    local t = { }
+    for name, codes in sortedhash(nodes.codes) do
+        local sorted = sortedkeys(codes)
+        for i=1,#sorted do
+            local s = sorted[i]
+            if type(s) ~= "number" then
+                t[#t+1] = { name, s, codes[s] }
+            end
+        end
+    end
+    formatcolumns(t)
+    for k=1,#t do
+        report_codes (t[k])
+    end
+end
+
+trackers.register("system.showcodes", nodes.showcodes)
+
+-- We use the real node code numbers.
+
+local texchardef = tex.chardef
+
+for i=0,nodecodes.glyph do
+    texchardef(nodecodes[i] .. "nodecode",i)
+end
+for i=0,#gluecodes do
+    texchardef(gluecodes[i] .. "subtypecode",i)
+end
+
+-- tex.set("internalcodesmode",1) -- obsolete
diff --git a/tex/context/base/mkiv/node-ini.mkiv b/tex/context/base/mkiv/node-ini.mkiv
index 2ecef4a54..8a3aa65df 100644
--- a/tex/context/base/mkiv/node-ini.mkiv
+++ b/tex/context/base/mkiv/node-ini.mkiv
@@ -21,12 +21,12 @@
     \registerctxluafile{node-cmp}{autosuffix}
 \fi
 
-\registerctxluafile{node-ini}{}
+\registerctxluafile{node-ini}{autosuffix}
 \registerctxluafile{node-met}{}
-\registerctxluafile{node-nut}{}
+\registerctxluafile{node-nut}{autosuffix}
 \registerctxluafile{node-res}{}
 %registerctxluafile{node-ppt}{} % experimental, not used so probably useless
-\registerctxluafile{node-aux}{}
+\registerctxluafile{node-aux}{autosuffix}
 \registerctxluafile{node-gcm}{autosuffix}
 \registerctxluafile{node-tst}{}
 \registerctxluafile{node-tra}{} % we might split it off (module)
diff --git a/tex/context/base/mkiv/node-met.lua b/tex/context/base/mkiv/node-met.lua
index f472d31a9..feaff70eb 100644
--- a/tex/context/base/mkiv/node-met.lua
+++ b/tex/context/base/mkiv/node-met.lua
@@ -1,4 +1,4 @@
-if not modules then modules = { } end modules ['node-nut'] = {
+if not modules then modules = { } end modules ['node-MET'] = {
     version   = 1.001,
     comment   = "companion to node-ini.mkiv",
     author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
diff --git a/tex/context/base/mkiv/node-nut.lmt b/tex/context/base/mkiv/node-nut.lmt
new file mode 100644
index 000000000..004729a3c
--- /dev/null
+++ b/tex/context/base/mkiv/node-nut.lmt
@@ -0,0 +1,572 @@
+if not modules then modules = { } end modules ['node-nut'] = {
+    version   = 1.001,
+    comment   = "companion to node-ini.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+-- Some comments anbout going nuts can be found in the mkiv file with the
+-- suffix "lua", including some timing and musings. We copy the direct table
+-- (1) because that's what we did while things evolved and (2) because we
+-- also add some more helpers.
+
+local type, rawget = type, rawget
+
+local nodes           = nodes
+local direct          = node.direct
+
+local fastcopy        = table.fastcopy
+
+local nodecodes       = nodes.nodecodes
+local hlist_code      = nodecodes.hlist
+local vlist_code      = nodecodes.vlist
+local glyph_code      = nodecodes.glyph
+
+local tonode          = direct.tonode
+local tonut           = direct.todirect
+
+local is_node         = direct.is_node
+local is_nut          = direct.is_direct
+
+local d_remove_node   = direct.remove
+local d_flush_node    = direct.flush_node
+local d_getnext       = direct.getnext
+local d_getprev       = direct.getprev
+local d_getid         = direct.getid
+local d_getlist       = direct.getlist
+local d_find_tail     = direct.tail
+local d_insert_after  = direct.insert_after
+local d_insert_before = direct.insert_before
+local d_slide         = direct.slide
+local d_traverse      = direct.traverse
+local d_setlink       = direct.setlink
+local d_getboth       = direct.getboth
+
+local nuts = {
+    check_discretionaries   = direct.check_discretionaries,
+    copy                    = direct.copy,
+    copy_list               = direct.copy_list,
+    copy_node               = direct.copy,
+    copy_only               = direct.copy_only or direct.copy,
+    count                   = direct.count,
+    current_attr            = direct.current_attr,
+    delete                  = direct.delete,
+    dimensions              = direct.dimensions,
+    effective_glue          = direct.effective_glue,
+    end_of_math             = direct.end_of_math,
+    exchange                = direct.exchange,
+    find_attribute          = direct.find_attribute,
+    first_glyph             = direct.first_glyph,
+    flatten_discretionaries = direct.flatten_discretionaries,
+    flush                   = d_flush_node,
+    flush_components        = direct.flush_components,
+    flush_list              = direct.flush_list,
+    flush_node              = direct.flush_node,
+    free                    = direct.free,
+    get_synctex_fields      = direct.get_synctex_fields,
+    getattr                 = direct.get_attribute,
+    getattributelist        = direct.getattributelist,
+    getattrlist             = direct.getattributelist,
+    getboth                 = d_getboth,
+    getbox                  = direct.getbox,
+    getboxglue              = direct.getglue,
+    getchar                 = direct.getchar,
+    getcomponents           = direct.getcomponents,
+    getdata                 = direct.getdata,
+    getdepth                = direct.getdepth,
+    getdir                  = direct.getdir,
+    getdirection            = direct.getdirection,
+    getdisc                 = direct.getdisc,
+    getdiscretionary        = direct.getdisc,
+    getexpansion            = direct.getexpansion,
+    getfam                  = direct.getfam,
+    getfield                = direct.getfield,
+    getfont                 = direct.getfont,
+    getglue                 = direct.getglue,
+    getglyphdata            = direct.getglyphdata,
+    getheight               = direct.getheight,
+    getid                   = d_getid,
+    getkern                 = direct.getkern,
+    getlang                 = direct.getlang,
+    getlanguage             = direct.getlang,
+    getleader               = direct.getleader,
+    getlist                 = d_getlist,
+    getnext                 = d_getnext,
+    getnormalizedline       = direct.getnormalizedline,
+    getnucleus              = direct.getnucleus,
+    getoffsets              = direct.getoffsets,
+    getorientation          = direct.getorientation,
+    getpenalty              = direct.getpenalty,
+    getpost                 = direct.getpost,
+    getpre                  = direct.getpre,
+    getprev                 = d_getprev,
+    getreplace              = direct.getreplace,
+    getruledata             = direct.getglyphdata,
+    getscript               = direct.setscript,
+    getshift                = direct.getshift,
+    getstate                = direct.getstate,
+    getsub                  = direct.getsub,
+    getsubpre               = direct.getsubpre,
+    getsubtype              = direct.getsubtype,
+    getsup                  = direct.getsup,
+    getsuppre               = direct.getsuppre,
+    getsurround             = direct.getkern,
+    gettotal                = direct.gettotal,
+    getvalue                = direct.getdata, -- obsolete
+    getwhd                  = direct.getwhd,
+    getwidth                = direct.getwidth,
+    has_attribute           = direct.has_attribute,
+    has_dimensions          = direct.has_dimensions,
+    has_field               = direct.has_field,
+    has_glyph               = direct.has_glyph or direct.first_glyph,
+    hpack                   = direct.hpack,
+    hyphenating             = direct.hyphenating,
+    insert_after            = d_insert_after,
+    insert_before           = d_insert_before,
+    is_direct               = is_direct,
+    is_node                 = is_node,
+    is_nut                  = direct.is_direct,
+    is_zero_glue            = direct.is_zero_glue,
+    ischar                  = direct.is_char,
+    isglyph                 = direct.is_glyph,
+    kerning                 = direct.kerning,
+    last_node               = direct.last_node,
+    length                  = direct.length,
+    ligaturing              = direct.ligaturing,
+    migrate                 = direct.migrate,
+    mlist_to_hlist          = direct.mlist_to_hlist,
+    new                     = direct.new,
+    protect_glyph           = direct.protect_glyph,
+    protect_glyphs          = direct.protect_glyphs,
+    protrusion_skippable    = direct.protrusion_skippable,
+    rangedimensions         = direct.rangedimensions,
+    remove                  = d_remove_node,
+    reverse                 = direct.reverse,
+    set_attribute           = direct.set_attribute,
+    set_synctex_fields      = direct.set_synctex_fields,
+    setattr                 = direct.set_attribute,
+    setattributelist        = direct.setattributelist,
+    setattrlist             = direct.setattributelist,
+    setboth                 = direct.setboth,
+    setbox                  = direct.setbox,
+    setboxglue              = direct.setglue,
+    setchar                 = direct.setchar,
+    setcomponents           = direct.setcomponents,
+    setdata                 = direct.setdata,
+    setdepth                = direct.setdepth,
+    setdir                  = direct.setdir,
+    setdirection            = direct.setdirection,
+    setdisc                 = direct.setdisc,
+    setdiscretionary        = direct.setdisc,
+    setexpansion            = direct.setexpansion,
+    setfam                  = direct.setfam,
+    setfield                = direct.setfield,
+    setfont                 = direct.setfont,
+    setglue                 = direct.setglue,
+    setglyphdata            = direct.setglyphdata,
+    setheight               = direct.setheight,
+    setkern                 = direct.setkern,
+    setlang                 = direct.setlang,
+    setlanguage             = direct.setlang,
+    setleader               = direct.setleader,
+    setlink                 = d_setlink,
+    setlist                 = direct.setlist,
+    setnext                 = direct.setnext,
+    setnucleus              = direct.setnucleus,
+    setoffsets              = direct.setoffsets,
+    setorientation          = direct.setorientation,
+    setpenalty              = direct.setpenalty,
+    setpost                 = direct.setpost,
+    setpre                  = direct.setpre,
+    setprev                 = direct.setprev,
+    setreplace              = direct.setreplace,
+    setruledata             = direct.setglyphdata,
+    setscript               = direct.getscript,
+    setshift                = direct.setshift,
+    setsplit                = direct.setsplit,
+    setstate                = direct.setstate,
+    setsub                  = direct.setsub,
+    setsubpre               = direct.setsubpre,
+    setsubtype              = direct.setsubtype,
+    setsup                  = direct.setsup,
+    setsuppre               = direct.setsuppre,
+    setsurround             = direct.setkern,
+    setvalue                = direct.setdata, -- obsolete
+    setwhd                  = direct.setwhd,
+    setwidth                = direct.setwidth,
+    slide                   = d_slide,
+    start_of_par            = direct.start_of_par,
+    tail                    = d_find_tail,
+    takeattr                = direct.unset_attribute, -- ?
+    tonode                  = tonode,
+    tonut                   = tonut,
+    tostring                = direct.tostring,
+    traverse                = d_traverse,
+    traverse_char           = direct.traverse_char,
+    traverse_glyph          = direct.traverse_glyph,
+    traverse_id             = direct.traverse_id,
+    traverse_list           = direct.traverse_list,
+    unprotect_glyph         = direct.unprotect_glyph,
+    unprotect_glyphs        = direct.unprotect_glyphs,
+    unset_attribute         = direct.unset_attribute,
+    usedlist                = direct.usedlist,
+    uses_font               = direct.uses_font,
+    vpack                   = direct.vpack,
+    writable_spec           = direct.writable_spec,
+    write                   = direct.write,
+}
+
+
+nodes.nuts      = nuts
+
+nodes.is_node   = is_node
+nodes.is_direct = is_nut
+nodes.is_nut    = is_nut
+
+nodes.tonode    = tonode
+nodes.tonut     = tonut
+
+function nuts.delete(head,current)
+    return d_remove_node(head,current,true)
+end
+
+function nuts.replace(head,current,new) -- no head returned if false
+    if not new then
+        head, current, new = false, head, current
+    end
+    local prev, next = d_getboth(current)
+    if prev or next then
+        d_setlink(prev,new,next)
+    end
+    if head then
+        if head == current then
+            head = new
+        end
+        d_flush_node(current)
+        return head, new
+    else
+        d_flush_node(current)
+        return new
+    end
+end
+
+local function countall(stack,flat)
+    local n = 0
+    while stack do
+        local id = d_getid(stack)
+        if not flat and id == hlist_code or id == vlist_code then
+            local list = d_getlist(stack)
+            if list then
+                n = n + 1 + countall(list) -- self counts too
+            else
+                n = n + 1
+            end
+        else
+            n = n + 1
+        end
+        stack = d_getnext(stack)
+    end
+    return n
+end
+
+nuts.countall = countall
+
+function nodes.countall(stack,flat)
+    return countall(tonut(stack),flat)
+end
+
+function nuts.append(head,current,...)
+    for i=1,select("#",...) do
+        head, current = d_insert_after(head,current,(select(i,...)))
+    end
+    return head, current
+end
+
+function nuts.prepend(head,current,...)
+    for i=1,select("#",...) do
+        head, current = d_insert_before(head,current,(select(i,...)))
+    end
+    return head, current
+end
+
+function nuts.linked(...) -- slides !
+    local head, last
+    for i=1,select("#",...) do
+        local next = select(i,...)
+        if next then
+            if head then
+                d_setlink(last,next)
+            else
+                head = next
+            end
+            last = d_find_tail(next) -- we could skip the last one
+        end
+    end
+    return head
+end
+
+function nuts.concat(list) -- consider tail instead of slide
+    local head, tail
+    for i=1,#list do
+        local li = list[i]
+        if li then
+            if head then
+                d_setlink(tail,li)
+            else
+                head = li
+            end
+            tail = d_slide(li)
+        end
+    end
+    return head, tail
+end
+
+function nuts.reference(n)
+    return n or "<none>"
+end
+
+function nuts.vianuts (f) return function(n,...) return tonode(f(tonut (n),...)) end end
+function nuts.vianodes(f) return function(n,...) return tonut (f(tonode(n),...)) end end
+
+nodes.vianuts  = nuts.vianuts
+nodes.vianodes = nuts.vianodes
+
+function nodes.insert_list_after(h,c,n)
+    local t = n_tail(n)
+    if c then
+        local cn = n_getnext(c)
+        if cn then
+            -- no setboth here yet
+            n_setfield(t,"next",cn)
+            n_setfield(cn,"prev",t)
+        else
+            n_setfield(t,"next",nil)
+        end
+        n_setfield(c,"next",n)
+        n_setfield(n,"prev",c)
+        return h, n
+    end
+    return n, t
+end
+
+function nuts.insert_list_after(h,c,n)
+    local t = d_tail(n)
+    if c then
+        local cn = d_getnext(c)
+        if cn then
+            d_setlink(t,cn)
+        else
+            d_setnext(t)
+        end
+        d_setlink(c,n)
+        return h, n
+    end
+    return n, t
+end
+
+-- test code only
+
+-- collectranges and mix
+
+local report = logs.reporter("sliding")
+
+local function message(detail,head,current,previous)
+    report("error: %s, current: %s:%s, previous: %s:%s, list: %s, text: %s",
+        detail,
+        nodecodes[d_getid(current)],
+        current,
+        nodecodes[d_getid(previous)],
+        previous,
+        nodes.idstostring(head),
+        nodes.listtoutf(head)
+    )
+    utilities.debugger.showtraceback(report)
+end
+
+local function warn()
+    report()
+    report("warning: the slide tracer is enabled")
+    report()
+    warn = false
+end
+
+local function tracedslide(head)
+    if head then
+        if warn then
+            warn()
+        end
+        local next = d_getnext(head)
+        if next then
+            local prev = head
+            for n in d_traverse(next) do
+                local p = d_getprev(n)
+                if not p then
+                    message("unset",head,n,prev)
+                 -- break
+                elseif p ~= prev then
+                    message("wrong",head,n,prev)
+                 -- break
+                end
+                prev = n
+            end
+        end
+        return d_slide(head)
+    end
+end
+
+local function nestedtracedslide(head,level) -- no sliding !
+    if head then
+        if warn then
+            warn()
+        end
+        local id = d_getid(head)
+        local next = d_getnext(head)
+        if next then
+            report("%whead:%s",level or 0,nodecodes[id])
+            local prev = head
+            for n in d_traverse(next) do
+                local p = d_getprev(n)
+                if not p then
+                    message("unset",head,n,prev)
+                 -- break
+                elseif p ~= prev then
+                    message("wrong",head,n,prev)
+                 -- break
+                end
+                prev = n
+                local id = d_getid(n)
+                if id == hlist_code or id == vlist_code then
+                    nestedtracedslide(d_getlist(n),(level or 0) + 1)
+                end
+            end
+        elseif id == hlist_code or id == vlist_code then
+            report("%wlist:%s",level or 0,nodecodes[id])
+            nestedtracedslide(d_getlist(head),(level or 0) + 1)
+        end
+     -- return d_slide(head)
+    end
+end
+
+local function untracedslide(head)
+    if head then
+        if warn then
+            warn()
+        end
+        local next = d_getnext(head)
+        if next then
+            local prev = head
+            for n in d_traverse(next) do
+                local p = d_getprev(n)
+                if not p then
+                    return "unset", d_getid(n)
+                elseif p ~= prev then
+                    return "wrong", d_getid(n)
+                end
+                prev = n
+            end
+        end
+        return d_slide(head)
+    end
+end
+
+nuts.tracedslide       = tracedslide
+nuts.untracedslide     = untracedslide
+nuts.nestedtracedslide = nestedtracedslide
+
+-- this might move
+
+local propertydata = direct.get_properties_table(true)
+
+local getattr = nuts.getattr
+local setattr = nuts.setattr
+
+nodes.properties = {
+    data = propertydata,
+}
+
+-- experimental code with respect to copying attributes has been removed
+-- as it doesn't pay of (most attributes are only accessed once anyway)
+
+function nuts.getprop(n,k)
+    local p = propertydata[n]
+    if p then
+        if k then
+            return p[k]
+        else
+            return p
+        end
+    end
+end
+
+function nuts.rawprop(n,k)
+    local p = rawget(propertydata,n)
+    if p then
+        if k then
+            return p[k]
+        else
+            return p
+        end
+    end
+end
+
+function nuts.setprop(n,k,v)
+    local p = propertydata[n]
+    if p then
+        p[k] = v
+    else
+        propertydata[n] = { [k] = v }
+    end
+end
+
+function nuts.theprop(n)
+    local p = propertydata[n]
+    if not p then
+        p = { }
+        propertydata[n] = p
+    end
+    return p
+end
+
+
+function nuts.isdone(n,k)
+    local p = propertydata[n]
+    if not p then
+        propertydata[n] = { [k] = true }
+        return false
+    end
+    local v = p[k]
+    if v == nil then
+        propertydata[n] = { [k] = true }
+        return false
+    end
+    return v
+end
+
+function nuts.copy_properties(source,target,what)
+    local newprops = propertydata[source]
+    if not newprops then
+        -- nothing to copy
+        return
+    end
+    if what then
+        -- copy one category
+        newprops = rawget(source,what)
+        if newprops then
+            newprops = fastcopy(newprops)
+            local p = rawget(propertydata,target)
+            if p then
+                p[what] = newprops
+            else
+                propertydata[target] = {
+                    [what] = newprops,
+                }
+            end
+        end
+    else
+        -- copy all properties
+        newprops = fastcopy(newprops)
+        propertydata[target] = newprops
+    end
+    return newprops -- for checking
+end
diff --git a/tex/context/base/mkiv/node-nut.lua b/tex/context/base/mkiv/node-nut.lua
index 80335e933..68d238b1a 100644
--- a/tex/context/base/mkiv/node-nut.lua
+++ b/tex/context/base/mkiv/node-nut.lua
@@ -1,4 +1,4 @@
-if not modules then modules = { } end modules ['node-met'] = {
+if not modules then modules = { } end modules ['node-nut'] = {
     version   = 1.001,
     comment   = "companion to node-ini.mkiv",
     author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
@@ -396,7 +396,7 @@ local d_setlink       = direct.setlink
 local d_setboth       = direct.setboth
 local d_getboth       = direct.getboth
 
-local remove = CONTEXTLMTXMODE > 0 and d_remove_node or function(head,current,free_too)
+local remove = function(head,current,free_too)
     if current then
         local h, c = d_remove_node(head,current)
         if free_too then
@@ -812,8 +812,6 @@ nuts.tracedslide       = tracedslide
 nuts.untracedslide     = untracedslide
 nuts.nestedtracedslide = nestedtracedslide
 
--- nuts.slide          = tracedslide
-
 -- this might move
 
 local propertydata = direct.get_properties_table(true)
@@ -877,17 +875,7 @@ local getstate = direct.getstate
 local setstate = direct.setstate
 
 if not setstate or not getstate then
- -- setstate = function(n,v)
- --     setprop(n,"state",v)
- -- end
- -- getstate = function(n,v)
- --     local s = getprop(n,"state")
- --     if v then
- --         return s == v
- --     else
- --         return s
- --     end
- -- end
+
     setstate = function(n,v)
         local p = propertydata[n]
         if p then
@@ -896,6 +884,7 @@ if not setstate or not getstate then
             propertydata[n] = { state = v }
         end
     end
+
     getstate = function(n,v)
         local p = propertydata[n]
         if p then
@@ -919,7 +908,7 @@ local setscript = direct.setscript or function(n,v) end -- elsewhere
 nuts.setscript = getscript
 nuts.getscript = setscript
 
-nuts.isdone = function(n,k)
+function nuts.isdone(n,k)
     local p = propertydata[n]
     if not p then
         propertydata[n] = { [k] = true }
@@ -933,9 +922,6 @@ nuts.isdone = function(n,k)
     return v
 end
 
--- nodes.setprop = nodes.setproperty
--- nodes.getprop = nodes.getproperty
-
 function nuts.copy_properties(source,target,what)
     local newprops = propertydata[source]
     if not newprops then
diff --git a/tex/context/base/mkiv/node-res.lua b/tex/context/base/mkiv/node-res.lua
index 9b76fed54..c27059003 100644
--- a/tex/context/base/mkiv/node-res.lua
+++ b/tex/context/base/mkiv/node-res.lua
@@ -584,12 +584,17 @@ local usage = CONTEXTLMTXMODE > 0 and node.inuse or function()
     return t
 end
 
+local stock = CONTEXTLMTXMODE > 0 and node.instock or { }
+
 nutpool .cleanup = cleanup
 nodepool.cleanup = cleanup
 
 nutpool .usage   = usage
 nodepool.usage   = usage
 
+nutpool .stock   = stock
+nodepool.stock   = stock
+
 -- end
 
 statistics.register("cleaned up reserved nodes", function()
diff --git a/tex/context/base/mkiv/node-snp.lmt b/tex/context/base/mkiv/node-snp.lmt
index d058a142a..8c0237a5c 100644
--- a/tex/context/base/mkiv/node-snp.lmt
+++ b/tex/context/base/mkiv/node-snp.lmt
@@ -16,6 +16,7 @@ nodes.snapshots = snapshots
 local status    = status
 
 local nodeusage = nodes.pool and nodes.pool.usage
+local nodestock = nodes.pool and nodes.pool.stock
 local clock     = os.gettimeofday or os.clock -- should go in environment
 local lasttime  = clock()
 local samples   = { }
@@ -25,6 +26,7 @@ function snapshots.takesample(comment)
         local c = clock()
         samples[#samples+1] = {
             nodes            = nodeusage(),
+            stock            = nodestock(),
             texcallbacks     = status.getcallbackstate(),
             mpcallbacks      = mplib.getcallbackstate(),
             backendcallbacks = backends.getcallbackstate(),
@@ -51,6 +53,8 @@ function snapshots.takesample(comment)
                 read      = status.getreadstate(),
                 font      = status.getfontstate(),
                 language  = status.getlanguagestate(),
+                mark      = status.getmarkstate(),
+                sparse    = status.getsparsestate(),
             },
         }
     end
diff --git a/tex/context/base/mkiv/status-files.pdf b/tex/context/base/mkiv/status-files.pdf
index 41c6c2f60..56e1600c9 100644
--- a/tex/context/base/mkiv/status-files.pdf
+++ b/tex/context/base/mkiv/status-files.pdf
diff --git a/tex/context/base/mkiv/status-lua.pdf b/tex/context/base/mkiv/status-lua.pdf
index 5d19ce520..1b46f8863 100644
--- a/tex/context/base/mkiv/status-lua.pdf
+++ b/tex/context/base/mkiv/status-lua.pdf
diff --git a/tex/context/base/mkiv/trac-inf.lmt b/tex/context/base/mkiv/trac-inf.lmt
index 1729c87e5..80bb3b2f6 100644
--- a/tex/context/base/mkiv/trac-inf.lmt
+++ b/tex/context/base/mkiv/trac-inf.lmt
@@ -289,20 +289,20 @@ function statistics.showusage(when)
     local list   = {
         "stringstate", "poolstate",
         "hashstate", "lookupstate",
-        "nodestate", "tokenstate",
+        "nodestate", "extrastate", "tokenstate",
         "bufferstate", "inputstate", "filestate",
         "neststate", "parameterstate", "savestate",
-        "fontstate", "languagestate",
+        "fontstate", "languagestate", "markstate", "sparsestate",
     }
     local fields = { "max", "min", "set", "stp", false, "mem", "all", false, "ini", "ptr", "top" }
-    local line   = rep("-",172)
+    local line   = rep("-",190)
     do
         local t = { }
         for i=1,#list do
             t[i] = gsub(list[i],"state","")
         end
         report("%w%s",2,line)
-        report("%w%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s",5,unpack(t))
+        report("%w%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s",5,unpack(t))
         report("%w%s",2,line)
     end
     for i=1,#fields do
@@ -311,9 +311,9 @@ function statistics.showusage(when)
             local t = { }
             for i=1,#list do
                 local n = s[list[i]][f]
-                t[i] = n < 0 and formatters["%w"](12) or formatters["%12i"](n)
+                t[i] = n < 0 and formatters["%w"](11) or formatters["%11i"](n)
             end
-            report("  %3s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s",f,unpack(t))
+            report("  %3s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s%11s",f,unpack(t))
         else
             report("")
         end
@@ -363,8 +363,18 @@ local enabled    = false
 trackers.register("system.usage", function(v)
     if v and not registered then
         logs.private.enablepagetiming()
-        luatex.registerpageactions(function() if enabled then statistics.showusage("page")   end end)
-        luatex.registerstopactions(function() if enabled then statistics.showusage("finish") end end)
+        if v ~= "summary" then
+            luatex.registerpageactions(function()
+                if enabled then
+                    statistics.showusage("page")
+                end
+            end)
+        end
+        luatex.registerstopactions(function()
+            if enabled then
+                statistics.showusage("finish")
+            end
+        end)
         registered = true
     end
     enabled = v
diff --git a/tex/context/base/mkiv/trac-tim.lmt b/tex/context/base/mkiv/trac-tim.lmt
index ce61c7440..fcba7f132 100644
--- a/tex/context/base/mkiv/trac-tim.lmt
+++ b/tex/context/base/mkiv/trac-tim.lmt
@@ -123,6 +123,7 @@ local function convert(name)
                 end
 
                 collect("nodes")
+                collect("stock")
                 collect("memories")
                 collect("variables")
                 collect("texvariables")
diff --git a/tex/generic/context/luatex/luatex-fonts-merged.lua b/tex/generic/context/luatex/luatex-fonts-merged.lua
index aaea6ff2f..ff1b629b8 100644
--- a/tex/generic/context/luatex/luatex-fonts-merged.lua
+++ b/tex/generic/context/luatex/luatex-fonts-merged.lua
@@ -1,6 +1,6 @@
 -- merged file : c:/data/develop/context/sources/luatex-fonts-merged.lua
 -- parent file : c:/data/develop/context/sources/luatex-fonts.lua
--- merge date  : 2020-08-25 19:56
+-- merge date  : 2020-08-27 19:25
 
 do -- begin closure to overcome local limits and interference
 
@@ -9131,12 +9131,14 @@ function constructors.scale(tfmdata,specification)
  target.cidinfo=properties.cidinfo
  target.format=properties.format
  target.cache=constructors.cacheintex and "yes" or "renew"
+ local original=properties.original or tfmdata.original
  local fontname=properties.fontname or tfmdata.fontname
  local fullname=properties.fullname or tfmdata.fullname
  local filename=properties.filename or tfmdata.filename
  local psname=properties.psname   or tfmdata.psname
  local name=properties.name  or tfmdata.name
  local psname,psfixed=fixedpsname(psname,fontname or fullname or file.nameonly(filename))
+ target.original=original
  target.fontname=fontname
  target.fullname=fullname
  target.filename=filename
@@ -13275,15 +13277,15 @@ do
  local p_dictionary=(
   p_byte+p_positive+p_negative+p_short+p_long+p_nibbles+p_single+p_double+p_unsupported
  )^1
- parsedictionaries=function(data,dictionaries,what)
+ parsedictionaries=function(data,dictionaries,version)
   stack={}
   strings=data.strings
   if trace_charstrings then
-   report("charstring format %a",what)
+   report("charstring format %a",version)
   end
   for i=1,#dictionaries do
    top=0
-   result=what=="cff" and {
+   result=version=="cff" and {
     monospaced=false,
     italicangle=0,
     underlineposition=-100,
@@ -14658,8 +14660,8 @@ do
   processshape(tab,index-1)
  end
 end
-local function readglobals(f,data)
- local routines=readlengths(f)
+local function readglobals(f,data,version)
+ local routines=readlengths(f,version=="cff2")
  for i=1,#routines do
   routines[i]=readbytetable(f,routines[i])
  end
@@ -14713,14 +14715,14 @@ local function readprivates(f,data)
   private.data=readstring(f,private.size)
  end
 end
-local function readlocals(f,data,dictionary)
+local function readlocals(f,data,dictionary,version)
  local header=data.header
  local private=dictionary.private
  if private then
   local subroutineoffset=private.data.subroutines
   if subroutineoffset~=0 then
    setposition(f,header.offset+private.offset+subroutineoffset)
-   local subroutines=readlengths(f)
+   local subroutines=readlengths(f,version=="cff2")
    for i=1,#subroutines do
     subroutines[i]=readbytetable(f,subroutines[i])
    end
@@ -14733,7 +14735,7 @@ local function readlocals(f,data,dictionary)
   dictionary.subroutines={}
  end
 end
-local function readcharstrings(f,data,what)
+local function readcharstrings(f,data,version)
  local header=data.header
  local dictionaries=data.dictionaries
  local dictionary=dictionaries[1]
@@ -14742,7 +14744,7 @@ local function readcharstrings(f,data,what)
  if type(offset)~="number" then
  elseif stringtype==2 then
   setposition(f,header.offset+offset)
-  local charstrings=readlengths(f,what=="cff2")
+  local charstrings=readlengths(f,version=="cff2")
   local nofglyphs=#charstrings
   for i=1,nofglyphs do
    charstrings[i]=readstring(f,charstrings[i])
@@ -14772,7 +14774,8 @@ readers.parsecharstrings=parsecharstrings
 local function readnoselect(f,fontdata,data,glyphs,doshapes,version,streams)
  local dictionaries=data.dictionaries
  local dictionary=dictionaries[1]
- readglobals(f,data)
+ local cid=not dictionary.private and dictionary.cid
+ readglobals(f,data,version)
  readcharstrings(f,data,version)
  if version=="cff2" then
   dictionary.charset=nil
@@ -14780,9 +14783,27 @@ local function readnoselect(f,fontdata,data,glyphs,doshapes,version,streams)
   readencodings(f,data)
   readcharsets(f,data,dictionary)
  end
+ if cid then
+  local fdarray=cid.fdarray
+  if fdarray then
+   setposition(f,data.header.offset+fdarray)
+   local dictionaries=readlengths(f,version=="cff2")
+   local nofdictionaries=#dictionaries
+   if nofdictionaries>0 then
+    for i=1,nofdictionaries do
+     dictionaries[i]=readstring(f,dictionaries[i])
+    end
+    parsedictionaries(data,dictionaries)
+    dictionary.private=dictionaries[1].private
+    if nofdictionaries>1 then
+     report("ignoring dictionaries > 1 in cid font")
+    end
+   end
+  end
+ end
  readprivates(f,data)
  parseprivates(data,data.dictionaries)
- readlocals(f,data,dictionary)
+ readlocals(f,data,dictionary,version)
  startparsing(fontdata,data,streams)
  parsecharstrings(fontdata,data,glyphs,doshapes,version,streams)
  stopparsing(fontdata,data)
@@ -14793,7 +14814,7 @@ local function readfdselect(f,fontdata,data,glyphs,doshapes,version,streams)
  local dictionary=dictionaries[1]
  local cid=dictionary.cid
  local cidselect=cid and cid.fdselect
- readglobals(f,data)
+ readglobals(f,data,version)
  readcharstrings(f,data,version)
  if version~="cff2" then
   readencodings(f,data)
@@ -14837,7 +14858,7 @@ local function readfdselect(f,fontdata,data,glyphs,doshapes,version,streams)
   local cidarray=cid.fdarray
   if cidarray then
    setposition(f,header.offset+cidarray)
-   local dictionaries=readlengths(f)
+   local dictionaries=readlengths(f,version=="cff2")
    for i=1,#dictionaries do
     dictionaries[i]=readstring(f,dictionaries[i])
    end
@@ -14845,7 +14866,7 @@ local function readfdselect(f,fontdata,data,glyphs,doshapes,version,streams)
    cid.dictionaries=dictionaries
    readcidprivates(f,data)
    for i=1,#dictionaries do
-    readlocals(f,data,dictionaries[i])
+    readlocals(f,data,dictionaries[i],version)
    end
    startparsing(fontdata,data,streams)
    for i=1,#charstrings do
@@ -35924,8 +35945,9 @@ function definers.read(specification,size,id)
    report_defining("already hashed: %s",hash)
   end
  else
-  tfmdata=definers.loadfont(specification) 
+  tfmdata=definers.loadfont(specification)
   if tfmdata then
+   tfmdata.original=specification.specification
    if trace_defining then
     report_defining("loaded and hashed: %s",hash)
    end