2017-06-06 13:28:00

2 files changed, 58 insertions, 3 deletions

diff --git a/doc/context/sources/general/manuals/luatex/luatex-math.tex b/doc/context/sources/general/manuals/luatex/luatex-math.tex
index 3c29d9609..c76d7ad5f 100644
--- a/doc/context/sources/general/manuals/luatex/luatex-math.tex
+++ b/doc/context/sources/general/manuals/luatex/luatex-math.tex
@@ -1051,6 +1051,25 @@ The \type {\Ustopmath} and \type {\Ustopdisplaymath} primitives check if the cur
 math mode is the correct one (inline vs.\ displayed), but you can freely intermix
 the four mathon|/|mathoff commands with explicit dollar sign(s).
 
+\subsection{Script commands \type {\Unosuperscript} and \type {\Unosubscript}}
+
+These two commands result in super- and subscripts but with the current style (at the
+time of rendering). So,
+
+\startbuffer[script]
+$
+    x\Usuperscript  {1}\Usubscript  {2} =
+    x\Unosuperscript{1}\Unosubscript{2} =
+    x\Usuperscript  {1}\Unosubscript{2} =
+    x\Unosuperscript{1}\Usubscript  {2}
+$
+\stopbuffer
+
+\typebuffer
+
+results in \inlinebuffer[script].
+
+
 \subsection{Allowed math commands in non-math modes}
 
 The commands \type {\mathchar}, and \type {\Umathchar} and control sequences that
diff --git a/doc/context/sources/general/manuals/luatex/luatex-nodes.tex b/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
index f600eeb2f..0947bb58b 100644
--- a/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
+++ b/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
@@ -516,6 +516,23 @@ associated with the simple math objects: ord, op, bin, rel, open, close, punct,
 inner, over, under, vcent. These all have the same fields, and they are combined
 into a single node type with separate subtypes for differentiation.
 
+Some noads have an option field. The values in this bitset are common:
+
+\starttabulate[|lT|lT|]
+\NC set             \NC        0x08 \NC \NR
+\NC internal        \NC 0x00 + 0x08 \NC \NR
+\NC internal        \NC 0x01 + 0x08 \NC \NR
+\NC axis            \NC 0x02 + 0x08 \NC \NR
+\NC no axis         \NC 0x04 + 0x08 \NC \NR
+\NC exact           \NC 0x10 + 0x08 \NC \NR
+\NC left            \NC 0x11 + 0x08 \NC \NR
+\NC middle          \NC 0x12 + 0x08 \NC \NR
+\NC right           \NC 0x14 + 0x08 \NC \NR
+\NC no sub script   \NC 0x21 + 0x08 \NC \NR
+\NC no super script \NC 0x22 + 0x08 \NC \NR
+\NC no script       \NC 0x23 + 0x08 \NC \NR
+\stoptabulate
+
 \subsubsubsection{simple nodes}
 
 \starttabulate[|lT|l|p|]
@@ -525,6 +542,7 @@ into a single node type with separate subtypes for differentiation.
 \NC nucleus     \NC kernel node \NC base \NC \NR
 \NC sub         \NC kernel node \NC subscript \NC \NR
 \NC sup         \NC kernel node \NC superscript \NC \NR
+\NC options     \NC number      \NC bitset of rendering options \NC \NR
 \stoptabulate
 
 \subsubsubsection{accent nodes}
@@ -547,9 +565,9 @@ into a single node type with separate subtypes for differentiation.
 \NC style       \NC string   \NC contains the style \NC \NR
 \stoptabulate
 
-There are eight possibilities for the string value: one of \quote {display},
-\quote {text}, \quote {script}, or \quote {scriptscript}. Each of these can have
-a trailing \type {'} to signify \quote {cramped} styles.
+There are eight possibilities for the string value: one of \type {display},
+\type {text}, \type {script}, or \type {scriptscript}. Each of these can have
+be prefixed by \type {cramped}.
 
 \subsubsubsection{choice nodes}
 
@@ -1745,6 +1763,22 @@ font field or getter because it will resolve the family automatically for noads.
     node.family_font(<integer> fam)
 \stopfunctioncall
 
+\subsubsection{\type {node.set_synctex_fields} and \type {node.get_synctex_fields}}
+
+You can set and query the synctex fields, a file number aka tag and a line
+number, for a glue, kern, hlist, vlist, rule and math nodes as well as glyph
+nodes (although this last one are not used in native synctex).
+
+\startfunctioncall
+node.set_synctex_fields(<integer> f, <integer> l)
+<integer> f, <integer> l =
+    node.get_synctex_fields(<node> n)
+\stopfunctioncall
+
+Of course you need to know what you're doing as no checking on sane values takes
+place. Also, the synctex interpreter used in editors is rather peculiar and has
+some assumptions (heuristics).
+
 \section{Two access models}
 
 Deep down in \TEX\ a node has a number which is an numeric entry in a memory
@@ -1983,6 +2017,8 @@ consistency. You can of course always define additional accessor using \type
 \NC \type {whatsitsubtypes}      \NC \yes \NC \nop  \NC \NR
 \NC \type {whatsits}             \NC \yes \NC \nop  \NC \NR
 \NC \type {write}                \NC \yes \NC \yes  \NC \NR
+\NC \type {set_synctex_fields}   \NC \yes \NC \yes  \NC \NR
+\NC \type {get_synctex_fields}   \NC \yes \NC \yes  \NC \NR
 \stoptabulate
 
 % \stopcolumns