2017-02-18 11:52:00

13 files changed, 28 insertions, 118 deletions

diff --git a/tex/context/base/mkii/cont-new.mkii b/tex/context/base/mkii/cont-new.mkii
index 360538e07..e3b49959a 100644
--- a/tex/context/base/mkii/cont-new.mkii
+++ b/tex/context/base/mkii/cont-new.mkii
@@ -11,7 +11,7 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
-\newcontextversion{2017.02.17 13:41}
+\newcontextversion{2017.02.18 11:47}
 
 %D This file is loaded at runtime, thereby providing an
 %D excellent place for hacks, patches, extensions and new
diff --git a/tex/context/base/mkii/context.mkii b/tex/context/base/mkii/context.mkii
index 48aec809e..c505ce092 100644
--- a/tex/context/base/mkii/context.mkii
+++ b/tex/context/base/mkii/context.mkii
@@ -20,7 +20,7 @@
 %D your styles an modules.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2017.02.17 13:41}
+\edef\contextversion{2017.02.18 11:47}
 
 %D For those who want to use this:
 
diff --git a/tex/context/base/mkiv/cont-new.mkiv b/tex/context/base/mkiv/cont-new.mkiv
index dbbb8154a..5f849dd69 100644
--- a/tex/context/base/mkiv/cont-new.mkiv
+++ b/tex/context/base/mkiv/cont-new.mkiv
@@ -11,7 +11,7 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
-\newcontextversion{2017.02.17 13:41}
+\newcontextversion{2017.02.18 11:47}
 
 %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/mkiv/context.mkiv b/tex/context/base/mkiv/context.mkiv
index e4bf79f0b..5bda44eea 100644
--- a/tex/context/base/mkiv/context.mkiv
+++ b/tex/context/base/mkiv/context.mkiv
@@ -39,7 +39,7 @@
 %D up and the dependencies are more consistent.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2017.02.17 13:41}
+\edef\contextversion{2017.02.18 11:47}
 \edef\contextkind   {beta}
 
 %D For those who want to use this:
diff --git a/tex/context/base/mkiv/l-lua.lua b/tex/context/base/mkiv/l-lua.lua
index adc2c97a8..88cde6d1e 100644
--- a/tex/context/base/mkiv/l-lua.lua
+++ b/tex/context/base/mkiv/l-lua.lua
@@ -201,83 +201,22 @@ end
 
 -- new
 
-if ffi and ffi.number then
-    -- already loaded
-else
-    local okay
-
-    okay, ffi = pcall(require,"ffi")
-
-    if not ffi then
-        -- an old version
-    elseif ffi.os == "" or ffi.arch == "" then
-        -- no ffi support
-        ffi = nil
-    elseif ffi.number then
-        -- luatex
-    else
-        -- luajittex
-        ffi.number = tonumber
-    end
+FFISUPPORTED = type(ffi) == "table" and ffi.os ~= "" and ffi.arch ~= "" and ffi.load
+
+if not FFISUPPORTED then
+
+    -- Maybe we should check for LUATEXENGINE but that's also a bti tricky as we still
+    -- can have a weird ffi library laying around. Checking for presence of 'jit' is
+    -- also not robust. So for now we hope for the best.
+
+    local okay ; okay, ffi = pcall(require,"ffi")
+
+    FFISUPPORTED = type(ffi) == "table" and ffi.os ~= "" and ffi.arch ~= "" and ffi.load
+
 end
 
--- done differently in context
---
--- if ffi then
---     local load    = ffi.load
---     local select  = select
---     local type    = type
---     local next    = next
---     local sort    = table.sort
---     local gmatch  = string.gmatch
---     local okay    = true
---     local control = { }
---     function ffi.load(name,...)
---         if okay == true or okay[name] then
---             return load(name,...)
---         else
---             return nil
---         end
---     end
---     function control.permit(...)
---         if okay == true then
---             okay = { }
---         end
---         for i=1,select("#",...) do
---             local n = select(i,...)
---             local t = type(n)
---             if t == "table" then
---                 for i=1,#n do
---                     control.permit(n[i])
---                 end
---             elseif t == "string" then
---                 for s in gmatch(n,"[^,%s]+") do
---                     okay[n] = true
---                 end
---             end
---         end
---     end
---     function control.freeze(none)
---         control.permit = function() end
---         control.freeze = function() end
---         if none then
---             okay = { }
---         end
---     end
---     function control.permitted(name)
---         if okay == true then
---             return true
---         elseif type(name) == "string" then
---             return okay[name] or false
---         else
---             -- no helpers yet
---             local t = { }
---             for k, v in next, okay do
---                 t[#t+1] = k
---             end
---             sort(t)
---             return t
---         end
---     end
---     ffi.control = control
--- end
+if not FFISUPPORTED then
+    ffi = nil
+elseif not ffi.number then
+    ffi.number = tonumber
+end
diff --git a/tex/context/base/mkiv/l-sandbox.lua b/tex/context/base/mkiv/l-sandbox.lua
index a95e70395..7a89aa8cd 100644
--- a/tex/context/base/mkiv/l-sandbox.lua
+++ b/tex/context/base/mkiv/l-sandbox.lua
@@ -166,7 +166,9 @@ function require(name)
     local n = gsub(name,"^.*[\\/]","")
     local n = gsub(n,"[%.].*$","")
     local b = blocked[n]
-    if b then
+    if b == false then
+        return nil -- e.g. ffi
+    elseif b then
         if trace then
             report("using blocked: %s",n)
         end
@@ -183,12 +185,7 @@ function blockrequire(name,lib)
     if trace then
         report("preventing reload of: %s",name)
     end
-    blocked[name] = lib or _G[name]
-end
-
-if TEXENGINE == "luajittex" or not ffi then
-    local ok
-    ok, ffi = pcall(require,"ffi")
+    blocked[name] = lib or _G[name] or false
 end
 
 function sandbox.enable()
@@ -242,31 +239,6 @@ function sandbox.enable()
             report("not overloaded redefined: %s",concat(skip," | "))
         end
         --
-     -- if ffi then
-     --     report("disabling ffi")
-     --  -- for k, v in next, ffi do
-     --  --     if k ~= "gc" then
-     --  --         local t = type(v)
-     --  --         if t == "function" then
-     --  --             ffi[k] = function() report("accessing ffi.%s",k) end
-     --  --         elseif t == "number" then
-     --  --             ffi[k] = 0
-     --  --         elseif t == "string" then
-     --  --             ffi[k] = ""
-     --  --         elseif t == "table" then
-     --  --             ffi[k] = { }
-     --  --         else
-     --  --             ffi[k] = false
-     --  --         end
-     --  --     end
-     --  -- end
-     --     for k, v in next, ffi do
-     --         if k ~= "gc" then
-     --             ffi[k] = nil
-     --         end
-     --     end
-     -- end
-        --
         initializers = nil
         finalizers   = nil
         originals    = nil
diff --git a/tex/context/base/mkiv/mlib-run.lua b/tex/context/base/mkiv/mlib-run.lua
index bc8cf4dbd..93ce1fec2 100644
--- a/tex/context/base/mkiv/mlib-run.lua
+++ b/tex/context/base/mkiv/mlib-run.lua
@@ -240,6 +240,7 @@ function metapost.load(name,method)
         script_error = metapost.scripterror,
         make_text    = metapost.maketext,
         extensions   = 1,
+     -- random_seed  = seed,
     }
     report_metapost("initializing number mode %a",method)
     local result
diff --git a/tex/context/base/mkiv/status-files.pdf b/tex/context/base/mkiv/status-files.pdf
index b70fcf6f0..de32cee5f 100644
--- a/tex/context/base/mkiv/status-files.pdf
+++ b/tex/context/base/mkiv/status-files.pdf
diff --git a/tex/context/base/mkiv/status-lua.pdf b/tex/context/base/mkiv/status-lua.pdf
index c47682fe6..584d6e654 100644
--- a/tex/context/base/mkiv/status-lua.pdf
+++ b/tex/context/base/mkiv/status-lua.pdf
diff --git a/tex/context/base/mkiv/trac-inf.lua b/tex/context/base/mkiv/trac-inf.lua
index 2aecb6703..f66485015 100644
--- a/tex/context/base/mkiv/trac-inf.lua
+++ b/tex/context/base/mkiv/trac-inf.lua
@@ -45,9 +45,7 @@ end
 local ticks   = clock
 local seconds = function(n) return n or 0 end
 
--- local okay, ffi = pcall(require,"ffi")
---
--- if ffi and os.type == "windows" then
+-- if FFISUPPORTED and ffi and os.type == "windows" then
 --
 --     local okay, kernel = pcall(ffi.load,"kernel32")
 --
diff --git a/tex/context/base/mkiv/util-sbx.lua b/tex/context/base/mkiv/util-sbx.lua
index 9cedcc1a6..48c424f00 100644
--- a/tex/context/base/mkiv/util-sbx.lua
+++ b/tex/context/base/mkiv/util-sbx.lua
@@ -530,7 +530,7 @@ function sandbox.disablelibraries()
     validlibraries = false
 end
 
-if ffi then
+if FFISUPPORTED and ffi then
 
     function sandbox.disablelibraries()
         validlibraries = false
diff --git a/tex/context/interface/mkiv/i-context.pdf b/tex/context/interface/mkiv/i-context.pdf
index 52980cfbd..3a86b8090 100644
--- a/tex/context/interface/mkiv/i-context.pdf
+++ b/tex/context/interface/mkiv/i-context.pdf
diff --git a/tex/context/interface/mkiv/i-readme.pdf b/tex/context/interface/mkiv/i-readme.pdf
index 5c51ce0b6..374b0ec39 100644
--- a/tex/context/interface/mkiv/i-readme.pdf
+++ b/tex/context/interface/mkiv/i-readme.pdf