2018-10-18 00:16:00

39 files changed, 473 insertions, 112 deletions

diff --git a/doc/context/documents/general/manuals/graphics.pdf b/doc/context/documents/general/manuals/graphics.pdf
new file mode 100644
index 000000000..455071bc1
--- /dev/null
+++ b/doc/context/documents/general/manuals/graphics.pdf
diff --git a/doc/context/documents/general/manuals/luatex.pdf b/doc/context/documents/general/manuals/luatex.pdf
index 3af62acd7..19c1aa51e 100644
--- a/doc/context/documents/general/manuals/luatex.pdf
+++ b/doc/context/documents/general/manuals/luatex.pdf
diff --git a/doc/context/documents/general/manuals/musings.pdf b/doc/context/documents/general/manuals/musings.pdf
index 7573569b9..9d83dd555 100644
--- a/doc/context/documents/general/manuals/musings.pdf
+++ b/doc/context/documents/general/manuals/musings.pdf
diff --git a/doc/context/documents/general/qrcs/setup-cs.pdf b/doc/context/documents/general/qrcs/setup-cs.pdf
index db96bb54f..c7d6a120e 100644
--- a/doc/context/documents/general/qrcs/setup-cs.pdf
+++ b/doc/context/documents/general/qrcs/setup-cs.pdf
diff --git a/doc/context/documents/general/qrcs/setup-de.pdf b/doc/context/documents/general/qrcs/setup-de.pdf
index f65a41e0d..ad88a3407 100644
--- a/doc/context/documents/general/qrcs/setup-de.pdf
+++ b/doc/context/documents/general/qrcs/setup-de.pdf
diff --git a/doc/context/documents/general/qrcs/setup-en.pdf b/doc/context/documents/general/qrcs/setup-en.pdf
index e1e1bc1cd..5af37d839 100644
--- a/doc/context/documents/general/qrcs/setup-en.pdf
+++ b/doc/context/documents/general/qrcs/setup-en.pdf
diff --git a/doc/context/documents/general/qrcs/setup-fr.pdf b/doc/context/documents/general/qrcs/setup-fr.pdf
index cca294dfd..051c9b57b 100644
--- a/doc/context/documents/general/qrcs/setup-fr.pdf
+++ b/doc/context/documents/general/qrcs/setup-fr.pdf
diff --git a/doc/context/documents/general/qrcs/setup-it.pdf b/doc/context/documents/general/qrcs/setup-it.pdf
index 789088c63..d00631ee3 100644
--- a/doc/context/documents/general/qrcs/setup-it.pdf
+++ b/doc/context/documents/general/qrcs/setup-it.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-cs.pdf b/doc/context/documents/general/qrcs/setup-mapping-cs.pdf
index 7d38dea46..fcea50fe8 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-cs.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-cs.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-de.pdf b/doc/context/documents/general/qrcs/setup-mapping-de.pdf
index 0fc61cd85..523676873 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-de.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-de.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-en.pdf b/doc/context/documents/general/qrcs/setup-mapping-en.pdf
index 21537aa94..478f26510 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-en.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-en.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-fr.pdf b/doc/context/documents/general/qrcs/setup-mapping-fr.pdf
index 8ca776be2..1deb0f13a 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-fr.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-fr.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-it.pdf b/doc/context/documents/general/qrcs/setup-mapping-it.pdf
index a2691c1e8..481c3dcaa 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-it.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-it.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-nl.pdf b/doc/context/documents/general/qrcs/setup-mapping-nl.pdf
index 4e1491898..4fddb97c8 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-nl.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-nl.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-ro.pdf b/doc/context/documents/general/qrcs/setup-mapping-ro.pdf
index bbd19ee43..b1febc0aa 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-ro.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-ro.pdf
diff --git a/doc/context/documents/general/qrcs/setup-nl.pdf b/doc/context/documents/general/qrcs/setup-nl.pdf
index a1fdf1440..7eb50d16e 100644
--- a/doc/context/documents/general/qrcs/setup-nl.pdf
+++ b/doc/context/documents/general/qrcs/setup-nl.pdf
diff --git a/doc/context/documents/general/qrcs/setup-ro.pdf b/doc/context/documents/general/qrcs/setup-ro.pdf
index c67652ac4..e85c12bfe 100644
--- a/doc/context/documents/general/qrcs/setup-ro.pdf
+++ b/doc/context/documents/general/qrcs/setup-ro.pdf
diff --git a/doc/context/sources/general/manuals/graphics/graphics.tex b/doc/context/sources/general/manuals/graphics/graphics.tex
new file mode 100644
index 000000000..84a5acc22
--- /dev/null
+++ b/doc/context/sources/general/manuals/graphics/graphics.tex
@@ -0,0 +1,286 @@
+% language=uk
+
+\usemodule[article-basic]
+\usemodule[abbreviations-smallcaps]
+\usemodule[setups-basics]
+\usemodule[scite]
+
+% \setupbodyfont
+%   [dejavu]
+
+\loadsetups[context-en]
+
+\definecolor
+  [mysetupscolora]
+  [a=1,
+   t=.25,
+   r=.5,
+   g=.5]
+
+\definecolor
+  [mysetupscolorb]
+  [a=1,
+   t=.25,
+   g=.25,
+   b=.25]
+
+\definetextbackground
+  [mysetups]
+  [before=\blank,
+   after=\blank,
+   topoffset=10pt,
+   leftoffset=10pt,
+   location=paragraph,
+   backgroundcolor=mysetupscolora,
+   backgroundcolor=mysetupscolorb,
+   frame=off]
+
+\startsetups xml:setups:start
+    \starttextbackground[mysetups]
+\stopsetups
+
+\startsetups xml:setups:stop
+    \stoptextbackground
+\stopsetups
+
+\starttext
+
+\startbuffer[image]
+    \startluacode
+
+        local min, max, random = math.min, math.max, math.random
+
+        -- kind of self-explaining:
+
+        local xsize      = 210
+        local ysize      = 297
+        local colordepth = 1
+        local usemask    = true
+        local colorspace = "rgb"
+
+        -- initialization:
+
+        local bitmap = graphics.bitmaps.new(xsize,ysize,colorspace,colordepth,usemask)
+
+        -- filling the bitmap:
+
+        local data    = bitmap.data
+        local mask    = bitmap.mask
+        local minmask = 100
+        local maxmask = 200
+
+        for i=1,ysize do
+            local d = data[i]
+            local m = mask[i]
+            for j=1,xsize do
+                d[j] = { i, max(i,j), j, min(i,j) }
+                m[j] = random(minmask,maxmask)
+            end
+        end
+
+        -- flushing the lot:
+
+        graphics.bitmaps.tocontext(bitmap)
+
+    \stopluacode
+\stopbuffer
+
+\definelayer
+   [page]
+   [width=\paperwidth,
+    height=\paperheight]
+
+\setlayer
+   [page]
+   {\scale
+      [width=\paperwidth]
+      {\ignorespaces
+       \getbuffer[image]%
+       \removeunwantedspaces}}
+
+\setlayer
+   [page]
+   [preset=rightbottom,
+    hoffset=10mm,
+    voffset=45mm]
+   {\scale
+      [width=.6\paperwidth]
+      {Graphics}}
+
+% \setlayer
+%    [page]
+%    [preset=righttop,
+%     hoffset=10mm,
+%     voffset=20mm]
+%    {\rotate{\scale
+%       [width=.3\paperheight]
+%       {\ConTeXt\ MkIV}}}
+
+\setlayer
+   [page]
+   [preset=rightbottom,
+    hoffset=10mm,
+    voffset=20mm]
+   {\scale
+      [width=.6\paperwidth]
+      {Hans Hagen}}
+
+\startpagemakeup
+    \flushlayer[page]
+    \vfill
+\stoppagemakeup
+
+\startsubject[title=Introduction]
+
+This manual is about integrating graphics your document. Doing this is not really
+that complex so this manual will be short. Because graphic inclusion is related
+to the backend some options will discussed. It's typical one of these manuals
+that can grow over time.
+
+\stopsubject
+
+\startsubject[title=Inclusion]
+
+The command to include an image is:
+
+\showsetup{externalfigure}
+
+and its related settings are:
+
+\showsetup{setupexternalfigure}
+
+So you can say:
+
+\starttyping[option=TEX]
+\externalfigure[cow.pdf][width=4cm]
+\stoptyping
+
+The suffix is optional, which means that this will also work:
+
+\starttyping[option=TEX]
+\externalfigure[cow][width=4cm]
+\stoptyping
+
+\stopsubject
+
+\startsubject[title=Defining]
+
+{\em todo}
+
+\showsetup{useexternalfigure}
+\showsetup{defineexternalfigure}
+\showsetup{registerexternalfigure}
+
+\stopsubject
+
+\startsubject[title=Analyzing]
+
+{\em todo}
+
+\showsetup{getfiguredimensions}
+
+\showsetup{figurefilename}
+\showsetup{figurefilepath}
+\showsetup{figurefiletype}
+\showsetup{figurefullname}
+\showsetup{figureheight}
+\showsetup{figurenaturalheight}
+\showsetup{figurenaturalwidth}
+\showsetup{figuresymbol}
+\showsetup{figurewidth}
+
+\showsetup{noffigurepages}
+
+\stopsubject
+
+\startsubject[title=Collections]
+
+{\em todo}
+
+\showsetup{externalfigurecollectionmaxheight}
+\showsetup{externalfigurecollectionmaxwidth}
+\showsetup{externalfigurecollectionminheight}
+\showsetup{externalfigurecollectionminwidth}
+\showsetup{externalfigurecollectionparameter}
+\showsetup{startexternalfigurecollection}
+
+\stopsubject
+
+\startsubject[title=Conversion]
+
+{\em todo}
+
+\stopsubject
+
+\startsubject[title=Figure databases]
+
+{\em todo}
+
+\showsetup{usefigurebase}
+
+\stopsubject
+
+\startsubject[title=Overlays]
+
+{\em todo}
+
+\showsetup{overlayfigure}
+\showsetup{pagefigure}
+
+\stopsubject
+
+\startsubject[title=Scaling]
+
+Images are normally scaled proportionally but if needed you can give an
+explicit height and width. The \type {\scale} command shares this property
+and can be used to scale in the same way as \type {\externalfigure}. I will
+illustrate this with an example.
+
+You can define your own bitmaps, like I did with the cover of this manual:
+
+\typebuffer[image][option=LUA]
+
+The actually inclusion of this image happened with:
+
+\starttyping[option=TEX]
+\scale
+  [width=\paperwidth]
+  {\getbuffer[image]}
+\stoptyping
+
+\stopsubject
+
+\startsubject[title=The backend]
+
+Traditionally \TEX\ sees an image as just a box with dimensions and in \LUATEX\
+it is actually a special kind of rule that carries information about what to
+inject in the final (\PDF) file. In regular \LUATEX\ the core formats \type
+{pdf}, \type {png}, \type {jpg} and \type {jp2} are dealt with by the backend but
+in \CONTEXT\ we can use \LUA\ instead. We might default to that method at some
+point but for now you need to enable that explicitly:
+
+\starttyping[option=TEX]
+\enabledirectrive[graphics.pdf.uselua]
+\enabledirectrive[graphics.jpg.uselua]
+\enabledirectrive[graphics.jp2.uselua]
+\enabledirectrive[graphics.png.uselua]
+\stoptyping
+
+All four can be enabled with:
+
+\starttyping[option=TEX]
+\enabledirectrive[graphics.uselua]
+\stoptyping
+
+Performance|-|wise only \PNG\ inclusion can be less efficient, but only when you
+use interlaced images or large images with masks. It makes no real sense in a
+professional workflow to use the (larger) interlaced images, and masks are seldom
+used at high resolutions, so in practice one will not really notice loss of
+performance.
+
+The advantage of this method is that we can provide more options, intercept bad
+images that make the backend abort and lessen the dependency on libraries.
+
+\stopsubject
+
+\stoptext
diff --git a/tex/context/base/mkii/cont-new.mkii b/tex/context/base/mkii/cont-new.mkii
index 72d476f01..3f7c0e7ef 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{2018.10.17 15:06}
+\newcontextversion{2018.10.18 00:07}
 
 %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 922f96320..d530cd65d 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{2018.10.17 15:06}
+\edef\contextversion{2018.10.18 00:07}
 
 %D For those who want to use this:
 
diff --git a/tex/context/base/mkiv/char-act.mkiv b/tex/context/base/mkiv/char-act.mkiv
index ff4dc621f..dd9a325f2 100644
--- a/tex/context/base/mkiv/char-act.mkiv
+++ b/tex/context/base/mkiv/char-act.mkiv
@@ -50,7 +50,7 @@
 %     \unexpanded\gdef\setcontrolspaces{\catcode\spaceasciicode\activecatcode\def {\controlspace}}
 % \egroup
 
-\unexpanded\def\obeyspaces      {\catcode\spaceasciicode\activecatcode\letcharcode\spaceasciicode\obeyedspace }
+%unexpanded\def\obeyspaces      {\catcode\spaceasciicode\activecatcode\letcharcode\spaceasciicode\obeyedspace }
 \unexpanded\def\setcontrolspaces{\catcode\spaceasciicode\activecatcode\letcharcode\spaceasciicode\controlspace}
 
 %D \macros
@@ -78,12 +78,16 @@
 % \unexpanded\def\ignorepages{\catcode\formfeedasciicode \ignorecatcode}
 % \unexpanded\def\ignoreeofs {\catcode\endoffileasciicode\ignorecatcode}
 
+% but ... as we don't want to freeze to \obeyedspace etc which can be set after \obeyspaces, we
+% use an idirectness
+
 \def\_obeyed_space_{\obeyedspace}
 \def\_obeyed_tab_  {\obeyedtab}
 \def\_obeyed_line_ {\obeyedline}
 \def\_obeyed_page_ {\obeyedpage}
 
-\unexpanded\def\obeytabs   {\catcode\tabasciicode      \activecatcode\letcharcode\tabasciicode      \_obeyed_tab_ }
+\unexpanded\def\obeyspaces {\catcode\spaceasciicode    \activecatcode\letcharcode\spaceasciicode    \_obeyed_space_}
+\unexpanded\def\obeytabs   {\catcode\tabasciicode      \activecatcode\letcharcode\tabasciicode      \_obeyed_tab_}
 \unexpanded\def\obeylines  {\catcode\endoflineasciicode\activecatcode\letcharcode\endoflineasciicode\_obeyed_line_}
 \unexpanded\def\obeypages  {\catcode\formfeedasciicode \activecatcode\letcharcode\formfeedasciicode \_obeyed_page_}
 
@@ -92,6 +96,8 @@
 \unexpanded\def\ignorepages{\catcode\formfeedasciicode \ignorecatcode}
 \unexpanded\def\ignoreeofs {\catcode\endoffileasciicode\ignorecatcode}
 
+\unexpanded\def\setcontrolspaces{\catcode\spaceasciicode\activecatcode\letcharcode\spaceasciicode\_control_space_}
+
 %D \macros
 %D   {naturaltextext}
 %D
diff --git a/tex/context/base/mkiv/cont-new.mkiv b/tex/context/base/mkiv/cont-new.mkiv
index 5ce172570..02b2e4f41 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{2018.10.17 15:06}
+\newcontextversion{2018.10.18 00:07}
 
 %D This file is loaded at runtime, thereby providing an excellent place for
 %D hacks, patches, extensions and new features.
diff --git a/tex/context/base/mkiv/context.mkiv b/tex/context/base/mkiv/context.mkiv
index 8b144d609..e8a83d039 100644
--- a/tex/context/base/mkiv/context.mkiv
+++ b/tex/context/base/mkiv/context.mkiv
@@ -42,7 +42,7 @@
 %D has to match \type {YYYY.MM.DD HH:MM} format.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2018.10.17 15:06}
+\edef\contextversion{2018.10.18 00:07}
 \edef\contextkind   {beta}
 
 %D For those who want to use this:
diff --git a/tex/context/base/mkiv/font-con.lua b/tex/context/base/mkiv/font-con.lua
index d238084d0..b067c8c40 100644
--- a/tex/context/base/mkiv/font-con.lua
+++ b/tex/context/base/mkiv/font-con.lua
@@ -425,6 +425,7 @@ function constructors.scale(tfmdata,specification)
     targetparameters.extrafactor = extrafactor -- context specific
     --
     local tounicode     = fonts.mappings.tounicode
+    local unknowncode   = tounicode(0xFFFD)
     --
     local defaultwidth  = resources.defaultwidth  or 0
     local defaultheight = resources.defaultheight or 0
@@ -740,7 +741,7 @@ function constructors.scale(tfmdata,specification)
             -- in luatex > 0.85 we can do this:
             -- chr.tounicode = isunicode
         else
---             chr.tounicode = "FFFD"
+            chr.tounicode = unknowncode
         end
         if hasquality then
             -- we could move these calculations elsewhere (saves calculations)
diff --git a/tex/context/base/mkiv/font-map.lua b/tex/context/base/mkiv/font-map.lua
index 712b1584c..7dd538858 100644
--- a/tex/context/base/mkiv/font-map.lua
+++ b/tex/context/base/mkiv/font-map.lua
@@ -225,7 +225,7 @@ local unknown = f_single(0xFFFD)
 --     elseif k < 0xD7FF or (k > 0xDFFF and k <= 0xFFFF) then
 --         v = f_single(k)
 --     else
---         k = k - 0x10000
+--         local k = k - 0x10000
 --         v = f_double(rshift(k,10)+0xD800,k%1024+0xDC00)
 --     end
 --     t[k] = v
@@ -251,33 +251,62 @@ local conc = { }
 
 -- table.makeweak(hash)
 
+-- table.setmetatableindex(hash,function(t,k)
+--     if type(k) == "table" then
+--         local n = #k
+--         for l=1,n do
+--             conc[l] = hash[k[l]]
+--         end
+--         return concat(conc,"",1,n)
+--     end
+--     local v
+--     if k >= 0x00E000 and k <= 0x00F8FF then
+--         v = unknown
+--     elseif k >= 0x0F0000 and k <= 0x0FFFFF then
+--         v = unknown
+--     elseif k >= 0x100000 and k <= 0x10FFFF then
+--         v = unknown
+--     elseif k < 0xD7FF or (k > 0xDFFF and k <= 0xFFFF) then
+--         v = f_single(k)
+--     else
+--         local k = k - 0x10000
+--         v = f_double(rshift(k,10)+0xD800,k%1024+0xDC00)
+--     end
+--     t[k] = v
+--     return v
+-- end)
+--
+-- local function tounicode(unicode)
+--     return hash[unicode]
+-- end
+
 table.setmetatableindex(hash,function(t,k)
+    if k < 0xD7FF or (k > 0xDFFF and k <= 0xFFFF) then
+        v = f_single(k)
+    else
+        local k = k - 0x10000
+        v = f_double(rshift(k,10)+0xD800,k%1024+0xDC00)
+    end
+    t[k] = v
+    return v
+end)
+
+local function tounicode(k)
     if type(k) == "table" then
         local n = #k
         for l=1,n do
             conc[l] = hash[k[l]]
         end
         return concat(conc,"",1,n)
-    end
-    local v
-    if k >= 0x00E000 and k <= 0x00F8FF then
-        v = unknown
+    elseif k >= 0x00E000 and k <= 0x00F8FF then
+        return unknown
     elseif k >= 0x0F0000 and k <= 0x0FFFFF then
-        v = unknown
+        return unknown
     elseif k >= 0x100000 and k <= 0x10FFFF then
-        v = unknown
-    elseif k < 0xD7FF or (k > 0xDFFF and k <= 0xFFFF) then
-        v = f_single(k)
+        return unknown
     else
-        k = k - 0x10000
-        v = f_double(rshift(k,10)+0xD800,k%1024+0xDC00)
+        return hash[k]
     end
-    t[k] = v
-    return v
-end)
-
-local function tounicode(unicode)
-    return hash[unicode]
 end
 
 local function fromunicode16(str)
diff --git a/tex/context/base/mkiv/font-oup.lua b/tex/context/base/mkiv/font-oup.lua
index 14df60822..cd44bfef7 100644
--- a/tex/context/base/mkiv/font-oup.lua
+++ b/tex/context/base/mkiv/font-oup.lua
@@ -970,7 +970,7 @@ local function stripredundant(fontdata)
         local n = 0
         local c = 0
         -- in context we always strip
-        if not context and fonts.privateoffsets.keepnames then
+        if (not context and fonts.privateoffsets.keepnames) or forcekeep then
             for unicode, d in next, descriptions do
                 if d.class == "base" then
                     d.class = nil
diff --git a/tex/context/base/mkiv/grph-img.lua b/tex/context/base/mkiv/grph-img.lua
index 3714b649e..c76733cbf 100644
--- a/tex/context/base/mkiv/grph-img.lua
+++ b/tex/context/base/mkiv/grph-img.lua
@@ -687,7 +687,6 @@ do
         else
             return
         end
-        -- maybe alpha some day
         if colordepth == 8 then
             colordepth = 1
         elseif colordepth == 16 then
diff --git a/tex/context/base/mkiv/grph-inc.lua b/tex/context/base/mkiv/grph-inc.lua
index 553c60463..a41d3a3f6 100644
--- a/tex/context/base/mkiv/grph-inc.lua
+++ b/tex/context/base/mkiv/grph-inc.lua
@@ -2262,45 +2262,32 @@ local function png_checker(data) -- same as jpg (for now)
 end
 
 directives.register("graphics.pdf.uselua",function(v)
-    if v then
-        report("%s Lua based PDF inclusion","enabling")
-        checkers.pdf = pdf_checker
-    else
-        report("%s Lua based PDF inclusion","disabling")
-        checkers.pdf = nil
-    end
+    checkers.pdf = v and pdf_checker or nil
+    report("%s Lua based PDF inclusion",v and "enabling" or "disabling")
 end)
 
 directives.register("graphics.jpg.uselua",function(v)
-    if v then
-        report("%s Lua based JPG inclusion","enabling")
-        checkers.jpg = jpg_checker
-    else
-        report("%s Lua based JPG inclusion","disabling")
-        checkers.jpg = nil
-    end
+    checkers.jpg = v and jpg_checker or nil
+    report("%s Lua based JPG inclusion",v and "enabling" or "disabling")
 end)
 
 directives.register("graphics.jp2.uselua",function(v)
-    if v then
-        report("%s Lua based JP2 inclusion","enabling")
-        checkers.jp2 = jp2_checker
-    else
-        report("%s Lua based JP2 inclusion","disabling")
-        checkers.jp2 = nil
-    end
+    checkers.jp2 = v and jp2_checker or nil
+    report("%s Lua based JP2 inclusion",v and "enabling" or "disabling")
 end)
 
 directives.register("graphics.png.uselua",function(v)
-    if v then
-        report("%s Lua based PNG inclusion","enabling")
-        checkers.png = png_checker
-    else
-        report("%s Lua based PNG inclusion","disabling")
-        checkers.png = nil
-    end
+    checkers.png = v and png_checker or nil
+    report("%s Lua based PNG inclusion",v and "enabling" or "disabling")
 end)
 
+directives.register("graphics.uselua",function(v)
+    checkers.pdf = v and pdf_checker or nil
+    checkers.jpg = v and jpg_checker or nil
+    checkers.jp2 = v and jp2_checker or nil
+    checkers.png = v and png_checker or nil
+    report("%s Lua based PDF, PNG, JPG and JP2 inclusion",v and "enabling" or "disabling")
+end)
 
 -- directives.enable("graphics.pdf.uselua")
 --
@@ -2344,30 +2331,18 @@ function bitmaps.new(xsize,ysize,colorspace,colordepth,mask)
 end
 
 local function flush(bitmap)
-    img.write(lpdf.injectors.bitmap(bitmap))
+    return img.node(lpdf.injectors.bitmap(bitmap))
 end
 
 bitmaps.flush = flush
 
-function bitmaps.tocontext(bitmap,width,height)
-    if type(width) == "number" then
-        width = width .. "sp"
-    end
-    if type(height) == "number" then
-        height = height .. "sp"
-    end
-    if not height and not height then
-        width  = bitmap.xsize .. "bp"
-        height = bitmap.ysize .. "bp"
-    end
+function bitmaps.tocontext(bitmap)
     context.scale (
         {
-            width  = width,
-            height = height,
+            width  = bitmap.xsize .. "bp",
+            height = bitmap.ysize .. "bp",
         },
-        function()
-            flush(bitmap)
-        end
+        flush(bitmap)
     )
 end
 
diff --git a/tex/context/base/mkiv/lpdf-img.lua b/tex/context/base/mkiv/lpdf-img.lua
index 28890887a..11aa00787 100644
--- a/tex/context/base/mkiv/lpdf-img.lua
+++ b/tex/context/base/mkiv/lpdf-img.lua
@@ -39,6 +39,8 @@ local report_jpg           = logs.reporter("graphics","jpg")
 local report_jp2           = logs.reporter("graphics","jp2")
 local report_png           = logs.reporter("graphics","png")
 
+trackers.register("graphics.backend", function(v) trace = v end)
+
 local injectors = { }
 lpdf.injectors  = injectors
 
diff --git a/tex/context/base/mkiv/spac-hor.mkiv b/tex/context/base/mkiv/spac-hor.mkiv
index 3e4c28157..db8d12ae2 100644
--- a/tex/context/base/mkiv/spac-hor.mkiv
+++ b/tex/context/base/mkiv/spac-hor.mkiv
@@ -1122,6 +1122,8 @@
 \unexpanded\def\spac_spaces_checked_normal {\mathortext\normalspace{\dontleavehmode\normalspace}}%
 \unexpanded\def\spac_spaces_checked_fixed  {\mathortext\normalspace{\dontleavehmode\fixedspace}}%
 
+% hm, order matters when we \let in \obeyspaces
+
 \installspacemethod \v!on
   {\obeyspaces
    \let\obeyedspace\spac_spaces_checked_control
diff --git a/tex/context/base/mkiv/status-files.pdf b/tex/context/base/mkiv/status-files.pdf
index 20a7f18e1..e2c84f900 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 b48b2651a..6875b27e6 100644
--- a/tex/context/base/mkiv/status-lua.pdf
+++ b/tex/context/base/mkiv/status-lua.pdf
diff --git a/tex/context/base/mkiv/tabl-tsp.mkiv b/tex/context/base/mkiv/tabl-tsp.mkiv
index 2c4b694b3..e0ddce38a 100644
--- a/tex/context/base/mkiv/tabl-tsp.mkiv
+++ b/tex/context/base/mkiv/tabl-tsp.mkiv
@@ -441,6 +441,35 @@
       \exitloop
    \fi\fi}
 
+%D Maybe handy:
+%D
+%D \starttyping
+%D \splitfloat
+%D   {\placefigure{some caption}}
+%D   {\startsplittext
+%D    \typefile[option=TEX,before=,after=]{oeps.tex}
+%D    \stopsplittext}
+%D \stoptyping
+
+\def\handlesplittext#1%
+  {\setbox\tsplitresult\vbox
+     {\vsplit\tsplitcontent to \dimexpr#1-\lineheight\relax}}
+
+\unexpanded\def\startsplittext
+  {\begingroup
+   \resettsplit
+   \let\tsplitminimumfreelines\!!zerocount
+   \let\tsplitminimumfreespace\!!zeropoint
+   \let\extrasplitfloatlines  \!!plusone
+   \let\tsplitdirectsplitter  \handlesplittext
+   \setbox\tsplitcontent\vbox\bgroup
+   \insidefloattrue}
+
+\unexpanded\def\stopsplittext
+  {\egroup
+   \handledirecttsplit
+   \endgroup}
+
 \protect \endinput
 
 % test cases
diff --git a/tex/context/interface/mkiv/i-context.pdf b/tex/context/interface/mkiv/i-context.pdf
index e1e1bc1cd..5af37d839 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 b8ae1bd64..003bdabaf 100644
--- a/tex/context/interface/mkiv/i-readme.pdf
+++ b/tex/context/interface/mkiv/i-readme.pdf
diff --git a/tex/context/modules/mkiv/m-scite.mkiv b/tex/context/modules/mkiv/m-scite.mkiv
index eaac6ecae..9182fa2ec 100644
--- a/tex/context/modules/mkiv/m-scite.mkiv
+++ b/tex/context/modules/mkiv/m-scite.mkiv
@@ -227,7 +227,7 @@ local function lexdata(data,lexname)
         end
         data = indent(data)
     end
-io.savedata("temp.logs ",data)
+ -- io.savedata("temp.log",data)
     assignbuffer("lex",data)
 end
 
@@ -324,11 +324,11 @@ visualizers.register("json",  visualizer)
 
 \unexpanded\def\buff_scite_slxb#1%
   {\hangindent\numexpr#1+2\relax\scitespaceskip
-   \hskip#1\scitespaceskip
+   \begstrut\hskip#1\scitespaceskip
    \hangafter 1\relax}
 
 \unexpanded\def\buff_scite_slxe
-  {\par}
+  {\endstrut\par}
 
 \unexpanded\def\buff_scite_slxs  {\hskip\scitespaceskip\relax}
 \unexpanded\def\buff_scite_slxf#1{\hskip#1\scitespaceskip\relax}
diff --git a/tex/context/modules/mkiv/s-fonts-system.lua b/tex/context/modules/mkiv/s-fonts-system.lua
index 5d2692473..dc0f2e6a3 100644
--- a/tex/context/modules/mkiv/s-fonts-system.lua
+++ b/tex/context/modules/mkiv/s-fonts-system.lua
@@ -114,7 +114,7 @@ end
 
 local splitter = lpeg.splitat(lpeg.S("._"),true)
 
-local method = 3
+local method = 4
 
 function moduledata.fonts.system.showinstalledglyphnames(specification)
     specification = interfaces.checkedspecification(specification)
@@ -129,7 +129,8 @@ function moduledata.fonts.system.showinstalledglyphnames(specification)
         end
     end
     for filename in table.sortedhash(files) do
-        logs.report("system","fontfile: %s",file.nameonly(filename))
+        local fontname = file.nameonly(filename)
+        logs.report("system","fontfile: %s",fontname)
         local data = table.load(filename)
         if data then
             if method == 1 then
@@ -178,31 +179,60 @@ function moduledata.fonts.system.showinstalledglyphnames(specification)
                         end
                     end
                 end
+            elseif method == 4 then
+                local descriptions = data.descriptions
+                if descriptions then
+                    for u, d in sortedhash(descriptions) do
+                        local n = d.name
+                        local u = d.unicode
+                        if n and not u and not find(n,"^%.") then
+                            local n = names[n]
+                            n[#n+1] = fontname
+                        end
+                    end
+                end
             else
                 -- nothing
             end
         end
     end
-    if next(names) then
-        context.starttabulate { "|l|pl|" }
-        local f_u = formatters["%04X~(%i)"]
-        local f_s = formatters["%s~(%i)"]
-        for k, v in sortedhash(names) do
-            local t = { }
-            for k, v in sortedhash(v) do
-                if type(k) == "string" then
-                    t[#t+1] = f_s(k,v)
-                else
-                    t[#t+1] = f_u(k,v)
+ -- names[".notdef"] = nil
+ -- names[".null"]   = nil
+    if method == 4 then
+        if next(names) then
+            context.starttabulate { "|l|pl|" }
+            local f_u = formatters["%04X~(%i)"]
+            local f_s = formatters["%s~(%i)"]
+            for k, v in sortedhash(names) do
+                NC() ctx_verbatim(k)
+                NC() context("% t",v)
+                NC() NR()
+            end
+            context.stoptabulate()
+        end
+        table.save("s-fonts-system-glyph-unknowns.lua",names)
+    else
+        if next(names) then
+            context.starttabulate { "|l|pl|" }
+            local f_u = formatters["%04X~(%i)"]
+            local f_s = formatters["%s~(%i)"]
+            for k, v in sortedhash(names) do
+                local t = { }
+                for k, v in sortedhash(v) do
+                    if type(k) == "string" then
+                        t[#t+1] = f_s(k,v)
+                    else
+                        t[#t+1] = f_u(k,v)
+                    end
                 end
+                NC() ctx_verbatim(k)
+                NC() context("%, t",t)
+                NC() NR()
             end
-            NC() ctx_verbatim(k)
-            NC() context("% t",t)
-            NC() NR()
+            context.stoptabulate()
         end
-        context.stoptabulate()
+        table.save("s-fonts-system-glyph-names.lua",names)
     end
-    table.save("s-fonts-system-glyph-names.lua",names)
 end
 
 -- -- --
diff --git a/tex/context/modules/mkiv/s-fonts-system.mkiv b/tex/context/modules/mkiv/s-fonts-system.mkiv
index 03599b0df..9a0f7485d 100644
--- a/tex/context/modules/mkiv/s-fonts-system.mkiv
+++ b/tex/context/modules/mkiv/s-fonts-system.mkiv
@@ -39,12 +39,12 @@
 
 %     \showinstalledfonts
 
-    \enabletrackers[otf.keepnames]
+%     \enabletrackers[otf.keepnames]
 
-    \cacheinstalledfonts[suffixes={otf,ttf,afm}]
+%     \cacheinstalledfonts[suffixes={otf,ttf,afm}]
 %     \cacheinstalledfonts[threshold=4000000,suffixes={otf,ttf,afm}]
 %     \cacheinstalledfonts[threshold=2000000,suffixes={otf,ttf,afm}]
 
-%     \showinstalledglyphnames
+    \showinstalledglyphnames
 
 \stoptext
diff --git a/tex/generic/context/luatex/luatex-fonts-merged.lua b/tex/generic/context/luatex/luatex-fonts-merged.lua
index f97f82489..0a14e6082 100644
--- a/tex/generic/context/luatex/luatex-fonts-merged.lua
+++ b/tex/generic/context/luatex/luatex-fonts-merged.lua
@@ -1,6 +1,6 @@
 -- merged file : c:/data/develop/context/sources/luatex-fonts-merged.lua
 -- parent file : c:/data/develop/context/sources/luatex-fonts.lua
--- merge date  : 10/17/18 15:06:55
+-- merge date  : 10/18/18 00:07:52
 
 do -- begin closure to overcome local limits and interference
 
@@ -9414,6 +9414,7 @@ function constructors.scale(tfmdata,specification)
   targetparameters.forcedsize=forcedsize 
   targetparameters.extrafactor=extrafactor
   local tounicode=fonts.mappings.tounicode
+  local unknowncode=tounicode(0xFFFD)
   local defaultwidth=resources.defaultwidth or 0
   local defaultheight=resources.defaultheight or 0
   local defaultdepth=resources.defaultdepth or 0
@@ -9669,6 +9670,7 @@ function constructors.scale(tfmdata,specification)
       chr.unicode=isunicode
       chr.tounicode=tounicode(isunicode)
     else
+      chr.tounicode=unknowncode
     end
     if hasquality then
       local ve=character.expansion_factor
@@ -10759,31 +10761,31 @@ local unknown=f_single(0xFFFD)
 local hash={}
 local conc={}
 table.setmetatableindex(hash,function(t,k)
+  if k<0xD7FF or (k>0xDFFF and k<=0xFFFF) then
+    v=f_single(k)
+  else
+    local k=k-0x10000
+    v=f_double(rshift(k,10)+0xD800,k%1024+0xDC00)
+  end
+  t[k]=v
+  return v
+end)
+local function tounicode(k)
   if type(k)=="table" then
     local n=#k
     for l=1,n do
       conc[l]=hash[k[l]]
     end
     return concat(conc,"",1,n)
-  end
-  local v
-  if k>=0x00E000 and k<=0x00F8FF then
-    v=unknown
+  elseif k>=0x00E000 and k<=0x00F8FF then
+    return unknown
   elseif k>=0x0F0000 and k<=0x0FFFFF then
-    v=unknown
+    return unknown
   elseif k>=0x100000 and k<=0x10FFFF then
-    v=unknown
-  elseif k<0xD7FF or (k>0xDFFF and k<=0xFFFF) then
-    v=f_single(k)
+    return unknown
   else
-    k=k-0x10000
-    v=f_double(rshift(k,10)+0xD800,k%1024+0xDC00)
+    return hash[k]
   end
-  t[k]=v
-  return v
-end)
-local function tounicode(unicode)
-  return hash[unicode]
 end
 local function fromunicode16(str)
   if #str==4 then
@@ -21065,7 +21067,7 @@ local function stripredundant(fontdata)
   if descriptions then
     local n=0
     local c=0
-    if not context and fonts.privateoffsets.keepnames then
+    if (not context and fonts.privateoffsets.keepnames) or forcekeep then
       for unicode,d in next,descriptions do
         if d.class=="base" then
           d.class=nil