From 58ef6a84ad11cea92cd3d886b5a95810cc4ea88c Mon Sep 17 00:00:00 2001
From: Norbert Preining <norbert@preining.info>
Date: Sat, 30 May 2020 03:01:22 +0000
Subject: CTAN sync 202005300301

---
 macros/luatex/generic/nodetree/nodetree.dtx | 2007 ++++-----------------------
 1 file changed, 236 insertions(+), 1771 deletions(-)

(limited to 'macros/luatex/generic/nodetree/nodetree.dtx')

diff --git a/macros/luatex/generic/nodetree/nodetree.dtx b/macros/luatex/generic/nodetree/nodetree.dtx
index 24416e17ce..5b18176843 100644
--- a/macros/luatex/generic/nodetree/nodetree.dtx
+++ b/macros/luatex/generic/nodetree/nodetree.dtx
@@ -1,6 +1,6 @@
 % \iffalse meta-comment
 %
-% Copyright (C) 2016 by Josef Friedrich <josef@friedrich.rocks>
+% Copyright (C) 2016-2020 by Josef Friedrich <josef@friedrich.rocks>
 % ----------------------------------------------------------------------
 % This work may be distributed and/or modified under the conditions of
 % the LaTeX Project Public License, either version 1.3 of this license
@@ -28,648 +28,8 @@
 %<package>\NeedsTeXFormat{LaTeX2e}[1999/12/01]
 %<package>\ProvidesPackage{nodetree}
 %<*package>
-    [2016/07/18 v1.2 Visualize node lists in a tree view]
+    [2020/05/29 v2.0 Visualize node lists in a tree view]
 %</package>
-%<*driver>
-\documentclass{ltxdoc}
-\usepackage{paralist,fontspec,graphicx,fancyvrb}
-\usepackage[
-  colorlinks=true,
-  linkcolor=red,
-  filecolor=red,
-  urlcolor=red,
-]{hyperref}
-%\usepackage{nodetree}
-\EnableCrossrefs
-\CodelineIndex
-\RecordChanges
-
-\setmonofont{DejaVu Sans Mono}
-
-\def\nodetreelua#1{\texttt{\scantokens{\catcode`\_=12\relax#1}}}
-
-\def\secref#1{(\rightarrow\ \ref{#1})}
-
-\newcommand{\tmpgraphics}[1]{
-  \noindent
-  \includegraphics[scale=0.4]{graphics/#1}
-}
-
-\DefineVerbatimEnvironment{code}{Verbatim}
-{
-  frame=single,
-  fontsize=\footnotesize,
-}
-
-\begin{document}
-
-\providecommand*{\url}{\texttt}
-\GetFileInfo{nodetree.dtx}
-\title{The \textsf{nodetree} package}
-\author{%
-  Josef Friedrich\\%
-  \url{josef@friedrich.rocks}\\%
-  \href{https://github.com/Josef-Friedrich/nodetree}{github.com/Josef-Friedrich/nodetree}%
-}
-\date{\fileversion~from \filedate}
-
-\maketitle
-
-\noindent
-\includegraphics[width=\linewidth]{graphics/packagename}
-
-\newpage
-
-\tableofcontents
-
-\newpage
-
-%-----------------------------------------------------------------------
-% Abstract
-%-----------------------------------------------------------------------
-
-\section{Abstract}
-
-|nodetree| is a development package that visualizes the structure of
-node lists. |nodetree| shows its debug informations in the consoles’
-output when you compile a Lua\TeX{} file. It uses a similar visual
-representation for node lists as the UNIX |tree| command uses for a
-folder structure.
-
-Node lists are the main building blocks of each document generated by
-the \TeX{} engine \emph{Lua\TeX}. The package |nodetree| doesn‘t change
-the rendered document. The tree view can only be seen when using a
-terminal to generate the document.
-
-|nodetree| is inspired by a
-\href{https://gist.github.com/pgundlach/556247}
-{gist from Patrick Gundlach}.
-
-%-----------------------------------------------------------------------
-% Usage
-%-----------------------------------------------------------------------
-
-\section{Usage}
-
-The package |nodetree| can be used both with Lua\TeX{} and Lua\LaTeX{}.
-You have to use both engines in a text console. Run for example
-|luatex luatex-test.tex| to list the nodes using Lua\TeX{}.
-
-\begin{code}
-\input{nodetree.tex}
-\nodetreeregister{postline}
-
-Lorem ipsum dolor.
-\bye
-\end{code}
-
-Or run |lualatex lualatex-test.tex| to show a node tree using
-Lua\LaTeX{}. In Lua\LaTeX{} you can omit |\nodetreeregister{postline}|.
-|\usepackage{nodetree}| registers automatically the
-|post_linebreak_filter|. If you don’t want debug the
-|post_linebreak_filter| use |\nodetreeunregister{postline}|.
-
-\begin{code}
-\documentclass{article}
-\usepackage{nodetree}
-
-\begin{document}
-Lorem ipsum dolor.
-\end{document}
-\end{code}
-
-%%
-% inside Lua code
-%%
-
-\subsection{Debug nodes inside Lua code}
-
-Use the Lua function |nodetree.analyze(head)| to debug nodes inside your
-Lua code. The following code snippet demonstrates the usage in Lua\TeX{}.
-|head| is the current node.
-
-\begin{code}
-\input{nodetree.tex}
-
-\directlua{
-  local test = function (head)
-    nodetree.analyze(head)
-  end
-  callback.register('post_linebreak_filter', test)
-}
-
-Lorem ipsum dolor.
-\bye
-\end{code}
-
-This example illustrates how the function has to be applied in
-Lua\LaTeX{}.
-
-\begin{code}
-\documentclass{article}
-\usepackage{nodetree}
-
-\begin{document}
-
-\directlua{
-  local test = function (head)
-    nodetree.analyze(head)
-  end
-  luatexbase.add_to_callback('post_linebreak_filter', test, 'test')
-}
-
-Lorem ipsum dolor.
-\end{document}
-\end{code}
-
-%-----------------------------------------------------------------------
-% Macros
-%-----------------------------------------------------------------------
-
-\section{Macros}
-
-%%
-% \nodetreeregister
-%%
-
-\subsection{\cmd{\nodetreeregister}}
-
-\DescribeMacro{\nodetreeregister}
-\cmd{\nodetreeregister}\marg{callbacks}: The argument \marg{callbacks}
-takes a comma separated list of callback aliases as described in
-\secref{sec:option-callback}.
-
-%%
-% \nodetreeunregister
-%%
-
-\subsection{\cmd{\nodetreeunregister}}
-
-\DescribeMacro{\nodetreeunregister}
-\cmd{\nodetreeunregister}\marg{callbacks}: The argument \marg{callbacks}
-takes a comma separated list of callback aliases as described in
-\secref{sec:option-callback}.
-
-%%
-% \nodetreeoption
-%%
-
-\subsection{\cmd{\nodetreeoption}}
-
-\DescribeMacro{\nodetreeoption}
-\cmd{\nodetreeoption}\oarg{option}\marg{value}: \secref{sec:options}
-This macro sets the option \oarg{option} to the value \marg{value}.
-
-%%
-% \nodetreeset
-%%
-
-\subsection{\cmd{\nodetreeset}}
-
-\DescribeMacro{\nodetreeset}
-\cmd{\nodetreeset}\marg{kv-options}:
-This macro can only be used in Lua\LaTeX{}. \marg{kv-options} are key
-value pairs.
-
-\begin{code}
-\nodetreeset{color=no,callbacks={hpack,vpack},verbosity=2}
-\end{code}
-
-%-----------------------------------------------------------------------
-% Options
-%-----------------------------------------------------------------------
-
-\section{Options}
-\label{sec:options}
-
-%%
-% callback
-%%
-
-\subsection{Option \texttt{callback}}
-\label{sec:option-callback}
-
-The option |callback| is the most important setting of the package. You
-have to specify one alias to select the |callback|. Because of the
-underscores the callback name contains it can not set by its technical
-name (\rightarrow{} Figure \ref{fig:callback}).
-
-This macros process callback options:
-\cmd{\nodetreeregister}\marg{callbacks},
-\cmd{\nodetreeunregister}\marg{callbacks},
-\cmd{\nodetreeset}\marg{callback=<callbacks>} and
-\cmd{\usepackage}\oarg{callback=<callbacks>}\marg{nodetree}.
-
-Use commas to specify mulitple callbacks. Avoid using whitespaces:
-
-\begin{code}
-\nodetreeregister{preline,line,postline}
-\end{code}
-
-Wrap your callback aliases in curly braces for the macro |\nodetreeset|:
-
-\begin{code}
-\nodetreeset{callback={preline,line,postline}}
-\end{code}
-
-The same applies for the macro |\usepackage|:
-
-\begin{code}
-\usepackage{callback={preline,line,postline}}
-\end{code}
-
-%%
-% Tabular callbacks
-%%
-
-\newcommand{\nodetreecallback}[3]{
-  \nodetreelua{#1} & \nodetreelua{#2} & \nodetreelua{#3} \\
-}
-
-\begin{figure}
-
-\noindent
-\begin{tabular}{lll}
-\textbf{Alias (short)} & \textbf{Alias (longer)} & \textbf{Callback} \\
-\nodetreecallback{contribute}{contributefilter}{contribute_filter}
-\nodetreecallback{buildpage}{buildpagefilter}{buildpage_filter}
-\nodetreecallback{preline}{prelinebreakfilter}{pre_linebreak_filter}
-\nodetreecallback{line}{linebreakfilter}{linebreak_filter}
-\nodetreecallback{append}{appendtovlistfilter}{append_to_vlist_filter}
-\nodetreecallback{postline}{postlinebreakfilter}{post_linebreak_filter}
-\nodetreecallback{hpack}{hpackfilter}{hpack_filter}
-\nodetreecallback{vpack}{vpackfilter}{vpack_filter}
-\nodetreecallback{hpackq}{hpackquality}{hpack_quality}
-\nodetreecallback{vpackq}{vpackquality}{vpack_quality}
-\nodetreecallback{process}{processrule}{process_rule}
-\nodetreecallback{preout}{preoutputfilter}{pre_output_filter}
-\nodetreecallback{hyph}{hyphenate}{hyphenate}
-\nodetreecallback{liga}{ligaturing}{ligaturing}
-\nodetreecallback{kern}{kerning}{kerning}
-\nodetreecallback{insert}{insertlocalpar}{insert_local_par}
-\nodetreecallback{mhlist}{mlisttohlist}{mlist_to_hlist}
-\end{tabular}
-
-\caption{The callback aliases}
-\label{fig:callback}
-\end{figure}
-
-%%
-% verbosity
-%%
-
-\subsection{Option \texttt{verbosity}}
-
-Higher integer values result in a more verbose output. The default value
-for this options is |1|. At the moment only verbosity level |2| is
-implemented.
-
-%%
-% color
-%%
-
-\subsection{Option \texttt{color}}
-
-The default option for |color| is |colored|. Use any other string (for
-example |none| or |no|) to disable the colored terminal output of the
-package.
-
-\begin{code}
-\usepackage[color=no]{nodetree}
-\end{code}
-
-%%
-% unit
-%%
-
-\subsection{Option \texttt{unit}}
-
-The option |unit| sets the length unit to display all length values of
-the nodes. The default option for |unit| is |pt|. See figure
-\ref{fig:fixed-units} and \ref{fig:relative-units} for possible values.
-
-\begin{figure}
-\begin{tabular}{lp{10cm}}
-\textbf{Unit} &
-\textbf{Description} \\
-
-pt &
-Point 1/72.27 inch. The conversion to metric units, to two decimal
-places, is 1 point = 2.85 mm = 28.45 cm. \\
-
-pc &
-Pica, 12 pt \\
-
-in &
-Inch, 72.27 pt \\
-
-bp &
-Big point, 1/72 inch. This length is the definition of a point in
-PostScript and many desktop publishing systems. \\
-
-cm &
-Centimeter \\
-
-mm &
-Millimeter \\
-
-dd &
-Didot point, 1.07 pt \\
-
-cc &
-Cicero, 12 dd \\
-
-sp &
-Scaled point, 1/65536 pt \\
-\end{tabular}
-\caption{Fixed units}
-\label{fig:fixed-units}
-\end{figure}
-
-\begin{figure}
-\begin{tabular}{lp{10cm}}
-\textbf{Unit} &
-\textbf{Description} \\
-
-ex &
-x-height of the current font \\
-
-em &
-Width of the capital letter M \\
-\end{tabular}
-\caption{Relative units}
-\label{fig:relative-units}
-\end{figure}
-
-%%
-% decimalplaces
-%%
-
-\subsection{Option \texttt{decimalplaces}}
-
-The options |decimalplaces| sets the number of decimal places for some
-node fields.
-
-\begin{code}
-\nodetreeoption[decimalplaces]{4}
-\end{code}
-
-gets
-
-\begin{code}
-├─GLYPH char: "a"; width: 5pt; height: 4.3055pt;
-\end{code}
-
-If |decimalplaces| is set to |0| only integer values are shown.
-
-\begin{code}
-├─GLYPH char: "a"; width: 5pt; height: 4pt;
-\end{code}
-
-%-----------------------------------------------------------------------
-% Visual tree structure
-%-----------------------------------------------------------------------
-
-\section{Visual tree structure}
-
-%%
-% Two different connections
-%%
-
-\subsection{Two different connections}
-
-Nodes in Lua\TeX{} are connected. The |nodetree| package distinguishs
-between the |list| and |field| connections.
-
-\begin{itemize}
- \item |list|: Nodes, which are double connected by |next| and
-       |previous| fields.
- \item |field|: Connections to nodes by other fields than |next| and
-       |previous| fields, e. g. |head|, |pre|.
-\end{itemize}
-
-%%
-% Unicode characters
-%%
-
-\subsection{Unicode characters to show the tree view}
-
-\renewcommand{\arraystretch}{1.5}
-
-The package |nodetree| uses the unicode box drawing symbols. Your
-default terminal font should contain this characters to obtain the tree
-view. Eight box drawing characters are necessary.
-
-\noindent
-\begin{tabular}{lcl}
-\textbf{Code} & \textbf{Character} & \textbf{Name} \\
-U+2500 & |─| & BOX DRAWINGS LIGHT HORIZONTAL \\
-U+2502 & |│| & BOX DRAWINGS LIGHT VERTICAL \\
-U+2514 & |└| & BOX DRAWINGS LIGHT UP AND RIGHT \\
-U+251C & |├| & BOX DRAWINGS LIGHT VERTICAL AND RIGHT \\
-U+2550 & |═| & BOX DRAWINGS DOUBLE HORIZONTAL \\
-U+2551 & |║| & BOX DRAWINGS DOUBLE VERTICAL \\
-U+255A & |╚| & BOX DRAWINGS DOUBLE UP AND RIGHT \\
-U+2560 & |╠| & BOX DRAWINGS DOUBLE VERTICAL AND RIGHT \\
-\end{tabular}
-
-For |list| connections \emph{light} characters are shown.
-
-\begin{code}
-│ │
-│ ├─list1
-│ └─list2
-└─list3
-\end{code}
-
-|field| connections are visialized by \emph{Double} characters.
-
-\begin{code}
-║ ║
-║ ╠═field1
-║ ╚═field2
-╚═field3
-\end{code}
-
-%-----------------------------------------------------------------------
-% Examples
-%-----------------------------------------------------------------------
-
-\newpage
-
-\section{Examples}
-
-%%
-% packagename
-%%
-
-\subsection{The node list of the package name}
-
-\begin{code}
-\documentclass{article}
-\usepackage{nodetree}
-\begin{document}
-nodetree
-\end{document}
-\end{code}
-
-\tmpgraphics{packagename}
-
-%%
-% math
-%%
-
-\newpage
-
-\subsection{The node list of a mathematical formula}
-
-\begin{code}
-\documentclass{article}
-\usepackage[callback={mhlist}]{nodetree}
-\begin{document}
-\[\left(a\right)\left[\frac{b}{a}\right]=a\,\]
-\end{document}
-\end{code}
-
-\tmpgraphics{math}
-
-%%
-% ligatures
-%%
-
-\newpage
-
-\subsection{The node list of the word \emph{Office}}
-
-The characters \emph{ffi} are deeply nested in a discretionary node.
-
-\begin{code}
-\documentclass{article}
-\usepackage{nodetree}
-\begin{document}
-Office
-\end{document}
-\end{code}
-
-\tmpgraphics{ligatures}
-
-%-----------------------------------------------------------------------
-% Index
-%-----------------------------------------------------------------------
-
-  \DocInput{nodetree.dtx}
-  \pagebreak
-  \PrintChanges
-  \pagebreak
-  \PrintIndex
-\end{document}
-%</driver>
-%<*readme>
-
-![nodetree](https://raw.githubusercontent.com/Josef-Friedrich/nodetree/master/graphics/packagename.png)
-
-# Abstract
-
-`nodetree` is a development package that visualizes the structure of
-node lists. `nodetree` shows its debug informations in the consoles’
-output when you compile a LuaTeX file. It uses a similar visual
-representation for node lists as the UNIX `tree` command uses for a
-folder structure.
-
-Node lists are the main building blocks of each document generated by
-the TeX engine LuaTeX. The package `nodetree` doesn‘t change
-the rendered document. The tree view can only be seen when using a
-terminal to generate the document.
-
-`nodetree` is inspired by a
-[gist from Patrick Gundlach](https://gist.github.com/pgundlach/556247).
-
-# License
-
-Copyright (C) 2016 by Josef Friedrich <josef@friedrich.rocks>
-------------------------------------------------------------------------
-This work may be distributed and/or modified under the conditions of
-the LaTeX Project Public License, either version 1.3 of this license
-or (at your option) any later version.  The latest version of this
-license is in:
-
-  http://www.latex-project.org/lppl.txt
-
-and version 1.3 or later is part of all distributions of LaTeX
-version 2005/12/01 or later.
-
-# CTAN
-
-Since July 2016 the cloze package is included in the Comprehensive TeX
-Archive Network (CTAN).
-
-* TeX archive: http://mirror.ctan.org/tex-archive/macros/luatex/generic/nodetree
-* Package page: http://www.ctan.org/pkg/nodetree
-
-# Repository
-
-https://github.com/Josef-Friedrich/nodetree
-
-# Installation
-
-Get source:
-
-    git clone git@github.com:Josef-Friedrich/nodetree.git
-    cd nodetree
-
-Compile:
-
-    make
-
-or manually:
-
-    luatex nodetree.ins
-    lualatex nodetree.dtx
-    makeindex -s gglo.ist -o nodetree.gls nodetree.glo
-    makeindex -s gind.ist -o nodetree.ind nodetree.idx
-    lualatex nodetree.dtx
-
-# Examples
-
-## The node list of the package name
-
-```latex
-\documentclass{article}
-\usepackage{nodetree}
-\begin{document}
-nodetree
-\end{document}
-```
-
-![nodetree](graphics/packagename.png)
-
-## The node list of a mathematical formula
-
-```latex
-\documentclass{article}
-\usepackage[callback={mhlist}]{nodetree}
-\begin{document}
-\[\left(a\right)\left[\frac{b}{a}\right]=a\,\]
-\end{document}
-```
-
-![nodetree](https://raw.githubusercontent.com/Josef-Friedrich/nodetree/master/graphics/math.png)
-
-## The node list of the word 'Office'
-
-The characters 'ffi' are deeply nested in a discretionary node.
-
-```latex
-\documentclass{article}
-\usepackage{nodetree}
-\begin{document}
-Office
-\end{document}
-```
-
-![nodetree](https://raw.githubusercontent.com/Josef-Friedrich/nodetree/master/graphics/ligatures.png)
-
-%</readme>
 % \fi
 %
 % \CheckSum{0}
@@ -695,6 +55,16 @@ Office
 % \changes{v1.0}{2016/07/07}{Inital release}
 % \changes{v1.1}{2016/07/13}{Fix the registration of same callbacks}
 % \changes{v1.2}{2016/07/18}{Fix difference between README.md in the upload and that from nodetree.dtx}
+% \changes{v2.0}{2020/05/29}{
+%  * Switch from lowercase macro names to PascalCase names for better readability.
+%  * The Lua code is no longer developed inside the DTX file, instead in a separate file named nodetree.lua.
+%  * Add a sub package named nodetree-embed.sty for embedding nodetree views into a \LaTeX{} document.
+%  * Add support for new node subtype names.
+%  * Add support for a new Lua\TeX{} node callback.
+%  * Add support for node properties.
+%  * Less verbose representation of node attributes.
+%  * Minor tree output adjustments.
+% }
 %
 % \DoNotIndex{\newcommand,\newenvironment,\def,\directlua}
 %
@@ -716,40 +86,68 @@ Office
 %    \begin{macrocode}
 \directlua{
   nodetree = require('nodetree')
-  nodetree.set_option('engine', 'luatex')
-  nodetree.set_default_options()
 }
 %    \end{macrocode}
 %
-% \begin{macro}{\nodetreeoption}
+% \begin{macro}{\NodetreeSetOption}
 %    \begin{macrocode}
-\def\nodetreeoption[#1]#2{
+\def\NodetreeSetOption[#1]#2{
   \directlua{
     nodetree.set_option('#1', '#2')
   }
 }
+\let\nodetreeoption\NodetreeSetOption
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NodetreeResetOption}
+%    \begin{macrocode}
+\def\NodetreeResetOption#1{
+  \NodetreeSetOption[#1]{%
+    \directlua{
+      tex.print(nodetree.get_default_option('#1'))
+    }%
+  }%
+}
 %    \end{macrocode}
 % \end{macro}
 %
-% \begin{macro}{\nodetreeregister}
+% \begin{macro}{\NodetreeReset}
 %    \begin{macrocode}
-\def\nodetreeregister#1{
+\def\NodetreeReset{
+  \NodetreeResetOption{callback}
+  \NodetreeResetOption{channel}
+  \NodetreeResetOption{color}
+  \NodetreeResetOption{decimalplaces}
+  \NodetreeResetOption{engine}
+  \NodetreeResetOption{unit}
+  \NodetreeResetOption{verbosity}
+}
+\let\nodetreereset\NodetreeReset
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NodetreeRegisterCallback}
+%    \begin{macrocode}
+\def\NodetreeRegisterCallback#1{
   \directlua{
     nodetree.set_option('callback', '#1')
     nodetree.register_callbacks()
   }
 }
+\let\nodetreeregister\NodetreeRegisterCallback
 %    \end{macrocode}
 % \end{macro}
 %
-% \begin{macro}{\nodetreeunregister}
+% \begin{macro}{\NodetreeUnregisterCallback}
 %    \begin{macrocode}
-\def\nodetreeunregister#1{
+\def\NodetreeUnregisterCallback#1{
   \directlua{
     nodetree.set_option('callback', '#1')
     nodetree.unregister_callbacks()
   }
 }
+\let\nodetreeunregister\NodetreeUnregisterCallback
 %    \end{macrocode}
 % \end{macro}
 %
@@ -765,9 +163,6 @@ Office
 %
 %    \begin{macrocode}
 \input{nodetree}
-\directlua{
-  nodetree.set_option('engine', 'lualatex')
-}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
@@ -777,1233 +172,303 @@ Office
 %    \begin{macrocode}
 \SetupKeyvalOptions{
   family=NT,
-  prefix=NT@
+  prefix=NTK@
 }
 %    \end{macrocode}
 %
 %    \begin{macrocode}
 \DeclareStringOption[term]{channel}
-\define@key{NT}{channel}[]{\nodetreeoption[channel]{#1}}
+\define@key{NT}{channel}[]{\NodetreeSetOption[channel]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
 \DeclareStringOption[postlinebreak]{callback}
-\define@key{NT}{callback}[]{\nodetreeoption[callback]{#1}}
+\define@key{NT}{callback}[]{\NodetreeSetOption[callback]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
 \DeclareStringOption[1]{verbosity}
-\define@key{NT}{verbosity}[]{\nodetreeoption[verbosity]{#1}}
+\define@key{NT}{verbosity}[]{\NodetreeSetOption[verbosity]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
 \DeclareStringOption[colored]{color}
-\define@key{NT}{color}[]{\nodetreeoption[color]{#1}}
+\define@key{NT}{color}[]{\NodetreeSetOption[color]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
 \DeclareStringOption[1]{unit}
-\define@key{NT}{unit}[]{\nodetreeoption[unit]{#1}}
+\define@key{NT}{unit}[]{\NodetreeSetOption[unit]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
 \DeclareStringOption[1]{decimalplaces}
-\define@key{NT}{decimalplaces}[]{\nodetreeoption[decimalplaces]{#1}}
+\define@key{NT}{decimalplaces}[]{\NodetreeSetOption[decimalplaces]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-\ProcessKeyvalOptions*
+\ProcessKeyvalOptions{NT}
 \directlua{
-  nodetree.set_default_options()
   nodetree.register_callbacks()
 }
 %    \end{macrocode}
 %
-% \begin{macro}{\nodetreeset}
+% \begin{macro}{\NodetreeSet}
 %    \begin{macrocode}
-\newcommand{\nodetreeset}[1]{\setkeys{nodetree}{#1}}
+\newcommand{\NodetreeSet}[1]{%
+  \setkeys{NT}{#1}%
+}
+\let\nodetreeset\NodetreeSet
 %    \end{macrocode}
 % \end{macro}
 %
 % \iffalse
 %</package>
-%<*luamain>
+%<*packageembed>
 % \fi
-%
-% \makeatletter
-% \c@CodelineNo 0 \relax
-% \makeatother
-%
-% \subsection{The file \tt{nodetree.lua}}
-%
-%    \begin{macrocode}
-local nodex = {}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-local tpl = {}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-local tree = {}
-%    \end{macrocode}
-%
-% Nodes in Lua\TeX{} are connected. The nodetree view distinguishs
-% between the |list| and |field| connections.
-%
-% \begin{itemize}
-%  \item |list|: Nodes, which are double connected by |next| and
-%        |previous| fields.
-%  \item |field|: Connections to nodes by other fields than |next| and
-%        |previous| fields, e. g. |head|, |pre|.
-% \end{itemize}
-%
-% The lua table named |tree.state| holds state values for the current
-% tree item.
-%
-% \begin{code}
-%  tree.state:
-%    - 1:
-%      - list: continue
-%      - field: stop
-%    - 2:
-%      - list: continue
-%      - field: stop
-% \end{code}
-%    \begin{macrocode}
-tree.state = {}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-local callbacks = {}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-local base = {}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-local options = {}
-%    \end{macrocode}
-%
-% \subsubsection{nodex --- Extend the node library}
-%
-% Get the node id form, e. g.:
-% \begin{code}
-% <node    nil <    172 >    nil : hlist 2>
-% \end{code}
-%    \begin{macrocode}
-function nodex.node_id(n)
-  return string.gsub(tostring(n), '^<node%s+%S+%s+<%s+(%d+).*', '%1')
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function nodex.subtype(n)
-  local typ = node.type(n.id)
-  local subtypes = {
-%    \end{macrocode}
-% \paragraph{hlist (0)}
-%    \begin{macrocode}
-    hlist = {
-      [0] = 'unknown',
-      [1] = 'line',
-      [2] = 'box',
-      [3] = 'indent',
-      [4] = 'alignment',
-      [5] = 'cell',
-      [6] = 'equation',
-      [7] = 'equationnumber',
-    },
-%    \end{macrocode}
-% \paragraph{vlist (1)}
-%    \begin{macrocode}
-    vlist = {
-      [0] = 'unknown',
-      [4] = 'alignment',
-      [5] = 'cell',
-    },
-%    \end{macrocode}
-% \paragraph{rule (2)}
-%    \begin{macrocode}
-    rule = {
-      [0] = 'unknown',
-      [1] = 'box',
-      [2] = 'image',
-      [3] = 'empty',
-      [4] = 'user',
-    },
-%    \end{macrocode}
-%
-% \noindent
-% Nodes without subtypes:
-% \begin{compactitem}
-% \item ins (3)
-% \item mark (4)
-% \end{compactitem}
-%    \begin{macrocode}
-%    \end{macrocode}
-% \paragraph{adjust (5)}
-%    \begin{macrocode}
-    adjust = {
-      [0] = 'normal',
-      [1] = 'pre',
-    },
-%    \end{macrocode}
-% \paragraph{boundary (6)}
-%    \begin{macrocode}
-    boundary = {
-      [0] = 'cancel',
-      [1] = 'user',
-      [2] = 'protrusion',
-      [3] = 'word',
-    },
-%    \end{macrocode}
-% \paragraph{disc (7)}
-%    \begin{macrocode}
-    disc  = {
-      [0] = 'discretionary',
-      [1] = 'explicit',
-      [2] = 'automatic',
-      [3] = 'regular',
-      [4] = 'first',
-      [5] = 'second',
-    },
-%    \end{macrocode}
-%
-% \noindent
-% Nodes without subtypes:
-% \begin{compactitem}
-% \item whatsit (8)
-% \item local\_par (9)
-% \item dir (10)
-% \end{compactitem}
-%
-% \paragraph{math (11)}
-%    \begin{macrocode}
-    math = {
-      [0] = 'beginmath',
-      [1] = 'endmath',
-    },
-%    \end{macrocode}
-% \paragraph{glue (12)}
-%    \begin{macrocode}
-    glue = {
-      [0]   = 'userskip',
-      [1]   = 'lineskip',
-      [2]   = 'baselineskip',
-      [3]   = 'parskip',
-      [4]   = 'abovedisplayskip',
-      [5]   = 'belowdisplayskip',
-      [6]   = 'abovedisplayshortskip',
-      [7]   = 'belowdisplayshortskip',
-      [8]   = 'leftskip',
-      [9]   = 'rightskip',
-      [10]  = 'topskip',
-      [11]  = 'splittopskip',
-      [12]  = 'tabskip',
-      [13]  = 'spaceskip',
-      [14]  = 'xspaceskip',
-      [15]  = 'parfillskip',
-      [16]  = 'mathskip',
-      [17]  = 'thinmuskip',
-      [18]  = 'medmuskip',
-      [19]  = 'thickmuskip',
-      [98]  = 'conditionalmathskip',
-      [99]  = 'muglue',
-      [100] = 'leaders',
-      [101] = 'cleaders',
-      [102] = 'xleaders',
-      [103] = 'gleaders',
-    },
-%    \end{macrocode}
-% \paragraph{kern (13)}
-%    \begin{macrocode}
-    kern = {
-      [0] = 'fontkern',
-      [1] = 'userkern',
-      [2] = 'accentkern',
-      [3] = 'italiccorrection',
-    },
-%    \end{macrocode}
-%
-% \noindent
-% Nodes without subtypes:
-% \begin{compactitem}
-% \item penalty (14)
-% \item unset (15)
-% \item style (16)
-% \item choice (17)
-% \end{compactitem}
-%
-% \paragraph{noad (18)}
 %    \begin{macrocode}
-    noad = {
-      [0] = 'ord',
-      [1] = 'opdisplaylimits',
-      [2] = 'oplimits',
-      [3] = 'opnolimits',
-      [4] = 'bin',
-      [5] = 'rel',
-      [6] = 'open',
-      [7] = 'close',
-      [8] = 'punct',
-      [9] = 'inner',
-      [10] = 'under',
-      [11] = 'over',
-      [12] = 'vcenter',
-    },
-%    \end{macrocode}
-% \paragraph{radical (19)}
-%    \begin{macrocode}
-    radical = {
-      [0] = 'radical',
-      [1] = 'uradical',
-      [2] = 'uroot',
-      [3] = 'uunderdelimiter',
-      [4] = 'uoverdelimiter',
-      [5] = 'udelimiterunder',
-      [6] = 'udelimiterover',
-    },
+\NeedsTeXFormat{LaTeX2e}[1994/06/01]
+\ProvidesPackage{nodetree-embed}
+  [2020/05/29 v2.0 Embed node trees into a LaTeX document]
 %    \end{macrocode}
 %
-% \noindent
-% Nodes without subtypes:
-% \begin{compactitem}
-% \item fraction (20)
-% \end{compactitem}
-%
-% \paragraph{accent (21)}
-%    \begin{macrocode}
-    accent = {
-      [0] = 'bothflexible',
-      [1] = 'fixedtop',
-      [2] = 'fixedbottom',
-      [3] = 'fixedboth',
-    },
-%    \end{macrocode}
-% \paragraph{fence (22)}
 %    \begin{macrocode}
-    fence = {
-      [0] = 'unset',
-      [1] = 'left',
-      [2] = 'middle',
-      [3] = 'right',
-    },
+\RequirePackage{xcolor,mdframed,expl3,xparse,fontspec}
 %    \end{macrocode}
 %
-% \noindent
-% Nodes without subtypes:
-% \begin{compactitem}
-% \item math\_char (23)
-% \item sub\_box (24)
-% \item sub\_mlist (25)
-% \item math\_text\_char (26)
-% \item delim (27)
-% \item margin\_kern (28)
-% \end{compactitem}
-%
-% \paragraph{glyph (29)}
 %    \begin{macrocode}
-    glyph = {
-      [0] = 'character',
-      [1] = 'ligature',
-      [2] = 'ghost',
-      [3] = 'left',
-      [4] = 'right',
-    },
-%    \end{macrocode}
-%
-% \noindent
-% Nodes without subtypes:
-% \begin{compactitem}
-% \item align\_record (30)
-% \item pseudo\_file (31)
-% \item pseudo\_line (32)
-% \item page\_insert (33)
-% \item split\_insert (34)
-% \item expr\_stack (35)
-% \item nested\_list (36)
-% \item span (37)
-% \item attribute (38)
-% \item glue\_spec (39)
-% \item attribute\_list (40)
-% \item temp (41)
-% \item align\_stack (42)
-% \item movement\_stack (43)
-% \item if\_stack (44)
-% \item unhyphenated (45)
-% \item hyphenated (46)
-% \item delta (47)
-% \item passive (48)
-% \item shape (49)
-% \end{compactitem}
-%    \begin{macrocode}
-  }
-  subtypes.whatsit = node.whatsits()
-  local out = ''
-  if subtypes[typ] and subtypes[typ][n.subtype] then
-    out = subtypes[typ][n.subtype]
-    if options.verbosity > 1 then
-      out = out .. tpl.type_id(n.subtype)
-    end
-    return out
-  else
-    return tostring(n.subtype)
-  end
-  assert(false)
-end
-%    \end{macrocode}
-%
-% \subsubsection{tpl --- Template function}
-%
-%    \begin{macrocode}
-function tpl.round(number)
-  local mult = 10^(options.decimalplaces or 0)
-  return math.floor(number * mult + 0.5) / mult
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.length(input)
-  input = tonumber(input)
-  input = input / tex.sp('1' .. options.unit)
-  return string.format('%g%s', tpl.round(input), options.unit)
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.fill(number, order, field)
-  if order ~= nil and order ~= 0 then
-    if field == 'stretch' then
-      out = '+'
-    else
-      out = '-'
-    end
-    return out .. string.format(
-      '%gfi%s', number / 2^16,
-      string.rep('l', order - 1)
-    )
-  else
-    return tpl.length(number)
-  end
-end
+\input{nodetree}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-tpl.node_colors = {
-  hlist = {'red', 'bright'},
-  vlist = {'green', 'bright'},
-  rule = {'blue', 'bright'},
-  ins = {'blue'},
-  mark = {'magenta'},
-  adjust = {'cyan'},
-  boundary = {'red', 'bright'},
-  disc = {'green', 'bright'},
-  whatsit = {'yellow', 'bright'},
-  local_par = {'blue', 'bright'},
-  dir = {'magenta', 'bright'},
-  math = {'cyan', 'bright'},
-  glue = {'magenta', 'bright'},
-  kern = {'green', 'bright'},
-  penalty = {'yellow', 'bright'},
-  unset = {'blue'},
-  style = {'magenta'},
-  choice = {'cyan'},
-  noad = {'red'},
-  radical = {'green'},
-  fraction = {'yellow'},
-  accent = {'blue'},
-  fence = {'magenta'},
-  math_char = {'cyan'},
-  sub_box = {'red', 'bright'},
-  sub_mlist = {'green', 'bright'},
-  math_text_char = {'yellow', 'bright'},
-  delim = {'blue', 'bright'},
-  margin_kern = {'magenta', 'bright'},
-  glyph = {'cyan', 'bright'},
-  align_record = {'red'},
-  pseudo_file = {'green'},
-  pseudo_line = {'yellow'},
-  page_insert = {'blue'},
-  split_insert = {'magenta'},
-  expr_stack = {'cyan'},
-  nested_list = {'red'},
-  span = {'green'},
-  attribute = {'yellow'},
-  glue_spec = {'magenta'},
-  attribute_list = {'cyan'},
-  temp = {'magenta'},
-  align_stack = {'red', 'bright'},
-  movement_stack = {'green', 'bright'},
-  if_stack = {'yellow', 'bright'},
-  unhyphenated = {'magenta', 'bright'},
-  hyphenated = {'cyan', 'bright'},
-  delta = {'red'},
-  passive = {'green'},
-  shape = {'yellow'},
+\RequirePackage{kvoptions}
+\SetupKeyvalOptions{
+  family=NTE,
+  prefix=NTEK@
 }
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function tpl.color_code(code)
-  return string.char(27) .. '[' .. tostring(code) .. 'm'
-end
-%    \end{macrocode}
-%
-% \begin{code}
-% local colors = {
-%     -- attributes
-%     reset = 0,
-%     clear = 0,
-%     bright = 1,
-%     dim = 2,
-%     underscore = 4,
-%     blink = 5,
-%     reverse = 7,
-%     hidden = 8,
-%
-%     -- foreground
-%     black = 30,
-%     red = 31,
-%     green = 32,
-%     yellow = 33,
-%     blue = 34,
-%     magenta = 35,
-%     cyan = 36,
-%     white = 37,
-%
-%     -- background
-%     onblack = 40,
-%     onred = 41,
-%     ongreen = 42,
-%     onyellow = 43,
-%     onblue = 44,
-%     onmagenta = 45,
-%     oncyan = 46,
-%     onwhite = 47,
-% }
-% \end{code}
-%    \begin{macrocode}
-function tpl.color(color, mode, background)
-  if options.color ~= 'colored' then
-    return ''
-  end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  local out = ''
-  local code = ''
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  if mode == 'bright' then
-    out = tpl.color_code(1)
-  elseif mode == 'dim' then
-    out = tpl.color_code(2)
-  end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  if not background then
-    if color == 'reset' then code = 0
-    elseif color == 'red' then code = 31
-    elseif color == 'green' then code = 32
-    elseif color == 'yellow' then code = 33
-    elseif color == 'blue' then code = 34
-    elseif color == 'magenta' then code = 35
-    elseif color == 'cyan' then code = 36
-    else code = 37 end
-  else
-    if color == 'black' then code = 40
-    elseif color == 'red' then code = 41
-    elseif color == 'green' then code = 42
-    elseif color == 'yellow' then code = 43
-    elseif color == 'blue' then code = 44
-    elseif color == 'magenta' then code = 45
-    elseif color == 'cyan' then code = 46
-    elseif color == 'white' then code = 47
-    else code = 40 end
-  end
-  return out .. tpl.color_code(code)
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.key_value(key, value)
-  local out = tpl.color('yellow') .. key .. ': '
-  if value then
-    out = out .. tpl.color('white') .. value .. '; '
-  end
-  return out .. tpl.color('reset')
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.char(input)
-  return string.format('%q', unicode.utf8.char(input))
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.type(type, id)
-  local out = tpl.color(
-    tpl.node_colors[type][1],
-    tpl.node_colors[type][2]
-    )
-    .. string.upper(type)
-  if options.verbosity > 1 then
-    out = out .. tpl.type_id(id)
-  end
-  return out .. tpl.color('reset')  .. ' '
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.callback_variable(variable_name, variable)
-  if variable ~= nil and variable ~= '' then
-    tpl.print(variable_name .. ': ' .. tostring(variable))
-  end
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.line(length)
-  if length == 'long' then
-    return '------------------------------------------'
-  else
-    return '-----------------------'
-  end
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.callback(callback_name, variables)
-  tpl.print('\n\n')
-  tpl.print('Callback: ' .. tpl.color('red', '', true) ..
-    callback_name .. tpl.color('reset')
-  )
-  if variables then
-    for name, value in pairs(variables) do
-      if value ~= nil and value ~= '' then
-        tpl.print('  - ' .. name .. ': ' .. tostring(value))
-      end
-    end
-  end
-  tpl.print(tpl.line('long'))
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.type_id(id)
-  return '[' .. tostring(id) .. ']'
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.branch(connection_type, connection_state, last)
-  local c = connection_type
-  local s = connection_state
-  local l = last
-  if c == 'list' and s == 'stop' and l == false then
-    return '  '
-  elseif c == 'field' and s == 'stop' and l == false then
-    return '  '
-  elseif c == 'list' and s == 'continue' and l == false then
-    return '│ '
-  elseif c == 'field' and s == 'continue' and l == false then
-    return '║ '
-  elseif c == 'list' and s == 'continue' and l == true then
-    return '├─'
-  elseif c == 'field' and s == 'continue' and l == true then
-    return '╠═'
-  elseif c == 'list' and s == 'stop' and l == true then
-    return '└─'
-  elseif c == 'field' and s == 'stop' and l == true then
-    return '╚═'
-  end
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.branches(level, connection_type)
-  local out = ''
-  for i = 1, level - 1  do
-    out = out .. tpl.branch('list', tree.state[i]['list'], false)
-    out = out .. tpl.branch('field', tree.state[i]['field'], false)
-  end
-%    \end{macrocode}
-% Format the last branches
-%    \begin{macrocode}
-  if connection_type == 'list' then
-    out = out .. tpl.branch('list', tree.state[level]['list'], true)
-  else
-    out = out .. tpl.branch('list', tree.state[level]['list'], false)
-    out = out .. tpl.branch('field', tree.state[level]['field'], true)
-  end
-  return out
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tpl.print(text)
-
-  if options.channel == 'log' then
-    if not log then
-      log = io.open(tex.jobname .. '_nodetree.log', 'a')
-    end
-    log:write(text, '\n')
-  else
-    print('  ' .. text)
-  end
-end
-%    \end{macrocode}
-%
-% \subsubsection{tree --- Build the node tree}
-%
-%    \begin{macrocode}
-function tree.format_field(head, field)
-  local out = ''
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  if not head[field] or head[field] == 0 then
-    return ''
-  end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  if options.verbosity < 2 and
-    -- glyph
-    field == 'font' or
-    field == 'left' or
-    field == 'right' or
-    field == 'uchyph' or
-    -- hlist
-    field == 'dir' or
-    field == 'glue_order' or
-    field == 'glue_sign' or
-    field == 'glue_set' or
-    -- glue
-    field == 'stretch_order' then
-    return ''
-  elseif options.verbosity < 3 and
-    field == 'prev' or
-    field == 'next' or
-    field == 'id'
-  then
-    return ''
-  end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  if field == 'prev' or field == 'next' then
-    out = nodex.node_id(head[field])
-  elseif field == 'subtype' then
-    out = nodex.subtype(head)
-  elseif
-    field == 'width' or
-    field == 'height' or
-    field == 'depth' or
-    field == 'kern' or
-    field == 'shift' then
-    out = tpl.length(head[field])
-  elseif field == 'char' then
-    out = tpl.char(head[field])
-  elseif field == 'glue_set' then
-    out = tpl.round(head[field])
-  elseif field == 'stretch' or field == 'shrink' then
-    out = tpl.fill(head[field], head[field .. '_order'], field)
-  else
-    out = tostring(head[field])
-  end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  return tpl.key_value(field, out)
-end
-%    \end{macrocode}
-%
-% |level| is a integer beginning with 1. The variable |connection_type|
-% is a string, which can be either |list| or |field|. The variable
-% |connection_state| is a string, which can be either |continue| or
-% |stop|.
-%    \begin{macrocode}
-function tree.set_state(level, connection_type, connection_state)
-  if not tree.state[level] then
-    tree.state[level] = {}
-  end
-  tree.state[level][connection_type] = connection_state
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tree.analyze_fields(fields, level)
-  local max = 0
-  local connection_state = ''
-  for _ in pairs(fields) do
-    max = max + 1
-  end
-  local count = 0
-  for field_name, recursion_node in pairs(fields) do
-    count = count + 1
-    if count == max then
-      connection_state = 'stop'
-    else
-      connection_state = 'continue'
-    end
-    tree.set_state(level, 'field', connection_state)
-    tpl.print(tpl.branches(level, 'field') .. tpl.key_value(field_name))
-    tree.analyze_list(recursion_node, level + 1)
-  end
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tree.analyze_node(head, level)
-  local connection_state
-  local out = ''
-  if head.next then
-    connection_state = 'continue'
-  else
-    connection_state = 'stop'
-  end
-  tree.set_state(level, 'list', connection_state)
-  out = tpl.branches(level, 'list')
-    .. tpl.type(node.type(head.id), head.id)
-  if options.verbosity > 1 then
-    out = out .. tpl.key_value('no', nodex.node_id(head))
-  end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  local fields = {}
-  for field_id, field_name in pairs(node.fields(head.id, head.subtype)) do
-    if field_name ~= 'next' and
-      field_name ~= 'prev' and
-      node.is_node(head[field_name]) then
-      fields[field_name] = head[field_name]
-    else
-      out = out .. tree.format_field(head, field_name)
-    end
-  end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  tpl.print(out)
-  tree.analyze_fields(fields, level)
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tree.analyze_list(head, level)
-  while head do
-    tree.analyze_node(head, level)
-    head = head.next
-  end
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function tree.analyze_callback(head)
-  tree.analyze_list(head, 1)
-  tpl.print(tpl.line('short') .. '\n')
-end
-%    \end{macrocode}
-%
-% \subsubsection{callbacks --- Callback wrapper}
-%
-%    \begin{macrocode}
-function callbacks.contribute_filter(extrainfo)
-  tpl.callback('contribute_filter', {extrainfo = extrainfo})
-  return true
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function callbacks.buildpage_filter(extrainfo)
-  tpl.callback('buildpage_filter', {extrainfo = extrainfo})
-  return true
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function callbacks.pre_linebreak_filter(head, groupcode)
-  tpl.callback('pre_linebreak_filter', {groupcode = groupcode})
-  tree.analyze_callback(head)
-  return true
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function callbacks.linebreak_filter(head, is_display)
-  tpl.callback('linebreak_filter', {is_display = is_display})
-  tree.analyze_callback(head)
-  return true
-end
-%    \end{macrocode}
-%
-% TODO: Fix return values, page output
-%    \begin{macrocode}
-function callbacks.append_to_vlist_filter(head, locationcode, prevdepth, mirrored)
-  local variables = {
-    locationcode = locationcode,
-    prevdepth = prevdepth,
-    mirrored = mirrored,
-  }
-  tpl.callback('append_to_vlist_filter', variables)
-  tree.analyze_callback(head)
-  return true
-end
+\directlua{
+  nodetree = require('nodetree')
+  nodetree.check_shell_escape()
+}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.post_linebreak_filter(head, groupcode)
-  tpl.callback('post_linebreak_filter', {groupcode = groupcode})
-  tree.analyze_callback(head)
-  return true
-end
+\define@key{NTE}{callback}[]{\NodetreeSetOption[callback]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.hpack_filter(head, groupcode, size, packtype, direction, attributelist)
-  local variables = {
-    groupcode = groupcode,
-    size = size,
-    packtype = packtype,
-    direction = direction,
-    attributelist = attributelist,
-  }
-  tpl.callback('hpack_filter', variables)
-  tree.analyze_callback(head)
-  return true
-end
+\DeclareStringOption[1]{verbosity}
+\define@key{NTE}{verbosity}[]{\NodetreeSetOption[verbosity]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.vpack_filter(head, groupcode, size, packtype, maxdepth, direction, attributelist)
-  local variables = {
-    groupcode = groupcode,
-    size = size,
-    packtype = packtype,
-    maxdepth = tpl.length(maxdepth),
-    direction = direction,
-    attributelist = attributelist,
-  }
-  tpl.callback('vpack_filter', variables)
-  tree.analyze_callback(head)
-  return true
-end
+\DeclareStringOption[colored]{color}
+\define@key{NTE}{color}[]{\NodetreeSetOption[color]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.hpack_quality(incident, detail, head, first, last)
-  local variables = {
-    incident = incident,
-    detail = detail,
-    first = first,
-    last = last,
-  }
-  tpl.callback('hpack_quality', variables)
-  tree.analyze_callback(head)
-end
+\DeclareStringOption[1]{unit}
+\define@key{NTE}{unit}[]{\NodetreeSetOption[unit]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.vpack_quality(incident, detail, head, first, last)
-  local variables = {
-    incident = incident,
-    detail = detail,
-    first = first,
-    last = last,
-  }
-  tpl.callback('vpack_quality', variables)
-  tree.analyze_callback(head)
-end
+\DeclareStringOption[1]{decimalplaces}
+\define@key{NTE}{decimalplaces}[]{\NodetreeSetOption[decimalplaces]{#1}}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.process_rule(head, width, height)
-  local variables = {
-    width = width,
-    height = height,
-  }
-  tpl.callback('process_rule', variables)
-  tree.analyze_callback(head)
-  return true
-end
+\DeclareStringOption[monokaisoda]{theme}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.pre_output_filter(head, groupcode, size, packtype, maxdepth, direction)
-  local variables = {
-    groupcode = groupcode,
-    size = size,
-    packtype = packtype,
-    maxdepth = maxdepth,
-    direction = direction,
-  }
-  tpl.callback('pre_output_filter', variables)
-  tree.analyze_callback(head)
-  return true
-end
+\DeclareStringOption[dark]{thememode}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.hyphenate(head, tail)
-  tpl.callback('hyphenate')
-  tpl.print('head:')
-  tree.analyze_callback(head)
-  tpl.print('tail:')
-  tree.analyze_callback(tail)
-end
+\DeclareStringOption[Ubuntu Mono]{font}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.ligaturing(head, tail)
-  tpl.callback('ligaturing')
-  tpl.print('head:')
-  tree.analyze_callback(head)
-  tpl.print('tail:')
-  tree.analyze_callback(tail)
-end
+\DeclareStringOption[\footnotesize]{fontsize}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.kerning(head, tail)
-  tpl.callback('kerning')
-  tpl.print('head:')
-  tree.analyze_callback(head)
-  tpl.print('tail:')
-  tree.analyze_callback(tail)
-end
+\DeclareBoolOption{showmarkup}
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-function callbacks.insert_local_par(local_par, location)
-  tpl.callback('insert_local_par', {location = location})
-  tree.analyze_callback(local_par)
-  return true
-end
+\ProcessKeyvalOptions{NTE}
 %    \end{macrocode}
 %
+% \begin{macro}{\NTE@colors}
 %    \begin{macrocode}
-function callbacks.mlist_to_hlist(head, display_type, need_penalties)
-  local variables = {
-    display_type = display_type,
-    need_penalties = need_penalties,
+\ExplSyntaxOn
+\def\NTE@colors{
+  \str_case_e:nn{\NTEK@theme}{
+    {bwdark}{
+      \definecolor{NTEblack}{gray}{0}
+      \definecolor{NTEred}{gray}{1}
+      \definecolor{NTEgreen}{gray}{1}
+      \definecolor{NTEyellow}{gray}{1}
+      \definecolor{NTEblue}{gray}{1}
+      \definecolor{NTEmagenta}{gray}{1}
+      \definecolor{NTEcyan}{gray}{1}
+      \definecolor{NTEwhite}{gray}{1}
+      \definecolor{NTEblackbright}{gray}{0}
+      \definecolor{NTEredbright}{gray}{1}
+      \definecolor{NTEgreenbright}{gray}{1}
+      \definecolor{NTEyellowbright}{gray}{1}
+      \definecolor{NTEbluebright}{gray}{1}
+      \definecolor{NTEmagentabright}{gray}{1}
+      \definecolor{NTEcyanbright}{gray}{1}
+      \definecolor{NTEwhitebright}{gray}{1}
+    }
+    {bwlight}{
+      \definecolor{NTEblack}{gray}{0}
+      \definecolor{NTEred}{gray}{0}
+      \definecolor{NTEgreen}{gray}{0}
+      \definecolor{NTEyellow}{gray}{0}
+      \definecolor{NTEblue}{gray}{0}
+      \definecolor{NTEmagenta}{gray}{0}
+      \definecolor{NTEcyan}{gray}{0}
+      \definecolor{NTEwhite}{gray}{1}
+      \definecolor{NTEblackbright}{gray}{0}
+      \definecolor{NTEredbright}{gray}{0}
+      \definecolor{NTEgreenbright}{gray}{0}
+      \definecolor{NTEyellowbright}{gray}{0}
+      \definecolor{NTEbluebright}{gray}{0}
+      \definecolor{NTEmagentabright}{gray}{0}
+      \definecolor{NTEcyanbright}{gray}{0}
+      \definecolor{NTEwhitebright}{gray}{1}
+    }
+    {monokaisoda}{
+      \definecolor{NTEblack}{HTML}{1a1a1a}
+      \definecolor{NTEred}{HTML}{f4005f}
+      \definecolor{NTEgreen}{HTML}{98e024}
+      \definecolor{NTEyellow}{HTML}{fa8419}
+      \definecolor{NTEblue}{HTML}{9d65ff}
+      \definecolor{NTEmagenta}{HTML}{f4005f}
+      \definecolor{NTEcyan}{HTML}{58d1eb}
+      \definecolor{NTEwhite}{HTML}{c4c5b5}
+      \definecolor{NTEblackbright}{HTML}{625e4c}
+      \definecolor{NTEredbright}{HTML}{f4005f}
+      \definecolor{NTEgreenbright}{HTML}{98e024}
+      \definecolor{NTEyellowbright}{HTML}{e0d561}
+      \definecolor{NTEbluebright}{HTML}{9d65ff}
+      \definecolor{NTEmagentabright}{HTML}{f4005f}
+      \definecolor{NTEcyanbright}{HTML}{58d1eb}
+      \definecolor{NTEwhitebright}{HTML}{f6f6ef}
+    }
   }
-  tpl.callback('mlist_to_hlist', variables)
-  tree.analyze_callback(head)
-  return node.mlist_to_hlist(head, display_type, need_penalties)
-end
-%    \end{macrocode}
-%
-% \subsubsection{base --- Exported base functions}
-%
-%    \begin{macrocode}
-function base.normalize_options()
-  options.verbosity = tonumber(options.verbosity)
-  options.decimalplaces = tonumber(options.decimalplaces)
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function base.set_default_options()
-  local defaults = {
-    verbosity = 1,
-    callback = 'postlinebreak',
-    engine = 'luatex',
-    color = 'colored',
-    decimalplaces = 2,
-    unit = 'pt',
-    channel = 'term',
+  \str_case_e:nn{\NTEK@thememode}{
+    {dark}{
+      \definecolor{NTEbackground}{named}{NTEblack}
+      \definecolor{NTEfont}{named}{NTEwhitebright}
+    }
+    {light}{
+      \definecolor{NTEbackground}{named}{NTEwhitebright}
+      \definecolor{NTEfont}{named}{NTEblack}
+    }
   }
-  if not options then
-    options = {}
-  end
-  for key, value in pairs(defaults) do
-    if not options[key] then
-      options[key] = value
-    end
-  end
-  base.normalize_options()
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function base.set_option(key, value)
-  if not options then
-    options = {}
-  end
-  options[key] = value
-  base.normalize_options()
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function base.get_option(key)
-  if not options then
-    options = {}
-  end
-  if options[key] then
-    return options[key]
-  end
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function base.get_callback_name(alias)
-  if alias == 'contribute' or alias == 'contributefilter' then
-    return 'contribute_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'buildpage' or alias == 'buildpagefilter' then
-    return 'buildpage_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'preline' or alias == 'prelinebreakfilter' then
-    return 'pre_linebreak_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'line' or alias == 'linebreakfilter' then
-    return 'linebreak_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'append' or alias == 'appendtovlistfilter' then
-    return 'append_to_vlist_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'postline' or alias == 'postlinebreakfilter' then
-    return 'post_linebreak_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'hpack' or alias == 'hpackfilter' then
-    return 'hpack_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'vpack' or alias == 'vpackfilter' then
-    return 'vpack_filter'
-%    \end{macrocode}
-% TODO: Fix: Unable to register callback
-%    \begin{macrocode}
-  elseif alias == 'hpackq' or alias == 'hpackquality' then
-    return 'hpack_quality'
-%    \end{macrocode}
-% TODO: Fix: Unable to register callback
-%    \begin{macrocode}
-  elseif alias == 'vpackq' or alias == 'vpackquality' then
-    return 'vpack_quality'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'process' or alias == 'processrule' then
-    return 'process_rule'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'preout' or alias == 'preoutputfilter' then
-    return 'pre_output_filter'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'hyph' or alias == 'hyphenate' then
-    return 'hyphenate'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'liga' or alias == 'ligaturing' then
-    return 'ligaturing'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'kern' or alias == 'kerning' then
-   return 'kerning'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'insert' or alias == 'insertlocalpar' then
-    return 'insert_local_par'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  elseif alias == 'mhlist' or alias == 'mlisttohlist' then
-    return 'mlist_to_hlist'
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-  else
-    return 'post_linebreak_filter'
-  end
-end
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-function base.register(cb)
-  if options.engine == 'lualatex' then
-    luatexbase.add_to_callback(cb, callbacks[cb], 'nodetree')
-  else
-    id, error = callback.register(cb, callbacks[cb])
-  end
-end
+}
+\ExplSyntaxOff
 %    \end{macrocode}
+% \end{macro}
 %
+% \begin{macro}{\NTE@fonts}
 %    \begin{macrocode}
-function base.register_callbacks()
-  for alias in string.gmatch(options.callback, '([^,]+)') do
-    base.register(base.get_callback_name(alias))
-  end
-end
+\def\NTE@fonts{
+  \bfseries%
+  \NTEK@fontsize%
+  \setmonofont{\NTEK@font}%
+  \ttfamily%
+  \setlength{\parindent}{0pt}%
+  \setlength{\parskip}{-0.9pt}%
+}
 %    \end{macrocode}
+% \end{macro}
 %
+% \begin{macro}{\NodetreeSet}
+% Same definition as in nodetree.sty. Only implement this command
+% if not already registers.
 %    \begin{macrocode}
-function base.unregister(cb)
-  if options.engine == 'lualatex' then
-    luatexbase.remove_from_callback(cb, 'nodetree')
-  else
-    id, error = callback.register(cb, nil)
-  end
-end
+\providecommand{\NodetreeSet}[1]{%
+  \setkeys{NTE}{#1}%
+}
 %    \end{macrocode}
+% \end{macro}
 %
 %    \begin{macrocode}
-function base.unregister_callbacks()
-  for alias in string.gmatch(options.callback, '([^,]+)') do
-    base.unregister(base.get_callback_name(alias))
-  end
-end
+\newenvironment{NodetreeEmbedView}[1][]{
+  \setkeys{NTE}{#1}
+  \NTE@colors
+  \begin{mdframed}[
+    linecolor=black,
+    backgroundcolor=NTEbackground,
+    fontcolor=NTEfont,
+  ]%
+  \NTE@fonts
+}{
+  \end{mdframed}%
+}
 %    \end{macrocode}
 %
-%    \begin{macrocode}
-function base.execute()
-  local c = base.get_callback()
-  if options.engine == 'lualatex' then
-    luatexbase.add_to_callback(c, callbacks.post_linebreak_filter, 'nodetree')
-  else
-    id, error = callback.register(c, callbacks.post_linebreak_filter)
-  end
-end
+% \begin{environment}{NodetreeEmbedEnv}
+%    \begin{macrocode}
+\NewDocumentEnvironment { NodetreeEmbedEnv } { O{} +b } {
+  \setkeys{NTE}{#1}
+  \ifNTEK@showmarkup
+    \noindent
+    \texttt{\detokenize{#2}}
+  \else
+  \fi
+  \NTE@colors
+  \begin{NodetreeEmbedView}
+    \directlua{
+      nodetree.compile_include('\luaescapestring{\unexpanded{#2}}')
+    }
+  \end{NodetreeEmbedView}
+}{}
+%    \end{macrocode}
+% \end{environment}
+
+% \begin{macro}{\NodetreeEmbedCmd}
+%    \begin{macrocode}
+\NewDocumentCommand { \NodetreeEmbedCmd } { O{} +v } {
+  \setkeys{NTE}{#1}
+  \ifNTEK@showmarkup
+    \noindent
+    \texttt{#2}
+  \else
+  \fi
+  \NTE@colors
+  \begin{NodetreeEmbedView}
+    \directlua{
+      nodetree.compile_include('\luaescapestring{\unexpanded{#2}}')
+    }
+  \end{NodetreeEmbedView}
+}
 %    \end{macrocode}
+% \end{macro}
 %
+% \begin{macro}{\NodetreeEmbedInput}
 %    \begin{macrocode}
-function base.analyze(head)
-  tpl.print('\n')
-  tree.analyze_list(head, 1)
-end
+\newcommand{\NodetreeEmbedInput}[2][]{
+  \setkeys{NTE}{#1}
+  \begin{NodetreeEmbedView}
+  \input{#2.nttex}
+  \end{NodetreeEmbedView}
+}
+\let\nodetreeterminalemulator\NodetreeEmbedInput
 %    \end{macrocode}
+% \end{macro}
 %
-%    \begin{macrocode}
-return base
-%    \end{macrocode}
+\endinput
 % \iffalse
-%</luamain>
+%</packageembed>
 % \fi
 %
 % \Finale
-- 
cgit v1.2.3

