2021-05-19 18:21:00

3 files changed, 57 insertions, 25 deletions

diff --git a/doc/context/sources/general/manuals/luametatex/luametatex-callbacks.tex b/doc/context/sources/general/manuals/luametatex/luametatex-callbacks.tex
index 4cb2add79..213081e36 100644
--- a/doc/context/sources/general/manuals/luametatex/luametatex-callbacks.tex
+++ b/doc/context/sources/general/manuals/luametatex/luametatex-callbacks.tex
@@ -359,6 +359,26 @@ end
 
 This callback does not replace any internal code.
 
+\subsection{\cbk {glyph_run}}
+
+\topicindex{callbacks+fonts}
+
+When set this callback is triggered when \TEX\ normally handles the ligaturing
+and kerning. In \LUATEX\ you use the \typ {hpack_filter} and \typ
+{per_linebreak_filter} callbacks for that (where each passes different
+arguments). This callback doesn't get triggered when there are no glyphs (in
+\LUATEX\ this optimization is controlled by a a variable).
+
+\startfunctioncall
+function(<node> head, <string> groupcode, <number> direction])
+    return <node> newhead
+end
+\stopfunctioncall
+
+The traditional \TEX\ font processing is bypassed so you need to take care of that
+with the helpers. (For the moment we keep the ligaturing and kerning callbacks but
+they are kind of obsolete.)
+
 \subsection{\cbk {hpack_filter}}
 
 \topicindex{callbacks+packing}
@@ -368,7 +388,7 @@ material. Math items and line boxes are ignored at the moment.
 
 \startfunctioncall
 function(<node> head, <string> groupcode, <number> size,
-         <string> packtype [, <string> direction] [, <node> attributelist])
+         <string> packtype [, <number> direction] [, <node> attributelist])
     return <node> newhead
 end
 \stopfunctioncall
@@ -378,9 +398,6 @@ The \type {packtype} is either \type {additional} or \type {exactly}. If \type
 \type {exactly}, then the \type {size} is a \type {\hbox to ...}. In both cases,
 the number is in scaled points.
 
-The \type {direction} is either one of the three-letter direction specifier
-strings, or \type {nil}.
-
 This callback does not replace any internal code.
 
 \subsection{\cbk {vpack_filter}}
@@ -396,7 +413,7 @@ that it is called at different moments, there is an extra variable that matches
 
 \startfunctioncall
 function(<node> head, <string> groupcode, <number> size, <string> packtype,
-        <number> maxdepth [, <string> direction] [, <node> attributelist]))
+        <number> maxdepth [, <number> direction] [, <node> attributelist]))
     return <node> newhead
 end
 \stopfunctioncall
@@ -461,7 +478,7 @@ This callback is called when \TEX\ is ready to start boxing the box 255 for \prm
 
 \startfunctioncall
 function(<node> head, <string> groupcode, <number> size, <string> packtype,
-        <number> maxdepth [, <string> direction])
+        <number> maxdepth [, <number> direction])
     return <node> newhead
 end
 \stopfunctioncall
diff --git a/doc/context/sources/general/manuals/luametatex/luametatex-style.tex b/doc/context/sources/general/manuals/luametatex/luametatex-style.tex
index 1b4a8d5a1..231e15ca1 100644
--- a/doc/context/sources/general/manuals/luametatex/luametatex-style.tex
+++ b/doc/context/sources/general/manuals/luametatex/luametatex-style.tex
@@ -146,7 +146,7 @@
 \setuphead [chapter]      [align={flushleft,broad},style=\bfd]
 \setuphead [section]      [align={flushleft,broad},style=\bfb]
 \setuphead [subsection]   [align={flushleft,broad},style=\bfa]
-\setuphead [subsubsection][align={flushleft,broad},style=\bf]
+\setuphead [subsubsection][align={flushleft,broad},style=\bf,after=\blank,before=\blank]
 
 \setuphead [chapter]      [color=maincolor]
 \setuphead [section]      [color=maincolor]
diff --git a/doc/context/sources/general/manuals/luametatex/luametatex-tex.tex b/doc/context/sources/general/manuals/luametatex/luametatex-tex.tex
index decabbca7..1cb03677b 100644
--- a/doc/context/sources/general/manuals/luametatex/luametatex-tex.tex
+++ b/doc/context/sources/general/manuals/luametatex/luametatex-tex.tex
@@ -1685,30 +1685,45 @@ that overhead. Passing a value of 1 disables registering.
 
 This is a table that is created empty. A startup \LUA\ script could fill this
 table with a number of settings that are read out by the executable after loading
-and executing the startup file.
+and executing the startup file. Watch out: some keys are different from \LUATEX,
+which is a side effect of a more granular and dynamic memory management.
 
-\starttabulate[|l|l|l|]
-\DB key                    \BC type   \BC default \NC \NR
+\starttabulate[|l|l|l|l|]
+\DB key                      \BC type         \BC default  \BC comment \NC \NR
 \TB
-\NC \type{max_strings}     \NC number \NC 100000  \NC \NR
-\NC \type{strings_free}    \NC number \NC    100  \NC \NR
-\NC \type{nest_size}       \NC number \NC     50  \NC \NR
-\NC \type{max_in_open}     \NC number \NC    100  \NC \NR
-\NC \type{param_size}      \NC number \NC     60  \NC \NR
-\NC \type{save_size}       \NC number \NC   5000  \NC \NR
-\NC \type{stack_size}      \NC number \NC    500  \NC \NR
-\NC \type{expand_depth}    \NC number \NC   1000  \NC \NR
-\NC \type{function_size}   \NC number \NC      0  \NC \NR
-\NC \type{error_line}      \NC number \NC     79  \NC \NR
-\NC \type{half_error_line} \NC number \NC     50  \NC \NR
-\NC \type{hash_extra}      \NC number \NC      0  \NC \NR
-\NC \type{formatname}      \NC string \NC         \NC \NR
-\NC \type{jobname}         \NC string \NC         \NC \NR
+\NC \type{buffersize}        \NC number/table \NC  1000000 \NC input buffer bytes \NC \NR
+\NC \type{filesize}          \NC number/table \NC     1000 \NC max number of open files \NC \NR
+\NC \type{fontsize}          \NC number/table \NC      250 \NC number of permitted fonts \NC \NR
+\NC \type{hashsize}          \NC number/table \NC   150000 \NC number of hash entries \NC \NR
+\NC \type{inputsize}         \NC number/table \NC    10000 \NC maximum input stack \NC \NR
+\NC \type{languagesize}      \NC number/table \NC      250 \NC number of permitted languages \NC \NR
+\NC \type{marksize}          \NC number/table \NC       50 \NC number of mark classes \NC \NR
+\NC \type{nestsize}          \NC number/table \NC     1000 \NC max depth of nesting \NC \NR
+\NC \type{nodesize}          \NC number/table \NC  1000000 \NC max node memory (various size) \NC \NR
+\NC \type{parametersize}     \NC number/table \NC    20000 \NC max size of parameter stack \NC \NR
+\NC \type{poolsize}          \NC number/table \NC 10000000 \NC max number of string bytes \NC \NR
+\NC \type{savesize}          \NC number/table \NC   100000 \NC mas size of save stack \NC \NR
+\NC \type{stringsize}        \NC number/table \NC   150000 \NC max number of strings \NC \NR
+\NC \type{tokensize}         \NC number/table \NC  1000000 \NC max token memory \NC \NR
+\ML
+\NC \type{expandsize}        \NC number/table \NC    10000 \NC max expansion nesting \NC \NR
+\NC \type{propertiessize}    \NC number       \NC        0 \NC initial size of node properties table \NC \NR
+\NC \type{functionsize}      \NC number       \NC        0 \NC initial size of \LUA\ functions table \NC \NR
+\NC \type{errorlinesize}     \NC number       \NC       79 \NC how much or an error is shown \NC \NR
+\NC \type{halferrorlinesize} \NC number       \NC       50 \NC idem \NC \NR
+\ML
+\NC \type{formatname}        \NC string       \NC          \NC \NC \NR
+\NC \type{jobname}           \NC string       \NC          \NC \NC \NR
 \LL
 \stoptabulate
 
 If no format name or jobname is given on the command line, the related keys will
-be tested first instead of simply quitting.
+be tested first instead of simply quitting. The statistics library has methods for
+tracking down how much memory is available and has been configured. The size parameters
+take a number (for the maximum allocated size) or a table with three possible keys:
+\type {size}, \type {plus} (for extra size) and step for the increment when more memory
+is needed. They all start out with a hard coded minimum and also have an hard coded maximum,
+the the configured size sits somewhere between these.
 
 \stopsection