2017-03-01 13:47:00

5 files changed, 932 insertions, 775 deletions

diff --git a/scripts/context/lua/mtx-context.lua b/scripts/context/lua/mtx-context.lua
index 95030a91c..d29b3c461 100644
--- a/scripts/context/lua/mtx-context.lua
+++ b/scripts/context/lua/mtx-context.lua
@@ -769,7 +769,7 @@ function scripts.context.run(ctxdata,filename)
                 end
                 --
                 if a_profile then
-                    directives[#directives+1] = "system.profile"
+                    directives[#directives+1] = format("system.profile=%s",tonumber(a_profile) or 0)
                 end
                 --
                 if a_synctex then
@@ -790,6 +790,7 @@ function scripts.context.run(ctxdata,filename)
                     c_flags.forcedruns = multipass_forcedruns and multipass_forcedruns > 0 and multipass_forcedruns or nil
                     c_flags.currentrun = currentrun
                     c_flags.noarrange  = a_noarrange or a_arrange or nil
+                    c_flags.profile    = a_profile and (tonumber(a_profile) or 0) or nil
                     --
                     local command = luatex_command(l_flags,c_flags,mainfile,a_engine)
                     --
@@ -1740,10 +1741,10 @@ do
 end
 
 if getargument("once") then
-    multipass_nofruns    = 1
+    multipass_nofruns = 1
 else
     if getargument("runs") then
-        multipass_nofruns    = tonumber(getargument("runs")) or nil
+        multipass_nofruns = tonumber(getargument("runs")) or nil
     end
     multipass_forcedruns = tonumber(getargument("forcedruns")) or nil
 end
diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua
index 0c3355fcc..6aae96c4f 100644
--- a/scripts/context/lua/mtxrun.lua
+++ b/scripts/context/lua/mtxrun.lua
@@ -2675,7 +2675,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-io"] = package.loaded["l-io"] or true
 
--- original size: 10421, stripped down to: 7499
+-- original size: 12255, stripped down to: 7256
 
 if not modules then modules={} end modules ['l-io']={
   version=1.001,
@@ -2695,44 +2695,30 @@ if string.find(os.getenv("PATH"),";",1,true) then
 else
   io.fileseparator,io.pathseparator="/",":"
 end
-local function readall(f)
-  return f:read("*all")
-end
+local large=2^24    
+local medium=large/16 
+local small=medium/8
 local function readall(f)
   local size=f:seek("end")
-  if size==0 then
-    return ""
-  end
-  f:seek("set",0)
-  if size<1024*1024 then
-    return f:read('*all')
+  if size>0 then
+    f:seek("set",0)
+    return f:read(size)
   else
-    local step
-    if size>16*1024*1024 then
-      step=16*1024*1024
-    else
-      step=floor(size/(1024*1024))*1024*1024/8
-    end
-    local data={}
-    while true do
-      local r=f:read(step)
-      if not r then
-        return concat(data)
-      else
-        data[#data+1]=r
-      end
-    end
+    return ""
   end
 end
 io.readall=readall
 function io.loaddata(filename,textmode) 
   local f=open(filename,(textmode and 'r') or 'rb')
   if f then
-    local data=readall(f)
-    f:close()
-    if #data>0 then
-      return data
+    local size=f:seek("end")
+    local data=nil
+    if size>0 then
+      f:seek("set",0)
+      data=f:read(size)
     end
+    f:close()
+    return data
   end
 end
 function io.copydata(source,target,action)
@@ -2741,37 +2727,14 @@ function io.copydata(source,target,action)
     local g=open(target,"wb")
     if g then
       local size=f:seek("end")
-      if size==0 then
-      else
+      if size>0 then
         f:seek("set",0)
-        if size<1024*1024 then
-          local data=f:read('*all')
-          if action then
-            data=action(data)
-          end
-          if data then
-            g:write(data)
-          end
-        else
-          local step
-          if size>16*1024*1024 then
-            step=16*1024*1024
-          else
-            step=floor(size/(1024*1024))*1024*1024/8
-          end
-          while true do
-            local data=f:read(step)
-            if data then
-              if action then
-                data=action(data)
-              end
-              if data then
-                g:write(data)
-              end
-            else
-              break
-            end
-          end
+        local data=f:read(size)
+        if action then
+          data=action(data)
+        end
+        if data then
+          g:write(data)
         end
       end
       g:close()
@@ -2797,29 +2760,59 @@ function io.savedata(filename,data,joiner)
     return false
   end
 end
-function io.loadlines(filename,n) 
-  local f=open(filename,'r')
-  if not f then
-  elseif n then
-    local lines={}
-    for i=1,n do
-      local line=f:read("*lines")
-      if line then
-        lines[#lines+1]=line
-      else
-        break
+if fio.readline then
+  local readline=fio.readline
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=readline(f)
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=readline(f)
+      f:close()
+      if line and #line>0 then
+        return line
       end
     end
-    f:close()
-    lines=concat(lines,"\n")
-    if #lines>0 then
-      return lines
-    end
-  else
-    local line=f:read("*line") or ""
-    f:close()
-    if #line>0 then
-      return line
+  end
+else
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=f:read("*lines")
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=f:read("*line") or ""
+      f:close()
+      if #line>0 then
+        return line
+      end
     end
   end
 end
@@ -2980,7 +2973,7 @@ function io.ask(question,default,options)
     end
   end
 end
-local function readnumber(f,n,m)
+local function readnumber(f,n,m) 
   if m then
     f:seek("set",n)
     n=m
@@ -2989,31 +2982,31 @@ local function readnumber(f,n,m)
     return byte(f:read(1))
   elseif n==2 then
     local a,b=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==3 then
     local a,b,c=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==4 then
     local a,b,c,d=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==8 then
     local a,b=readnumber(f,4),readnumber(f,4)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==12 then
     local a,b,c=readnumber(f,4),readnumber(f,4),readnumber(f,4)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-2 then
     local b,a=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==-3 then
     local c,b,a=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-4 then
     local d,c,b,a=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==-8 then
     local h,g,f,e,d,c,b,a=byte(f:read(8),1,8)
-    return 256*256*256*256*256*256*256*a+256*256*256*256*256*256*b+256*256*256*256*256*c+256*256*256*256*d+256*256*256*e+256*256*f+256*g+h
+    return 0x100000000000000*a+0x1000000000000*b+0x10000000000*c+0x100000000*d+0x1000000*e+0x10000*f+0x100*g+h
   else
     return 0
   end
@@ -3274,7 +3267,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-os"] = package.loaded["l-os"] or true
 
--- original size: 16520, stripped down to: 9519
+-- original size: 16834, stripped down to: 9513
 
 if not modules then modules={} end modules ['l-os']={
   version=1.001,
@@ -3610,7 +3603,7 @@ if not os.sleep then
   end
 end
 local function isleapyear(year)
-  return (year%400==0) or ((year%100~=0) and (year%4==0))
+  return (year%4==0) and (year%100~=0 or year%400==0)
 end
 os.isleapyear=isleapyear
 local days={ 31,28,31,30,31,30,31,31,30,31,30,31 }
@@ -7042,7 +7035,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-fil"] = package.loaded["util-fil"] or true
 
--- original size: 6362, stripped down to: 4907
+-- original size: 7597, stripped down to: 5761
 
 if not modules then modules={} end modules ['util-fil']={
   version=1.001,
@@ -7111,6 +7104,10 @@ end
 function files.readbytes(f,n)
   return byte(f:read(n),1,n)
 end
+function files.readbytetable(f,n)
+  local s=f:read(n or 1)
+  return { byte(s,1,#s) } 
+end
 function files.readchar(f)
   return f:read(1)
 end
@@ -7199,21 +7196,12 @@ function files.readcardinal4le(f)
 end
 function files.readinteger4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x1000000*a+0x10000*b+0x100*c+d
-  if n>=0x8000000 then
-    return n-0x100000000
+  if a>=0x80 then
+    return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
   else
-    return n
+    return 0x1000000*a+0x10000*b+0x100*c+d
   end
 end
-  function files.readinteger4(f)
-    local a,b,c,d=byte(f:read(4),1,4)
-    if a>=0x80 then
-      return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
-    else
-      return 0x1000000*a+0x10000*b+0x100*c+d
-    end
-  end
 function files.readinteger4le(f)
   local d,c,b,a=byte(f:read(4),1,4)
   local n=0x1000000*a+0x10000*b+0x100*c+d
@@ -7225,11 +7213,10 @@ function files.readinteger4le(f)
 end
 function files.readfixed4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x100*a+b
-  if n>=0x8000 then
-    return n-0x10000+(0x100*c+d)/0xFFFF
+  if a>=0x80 then
+    return (0x1000000*a+0x10000*b+0x100*c+d-0x100000000)/65536.0
   else
-    return n+(0x100*c+d)/0xFFFF
+    return (0x1000000*a+0x10000*b+0x100*c+d)/65536.0
   end
 end
 if extract then
@@ -7274,6 +7261,34 @@ end
 function files.writebyte(f,b)
   f:write(char(b))
 end
+if fio and fio.readcardinal1 then
+  files.readcardinal1=fio.readcardinal1
+  files.readcardinal2=fio.readcardinal2
+  files.readcardinal3=fio.readcardinal3
+  files.readcardinal4=fio.readcardinal4
+  files.readinteger1=fio.readinteger1
+  files.readinteger2=fio.readinteger2
+  files.readinteger3=fio.readinteger3
+  files.readinteger4=fio.readinteger4
+  files.readfixed4=fio.readfixed4
+  files.read2dot14=fio.read2dot14
+  files.setposition=fio.setposition
+  files.getposition=fio.getposition
+  files.readbyte=files.readcardinel1
+  files.readsignedbyte=files.readinteger1
+  files.readcardinal=files.readcardinal1
+  files.readinteger=files.readinteger1
+  local skipposition=fio.skipposition
+  files.skipposition=skipposition
+  files.readbytes=fio.readbytes
+  files.readbytetable=fio.readbytetable
+  function files.skipshort(f,n)
+    skipposition(f,2*(n or 1))
+  end
+  function files.skiplong(f,n)
+    skipposition(f,4*(n or 1))
+  end
+end
 
 
 end -- of closure
@@ -7282,7 +7297,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-sac"] = package.loaded["util-sac"] or true
 
--- original size: 4360, stripped down to: 3409
+-- original size: 4634, stripped down to: 3514
 
 if not modules then modules={} end modules ['util-sac']={
   version=1.001,
@@ -7350,6 +7365,12 @@ function streams.readbytes(f,n)
   f[2]=j
   return byte(f[1],i,j-1)
 end
+function streams.readbytetable(f,n)
+  local i=f[2]
+  local j=i+n
+  f[2]=j
+  return { byte(f[1],i,j-1) }
+end
 function streams.skipbytes(f,n)
   f[2]=f[2]+n
 end
@@ -7369,7 +7390,7 @@ function streams.readinteger1(f)
   f[2]=i+1
   local n=byte(f[1],i)
   if n>=0x80 then
-    return n-0xFF-1
+    return n-0x100
   else
     return n
   end
@@ -7391,7 +7412,7 @@ function streams.readinteger2(f)
   local a,b=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1
+    return n-0x10000
   else
     return n
   end
@@ -7417,7 +7438,7 @@ function streams.readinteger4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x1000000*a+0x10000*b+0x100*c+d
   if n>=0x8000000 then
-    return n-0xFFFFFFFF-1
+    return n-0x100000000
   else
     return n
   end
@@ -7429,7 +7450,7 @@ function streams.readfixed4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1+(0x100*c+d)/0xFFFF
+    return n-0x10000+(0x100*c+d)/0xFFFF
   else
     return n+(0x100*c+d)/0xFFFF
   end
@@ -9826,7 +9847,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-deb"] = package.loaded["util-deb"] or true
 
--- original size: 8473, stripped down to: 6211
+-- original size: 9211, stripped down to: 6727
 
 if not modules then modules={} end modules ['util-deb']={
   version=1.001,
@@ -9837,9 +9858,10 @@ if not modules then modules={} end modules ['util-deb']={
 }
 local debug=require "debug"
 local getinfo,sethook=debug.getinfo,debug.sethook
-local type,next,tostring=type,next,tostring
+local type,next,tostring,tonumber=type,next,tostring,tonumber
 local format,find,sub,gsub=string.format,string.find,string.sub,string.gsub
 local insert,remove,sort=table.insert,table.remove,table.sort
+local setmetatableindex=table.setmetatableindex
 utilities=utilities or {}
 local debugger=utilities.debugger or {}
 utilities.debugger=debugger
@@ -9850,55 +9872,62 @@ local overhead=0
 local dummycalls=10*1000
 local nesting=0
 local names={}
-local function initialize()
-  if FFISUPPORTED and ffi then
-    if os.type=="windows" then
-      local okay,kernel=pcall(ffi.load,"kernel32")
-      if kernel then
-        local tonumber=ffi.number or tonumber
-ffi.cdef[[
-int QueryPerformanceFrequency(int64_t *lpFrequency);
-int QueryPerformanceCounter(int64_t *lpPerformanceCount);
-]]
-        local target=ffi.new("__int64[1]")
-        ticks=function()
-          if kernel.QueryPerformanceCounter(target)==1 then
-            return tonumber(target[0])
-          else
-            return 0
-          end
-        end
-        local target=ffi.new("__int64[1]")
-        seconds=function(ticks)
-          if kernel.QueryPerformanceFrequency(target)==1 then
-            return ticks/tonumber(target[0])
-          else
-            return 0
-          end
-        end
-      end
-    elseif os.type=="unix" then
-      local C=ffi.C
+local initialize=false
+if not (FFISUPPORTED and ffi) then
+elseif os.type=="windows" then
+  initialize=function()
+    local kernel=ffilib("kernel32","system") 
+    if kernel then
       local tonumber=ffi.number or tonumber
-ffi.cdef [[
-struct timespec { long sec; long nsec; };
-int clock_gettime(int timerid, struct timespec *t);
-   ]]
-      local target=ffi.new("timespec[?]",1)
-      function ticks()
-        C.clock_gettime(2,target)
-        return tonumber(target[0].sec*1000000000+target[0].nsec)
+      ffi.cdef[[
+                int QueryPerformanceFrequency(int64_t *lpFrequency);
+                int QueryPerformanceCounter(int64_t *lpPerformanceCount);
+            ]]
+      local target=ffi.new("__int64[1]")
+      ticks=function()
+        if kernel.QueryPerformanceCounter(target)==1 then
+          return tonumber(target[0])
+        else
+          return 0
+        end
       end
+      local target=ffi.new("__int64[1]")
       seconds=function(ticks)
-        return ticks/1000000000
+        if kernel.QueryPerformanceFrequency(target)==1 then
+          return ticks/tonumber(target[0])
+        else
+          return 0
+        end
       end
     end
+    initialize=false
   end
-  initialize=false
-end
-table.setmetatableindex(names,function(t,name)
-  local v=table.setmetatableindex(function(t,source)
-    local v=table.setmetatableindex(function(t,line)
+elseif os.type=="unix" then
+  initialize=function()
+    local C=ffi.C
+    local tonumber=ffi.number or tonumber
+    ffi.cdef [[
+            /* what a mess */
+            typedef int clk_id_t;
+            typedef enum { CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_PROCESS_CPUTIME_ID } clk_id;
+            typedef struct timespec { long sec; long nsec; } ctx_timespec;
+            int clock_gettime(clk_id_t timerid, struct timespec *t);
+        ]]
+    local target=ffi.new("ctx_timespec[?]",1)
+    local clock=C.CLOCK_PROCESS_CPUTIME_ID
+    ticks=function ()
+      C.clock_gettime(clock,target)
+      return tonumber(target[0].sec*1000000000+target[0].nsec)
+    end
+    seconds=function(ticks)
+      return ticks/1000000000
+    end
+    initialize=false
+  end
+end
+setmetatableindex(names,function(t,name)
+  local v=setmetatableindex(function(t,source)
+    local v=setmetatableindex(function(t,line)
       local v={ total=0,count=0 }
       t[line]=v
       return v
@@ -9938,33 +9967,36 @@ local function hook(where)
     end
   end
 end
-function debugger.showstats(printer)
+function debugger.showstats(printer,threshold)
   local printer=printer or report
   local calls=0
   local functions=0
   local dataset={}
   local length=0
   local wholetime=0
+  local threshold=threshold or 0
   for name,sources in next,names do
     for source,lines in next,sources do
       for line,data in next,lines do
-        if #name>length then
-          length=#name
-        end
-        local total=data.total
         local count=data.count
-        local real=total
-        if real>0 then
-          real=total-(count*overhead/dummycalls)
-          if real<0 then
-            real=0
+        if count>threshold then
+          if #name>length then
+            length=#name
           end
-          wholetime=wholetime+real
-        end
-        if line<0 then
-          line=0
+          local total=data.total
+          local real=total
+          if real>0 then
+            real=total-(count*overhead/dummycalls)
+            if real<0 then
+              real=0
+            end
+            wholetime=wholetime+real
+          end
+          if line<0 then
+            line=0
+          end
+          dataset[#dataset+1]={ real,total,count,name,source,line }
         end
-        dataset[#dataset+1]={ real,total,count,name,source,line }
       end
     end
   end
@@ -10017,10 +10049,10 @@ function debugger.showstats(printer)
   printer(format("calls     : %i",calls))
   printer(format("overhead  : %f",seconds(overhead/1000)))
 end
-function debugger.savestats(filename)
+function debugger.savestats(filename,threshold)
   local f=io.open(filename,'w')
   if f then
-    debugger.showstats(function(str) f:write(str,"\n") end)
+    debugger.showstats(function(str) f:write(str,"\n") end,threshold)
     f:close()
   end
 end
@@ -11231,7 +11263,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-tab"] = package.loaded["lxml-tab"] or true
 
--- original size: 58068, stripped down to: 36652
+-- original size: 58012, stripped down to: 36637
 
 if not modules then modules={} end modules ['lxml-tab']={
   version=1.001,
@@ -11373,7 +11405,7 @@ local function add_empty(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=top
   }
   dt[nt]=t
@@ -11395,7 +11427,7 @@ local function add_begin(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=stack[level]
   }
   setmetatable(top,mt)
@@ -11422,7 +11454,6 @@ local function add_end(spacing,namespace,tag)
   end
   dt=top.dt
   nt=#dt+1
-  toclose.ni=nt
   dt[nt]=toclose
   if toclose.at.xmlns then
     remove(xmlns)
@@ -11472,7 +11503,7 @@ local function add_special(what,spacing,text)
       special=true,
       ns="",
       tg=what,
-      ni=nt,
+      ni=nil,
       dt={ text },
     }
   end
@@ -12589,7 +12620,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-lpt"] = package.loaded["lxml-lpt"] or true
 
--- original size: 54930, stripped down to: 33354
+-- original size: 54921, stripped down to: 33410
 
 if not modules then modules={} end modules ['lxml-lpt']={
   version=1.001,
@@ -12680,6 +12711,7 @@ apply_axis['child']=function(list)
         if dk.tg then
           c=c+1
           collected[c]=dk
+          dk.ni=k 
           en=en+1
           dk.ei=en
         end
@@ -12698,6 +12730,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -12723,6 +12756,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -19624,7 +19658,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-lib"] = package.loaded["util-lib"] or true
 
--- original size: 13648, stripped down to: 7455
+-- original size: 13748, stripped down to: 7544
 
 if not modules then modules={} end modules ['util-lib']={
   version=1.001,
@@ -19841,15 +19875,20 @@ if FFISUPPORTED and ffi and ffi.load then
   local trace_ffilib=false
   local savedffiload=ffi.load
   trackers.register("resolvers.ffilib",function(v) trace_ffilib=v end)
+  local function locateindeed(name)
+    local message,library=pcall(savedffiload,removesuffix(name))
+    if type(library)=="userdata" then
+      return library
+    else
+      return false
+    end
+  end
   function ffilib(required,version)
-    return locate(required,version,trace_ffilib,report_ffilib,function(name)
-      local message,library=pcall(savedffiload,removesuffix(name))
-      if type(library)=="userdata" then
-        return message,library
-      else
-        return message,false
-      end
-    end)
+    if version=="system" then
+      return locateindeed(name)
+    else
+      return locate(required,version,trace_ffilib,report_ffilib,locateindeed)
+    end
   end
   function ffi.load(name)
     local library=ffilib(name)
@@ -20204,8 +20243,8 @@ end -- of closure
 
 -- used libraries    : l-lua.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua util-lib.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 855737
--- stripped bytes    : 310443
+-- original bytes    : 860167
+-- stripped bytes    : 313517
 
 -- end library merge
 
diff --git a/scripts/context/stubs/mswin/mtxrun.lua b/scripts/context/stubs/mswin/mtxrun.lua
index 0c3355fcc..6aae96c4f 100644
--- a/scripts/context/stubs/mswin/mtxrun.lua
+++ b/scripts/context/stubs/mswin/mtxrun.lua
@@ -2675,7 +2675,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-io"] = package.loaded["l-io"] or true
 
--- original size: 10421, stripped down to: 7499
+-- original size: 12255, stripped down to: 7256
 
 if not modules then modules={} end modules ['l-io']={
   version=1.001,
@@ -2695,44 +2695,30 @@ if string.find(os.getenv("PATH"),";",1,true) then
 else
   io.fileseparator,io.pathseparator="/",":"
 end
-local function readall(f)
-  return f:read("*all")
-end
+local large=2^24    
+local medium=large/16 
+local small=medium/8
 local function readall(f)
   local size=f:seek("end")
-  if size==0 then
-    return ""
-  end
-  f:seek("set",0)
-  if size<1024*1024 then
-    return f:read('*all')
+  if size>0 then
+    f:seek("set",0)
+    return f:read(size)
   else
-    local step
-    if size>16*1024*1024 then
-      step=16*1024*1024
-    else
-      step=floor(size/(1024*1024))*1024*1024/8
-    end
-    local data={}
-    while true do
-      local r=f:read(step)
-      if not r then
-        return concat(data)
-      else
-        data[#data+1]=r
-      end
-    end
+    return ""
   end
 end
 io.readall=readall
 function io.loaddata(filename,textmode) 
   local f=open(filename,(textmode and 'r') or 'rb')
   if f then
-    local data=readall(f)
-    f:close()
-    if #data>0 then
-      return data
+    local size=f:seek("end")
+    local data=nil
+    if size>0 then
+      f:seek("set",0)
+      data=f:read(size)
     end
+    f:close()
+    return data
   end
 end
 function io.copydata(source,target,action)
@@ -2741,37 +2727,14 @@ function io.copydata(source,target,action)
     local g=open(target,"wb")
     if g then
       local size=f:seek("end")
-      if size==0 then
-      else
+      if size>0 then
         f:seek("set",0)
-        if size<1024*1024 then
-          local data=f:read('*all')
-          if action then
-            data=action(data)
-          end
-          if data then
-            g:write(data)
-          end
-        else
-          local step
-          if size>16*1024*1024 then
-            step=16*1024*1024
-          else
-            step=floor(size/(1024*1024))*1024*1024/8
-          end
-          while true do
-            local data=f:read(step)
-            if data then
-              if action then
-                data=action(data)
-              end
-              if data then
-                g:write(data)
-              end
-            else
-              break
-            end
-          end
+        local data=f:read(size)
+        if action then
+          data=action(data)
+        end
+        if data then
+          g:write(data)
         end
       end
       g:close()
@@ -2797,29 +2760,59 @@ function io.savedata(filename,data,joiner)
     return false
   end
 end
-function io.loadlines(filename,n) 
-  local f=open(filename,'r')
-  if not f then
-  elseif n then
-    local lines={}
-    for i=1,n do
-      local line=f:read("*lines")
-      if line then
-        lines[#lines+1]=line
-      else
-        break
+if fio.readline then
+  local readline=fio.readline
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=readline(f)
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=readline(f)
+      f:close()
+      if line and #line>0 then
+        return line
       end
     end
-    f:close()
-    lines=concat(lines,"\n")
-    if #lines>0 then
-      return lines
-    end
-  else
-    local line=f:read("*line") or ""
-    f:close()
-    if #line>0 then
-      return line
+  end
+else
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=f:read("*lines")
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=f:read("*line") or ""
+      f:close()
+      if #line>0 then
+        return line
+      end
     end
   end
 end
@@ -2980,7 +2973,7 @@ function io.ask(question,default,options)
     end
   end
 end
-local function readnumber(f,n,m)
+local function readnumber(f,n,m) 
   if m then
     f:seek("set",n)
     n=m
@@ -2989,31 +2982,31 @@ local function readnumber(f,n,m)
     return byte(f:read(1))
   elseif n==2 then
     local a,b=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==3 then
     local a,b,c=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==4 then
     local a,b,c,d=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==8 then
     local a,b=readnumber(f,4),readnumber(f,4)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==12 then
     local a,b,c=readnumber(f,4),readnumber(f,4),readnumber(f,4)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-2 then
     local b,a=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==-3 then
     local c,b,a=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-4 then
     local d,c,b,a=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==-8 then
     local h,g,f,e,d,c,b,a=byte(f:read(8),1,8)
-    return 256*256*256*256*256*256*256*a+256*256*256*256*256*256*b+256*256*256*256*256*c+256*256*256*256*d+256*256*256*e+256*256*f+256*g+h
+    return 0x100000000000000*a+0x1000000000000*b+0x10000000000*c+0x100000000*d+0x1000000*e+0x10000*f+0x100*g+h
   else
     return 0
   end
@@ -3274,7 +3267,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-os"] = package.loaded["l-os"] or true
 
--- original size: 16520, stripped down to: 9519
+-- original size: 16834, stripped down to: 9513
 
 if not modules then modules={} end modules ['l-os']={
   version=1.001,
@@ -3610,7 +3603,7 @@ if not os.sleep then
   end
 end
 local function isleapyear(year)
-  return (year%400==0) or ((year%100~=0) and (year%4==0))
+  return (year%4==0) and (year%100~=0 or year%400==0)
 end
 os.isleapyear=isleapyear
 local days={ 31,28,31,30,31,30,31,31,30,31,30,31 }
@@ -7042,7 +7035,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-fil"] = package.loaded["util-fil"] or true
 
--- original size: 6362, stripped down to: 4907
+-- original size: 7597, stripped down to: 5761
 
 if not modules then modules={} end modules ['util-fil']={
   version=1.001,
@@ -7111,6 +7104,10 @@ end
 function files.readbytes(f,n)
   return byte(f:read(n),1,n)
 end
+function files.readbytetable(f,n)
+  local s=f:read(n or 1)
+  return { byte(s,1,#s) } 
+end
 function files.readchar(f)
   return f:read(1)
 end
@@ -7199,21 +7196,12 @@ function files.readcardinal4le(f)
 end
 function files.readinteger4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x1000000*a+0x10000*b+0x100*c+d
-  if n>=0x8000000 then
-    return n-0x100000000
+  if a>=0x80 then
+    return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
   else
-    return n
+    return 0x1000000*a+0x10000*b+0x100*c+d
   end
 end
-  function files.readinteger4(f)
-    local a,b,c,d=byte(f:read(4),1,4)
-    if a>=0x80 then
-      return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
-    else
-      return 0x1000000*a+0x10000*b+0x100*c+d
-    end
-  end
 function files.readinteger4le(f)
   local d,c,b,a=byte(f:read(4),1,4)
   local n=0x1000000*a+0x10000*b+0x100*c+d
@@ -7225,11 +7213,10 @@ function files.readinteger4le(f)
 end
 function files.readfixed4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x100*a+b
-  if n>=0x8000 then
-    return n-0x10000+(0x100*c+d)/0xFFFF
+  if a>=0x80 then
+    return (0x1000000*a+0x10000*b+0x100*c+d-0x100000000)/65536.0
   else
-    return n+(0x100*c+d)/0xFFFF
+    return (0x1000000*a+0x10000*b+0x100*c+d)/65536.0
   end
 end
 if extract then
@@ -7274,6 +7261,34 @@ end
 function files.writebyte(f,b)
   f:write(char(b))
 end
+if fio and fio.readcardinal1 then
+  files.readcardinal1=fio.readcardinal1
+  files.readcardinal2=fio.readcardinal2
+  files.readcardinal3=fio.readcardinal3
+  files.readcardinal4=fio.readcardinal4
+  files.readinteger1=fio.readinteger1
+  files.readinteger2=fio.readinteger2
+  files.readinteger3=fio.readinteger3
+  files.readinteger4=fio.readinteger4
+  files.readfixed4=fio.readfixed4
+  files.read2dot14=fio.read2dot14
+  files.setposition=fio.setposition
+  files.getposition=fio.getposition
+  files.readbyte=files.readcardinel1
+  files.readsignedbyte=files.readinteger1
+  files.readcardinal=files.readcardinal1
+  files.readinteger=files.readinteger1
+  local skipposition=fio.skipposition
+  files.skipposition=skipposition
+  files.readbytes=fio.readbytes
+  files.readbytetable=fio.readbytetable
+  function files.skipshort(f,n)
+    skipposition(f,2*(n or 1))
+  end
+  function files.skiplong(f,n)
+    skipposition(f,4*(n or 1))
+  end
+end
 
 
 end -- of closure
@@ -7282,7 +7297,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-sac"] = package.loaded["util-sac"] or true
 
--- original size: 4360, stripped down to: 3409
+-- original size: 4634, stripped down to: 3514
 
 if not modules then modules={} end modules ['util-sac']={
   version=1.001,
@@ -7350,6 +7365,12 @@ function streams.readbytes(f,n)
   f[2]=j
   return byte(f[1],i,j-1)
 end
+function streams.readbytetable(f,n)
+  local i=f[2]
+  local j=i+n
+  f[2]=j
+  return { byte(f[1],i,j-1) }
+end
 function streams.skipbytes(f,n)
   f[2]=f[2]+n
 end
@@ -7369,7 +7390,7 @@ function streams.readinteger1(f)
   f[2]=i+1
   local n=byte(f[1],i)
   if n>=0x80 then
-    return n-0xFF-1
+    return n-0x100
   else
     return n
   end
@@ -7391,7 +7412,7 @@ function streams.readinteger2(f)
   local a,b=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1
+    return n-0x10000
   else
     return n
   end
@@ -7417,7 +7438,7 @@ function streams.readinteger4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x1000000*a+0x10000*b+0x100*c+d
   if n>=0x8000000 then
-    return n-0xFFFFFFFF-1
+    return n-0x100000000
   else
     return n
   end
@@ -7429,7 +7450,7 @@ function streams.readfixed4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1+(0x100*c+d)/0xFFFF
+    return n-0x10000+(0x100*c+d)/0xFFFF
   else
     return n+(0x100*c+d)/0xFFFF
   end
@@ -9826,7 +9847,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-deb"] = package.loaded["util-deb"] or true
 
--- original size: 8473, stripped down to: 6211
+-- original size: 9211, stripped down to: 6727
 
 if not modules then modules={} end modules ['util-deb']={
   version=1.001,
@@ -9837,9 +9858,10 @@ if not modules then modules={} end modules ['util-deb']={
 }
 local debug=require "debug"
 local getinfo,sethook=debug.getinfo,debug.sethook
-local type,next,tostring=type,next,tostring
+local type,next,tostring,tonumber=type,next,tostring,tonumber
 local format,find,sub,gsub=string.format,string.find,string.sub,string.gsub
 local insert,remove,sort=table.insert,table.remove,table.sort
+local setmetatableindex=table.setmetatableindex
 utilities=utilities or {}
 local debugger=utilities.debugger or {}
 utilities.debugger=debugger
@@ -9850,55 +9872,62 @@ local overhead=0
 local dummycalls=10*1000
 local nesting=0
 local names={}
-local function initialize()
-  if FFISUPPORTED and ffi then
-    if os.type=="windows" then
-      local okay,kernel=pcall(ffi.load,"kernel32")
-      if kernel then
-        local tonumber=ffi.number or tonumber
-ffi.cdef[[
-int QueryPerformanceFrequency(int64_t *lpFrequency);
-int QueryPerformanceCounter(int64_t *lpPerformanceCount);
-]]
-        local target=ffi.new("__int64[1]")
-        ticks=function()
-          if kernel.QueryPerformanceCounter(target)==1 then
-            return tonumber(target[0])
-          else
-            return 0
-          end
-        end
-        local target=ffi.new("__int64[1]")
-        seconds=function(ticks)
-          if kernel.QueryPerformanceFrequency(target)==1 then
-            return ticks/tonumber(target[0])
-          else
-            return 0
-          end
-        end
-      end
-    elseif os.type=="unix" then
-      local C=ffi.C
+local initialize=false
+if not (FFISUPPORTED and ffi) then
+elseif os.type=="windows" then
+  initialize=function()
+    local kernel=ffilib("kernel32","system") 
+    if kernel then
       local tonumber=ffi.number or tonumber
-ffi.cdef [[
-struct timespec { long sec; long nsec; };
-int clock_gettime(int timerid, struct timespec *t);
-   ]]
-      local target=ffi.new("timespec[?]",1)
-      function ticks()
-        C.clock_gettime(2,target)
-        return tonumber(target[0].sec*1000000000+target[0].nsec)
+      ffi.cdef[[
+                int QueryPerformanceFrequency(int64_t *lpFrequency);
+                int QueryPerformanceCounter(int64_t *lpPerformanceCount);
+            ]]
+      local target=ffi.new("__int64[1]")
+      ticks=function()
+        if kernel.QueryPerformanceCounter(target)==1 then
+          return tonumber(target[0])
+        else
+          return 0
+        end
       end
+      local target=ffi.new("__int64[1]")
       seconds=function(ticks)
-        return ticks/1000000000
+        if kernel.QueryPerformanceFrequency(target)==1 then
+          return ticks/tonumber(target[0])
+        else
+          return 0
+        end
       end
     end
+    initialize=false
   end
-  initialize=false
-end
-table.setmetatableindex(names,function(t,name)
-  local v=table.setmetatableindex(function(t,source)
-    local v=table.setmetatableindex(function(t,line)
+elseif os.type=="unix" then
+  initialize=function()
+    local C=ffi.C
+    local tonumber=ffi.number or tonumber
+    ffi.cdef [[
+            /* what a mess */
+            typedef int clk_id_t;
+            typedef enum { CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_PROCESS_CPUTIME_ID } clk_id;
+            typedef struct timespec { long sec; long nsec; } ctx_timespec;
+            int clock_gettime(clk_id_t timerid, struct timespec *t);
+        ]]
+    local target=ffi.new("ctx_timespec[?]",1)
+    local clock=C.CLOCK_PROCESS_CPUTIME_ID
+    ticks=function ()
+      C.clock_gettime(clock,target)
+      return tonumber(target[0].sec*1000000000+target[0].nsec)
+    end
+    seconds=function(ticks)
+      return ticks/1000000000
+    end
+    initialize=false
+  end
+end
+setmetatableindex(names,function(t,name)
+  local v=setmetatableindex(function(t,source)
+    local v=setmetatableindex(function(t,line)
       local v={ total=0,count=0 }
       t[line]=v
       return v
@@ -9938,33 +9967,36 @@ local function hook(where)
     end
   end
 end
-function debugger.showstats(printer)
+function debugger.showstats(printer,threshold)
   local printer=printer or report
   local calls=0
   local functions=0
   local dataset={}
   local length=0
   local wholetime=0
+  local threshold=threshold or 0
   for name,sources in next,names do
     for source,lines in next,sources do
       for line,data in next,lines do
-        if #name>length then
-          length=#name
-        end
-        local total=data.total
         local count=data.count
-        local real=total
-        if real>0 then
-          real=total-(count*overhead/dummycalls)
-          if real<0 then
-            real=0
+        if count>threshold then
+          if #name>length then
+            length=#name
           end
-          wholetime=wholetime+real
-        end
-        if line<0 then
-          line=0
+          local total=data.total
+          local real=total
+          if real>0 then
+            real=total-(count*overhead/dummycalls)
+            if real<0 then
+              real=0
+            end
+            wholetime=wholetime+real
+          end
+          if line<0 then
+            line=0
+          end
+          dataset[#dataset+1]={ real,total,count,name,source,line }
         end
-        dataset[#dataset+1]={ real,total,count,name,source,line }
       end
     end
   end
@@ -10017,10 +10049,10 @@ function debugger.showstats(printer)
   printer(format("calls     : %i",calls))
   printer(format("overhead  : %f",seconds(overhead/1000)))
 end
-function debugger.savestats(filename)
+function debugger.savestats(filename,threshold)
   local f=io.open(filename,'w')
   if f then
-    debugger.showstats(function(str) f:write(str,"\n") end)
+    debugger.showstats(function(str) f:write(str,"\n") end,threshold)
     f:close()
   end
 end
@@ -11231,7 +11263,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-tab"] = package.loaded["lxml-tab"] or true
 
--- original size: 58068, stripped down to: 36652
+-- original size: 58012, stripped down to: 36637
 
 if not modules then modules={} end modules ['lxml-tab']={
   version=1.001,
@@ -11373,7 +11405,7 @@ local function add_empty(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=top
   }
   dt[nt]=t
@@ -11395,7 +11427,7 @@ local function add_begin(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=stack[level]
   }
   setmetatable(top,mt)
@@ -11422,7 +11454,6 @@ local function add_end(spacing,namespace,tag)
   end
   dt=top.dt
   nt=#dt+1
-  toclose.ni=nt
   dt[nt]=toclose
   if toclose.at.xmlns then
     remove(xmlns)
@@ -11472,7 +11503,7 @@ local function add_special(what,spacing,text)
       special=true,
       ns="",
       tg=what,
-      ni=nt,
+      ni=nil,
       dt={ text },
     }
   end
@@ -12589,7 +12620,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-lpt"] = package.loaded["lxml-lpt"] or true
 
--- original size: 54930, stripped down to: 33354
+-- original size: 54921, stripped down to: 33410
 
 if not modules then modules={} end modules ['lxml-lpt']={
   version=1.001,
@@ -12680,6 +12711,7 @@ apply_axis['child']=function(list)
         if dk.tg then
           c=c+1
           collected[c]=dk
+          dk.ni=k 
           en=en+1
           dk.ei=en
         end
@@ -12698,6 +12730,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -12723,6 +12756,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -19624,7 +19658,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-lib"] = package.loaded["util-lib"] or true
 
--- original size: 13648, stripped down to: 7455
+-- original size: 13748, stripped down to: 7544
 
 if not modules then modules={} end modules ['util-lib']={
   version=1.001,
@@ -19841,15 +19875,20 @@ if FFISUPPORTED and ffi and ffi.load then
   local trace_ffilib=false
   local savedffiload=ffi.load
   trackers.register("resolvers.ffilib",function(v) trace_ffilib=v end)
+  local function locateindeed(name)
+    local message,library=pcall(savedffiload,removesuffix(name))
+    if type(library)=="userdata" then
+      return library
+    else
+      return false
+    end
+  end
   function ffilib(required,version)
-    return locate(required,version,trace_ffilib,report_ffilib,function(name)
-      local message,library=pcall(savedffiload,removesuffix(name))
-      if type(library)=="userdata" then
-        return message,library
-      else
-        return message,false
-      end
-    end)
+    if version=="system" then
+      return locateindeed(name)
+    else
+      return locate(required,version,trace_ffilib,report_ffilib,locateindeed)
+    end
   end
   function ffi.load(name)
     local library=ffilib(name)
@@ -20204,8 +20243,8 @@ end -- of closure
 
 -- used libraries    : l-lua.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua util-lib.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 855737
--- stripped bytes    : 310443
+-- original bytes    : 860167
+-- stripped bytes    : 313517
 
 -- end library merge
 
diff --git a/scripts/context/stubs/unix/mtxrun b/scripts/context/stubs/unix/mtxrun
index 0c3355fcc..6aae96c4f 100644
--- a/scripts/context/stubs/unix/mtxrun
+++ b/scripts/context/stubs/unix/mtxrun
@@ -2675,7 +2675,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-io"] = package.loaded["l-io"] or true
 
--- original size: 10421, stripped down to: 7499
+-- original size: 12255, stripped down to: 7256
 
 if not modules then modules={} end modules ['l-io']={
   version=1.001,
@@ -2695,44 +2695,30 @@ if string.find(os.getenv("PATH"),";",1,true) then
 else
   io.fileseparator,io.pathseparator="/",":"
 end
-local function readall(f)
-  return f:read("*all")
-end
+local large=2^24    
+local medium=large/16 
+local small=medium/8
 local function readall(f)
   local size=f:seek("end")
-  if size==0 then
-    return ""
-  end
-  f:seek("set",0)
-  if size<1024*1024 then
-    return f:read('*all')
+  if size>0 then
+    f:seek("set",0)
+    return f:read(size)
   else
-    local step
-    if size>16*1024*1024 then
-      step=16*1024*1024
-    else
-      step=floor(size/(1024*1024))*1024*1024/8
-    end
-    local data={}
-    while true do
-      local r=f:read(step)
-      if not r then
-        return concat(data)
-      else
-        data[#data+1]=r
-      end
-    end
+    return ""
   end
 end
 io.readall=readall
 function io.loaddata(filename,textmode) 
   local f=open(filename,(textmode and 'r') or 'rb')
   if f then
-    local data=readall(f)
-    f:close()
-    if #data>0 then
-      return data
+    local size=f:seek("end")
+    local data=nil
+    if size>0 then
+      f:seek("set",0)
+      data=f:read(size)
     end
+    f:close()
+    return data
   end
 end
 function io.copydata(source,target,action)
@@ -2741,37 +2727,14 @@ function io.copydata(source,target,action)
     local g=open(target,"wb")
     if g then
       local size=f:seek("end")
-      if size==0 then
-      else
+      if size>0 then
         f:seek("set",0)
-        if size<1024*1024 then
-          local data=f:read('*all')
-          if action then
-            data=action(data)
-          end
-          if data then
-            g:write(data)
-          end
-        else
-          local step
-          if size>16*1024*1024 then
-            step=16*1024*1024
-          else
-            step=floor(size/(1024*1024))*1024*1024/8
-          end
-          while true do
-            local data=f:read(step)
-            if data then
-              if action then
-                data=action(data)
-              end
-              if data then
-                g:write(data)
-              end
-            else
-              break
-            end
-          end
+        local data=f:read(size)
+        if action then
+          data=action(data)
+        end
+        if data then
+          g:write(data)
         end
       end
       g:close()
@@ -2797,29 +2760,59 @@ function io.savedata(filename,data,joiner)
     return false
   end
 end
-function io.loadlines(filename,n) 
-  local f=open(filename,'r')
-  if not f then
-  elseif n then
-    local lines={}
-    for i=1,n do
-      local line=f:read("*lines")
-      if line then
-        lines[#lines+1]=line
-      else
-        break
+if fio.readline then
+  local readline=fio.readline
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=readline(f)
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=readline(f)
+      f:close()
+      if line and #line>0 then
+        return line
       end
     end
-    f:close()
-    lines=concat(lines,"\n")
-    if #lines>0 then
-      return lines
-    end
-  else
-    local line=f:read("*line") or ""
-    f:close()
-    if #line>0 then
-      return line
+  end
+else
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=f:read("*lines")
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=f:read("*line") or ""
+      f:close()
+      if #line>0 then
+        return line
+      end
     end
   end
 end
@@ -2980,7 +2973,7 @@ function io.ask(question,default,options)
     end
   end
 end
-local function readnumber(f,n,m)
+local function readnumber(f,n,m) 
   if m then
     f:seek("set",n)
     n=m
@@ -2989,31 +2982,31 @@ local function readnumber(f,n,m)
     return byte(f:read(1))
   elseif n==2 then
     local a,b=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==3 then
     local a,b,c=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==4 then
     local a,b,c,d=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==8 then
     local a,b=readnumber(f,4),readnumber(f,4)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==12 then
     local a,b,c=readnumber(f,4),readnumber(f,4),readnumber(f,4)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-2 then
     local b,a=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==-3 then
     local c,b,a=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-4 then
     local d,c,b,a=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==-8 then
     local h,g,f,e,d,c,b,a=byte(f:read(8),1,8)
-    return 256*256*256*256*256*256*256*a+256*256*256*256*256*256*b+256*256*256*256*256*c+256*256*256*256*d+256*256*256*e+256*256*f+256*g+h
+    return 0x100000000000000*a+0x1000000000000*b+0x10000000000*c+0x100000000*d+0x1000000*e+0x10000*f+0x100*g+h
   else
     return 0
   end
@@ -3274,7 +3267,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-os"] = package.loaded["l-os"] or true
 
--- original size: 16520, stripped down to: 9519
+-- original size: 16834, stripped down to: 9513
 
 if not modules then modules={} end modules ['l-os']={
   version=1.001,
@@ -3610,7 +3603,7 @@ if not os.sleep then
   end
 end
 local function isleapyear(year)
-  return (year%400==0) or ((year%100~=0) and (year%4==0))
+  return (year%4==0) and (year%100~=0 or year%400==0)
 end
 os.isleapyear=isleapyear
 local days={ 31,28,31,30,31,30,31,31,30,31,30,31 }
@@ -7042,7 +7035,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-fil"] = package.loaded["util-fil"] or true
 
--- original size: 6362, stripped down to: 4907
+-- original size: 7597, stripped down to: 5761
 
 if not modules then modules={} end modules ['util-fil']={
   version=1.001,
@@ -7111,6 +7104,10 @@ end
 function files.readbytes(f,n)
   return byte(f:read(n),1,n)
 end
+function files.readbytetable(f,n)
+  local s=f:read(n or 1)
+  return { byte(s,1,#s) } 
+end
 function files.readchar(f)
   return f:read(1)
 end
@@ -7199,21 +7196,12 @@ function files.readcardinal4le(f)
 end
 function files.readinteger4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x1000000*a+0x10000*b+0x100*c+d
-  if n>=0x8000000 then
-    return n-0x100000000
+  if a>=0x80 then
+    return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
   else
-    return n
+    return 0x1000000*a+0x10000*b+0x100*c+d
   end
 end
-  function files.readinteger4(f)
-    local a,b,c,d=byte(f:read(4),1,4)
-    if a>=0x80 then
-      return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
-    else
-      return 0x1000000*a+0x10000*b+0x100*c+d
-    end
-  end
 function files.readinteger4le(f)
   local d,c,b,a=byte(f:read(4),1,4)
   local n=0x1000000*a+0x10000*b+0x100*c+d
@@ -7225,11 +7213,10 @@ function files.readinteger4le(f)
 end
 function files.readfixed4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x100*a+b
-  if n>=0x8000 then
-    return n-0x10000+(0x100*c+d)/0xFFFF
+  if a>=0x80 then
+    return (0x1000000*a+0x10000*b+0x100*c+d-0x100000000)/65536.0
   else
-    return n+(0x100*c+d)/0xFFFF
+    return (0x1000000*a+0x10000*b+0x100*c+d)/65536.0
   end
 end
 if extract then
@@ -7274,6 +7261,34 @@ end
 function files.writebyte(f,b)
   f:write(char(b))
 end
+if fio and fio.readcardinal1 then
+  files.readcardinal1=fio.readcardinal1
+  files.readcardinal2=fio.readcardinal2
+  files.readcardinal3=fio.readcardinal3
+  files.readcardinal4=fio.readcardinal4
+  files.readinteger1=fio.readinteger1
+  files.readinteger2=fio.readinteger2
+  files.readinteger3=fio.readinteger3
+  files.readinteger4=fio.readinteger4
+  files.readfixed4=fio.readfixed4
+  files.read2dot14=fio.read2dot14
+  files.setposition=fio.setposition
+  files.getposition=fio.getposition
+  files.readbyte=files.readcardinel1
+  files.readsignedbyte=files.readinteger1
+  files.readcardinal=files.readcardinal1
+  files.readinteger=files.readinteger1
+  local skipposition=fio.skipposition
+  files.skipposition=skipposition
+  files.readbytes=fio.readbytes
+  files.readbytetable=fio.readbytetable
+  function files.skipshort(f,n)
+    skipposition(f,2*(n or 1))
+  end
+  function files.skiplong(f,n)
+    skipposition(f,4*(n or 1))
+  end
+end
 
 
 end -- of closure
@@ -7282,7 +7297,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-sac"] = package.loaded["util-sac"] or true
 
--- original size: 4360, stripped down to: 3409
+-- original size: 4634, stripped down to: 3514
 
 if not modules then modules={} end modules ['util-sac']={
   version=1.001,
@@ -7350,6 +7365,12 @@ function streams.readbytes(f,n)
   f[2]=j
   return byte(f[1],i,j-1)
 end
+function streams.readbytetable(f,n)
+  local i=f[2]
+  local j=i+n
+  f[2]=j
+  return { byte(f[1],i,j-1) }
+end
 function streams.skipbytes(f,n)
   f[2]=f[2]+n
 end
@@ -7369,7 +7390,7 @@ function streams.readinteger1(f)
   f[2]=i+1
   local n=byte(f[1],i)
   if n>=0x80 then
-    return n-0xFF-1
+    return n-0x100
   else
     return n
   end
@@ -7391,7 +7412,7 @@ function streams.readinteger2(f)
   local a,b=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1
+    return n-0x10000
   else
     return n
   end
@@ -7417,7 +7438,7 @@ function streams.readinteger4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x1000000*a+0x10000*b+0x100*c+d
   if n>=0x8000000 then
-    return n-0xFFFFFFFF-1
+    return n-0x100000000
   else
     return n
   end
@@ -7429,7 +7450,7 @@ function streams.readfixed4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1+(0x100*c+d)/0xFFFF
+    return n-0x10000+(0x100*c+d)/0xFFFF
   else
     return n+(0x100*c+d)/0xFFFF
   end
@@ -9826,7 +9847,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-deb"] = package.loaded["util-deb"] or true
 
--- original size: 8473, stripped down to: 6211
+-- original size: 9211, stripped down to: 6727
 
 if not modules then modules={} end modules ['util-deb']={
   version=1.001,
@@ -9837,9 +9858,10 @@ if not modules then modules={} end modules ['util-deb']={
 }
 local debug=require "debug"
 local getinfo,sethook=debug.getinfo,debug.sethook
-local type,next,tostring=type,next,tostring
+local type,next,tostring,tonumber=type,next,tostring,tonumber
 local format,find,sub,gsub=string.format,string.find,string.sub,string.gsub
 local insert,remove,sort=table.insert,table.remove,table.sort
+local setmetatableindex=table.setmetatableindex
 utilities=utilities or {}
 local debugger=utilities.debugger or {}
 utilities.debugger=debugger
@@ -9850,55 +9872,62 @@ local overhead=0
 local dummycalls=10*1000
 local nesting=0
 local names={}
-local function initialize()
-  if FFISUPPORTED and ffi then
-    if os.type=="windows" then
-      local okay,kernel=pcall(ffi.load,"kernel32")
-      if kernel then
-        local tonumber=ffi.number or tonumber
-ffi.cdef[[
-int QueryPerformanceFrequency(int64_t *lpFrequency);
-int QueryPerformanceCounter(int64_t *lpPerformanceCount);
-]]
-        local target=ffi.new("__int64[1]")
-        ticks=function()
-          if kernel.QueryPerformanceCounter(target)==1 then
-            return tonumber(target[0])
-          else
-            return 0
-          end
-        end
-        local target=ffi.new("__int64[1]")
-        seconds=function(ticks)
-          if kernel.QueryPerformanceFrequency(target)==1 then
-            return ticks/tonumber(target[0])
-          else
-            return 0
-          end
-        end
-      end
-    elseif os.type=="unix" then
-      local C=ffi.C
+local initialize=false
+if not (FFISUPPORTED and ffi) then
+elseif os.type=="windows" then
+  initialize=function()
+    local kernel=ffilib("kernel32","system") 
+    if kernel then
       local tonumber=ffi.number or tonumber
-ffi.cdef [[
-struct timespec { long sec; long nsec; };
-int clock_gettime(int timerid, struct timespec *t);
-   ]]
-      local target=ffi.new("timespec[?]",1)
-      function ticks()
-        C.clock_gettime(2,target)
-        return tonumber(target[0].sec*1000000000+target[0].nsec)
+      ffi.cdef[[
+                int QueryPerformanceFrequency(int64_t *lpFrequency);
+                int QueryPerformanceCounter(int64_t *lpPerformanceCount);
+            ]]
+      local target=ffi.new("__int64[1]")
+      ticks=function()
+        if kernel.QueryPerformanceCounter(target)==1 then
+          return tonumber(target[0])
+        else
+          return 0
+        end
       end
+      local target=ffi.new("__int64[1]")
       seconds=function(ticks)
-        return ticks/1000000000
+        if kernel.QueryPerformanceFrequency(target)==1 then
+          return ticks/tonumber(target[0])
+        else
+          return 0
+        end
       end
     end
+    initialize=false
   end
-  initialize=false
-end
-table.setmetatableindex(names,function(t,name)
-  local v=table.setmetatableindex(function(t,source)
-    local v=table.setmetatableindex(function(t,line)
+elseif os.type=="unix" then
+  initialize=function()
+    local C=ffi.C
+    local tonumber=ffi.number or tonumber
+    ffi.cdef [[
+            /* what a mess */
+            typedef int clk_id_t;
+            typedef enum { CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_PROCESS_CPUTIME_ID } clk_id;
+            typedef struct timespec { long sec; long nsec; } ctx_timespec;
+            int clock_gettime(clk_id_t timerid, struct timespec *t);
+        ]]
+    local target=ffi.new("ctx_timespec[?]",1)
+    local clock=C.CLOCK_PROCESS_CPUTIME_ID
+    ticks=function ()
+      C.clock_gettime(clock,target)
+      return tonumber(target[0].sec*1000000000+target[0].nsec)
+    end
+    seconds=function(ticks)
+      return ticks/1000000000
+    end
+    initialize=false
+  end
+end
+setmetatableindex(names,function(t,name)
+  local v=setmetatableindex(function(t,source)
+    local v=setmetatableindex(function(t,line)
       local v={ total=0,count=0 }
       t[line]=v
       return v
@@ -9938,33 +9967,36 @@ local function hook(where)
     end
   end
 end
-function debugger.showstats(printer)
+function debugger.showstats(printer,threshold)
   local printer=printer or report
   local calls=0
   local functions=0
   local dataset={}
   local length=0
   local wholetime=0
+  local threshold=threshold or 0
   for name,sources in next,names do
     for source,lines in next,sources do
       for line,data in next,lines do
-        if #name>length then
-          length=#name
-        end
-        local total=data.total
         local count=data.count
-        local real=total
-        if real>0 then
-          real=total-(count*overhead/dummycalls)
-          if real<0 then
-            real=0
+        if count>threshold then
+          if #name>length then
+            length=#name
           end
-          wholetime=wholetime+real
-        end
-        if line<0 then
-          line=0
+          local total=data.total
+          local real=total
+          if real>0 then
+            real=total-(count*overhead/dummycalls)
+            if real<0 then
+              real=0
+            end
+            wholetime=wholetime+real
+          end
+          if line<0 then
+            line=0
+          end
+          dataset[#dataset+1]={ real,total,count,name,source,line }
         end
-        dataset[#dataset+1]={ real,total,count,name,source,line }
       end
     end
   end
@@ -10017,10 +10049,10 @@ function debugger.showstats(printer)
   printer(format("calls     : %i",calls))
   printer(format("overhead  : %f",seconds(overhead/1000)))
 end
-function debugger.savestats(filename)
+function debugger.savestats(filename,threshold)
   local f=io.open(filename,'w')
   if f then
-    debugger.showstats(function(str) f:write(str,"\n") end)
+    debugger.showstats(function(str) f:write(str,"\n") end,threshold)
     f:close()
   end
 end
@@ -11231,7 +11263,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-tab"] = package.loaded["lxml-tab"] or true
 
--- original size: 58068, stripped down to: 36652
+-- original size: 58012, stripped down to: 36637
 
 if not modules then modules={} end modules ['lxml-tab']={
   version=1.001,
@@ -11373,7 +11405,7 @@ local function add_empty(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=top
   }
   dt[nt]=t
@@ -11395,7 +11427,7 @@ local function add_begin(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=stack[level]
   }
   setmetatable(top,mt)
@@ -11422,7 +11454,6 @@ local function add_end(spacing,namespace,tag)
   end
   dt=top.dt
   nt=#dt+1
-  toclose.ni=nt
   dt[nt]=toclose
   if toclose.at.xmlns then
     remove(xmlns)
@@ -11472,7 +11503,7 @@ local function add_special(what,spacing,text)
       special=true,
       ns="",
       tg=what,
-      ni=nt,
+      ni=nil,
       dt={ text },
     }
   end
@@ -12589,7 +12620,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-lpt"] = package.loaded["lxml-lpt"] or true
 
--- original size: 54930, stripped down to: 33354
+-- original size: 54921, stripped down to: 33410
 
 if not modules then modules={} end modules ['lxml-lpt']={
   version=1.001,
@@ -12680,6 +12711,7 @@ apply_axis['child']=function(list)
         if dk.tg then
           c=c+1
           collected[c]=dk
+          dk.ni=k 
           en=en+1
           dk.ei=en
         end
@@ -12698,6 +12730,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -12723,6 +12756,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -19624,7 +19658,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-lib"] = package.loaded["util-lib"] or true
 
--- original size: 13648, stripped down to: 7455
+-- original size: 13748, stripped down to: 7544
 
 if not modules then modules={} end modules ['util-lib']={
   version=1.001,
@@ -19841,15 +19875,20 @@ if FFISUPPORTED and ffi and ffi.load then
   local trace_ffilib=false
   local savedffiload=ffi.load
   trackers.register("resolvers.ffilib",function(v) trace_ffilib=v end)
+  local function locateindeed(name)
+    local message,library=pcall(savedffiload,removesuffix(name))
+    if type(library)=="userdata" then
+      return library
+    else
+      return false
+    end
+  end
   function ffilib(required,version)
-    return locate(required,version,trace_ffilib,report_ffilib,function(name)
-      local message,library=pcall(savedffiload,removesuffix(name))
-      if type(library)=="userdata" then
-        return message,library
-      else
-        return message,false
-      end
-    end)
+    if version=="system" then
+      return locateindeed(name)
+    else
+      return locate(required,version,trace_ffilib,report_ffilib,locateindeed)
+    end
   end
   function ffi.load(name)
     local library=ffilib(name)
@@ -20204,8 +20243,8 @@ end -- of closure
 
 -- used libraries    : l-lua.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua util-lib.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 855737
--- stripped bytes    : 310443
+-- original bytes    : 860167
+-- stripped bytes    : 313517
 
 -- end library merge
 
diff --git a/scripts/context/stubs/win64/mtxrun.lua b/scripts/context/stubs/win64/mtxrun.lua
index 0c3355fcc..6aae96c4f 100644
--- a/scripts/context/stubs/win64/mtxrun.lua
+++ b/scripts/context/stubs/win64/mtxrun.lua
@@ -2675,7 +2675,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-io"] = package.loaded["l-io"] or true
 
--- original size: 10421, stripped down to: 7499
+-- original size: 12255, stripped down to: 7256
 
 if not modules then modules={} end modules ['l-io']={
   version=1.001,
@@ -2695,44 +2695,30 @@ if string.find(os.getenv("PATH"),";",1,true) then
 else
   io.fileseparator,io.pathseparator="/",":"
 end
-local function readall(f)
-  return f:read("*all")
-end
+local large=2^24    
+local medium=large/16 
+local small=medium/8
 local function readall(f)
   local size=f:seek("end")
-  if size==0 then
-    return ""
-  end
-  f:seek("set",0)
-  if size<1024*1024 then
-    return f:read('*all')
+  if size>0 then
+    f:seek("set",0)
+    return f:read(size)
   else
-    local step
-    if size>16*1024*1024 then
-      step=16*1024*1024
-    else
-      step=floor(size/(1024*1024))*1024*1024/8
-    end
-    local data={}
-    while true do
-      local r=f:read(step)
-      if not r then
-        return concat(data)
-      else
-        data[#data+1]=r
-      end
-    end
+    return ""
   end
 end
 io.readall=readall
 function io.loaddata(filename,textmode) 
   local f=open(filename,(textmode and 'r') or 'rb')
   if f then
-    local data=readall(f)
-    f:close()
-    if #data>0 then
-      return data
+    local size=f:seek("end")
+    local data=nil
+    if size>0 then
+      f:seek("set",0)
+      data=f:read(size)
     end
+    f:close()
+    return data
   end
 end
 function io.copydata(source,target,action)
@@ -2741,37 +2727,14 @@ function io.copydata(source,target,action)
     local g=open(target,"wb")
     if g then
       local size=f:seek("end")
-      if size==0 then
-      else
+      if size>0 then
         f:seek("set",0)
-        if size<1024*1024 then
-          local data=f:read('*all')
-          if action then
-            data=action(data)
-          end
-          if data then
-            g:write(data)
-          end
-        else
-          local step
-          if size>16*1024*1024 then
-            step=16*1024*1024
-          else
-            step=floor(size/(1024*1024))*1024*1024/8
-          end
-          while true do
-            local data=f:read(step)
-            if data then
-              if action then
-                data=action(data)
-              end
-              if data then
-                g:write(data)
-              end
-            else
-              break
-            end
-          end
+        local data=f:read(size)
+        if action then
+          data=action(data)
+        end
+        if data then
+          g:write(data)
         end
       end
       g:close()
@@ -2797,29 +2760,59 @@ function io.savedata(filename,data,joiner)
     return false
   end
 end
-function io.loadlines(filename,n) 
-  local f=open(filename,'r')
-  if not f then
-  elseif n then
-    local lines={}
-    for i=1,n do
-      local line=f:read("*lines")
-      if line then
-        lines[#lines+1]=line
-      else
-        break
+if fio.readline then
+  local readline=fio.readline
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=readline(f)
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=readline(f)
+      f:close()
+      if line and #line>0 then
+        return line
       end
     end
-    f:close()
-    lines=concat(lines,"\n")
-    if #lines>0 then
-      return lines
-    end
-  else
-    local line=f:read("*line") or ""
-    f:close()
-    if #line>0 then
-      return line
+  end
+else
+  function io.loadlines(filename,n) 
+    local f=open(filename,'r')
+    if not f then
+    elseif n then
+      local lines={}
+      for i=1,n do
+        local line=f:read("*lines")
+        if line then
+          lines[i]=line
+        else
+          break
+        end
+      end
+      f:close()
+      lines=concat(lines,"\n")
+      if #lines>0 then
+        return lines
+      end
+    else
+      local line=f:read("*line") or ""
+      f:close()
+      if #line>0 then
+        return line
+      end
     end
   end
 end
@@ -2980,7 +2973,7 @@ function io.ask(question,default,options)
     end
   end
 end
-local function readnumber(f,n,m)
+local function readnumber(f,n,m) 
   if m then
     f:seek("set",n)
     n=m
@@ -2989,31 +2982,31 @@ local function readnumber(f,n,m)
     return byte(f:read(1))
   elseif n==2 then
     local a,b=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==3 then
     local a,b,c=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==4 then
     local a,b,c,d=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==8 then
     local a,b=readnumber(f,4),readnumber(f,4)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==12 then
     local a,b,c=readnumber(f,4),readnumber(f,4),readnumber(f,4)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-2 then
     local b,a=byte(f:read(2),1,2)
-    return 256*a+b
+    return 0x100*a+b
   elseif n==-3 then
     local c,b,a=byte(f:read(3),1,3)
-    return 256*256*a+256*b+c
+    return 0x10000*a+0x100*b+c
   elseif n==-4 then
     local d,c,b,a=byte(f:read(4),1,4)
-    return 256*256*256*a+256*256*b+256*c+d
+    return 0x1000000*a+0x10000*b+0x100*c+d
   elseif n==-8 then
     local h,g,f,e,d,c,b,a=byte(f:read(8),1,8)
-    return 256*256*256*256*256*256*256*a+256*256*256*256*256*256*b+256*256*256*256*256*c+256*256*256*256*d+256*256*256*e+256*256*f+256*g+h
+    return 0x100000000000000*a+0x1000000000000*b+0x10000000000*c+0x100000000*d+0x1000000*e+0x10000*f+0x100*g+h
   else
     return 0
   end
@@ -3274,7 +3267,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["l-os"] = package.loaded["l-os"] or true
 
--- original size: 16520, stripped down to: 9519
+-- original size: 16834, stripped down to: 9513
 
 if not modules then modules={} end modules ['l-os']={
   version=1.001,
@@ -3610,7 +3603,7 @@ if not os.sleep then
   end
 end
 local function isleapyear(year)
-  return (year%400==0) or ((year%100~=0) and (year%4==0))
+  return (year%4==0) and (year%100~=0 or year%400==0)
 end
 os.isleapyear=isleapyear
 local days={ 31,28,31,30,31,30,31,31,30,31,30,31 }
@@ -7042,7 +7035,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-fil"] = package.loaded["util-fil"] or true
 
--- original size: 6362, stripped down to: 4907
+-- original size: 7597, stripped down to: 5761
 
 if not modules then modules={} end modules ['util-fil']={
   version=1.001,
@@ -7111,6 +7104,10 @@ end
 function files.readbytes(f,n)
   return byte(f:read(n),1,n)
 end
+function files.readbytetable(f,n)
+  local s=f:read(n or 1)
+  return { byte(s,1,#s) } 
+end
 function files.readchar(f)
   return f:read(1)
 end
@@ -7199,21 +7196,12 @@ function files.readcardinal4le(f)
 end
 function files.readinteger4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x1000000*a+0x10000*b+0x100*c+d
-  if n>=0x8000000 then
-    return n-0x100000000
+  if a>=0x80 then
+    return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
   else
-    return n
+    return 0x1000000*a+0x10000*b+0x100*c+d
   end
 end
-  function files.readinteger4(f)
-    local a,b,c,d=byte(f:read(4),1,4)
-    if a>=0x80 then
-      return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
-    else
-      return 0x1000000*a+0x10000*b+0x100*c+d
-    end
-  end
 function files.readinteger4le(f)
   local d,c,b,a=byte(f:read(4),1,4)
   local n=0x1000000*a+0x10000*b+0x100*c+d
@@ -7225,11 +7213,10 @@ function files.readinteger4le(f)
 end
 function files.readfixed4(f)
   local a,b,c,d=byte(f:read(4),1,4)
-  local n=0x100*a+b
-  if n>=0x8000 then
-    return n-0x10000+(0x100*c+d)/0xFFFF
+  if a>=0x80 then
+    return (0x1000000*a+0x10000*b+0x100*c+d-0x100000000)/65536.0
   else
-    return n+(0x100*c+d)/0xFFFF
+    return (0x1000000*a+0x10000*b+0x100*c+d)/65536.0
   end
 end
 if extract then
@@ -7274,6 +7261,34 @@ end
 function files.writebyte(f,b)
   f:write(char(b))
 end
+if fio and fio.readcardinal1 then
+  files.readcardinal1=fio.readcardinal1
+  files.readcardinal2=fio.readcardinal2
+  files.readcardinal3=fio.readcardinal3
+  files.readcardinal4=fio.readcardinal4
+  files.readinteger1=fio.readinteger1
+  files.readinteger2=fio.readinteger2
+  files.readinteger3=fio.readinteger3
+  files.readinteger4=fio.readinteger4
+  files.readfixed4=fio.readfixed4
+  files.read2dot14=fio.read2dot14
+  files.setposition=fio.setposition
+  files.getposition=fio.getposition
+  files.readbyte=files.readcardinel1
+  files.readsignedbyte=files.readinteger1
+  files.readcardinal=files.readcardinal1
+  files.readinteger=files.readinteger1
+  local skipposition=fio.skipposition
+  files.skipposition=skipposition
+  files.readbytes=fio.readbytes
+  files.readbytetable=fio.readbytetable
+  function files.skipshort(f,n)
+    skipposition(f,2*(n or 1))
+  end
+  function files.skiplong(f,n)
+    skipposition(f,4*(n or 1))
+  end
+end
 
 
 end -- of closure
@@ -7282,7 +7297,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-sac"] = package.loaded["util-sac"] or true
 
--- original size: 4360, stripped down to: 3409
+-- original size: 4634, stripped down to: 3514
 
 if not modules then modules={} end modules ['util-sac']={
   version=1.001,
@@ -7350,6 +7365,12 @@ function streams.readbytes(f,n)
   f[2]=j
   return byte(f[1],i,j-1)
 end
+function streams.readbytetable(f,n)
+  local i=f[2]
+  local j=i+n
+  f[2]=j
+  return { byte(f[1],i,j-1) }
+end
 function streams.skipbytes(f,n)
   f[2]=f[2]+n
 end
@@ -7369,7 +7390,7 @@ function streams.readinteger1(f)
   f[2]=i+1
   local n=byte(f[1],i)
   if n>=0x80 then
-    return n-0xFF-1
+    return n-0x100
   else
     return n
   end
@@ -7391,7 +7412,7 @@ function streams.readinteger2(f)
   local a,b=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1
+    return n-0x10000
   else
     return n
   end
@@ -7417,7 +7438,7 @@ function streams.readinteger4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x1000000*a+0x10000*b+0x100*c+d
   if n>=0x8000000 then
-    return n-0xFFFFFFFF-1
+    return n-0x100000000
   else
     return n
   end
@@ -7429,7 +7450,7 @@ function streams.readfixed4(f)
   local a,b,c,d=byte(f[1],i,j)
   local n=0x100*a+b
   if n>=0x8000 then
-    return n-0xFFFF-1+(0x100*c+d)/0xFFFF
+    return n-0x10000+(0x100*c+d)/0xFFFF
   else
     return n+(0x100*c+d)/0xFFFF
   end
@@ -9826,7 +9847,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-deb"] = package.loaded["util-deb"] or true
 
--- original size: 8473, stripped down to: 6211
+-- original size: 9211, stripped down to: 6727
 
 if not modules then modules={} end modules ['util-deb']={
   version=1.001,
@@ -9837,9 +9858,10 @@ if not modules then modules={} end modules ['util-deb']={
 }
 local debug=require "debug"
 local getinfo,sethook=debug.getinfo,debug.sethook
-local type,next,tostring=type,next,tostring
+local type,next,tostring,tonumber=type,next,tostring,tonumber
 local format,find,sub,gsub=string.format,string.find,string.sub,string.gsub
 local insert,remove,sort=table.insert,table.remove,table.sort
+local setmetatableindex=table.setmetatableindex
 utilities=utilities or {}
 local debugger=utilities.debugger or {}
 utilities.debugger=debugger
@@ -9850,55 +9872,62 @@ local overhead=0
 local dummycalls=10*1000
 local nesting=0
 local names={}
-local function initialize()
-  if FFISUPPORTED and ffi then
-    if os.type=="windows" then
-      local okay,kernel=pcall(ffi.load,"kernel32")
-      if kernel then
-        local tonumber=ffi.number or tonumber
-ffi.cdef[[
-int QueryPerformanceFrequency(int64_t *lpFrequency);
-int QueryPerformanceCounter(int64_t *lpPerformanceCount);
-]]
-        local target=ffi.new("__int64[1]")
-        ticks=function()
-          if kernel.QueryPerformanceCounter(target)==1 then
-            return tonumber(target[0])
-          else
-            return 0
-          end
-        end
-        local target=ffi.new("__int64[1]")
-        seconds=function(ticks)
-          if kernel.QueryPerformanceFrequency(target)==1 then
-            return ticks/tonumber(target[0])
-          else
-            return 0
-          end
-        end
-      end
-    elseif os.type=="unix" then
-      local C=ffi.C
+local initialize=false
+if not (FFISUPPORTED and ffi) then
+elseif os.type=="windows" then
+  initialize=function()
+    local kernel=ffilib("kernel32","system") 
+    if kernel then
       local tonumber=ffi.number or tonumber
-ffi.cdef [[
-struct timespec { long sec; long nsec; };
-int clock_gettime(int timerid, struct timespec *t);
-   ]]
-      local target=ffi.new("timespec[?]",1)
-      function ticks()
-        C.clock_gettime(2,target)
-        return tonumber(target[0].sec*1000000000+target[0].nsec)
+      ffi.cdef[[
+                int QueryPerformanceFrequency(int64_t *lpFrequency);
+                int QueryPerformanceCounter(int64_t *lpPerformanceCount);
+            ]]
+      local target=ffi.new("__int64[1]")
+      ticks=function()
+        if kernel.QueryPerformanceCounter(target)==1 then
+          return tonumber(target[0])
+        else
+          return 0
+        end
       end
+      local target=ffi.new("__int64[1]")
       seconds=function(ticks)
-        return ticks/1000000000
+        if kernel.QueryPerformanceFrequency(target)==1 then
+          return ticks/tonumber(target[0])
+        else
+          return 0
+        end
       end
     end
+    initialize=false
   end
-  initialize=false
-end
-table.setmetatableindex(names,function(t,name)
-  local v=table.setmetatableindex(function(t,source)
-    local v=table.setmetatableindex(function(t,line)
+elseif os.type=="unix" then
+  initialize=function()
+    local C=ffi.C
+    local tonumber=ffi.number or tonumber
+    ffi.cdef [[
+            /* what a mess */
+            typedef int clk_id_t;
+            typedef enum { CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_PROCESS_CPUTIME_ID } clk_id;
+            typedef struct timespec { long sec; long nsec; } ctx_timespec;
+            int clock_gettime(clk_id_t timerid, struct timespec *t);
+        ]]
+    local target=ffi.new("ctx_timespec[?]",1)
+    local clock=C.CLOCK_PROCESS_CPUTIME_ID
+    ticks=function ()
+      C.clock_gettime(clock,target)
+      return tonumber(target[0].sec*1000000000+target[0].nsec)
+    end
+    seconds=function(ticks)
+      return ticks/1000000000
+    end
+    initialize=false
+  end
+end
+setmetatableindex(names,function(t,name)
+  local v=setmetatableindex(function(t,source)
+    local v=setmetatableindex(function(t,line)
       local v={ total=0,count=0 }
       t[line]=v
       return v
@@ -9938,33 +9967,36 @@ local function hook(where)
     end
   end
 end
-function debugger.showstats(printer)
+function debugger.showstats(printer,threshold)
   local printer=printer or report
   local calls=0
   local functions=0
   local dataset={}
   local length=0
   local wholetime=0
+  local threshold=threshold or 0
   for name,sources in next,names do
     for source,lines in next,sources do
       for line,data in next,lines do
-        if #name>length then
-          length=#name
-        end
-        local total=data.total
         local count=data.count
-        local real=total
-        if real>0 then
-          real=total-(count*overhead/dummycalls)
-          if real<0 then
-            real=0
+        if count>threshold then
+          if #name>length then
+            length=#name
           end
-          wholetime=wholetime+real
-        end
-        if line<0 then
-          line=0
+          local total=data.total
+          local real=total
+          if real>0 then
+            real=total-(count*overhead/dummycalls)
+            if real<0 then
+              real=0
+            end
+            wholetime=wholetime+real
+          end
+          if line<0 then
+            line=0
+          end
+          dataset[#dataset+1]={ real,total,count,name,source,line }
         end
-        dataset[#dataset+1]={ real,total,count,name,source,line }
       end
     end
   end
@@ -10017,10 +10049,10 @@ function debugger.showstats(printer)
   printer(format("calls     : %i",calls))
   printer(format("overhead  : %f",seconds(overhead/1000)))
 end
-function debugger.savestats(filename)
+function debugger.savestats(filename,threshold)
   local f=io.open(filename,'w')
   if f then
-    debugger.showstats(function(str) f:write(str,"\n") end)
+    debugger.showstats(function(str) f:write(str,"\n") end,threshold)
     f:close()
   end
 end
@@ -11231,7 +11263,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-tab"] = package.loaded["lxml-tab"] or true
 
--- original size: 58068, stripped down to: 36652
+-- original size: 58012, stripped down to: 36637
 
 if not modules then modules={} end modules ['lxml-tab']={
   version=1.001,
@@ -11373,7 +11405,7 @@ local function add_empty(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=top
   }
   dt[nt]=t
@@ -11395,7 +11427,7 @@ local function add_begin(spacing,namespace,tag)
     tg=tag,
     at=at,
     dt={},
-    ni=nt,
+    ni=nil,
     __p__=stack[level]
   }
   setmetatable(top,mt)
@@ -11422,7 +11454,6 @@ local function add_end(spacing,namespace,tag)
   end
   dt=top.dt
   nt=#dt+1
-  toclose.ni=nt
   dt[nt]=toclose
   if toclose.at.xmlns then
     remove(xmlns)
@@ -11472,7 +11503,7 @@ local function add_special(what,spacing,text)
       special=true,
       ns="",
       tg=what,
-      ni=nt,
+      ni=nil,
       dt={ text },
     }
   end
@@ -12589,7 +12620,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["lxml-lpt"] = package.loaded["lxml-lpt"] or true
 
--- original size: 54930, stripped down to: 33354
+-- original size: 54921, stripped down to: 33410
 
 if not modules then modules={} end modules ['lxml-lpt']={
   version=1.001,
@@ -12680,6 +12711,7 @@ apply_axis['child']=function(list)
         if dk.tg then
           c=c+1
           collected[c]=dk
+          dk.ni=k 
           en=en+1
           dk.ei=en
         end
@@ -12698,6 +12730,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -12723,6 +12756,7 @@ local function collect(list,collected,c)
       if dk.tg then
         c=c+1
         collected[c]=dk
+        dk.ni=k 
         en=en+1
         dk.ei=en
         c=collect(dk,collected,c)
@@ -19624,7 +19658,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-lib"] = package.loaded["util-lib"] or true
 
--- original size: 13648, stripped down to: 7455
+-- original size: 13748, stripped down to: 7544
 
 if not modules then modules={} end modules ['util-lib']={
   version=1.001,
@@ -19841,15 +19875,20 @@ if FFISUPPORTED and ffi and ffi.load then
   local trace_ffilib=false
   local savedffiload=ffi.load
   trackers.register("resolvers.ffilib",function(v) trace_ffilib=v end)
+  local function locateindeed(name)
+    local message,library=pcall(savedffiload,removesuffix(name))
+    if type(library)=="userdata" then
+      return library
+    else
+      return false
+    end
+  end
   function ffilib(required,version)
-    return locate(required,version,trace_ffilib,report_ffilib,function(name)
-      local message,library=pcall(savedffiload,removesuffix(name))
-      if type(library)=="userdata" then
-        return message,library
-      else
-        return message,false
-      end
-    end)
+    if version=="system" then
+      return locateindeed(name)
+    else
+      return locate(required,version,trace_ffilib,report_ffilib,locateindeed)
+    end
   end
   function ffi.load(name)
     local library=ffilib(name)
@@ -20204,8 +20243,8 @@ end -- of closure
 
 -- used libraries    : l-lua.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua util-lib.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 855737
--- stripped bytes    : 310443
+-- original bytes    : 860167
+-- stripped bytes    : 313517
 
 -- end library merge