beta 2014.02.14 17:07

16 files changed, 278 insertions, 139 deletions

diff --git a/tex/context/base/cont-new.mkiv b/tex/context/base/cont-new.mkiv
index 6058b3e1b..733afc6d0 100644
--- a/tex/context/base/cont-new.mkiv
+++ b/tex/context/base/cont-new.mkiv
@@ -11,7 +11,7 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
-\newcontextversion{2014.02.13 11:27}
+\newcontextversion{2014.02.14 17:07}
 
 %D This file is loaded at runtime, thereby providing an excellent place for
 %D hacks, patches, extensions and new features.
diff --git a/tex/context/base/context-version.pdf b/tex/context/base/context-version.pdf
index cdb6bdceb..275625528 100644
--- a/tex/context/base/context-version.pdf
+++ b/tex/context/base/context-version.pdf
diff --git a/tex/context/base/context.mkiv b/tex/context/base/context.mkiv
index c5708f2dd..8c67fbd50 100644
--- a/tex/context/base/context.mkiv
+++ b/tex/context/base/context.mkiv
@@ -28,7 +28,7 @@
 %D up and the dependencies are more consistent.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2014.02.13 11:27}
+\edef\contextversion{2014.02.14 17:07}
 \edef\contextkind   {beta}
 
 %D For those who want to use this:
diff --git a/tex/context/base/l-lua.lua b/tex/context/base/l-lua.lua
index 233e1aa0f..4a96b0b1d 100644
--- a/tex/context/base/l-lua.lua
+++ b/tex/context/base/l-lua.lua
@@ -151,4 +151,6 @@ end
 
 -- nice for non ascii scripts (this might move):
 
-lua.mask = load([[τεχ = 1]]) and "utf" or "ascii"
+if lua then
+    lua.mask = load([[τεχ = 1]]) and "utf" or "ascii"
+end
diff --git a/tex/context/base/lpdf-mis.lua b/tex/context/base/lpdf-mis.lua
index 174d17427..43f6cb7e1 100644
--- a/tex/context/base/lpdf-mis.lua
+++ b/tex/context/base/lpdf-mis.lua
@@ -43,6 +43,7 @@ local pdfflushobject       = lpdf.flushobject
 local pdfflushstreamobject = lpdf.flushstreamobject
 
 local variables            = interfaces.variables
+local v_stop               = variables.stop
 
 local positive             = register(pdfliteral("/GSpositive gs"))
 local negative             = register(pdfliteral("/GSnegative gs"))
@@ -337,31 +338,82 @@ local map = {
     characters    = "a",
 }
 
+-- local function featurecreep()
+--     local pages, lastconversion, list = structures.pages.tobesaved, nil, pdfarray()
+--     local getstructureset = structures.sets.get
+--     for i=1,#pages do
+--         local p = pages[i]
+--         if not p then
+--             return -- fatal error
+--         else
+--             local numberdata = p.numberdata
+--             if numberdata then
+--                 local conversionset = numberdata.conversionset
+--                 if conversionset then
+--                     local conversion = getstructureset("structure:conversions",p.block,conversionset,1,"numbers")
+--                     if conversion ~= lastconversion then
+--                         lastconversion = conversion
+--                         list[#list+1] = i - 1 -- pdf starts numbering at 0
+--                         list[#list+1] = pdfdictionary { S = pdfconstant(map[conversion] or map.numbers) }
+--                     end
+--                 end
+--             end
+--             if not lastconversion then
+--                 lastconversion = "numbers"
+--                 list[#list+1] = i - 1 -- pdf starts numbering at 0
+--                 list[#list+1] = pdfdictionary { S = pdfconstant(map.numbers) }
+--             end
+--         end
+--     end
+--     lpdf.addtocatalog("PageLabels", pdfdictionary { Nums = list })
+-- end
+
 local function featurecreep()
-    local pages, lastconversion, list = structures.pages.tobesaved, nil, pdfarray()
-    local getstructureset = structures.sets.get
+    local pages        = structures.pages.tobesaved
+    local list         = pdfarray()
+    local getset       = structures.sets.get
+    local stopped      = false
+    local oldlabel     = nil
+    local olconversion = nil
     for i=1,#pages do
         local p = pages[i]
         if not p then
             return -- fatal error
+        end
+        local label = p.viewerprefix or ""
+        if p.status == v_stop then
+            if not stopped then
+                list[#list+1] = i - 1 -- pdf starts numbering at 0
+                list[#list+1] = pdfdictionary {
+                    P = pdfunicode(label),
+                }
+                stopped = true
+            end
+            oldlabel      = nil
+            oldconversion = nil
+            stopped       = false
         else
             local numberdata = p.numberdata
+            local conversion = nil
+            local number     = p.number
             if numberdata then
                 local conversionset = numberdata.conversionset
                 if conversionset then
-                    local conversion = getstructureset("structure:conversions",p.block,conversionset,1,"numbers")
-                    if conversion ~= lastconversion then
-                        lastconversion = conversion
-                        list[#list+1] = i - 1 -- pdf starts numbering at 0
-                        list[#list+1] = pdfdictionary { S = pdfconstant(map[conversion] or map.numbers) }
-                    end
+                    conversion = getset("structure:conversions",p.block,conversionset,1,"numbers")
                 end
             end
-            if not lastconversion then
-                lastconversion = "numbers"
+            conversion = conversion and map[conversion] or map.numbers
+            if number == 1 or oldlabel ~= label or oldconversion ~= conversion then
                 list[#list+1] = i - 1 -- pdf starts numbering at 0
-                list[#list+1] = pdfdictionary { S = pdfconstant(map.numbers) }
+                list[#list+1] = pdfdictionary {
+                    S  = pdfconstant(conversion),
+                    St = number,
+                    P  = label ~= "" and pdfunicode(label) or nil,
+                }
             end
+            oldlabel      = label
+            oldconversion = conversion
+            stopped       = false
         end
     end
     lpdf.addtocatalog("PageLabels", pdfdictionary { Nums = list })
diff --git a/tex/context/base/math-ini.lua b/tex/context/base/math-ini.lua
index 4da1cded2..1351559a0 100644
--- a/tex/context/base/math-ini.lua
+++ b/tex/context/base/math-ini.lua
@@ -350,10 +350,12 @@ local utf8byte  = lpeg.patterns.utf8byte * lpeg.P(-1)
 local somechar = { }
 
 table.setmetatableindex(somechar,function(t,k)
-    local b = lpegmatch(utf8byte,k)
-    local v = b and chardata[b] or false
-    t[k] = v
-    return v
+    if k then
+        local b = lpegmatch(utf8byte,k)
+        local v = b and chardata[b] or false
+        t[k] = v
+        return v
+    end
 end)
 
 local function utfmathclass(chr, default)
diff --git a/tex/context/base/mult-def.mkiv b/tex/context/base/mult-def.mkiv
index 80fd14775..9206743f4 100644
--- a/tex/context/base/mult-def.mkiv
+++ b/tex/context/base/mult-def.mkiv
@@ -36,6 +36,7 @@
 
 \def\c!fences           {fences}
 \def\c!keeptogether     {keeptogether}
+\def\c!viewerprefix     {viewerprefix}
 
 \def\c!dataset          {dataset}
 \def\c!sectionblock     {sectionblock}
diff --git a/tex/context/base/status-files.pdf b/tex/context/base/status-files.pdf
index 299d73213..ae09bb5ae 100644
--- a/tex/context/base/status-files.pdf
+++ b/tex/context/base/status-files.pdf
diff --git a/tex/context/base/status-lua.pdf b/tex/context/base/status-lua.pdf
index e8ef5d9f1..8f1f3e5c8 100644
--- a/tex/context/base/status-lua.pdf
+++ b/tex/context/base/status-lua.pdf
diff --git a/tex/context/base/strc-pag.lua b/tex/context/base/strc-pag.lua
index 7b43a3a58..fd0a367aa 100644
--- a/tex/context/base/strc-pag.lua
+++ b/tex/context/base/strc-pag.lua
@@ -52,7 +52,7 @@ job.register('structures.pages.collected', tobesaved, initializer)
 
 local specification = { } -- to be checked
 
-function pages.save(prefixdata,numberdata)
+function pages.save(prefixdata,numberdata,extradata)
     local realpage = texgetcount("realpageno")
     local userpage = texgetcount("userpageno")
     if realpage > 0 then
@@ -60,10 +60,12 @@ function pages.save(prefixdata,numberdata)
             report_pages("saving page %s.%s",realpage,userpage)
         end
         local data = {
-            number     = userpage,
-            block      = sections.currentblock(),
-            prefixdata = prefixdata and helpers.simplify(prefixdata),
-            numberdata = numberdata and helpers.simplify(numberdata),
+            number       = userpage,
+            viewerprefix = extradata.viewerprefix,
+            state        = extradata.state,
+            block        = sections.currentblock(),
+            prefixdata   = prefixdata and helpers.simplify(prefixdata),
+            numberdata   = numberdata and helpers.simplify(numberdata),
         }
         tobesaved[realpage] = data
         if not collected[realpage] then
diff --git a/tex/context/base/strc-pag.mkiv b/tex/context/base/strc-pag.mkiv
index 85cfeb40f..c4e9819ba 100644
--- a/tex/context/base/strc-pag.mkiv
+++ b/tex/context/base/strc-pag.mkiv
@@ -106,6 +106,8 @@
 \let\setuppagenumber\setupuserpagenumber
 \let\resetpagenumber\resetuserpagenumber
 
+% invisible =
+
 \def\strc_pagenumbers_page_state_save % \normalexpanded?
   {\ctxlua{structures.pages.save({
         prefix        = "\namedcounterparameter\s!userpage\c!prefix",
@@ -120,6 +122,9 @@
         conversionset = "\namedcounterparameter\s!userpage\c!numberconversionset",
         starter       = \!!bs\namedcounterparameter\s!userpage\c!numberstarter\!!es,
         stopper       = \!!bs\namedcounterparameter\s!userpage\c!numberstopper\!!es,
+    },{
+        viewerprefix  = \!!bs\namedcounterparameter\s!userpage\c!viewerprefix\!!es,
+        state         = \!!bs\namedcounterparameter\s!userpage\c!state\!!es,
     }
    )}}
 
diff --git a/tex/context/base/util-str.lua b/tex/context/base/util-str.lua
index f04f0e573..4ecaed7d3 100644
--- a/tex/context/base/util-str.lua
+++ b/tex/context/base/util-str.lua
@@ -20,16 +20,24 @@ local utfchar, utfbyte = utf.char, utf.byte
 ----- loadstripped = utilities.lua.loadstripped
 ----- setmetatableindex = table.setmetatableindex
 
--- local loadstripped = _LUAVERSION < 5.2 and load or function(str)
---     return load(dump(load(str),true)) -- it only makes sense in luajit and luatex where we have a stipped load
--- end
+local loadstripped = nil
 
-local loadstripped = function(str,shortcuts)
-    if shortcuts then
-        return load(dump(load(str),true),nil,nil,shortcuts)
-    else
-        return load(dump(load(str),true))
+if _LUAVERSION < 5.2  then
+
+    loadstripped = function(str,shortcuts)
+        return load(str)
+    end
+
+else
+
+    loadstripped = function(str,shortcuts)
+        if shortcuts then
+            return load(dump(load(str),true),nil,nil,shortcuts)
+        else
+            return load(dump(load(str),true))
+        end
     end
+
 end
 
 -- todo: make a special namespace for the formatter
@@ -305,60 +313,58 @@ local template = [[
 return function(%s) return %s end
 ]]
 
--- local environment = {
---     lpeg   = lpeg,
---     type   = type,
---     string = string,
---     number = number,
---     table  = table,
---     utf    = utf,
--- }
---
--- local preamble = [[
--- local type            = type
--- local tostring        = tostring
--- local tonumber        = tonumber
--- local format          = string.format
--- local concat          = table.concat
--- local signed          = number.signed
--- local points          = number.points
--- local basepoints      = number.basepoints
--- local utfchar         = utf.char
--- local utfbyte         = utf.byte
--- local lpegmatch       = lpeg.match
--- local nspaces         = string.nspaces
--- local tracedchar      = string.tracedchar
--- local autosingle      = string.autosingle
--- local autodouble      = string.autodouble
--- local sequenced       = table.sequenced
--- local formattednumber = number.formatted
--- local sparseexponent  = number.sparseexponent
--- ]]
-
-local environment = {
-    global          = global or _G,
-    lpeg            = lpeg,
-    type            = type,
-    tostring        = tostring,
-    tonumber        = tonumber,
-    format          = string.format,
-    concat          = table.concat,
-    signed          = number.signed,
-    points          = number.points,
-    basepoints      = number.basepoints,
-    utfchar         = utf.char,
-    utfbyte         = utf.byte,
-    lpegmatch       = lpeg.match,
-    nspaces         = string.nspaces,
-    tracedchar      = string.tracedchar,
-    autosingle      = string.autosingle,
-    autodouble      = string.autodouble,
-    sequenced       = table.sequenced,
-    formattednumber = number.formatted,
-    sparseexponent  = number.sparseexponent,
-}
+local preamble, environment = "", { }
+
+if _LUAVERSION < 5.2  then
+
+    preamble = [[
+local lpeg=lpeg
+local type=type
+local tostring=tostring
+local tonumber=tonumber
+local format=string.format
+local concat=table.concat
+local signed=number.signed
+local points=number.points
+local basepoints= number.basepoints
+local utfchar=utf.char
+local utfbyte=utf.byte
+local lpegmatch=lpeg.match
+local nspaces=string.nspaces
+local tracedchar=string.tracedchar
+local autosingle=string.autosingle
+local autodouble=string.autodouble
+local sequenced=table.sequenced
+local formattednumber=number.formatted
+local sparseexponent=number.sparseexponent
+    ]]
+
+else
+
+    environment = {
+        global          = global or _G,
+        lpeg            = lpeg,
+        type            = type,
+        tostring        = tostring,
+        tonumber        = tonumber,
+        format          = string.format,
+        concat          = table.concat,
+        signed          = number.signed,
+        points          = number.points,
+        basepoints      = number.basepoints,
+        utfchar         = utf.char,
+        utfbyte         = utf.byte,
+        lpegmatch       = lpeg.match,
+        nspaces         = string.nspaces,
+        tracedchar      = string.tracedchar,
+        autosingle      = string.autosingle,
+        autodouble      = string.autodouble,
+        sequenced       = table.sequenced,
+        formattednumber = number.formatted,
+        sparseexponent  = number.sparseexponent,
+    }
 
-local preamble = ""
+end
 
 -- -- --
 
@@ -869,14 +875,26 @@ strings.formatters = { }
 -- table (metatable) in which case we could better keep a count and
 -- clear that table when a threshold is reached
 
-function strings.formatters.new()
-    local e = { } -- better make a copy as we can overload
-    for k, v in next, environment do
-        e[k] = v
+if _LUAVERSION < 5.2  then
+
+    function strings.formatters.new()
+        local t = { _extensions_ = { }, _preamble_ = preamble, _environment_ = { }, _type_ = "formatter" }
+        setmetatable(t, { __index = make, __call = use })
+        return t
     end
-    local t = { _extensions_ = { }, _preamble_ = "", _environment_ = e, _type_ = "formatter" }
-    setmetatable(t, { __index = make, __call = use })
-    return t
+
+else
+
+    function strings.formatters.new()
+        local e = { } -- better make a copy as we can overload
+        for k, v in next, environment do
+            e[k] = v
+        end
+        local t = { _extensions_ = { }, _preamble_ = "", _environment_ = e, _type_ = "formatter" }
+        setmetatable(t, { __index = make, __call = use })
+        return t
+    end
+
 end
 
 -- function strings.formatters.new()
@@ -921,9 +939,19 @@ patterns.luaquoted = Cs(Cc('"') * ((1-S('"\n'))^1 + P('"')/'\\"' + P('\n')/'\\n"
 -- add(formatters,"tex", [[lpegmatch(texescape,%s)]],[[local texescape = lpeg.patterns.texescape]])
 -- add(formatters,"lua", [[lpegmatch(luaescape,%s)]],[[local luaescape = lpeg.patterns.luaescape]])
 
-add(formatters,"xml", [[lpegmatch(xmlescape,%s)]],{ xmlescape = lpeg.patterns.xmlescape })
-add(formatters,"tex", [[lpegmatch(texescape,%s)]],{ texescape = lpeg.patterns.texescape })
-add(formatters,"lua", [[lpegmatch(luaescape,%s)]],{ luaescape = lpeg.patterns.luaescape })
+if _LUAVERSION < 5.2  then
+
+    add(formatters,"xml",[[lpegmatch(xmlescape,%s)]],"local xmlescape = lpeg.patterns.xmlescape")
+    add(formatters,"tex",[[lpegmatch(texescape,%s)]],"local texescape = lpeg.patterns.texescape")
+    add(formatters,"lua",[[lpegmatch(luaescape,%s)]],"local luaescape = lpeg.patterns.luaescape")
+
+else
+
+    add(formatters,"xml",[[lpegmatch(xmlescape,%s)]],{ xmlescape = lpeg.patterns.xmlescape })
+    add(formatters,"tex",[[lpegmatch(texescape,%s)]],{ texescape = lpeg.patterns.texescape })
+    add(formatters,"lua",[[lpegmatch(luaescape,%s)]],{ luaescape = lpeg.patterns.luaescape })
+
+end
 
 -- -- yes or no:
 --
diff --git a/tex/context/base/util-tab.lua b/tex/context/base/util-tab.lua
index ae44269bb..d235520c4 100644
--- a/tex/context/base/util-tab.lua
+++ b/tex/context/base/util-tab.lua
@@ -316,7 +316,7 @@ function table.fastserialize(t,prefix)
     -- not sorted
     -- only number and string indices (currently)
 
-    local r = { prefix or "return" }
+    local r = { type(prefix) == "string" and prefix or "return" }
     local m = 1
 
     local function fastserialize(t,outer) -- no mixes
@@ -376,7 +376,6 @@ function table.fastserialize(t,prefix)
         end
         return r
     end
-
     return concat(fastserialize(t,true))
 end
 
diff --git a/tex/context/base/x-mathml.lua b/tex/context/base/x-mathml.lua
index e2bb62d12..baf839ad8 100644
--- a/tex/context/base/x-mathml.lua
+++ b/tex/context/base/x-mathml.lua
@@ -82,8 +82,9 @@ local o_replacements = { -- in main table
 
  -- [utfchar(0xF103C)] = "\\mmlleftdelimiter<",
     [utfchar(0xF1026)] = "\\mmlchar{38}",
+    [utfchar(0x02061)]  = "", -- function applicator sometimes shows up in font
  -- [utfchar(0xF103E)] = "\\mmlleftdelimiter>",
--- [utfchar(0xAF)] = '\\mmlchar{"203E}', -- 0x203E
+ -- [utfchar(0x000AF)] = '\\mmlchar{"203E}', -- 0x203E
 }
 
 local simpleoperatorremapper = utf.remapper(o_replacements)
diff --git a/tex/context/base/x-mathml.mkiv b/tex/context/base/x-mathml.mkiv
index 320d19251..5520dbbe6 100644
--- a/tex/context/base/x-mathml.mkiv
+++ b/tex/context/base/x-mathml.mkiv
@@ -2295,7 +2295,7 @@
         } {
             \edef\mmlbasecommand{\utfmathfiller\mmlbasetoken}
             \edef\mmlovercommand{\utfmathfiller\mmlovertoken}
-            \mmlovertriplet{\mmloveros{#1}}{\mmloverbf{#1}}\relax
+            \mmlundertriplet{\mmloverbf{#1}}{\mmloveros{#1}}{}%\relax
         }
     }
   % \limits % spoils spacing
@@ -2344,7 +2344,7 @@
         } {
             \edef\mmlbasecommand {\utfmathfiller\mmlbasetoken}
             \edef\mmlundercommand{\utfmathfiller\mmlundertoken}
-            \mmlundertriplet{\mmlunderus{#1}}{\mmlunderbf{#1}}\relax
+            \mmlundertriplet{\mmlunderbf{#1}}{}{\mmlunderus{#1}}%\relax
         }
     }
   % \limits % spoils spacing
diff --git a/tex/generic/context/luatex/luatex-fonts-merged.lua b/tex/generic/context/luatex/luatex-fonts-merged.lua
index d475be6d7..3f408b96f 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 : luatex-fonts-merged.lua
 -- parent file : luatex-fonts.lua
--- merge date  : 02/13/14 11:27:58
+-- merge date  : 02/14/14 17:07:59
 
 do -- begin closure to overcome local limits and interference
 
@@ -82,7 +82,9 @@ function optionalrequire(...)
     return result
   end
 end
-lua.mask=load([[τεχ = 1]]) and "utf" or "ascii"
+if lua then
+  lua.mask=load([[τεχ = 1]]) and "utf" or "ascii"
+end
 
 end -- closure
 
@@ -2523,11 +2525,18 @@ local unpack,concat=table.unpack,table.concat
 local P,V,C,S,R,Ct,Cs,Cp,Carg,Cc=lpeg.P,lpeg.V,lpeg.C,lpeg.S,lpeg.R,lpeg.Ct,lpeg.Cs,lpeg.Cp,lpeg.Carg,lpeg.Cc
 local patterns,lpegmatch=lpeg.patterns,lpeg.match
 local utfchar,utfbyte=utf.char,utf.byte
-local loadstripped=function(str,shortcuts)
-  if shortcuts then
-    return load(dump(load(str),true),nil,nil,shortcuts)
-  else
-    return load(dump(load(str),true))
+local loadstripped=nil
+if _LUAVERSION<5.2 then
+  loadstripped=function(str,shortcuts)
+    return load(str)
+  end
+else
+  loadstripped=function(str,shortcuts)
+    if shortcuts then
+      return load(dump(load(str),true),nil,nil,shortcuts)
+    else
+      return load(dump(load(str),true))
+    end
   end
 end
 if not number then number={} end 
@@ -2683,29 +2692,53 @@ local template=[[
 %s
 return function(%s) return %s end
 ]]
-local environment={
-  global=global or _G,
-  lpeg=lpeg,
-  type=type,
-  tostring=tostring,
-  tonumber=tonumber,
-  format=string.format,
-  concat=table.concat,
-  signed=number.signed,
-  points=number.points,
-  basepoints=number.basepoints,
-  utfchar=utf.char,
-  utfbyte=utf.byte,
-  lpegmatch=lpeg.match,
-  nspaces=string.nspaces,
-  tracedchar=string.tracedchar,
-  autosingle=string.autosingle,
-  autodouble=string.autodouble,
-  sequenced=table.sequenced,
-  formattednumber=number.formatted,
-  sparseexponent=number.sparseexponent,
-}
-local preamble=""
+local preamble,environment="",{}
+if _LUAVERSION<5.2 then
+  preamble=[[
+local lpeg=lpeg
+local type=type
+local tostring=tostring
+local tonumber=tonumber
+local format=string.format
+local concat=table.concat
+local signed=number.signed
+local points=number.points
+local basepoints= number.basepoints
+local utfchar=utf.char
+local utfbyte=utf.byte
+local lpegmatch=lpeg.match
+local nspaces=string.nspaces
+local tracedchar=string.tracedchar
+local autosingle=string.autosingle
+local autodouble=string.autodouble
+local sequenced=table.sequenced
+local formattednumber=number.formatted
+local sparseexponent=number.sparseexponent
+    ]]
+else
+  environment={
+    global=global or _G,
+    lpeg=lpeg,
+    type=type,
+    tostring=tostring,
+    tonumber=tonumber,
+    format=string.format,
+    concat=table.concat,
+    signed=number.signed,
+    points=number.points,
+    basepoints=number.basepoints,
+    utfchar=utf.char,
+    utfbyte=utf.byte,
+    lpegmatch=lpeg.match,
+    nspaces=string.nspaces,
+    tracedchar=string.tracedchar,
+    autosingle=string.autosingle,
+    autodouble=string.autodouble,
+    sequenced=table.sequenced,
+    formattednumber=number.formatted,
+    sparseexponent=number.sparseexponent,
+  }
+end
 local arguments={ "a1" } 
 setmetatable(arguments,{ __index=function(t,k)
     local v=t[k-1]..",a"..k
@@ -3052,14 +3085,22 @@ local function use(t,fmt,...)
   return t[fmt](...)
 end
 strings.formatters={}
-function strings.formatters.new()
-  local e={} 
-  for k,v in next,environment do
-    e[k]=v
+if _LUAVERSION<5.2 then
+  function strings.formatters.new()
+    local t={ _extensions_={},_preamble_=preamble,_environment_={},_type_="formatter" }
+    setmetatable(t,{ __index=make,__call=use })
+    return t
+  end
+else
+  function strings.formatters.new()
+    local e={} 
+    for k,v in next,environment do
+      e[k]=v
+    end
+    local t={ _extensions_={},_preamble_="",_environment_=e,_type_="formatter" }
+    setmetatable(t,{ __index=make,__call=use })
+    return t
   end
-  local t={ _extensions_={},_preamble_="",_environment_=e,_type_="formatter" }
-  setmetatable(t,{ __index=make,__call=use })
-  return t
 end
 local formatters=strings.formatters.new() 
 string.formatters=formatters 
@@ -3081,9 +3122,15 @@ patterns.xmlescape=Cs((P("<")/"&lt;"+P(">")/"&gt;"+P("&")/"&amp;"+P('"')/"&quot;
 patterns.texescape=Cs((C(S("#$%\\{}"))/"\\%1"+P(1))^0)
 patterns.luaescape=Cs(((1-S('"\n'))^1+P('"')/'\\"'+P('\n')/'\\n"')^0) 
 patterns.luaquoted=Cs(Cc('"')*((1-S('"\n'))^1+P('"')/'\\"'+P('\n')/'\\n"')^0*Cc('"'))
-add(formatters,"xml",[[lpegmatch(xmlescape,%s)]],{ xmlescape=lpeg.patterns.xmlescape })
-add(formatters,"tex",[[lpegmatch(texescape,%s)]],{ texescape=lpeg.patterns.texescape })
-add(formatters,"lua",[[lpegmatch(luaescape,%s)]],{ luaescape=lpeg.patterns.luaescape })
+if _LUAVERSION<5.2 then
+  add(formatters,"xml",[[lpegmatch(xmlescape,%s)]],"local xmlescape = lpeg.patterns.xmlescape")
+  add(formatters,"tex",[[lpegmatch(texescape,%s)]],"local texescape = lpeg.patterns.texescape")
+  add(formatters,"lua",[[lpegmatch(luaescape,%s)]],"local luaescape = lpeg.patterns.luaescape")
+else
+  add(formatters,"xml",[[lpegmatch(xmlescape,%s)]],{ xmlescape=lpeg.patterns.xmlescape })
+  add(formatters,"tex",[[lpegmatch(texescape,%s)]],{ texescape=lpeg.patterns.texescape })
+  add(formatters,"lua",[[lpegmatch(luaescape,%s)]],{ luaescape=lpeg.patterns.luaescape })
+end
 
 end -- closure