Prepare for first upload

README.md

@@ -1,16 +1,14 @@
-# Automated LuaLaTeX math to MathML conversion
+# LuaMML: Automated LuaLaTeX math to MathML conversion
-**Highly experimental! At this point all interfaces may change without prior warning and many features aren't implemented yet. It is not ready for anything beyond simple experiments.**
-
 This is an attempt to implement automatic conversion of LuaLaTeX inline and display math expressions into MathML code to aid with tagging.
 It works best with `unicode-math`, but it can also be used with traditional math fonts if mappings to Unicode are provided.
 
 ## Installation
 Run `l3build install` to install `luamml` into your local `texmf` tree.
 
-## Demo
+## Usage
-Run `lualatex test_tex` to see all equations from [our example file](./test_tex.tex) converted into MathML. 
+Add `\usepackage[tracing]{luamml-demo}` to print MathML to the terminal or `\usepackage[files]{luamml-demo}` to generate separate files with MathML output.
+Alternatively it can be used with latex-lab to automatically integrate with tagging infrastucture.
 
-To test it on your own files, add `\usepackage[tracing]{luamml-demo}` (to print MathML to the terminal) or `\usepackage[files]{luamml-demo}` to generate separate files with MathML output.
+<!-- Also see a [`tagpdf` experiment using this to tag PDF formulas](https://github.com/u-fischer/tagpdf/blob/develop/experiments/exp-mathml-lua.tex). -->
-Also see a [`tagpdf` experiment using this to tag PDF formulas](https://github.com/u-fischer/tagpdf/blob/develop/experiments/exp-mathml-lua.tex).
 
-If you are very brave you can also try running `pdflatex test_pdf` and afterwards run `./pdfmml.lua test_pdf.lua` to get pdflatex formulas converted.
+<!-- If you are very brave you can also try running `pdflatex test_pdf` and afterwards run `./pdfmml.lua test_pdf.lua` to get pdflatex formulas converted. -->

build.lua

@@ -3,6 +3,8 @@ module = "luamml"
 tdsroot      = "lualatex"
 installfiles = { "luamml-*.lua", "*.sty" }
 sourcefiles  = { "luamml-*.lua", "*.sty", "*.dtx" }
+typesetsuppfiles = { "*.tex" }
+typesetsourcefiles = { "*.tex" }
 stdengine    = "luatex"
 unpackfiles  = { "*.dtx" }
 typesetexe   = "lualatex"

luamml-demo.sty

@@ -1,5 +1,5 @@
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesExplPackage{luamml-demo}{2021-06-16}{v0.0.1}{Reasonable default definitions for luamml}
+\ProvidesExplPackage{luamml-demo}{2024-08-14}{v0.1.0}{Reasonable default definitions for luamml}
 
 \sys_if_engine_luatex:F {
   \msg_new:nnn {luamml-demo} {pdftex-option-ignored} {Option~`#1'~is~being~ignored~in~pdfTeX~mode.}

luamml-patches-amsmath.sty

@@ -1,4 +1,4 @@
-\ProvidesExplPackage {luamml-patches-amsmath} {2021-04-23} {0.0.1-alpha}
+\ProvidesExplPackage {luamml-patches-amsmath} {2024-08-14} {0.1.0}
   {Feel free to add a description here}
 
 \lua_now:n { require'luamml-amsmath' }

luamml-patches-amstext.sty

@@ -1,4 +1,4 @@
-\ProvidesExplPackage {luamml-patches-amstext} {2021-04-23} {0.0.1-alpha}
+\ProvidesExplPackage {luamml-patches-amstext} {2024-08-14} {0.1.0}
   {Feel free to add a description here}
 
 \int_new:N \g__luamml_amsmath_text_struct_int

luamml-patches-array.sty

@@ -1,4 +1,4 @@
-\ProvidesExplPackage {luamml-patches-array} {2021-04-23} {0.0.1-alpha}
+\ProvidesExplPackage {luamml-patches-array} {2024-08-14} {0.1.0}
   {Feel free to add a description here}
 
 \lua_now:n { require'luamml-array' }

luamml-patches-kernel.sty

@@ -1,4 +1,4 @@
-\ProvidesExplPackage {luamml-patches-kernel} {2021-05-30} {0.0.1-alpha}
+\ProvidesExplPackage {luamml-patches-kernel} {2024-08-14} {0.1.0}
   {Feel free to add a description here}
 
 \cs_new:Npn \__luamml_kernel_phantom:nnn #1#2#3 {

luamml-patches-lab-math.sty

@@ -1,4 +1,4 @@
-\ProvidesExplPackage {luamml-patches-lab-math} {2021-05-30} {0.0.1-alpha}
+\ProvidesExplPackage {luamml-patches-lab-math} {2024-08-14} {0.1.0}
   {Feel free to add a description here}
 
 \AddToHook{begindocument} {

luamml-pdf-demo.sty

@@ -1,5 +1,5 @@
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesExplPackage{luamml-pdf-demo}{2021-06-16}{v0.0.1}{Reasonable default definitions for luamml-pdf}
+\ProvidesExplPackage{luamml-pdf-demo}{2024-08-14}{v0.1.0}{Reasonable default definitions for luamml-pdf}
 
 \RequirePackage{luamml-pdf}% Loading luamml-pdf is pretty much the point
 % \RequirePackage{amsmath,array}% May come back if the patches get ported

luamml.dtx

@@ -1,6 +1,6 @@
 % \iffalse meta-comment
 %
-%% Copyright (C) 2020-2021 by Marcel Krueger
+%% Copyright (C) 2020-2024 by Marcel Krueger
 %%
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -35,6 +35,7 @@
 \documentclass{l3doc}
 \usepackage{luamml}
 \usepackage{csquotes,luacolor}
+\MakeShortVerb{\|}
 \RecordChanges
 \begin{document}
 \tracingmathml2
@@ -48,13 +49,60 @@
 %</gobble>
 % \fi
 %
-% \title{The \pkg{luamml} package}
+% \GetFileInfo{luamml.dtx}
-%
+% \title{The \pkg{luamml} package%
+%   \thanks{This doument corresponds to \pkg{luamml}~\fileversion, dated~\filedate.}%
+% }
 % \author{Marcel Krüger}
 %
 % \maketitle
 %
 % \begin{documentation}
+% \section{Use case}
+% When generating output for the web or tagged output, mathematical content should often be represented as MathML.
+% This uses Lua\TeX~callbacks to automatically attempt to convert Lua\TeX~math mode output into MathML.
+%
+% \section{Usage}
+% The \pkg{luamml} package is designed to be used in automated ways by other packages and usually should not be invoked directly by the end user.
+% For experiments, \texttt{luamml-demo} is included which provides easier to use interfaces.
+%
+% Add in your preamble
+% \begin{verbatim}
+% \usepackage[files]{luamml-demo}
+% \end{verbatim}
+% This will trigger the output of individual files for each block of math output containing corresponding MathML.
+%
+% Alternatively
+% \begin{verbatim}
+% \usepackage[l3build]{luamml-demo}
+% \end{verbatim}
+% will generate a single file witha concatenation of all MathML blocks.
+%
+% For automated use, the \pkg{luamml} package can be included directly, followed by enclosing blocks which should generate files with \cmd{luamml_begin_single_file:} and \cmd{luamml_end_single_file:}.
+% The filename can be set with \cmd{luamml_set_filename:n}.
+%
+% \section{Improving MathML conversion}
+% When using constructs which do not automatically get converted in acceptable form, conversion hints can be provided with \cmd{luamml_annotate:en}.
+% This allows to provide a replacement MathML structure in Lua table form, for example
+% \begin{verbatim}
+% \luamml_annotate:en {
+%   nucleus = true,
+%   core = {[0] = 'mi', 'TeX'},
+% }{
+%   \hbox{\TeX}
+% }
+% \end{verbatim}
+% produces a |<mi>TeX</mi>| element in the output instead of trying to import \TeX~as a mathematical expression.
+% The table structure is explaned in an appendix.
+%
+% \section{Features \& Limitiations}
+% Currently all mathematical expressions which purely contain Unicode encoded math mode material without embedded non-math should get converted successfully.
+% Usage with non-Unicode math (\TeX's 8-bit math fonts) is highly experimental and undocumented.
+% Any attempt to build complicated structures by embedding arbitrary \TeX\ code in the middle of math mode needs to have a MathML replacement specified.
+% We try to automate more cases in the future.
+%
+% \appendix
+% \input{luamml-algorithm}
 % \end{documentation}
 %
 % \begin{implementation}
@@ -66,11 +114,11 @@
 %    \begin{macrocode}
 %<@@=luamml>
 %<*luatex>
-\ProvidesExplPackage {luamml} {2021-04-23} {0.0.1-alpha}
+\ProvidesExplPackage {luamml} {2024-08-14} {0.1.0}
   {Automatically generate presentational MathML from LuaTeX math expressions}
 %</luatex>
 %<*pdftex>
-\ProvidesExplPackage {luamml-pdf} {2021-05-31} {0.0.1-alpha}
+\ProvidesExplPackage {luamml-pdf} {2024-08-14} {0.1.0}
   {MathML generation for L̶u̶a̶pdfLaTeX}
 %</pdftex>
 %    \end{macrocode}

support/luamml-algorithm.tex

@@ -1,10 +1,7 @@
-\documentclass{article}
+\newcommand\Luamml{\pkg{Luamml}}
-\begin{document}
+\newcommand\luamml{\pkg{luamml}}
-\title{From math lists to MathML}
+\newcommand\xmltag[1]{\texttt{<#1>}}
-\subtitle{The algorithm in luamml}
+\section{\Luamml's representation of XML and MathML}
-\author{Marcel}
-\maketitle
-\section{General concepts}
 In the following I assume basic familiarity with both Lua\TeX's representation of math noads and MathML.
 
 \subsection{Representation of XML elements}
@@ -35,32 +32,32 @@ MathML knows the concept of \enquote{embellished operators}:
 \begin{blockquote}
   The precise definition of an \enquote{embellished operator} is:
   \begin{itemize}
-    \item an \tag{mo} element;
+    \item an \xmltag{mo} element;
-    \item or one of the elements \tag{msub}, \tag{msup}, \tag{msubsup}, \tag{munder}, \tag{mover}, \tag{munderover}, \tag{mmultiscripts}, \tag{mfrac}, or \tag{semantics} (§ 5.1 Annotation Framework), whose first argument exists and is an embellished operator;
+    \item or one of the elements \xmltag{msub}, \xmltag{msup}, \xmltag{msubsup}, \xmltag{munder}, \xmltag{mover}, \xmltag{munderover}, \xmltag{mmultiscripts}, \xmltag{mfrac}, or \xmltag{semantics} (§ 5.1 Annotation Framework), whose first argument exists and is an embellished operator;
-    \item or one of the elements \tag{mstyle}, \tag{mphantom}, or \tag{mpadded}, such that an mrow containing the same arguments would be an embellished operator;
+    \item or one of the elements \xmltag{mstyle}, \xmltag{mphantom}, or \xmltag{mpadded}, such that an mrow containing the same arguments would be an embellished operator;
-    \item or an \tag{maction} element whose selected sub-expression exists and is an embellished operator;
+    \item or an \xmltag{maction} element whose selected sub-expression exists and is an embellished operator;
-    \item or an \tag{mrow} whose arguments consist (in any order) of one embellished operator and zero or more space-like elements.
+    \item or an \xmltag{mrow} whose arguments consist (in any order) of one embellished operator and zero or more space-like elements.
   \end{itemize}
 \end{blockquote}
-For every embellished operator, MathML calls the \tag{mo} element defining the embellished operator the \enquote{core} of the embellished operator.
+For every embellished operator, MathML calls the \xmltag{mo} element defining the embellished operator the \enquote{core} of the embellished operator.
 
 \Luamml\ makes this slightly more general: Every expression is represented by a pair of two elements: The expression and it's core.
-The core is always a \tag{mo}, \tag{mi}, or \tag{mn}, \texttt{nil} or s special marker for space like elements.
+The core is always a \xmltag{mo}, \xmltag{mi}, or \xmltag{mn}, \texttt{nil} or s special marker for space like elements.
 
-If and only if the element is a embellished operator the core is a \tag{mo} element representing the core of the embellished operator.
+If and only if the element is a embellished operator the core is a \xmltag{mo} element representing the core of the embellished operator.
-The core is a \tag{mi} or a \tag{mn} element if and only if the element would be an embellished operator with this core if this element where a \tag{mo} element.
+The core is a \xmltag{mi} or a \xmltag{mn} element if and only if the element would be an embellished operator with this core if this element where a \xmltag{mo} element.
 The core is the special space like marker for space like elements. Otherwise the core is \texttt{nil}.
 
-\section{Translation of math noads}
+\subsection{Translation of math noads}
 A math lists can contain the following node types: noad, fence, fraction, radical, accent, style, choice, ins, mark, adjust, boundary, whatsit, penalty, disc, glue, and kern. The \enquote{noads}
 
-\subsection{Translation of kernel noads}
+\subsubsection{Translation of kernel noads}
 The math noads of this list contain nested kernel noads. So in the first step, we look into how kernel nodes are translated to math nodes.
 
-\subsubsection{\texttt{math_char} kernel noads}
+\paragraph{\texttt{math_char} kernel noads}
 First the family and character value in the \texttt{math_char} are used to lookup the Unicode character value of this \texttt{math_char}.
-(For \textt{unicode-math}, this is usually just the character value. Legacy maths has to be remapped based on the family.)
+(For \texttt{unicode-math}, this is usually just the character value. Legacy maths has to be remapped based on the family.)
-Then there are two cases: The digits \texttt{0} to \texttt{9} are mapped to \tag{mn} elements, everything else becomes a \tag{mi} element with \texttt{mathvariant} set to \texttt{normal}.
+Then there are two cases: The digits \texttt{0} to \texttt{9} are mapped to \xmltag{mn} elements, everything else becomes a \xmltag{mi} element with \texttt{mathvariant} set to \texttt{normal}.
 (The \texttt{mathvariant} value might get suppressed if the character defaults to mathvariant \texttt{normal}.)
 In either case, the \texttt{tex:family} attribute is set to the family number if it's not \texttt{0}.
 
@@ -73,13 +70,13 @@ The core is always set to the expression itself. E.g.\ the \texttt{math_char} ke
 }
 \end{verbatim}
 
-\subsection{\texttt{sub_box} kernel noads}
+\subsubsection{\texttt{sub_box} kernel noads}
 I am open to suggestions how to convert them properly.
 
-\subsection{\texttt{sub_mlist} kernel noads}
+\subsubsection{\texttt{sub_mlist} kernel noads}
-The inner list is converted as a \tag{mrow} element, with the core being the core of the \tag{mrow} element. See the rules for this later.
+The inner list is converted as a \xmltag{mrow} element, with the core being the core of the \xmltag{mrow} element. See the rules for this later.
 
-\subsection{\texttt{delim} kernel noads}
+\subsubsection{\texttt{delim} kernel noads}
 If the \texttt{small_char} is zero, these get converted as space like elements of the form
 \begin{verbatim}
 {[0] = 'mspace',
@@ -89,15 +86,13 @@ If the \texttt{small_char} is zero, these get converted as space like elements o
 where 1.196 is replaced by the current value of \verb+\nulldelimiterspace+ converted to \texttt{bp}.
 
 Otherwise the same rules as for \texttt{math_char} apply,
-except that instead of \texttt{mi} or \tag{mn} elements,
+except that instead of \texttt{mi} or \xmltag{mn} elements,
 \texttt{mo} elements are generated,
 \texttt{mathvariant} is never set,
 \texttt{stretchy} is set to \texttt{true} if the operator is not on the list of default stretchy operators in the MathML specification 
 nd \texttt{lspace} and \texttt{rspace} attributes are set to zero.
 
-\subsection{\texttt{acc} kernel noads}
+\subsubsection{\texttt{acc} kernel noads}
 Depending on the surrounding element containing the \texttt{acc} kernel noad, it is either stretchy or not.
 If it's stretchy, the same rules as for \texttt{delim} apply, except that \texttt{lspace} and \texttt{rspace} are not set.
-Otherwise the \textt{stretchy} attribute is set to false if the operator is on the list of default stretchy operators.
+Otherwise the \texttt{stretchy} attribute is set to false if the operator is on the list of default stretchy operators.
-
-\end{document}

testfiles-lua/cases.mlr

@@ -1,10 +1,10 @@
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mi tex:family="1">𝑎</mi>
+  <mi>𝑎</mi>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
-  <mi tex:family="1">𝑏</mi>
+  <mi>𝑏</mi>
 </math>
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow tex:class="inner">
+  <mrow>
     <mo fence="true" lspace="0" rspace="0" symmetric="true">(</mo>
     <mspace width="-4.981pt" />
     <mpadded lspace="+4.981pt" width="+9.963pt">
@@ -47,9 +47,9 @@
     <mspace width="-4.981pt" />
     <mo fence="true" lspace="0" rspace="0" symmetric="true">)</mo>
   </mrow>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
-  <mrow tex:class="inner">
+  <mrow>
-    <mo fence="true" lspace="0" rspace="0" symmetric="true" tex:family="2">{</mo>
+    <mo fence="true" lspace="0" rspace="0" symmetric="true">{</mo>
     <mpadded lspace="+4.981pt" width="+9.963pt">
       <mtable>
         <mtr>
@@ -58,10 +58,10 @@
           </mtd>
           <mtd columnalign="left">
             <mtext>if&#160; 
-            <math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+            <math xmlns="http://www.w3.org/1998/Math/MathML">
-              <mi tex:family="1">𝑎</mi>
+              <mi>𝑎</mi>
-              <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+              <mo lspace="0.278em" rspace="0.278em">=</mo>
-              <mi tex:family="1">𝑏</mi>
+              <mi>𝑏</mi>
             </math></mtext>
           </mtd>
         </mtr>
@@ -78,76 +78,68 @@
     <mspace width="1.196pt" />
   </mrow>
 </math>
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
-  <mi tex:family="1">𝑥</mi>
+  <mi>𝑥</mi>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mfrac>
     <mrow>
-      <mo lspace="0" rspace="0.222em" tex:class="bin" tex:family="2">−</mo>
+      <mo lspace="0" rspace="0.222em">−</mo>
-      <mi tex:family="1">𝑏</mi>
+      <mi>𝑏</mi>
-      <mo lspace="0.222em" rspace="0.222em" tex:class="bin" tex:family="2">±</mo>
+      <mo lspace="0.222em" rspace="0.222em">±</mo>
       <msqrt>
         <mrow>
           <msup>
-            <mi tex:family="1">𝑏</mi>
+            <mi>𝑏</mi>
             <mn>2</mn>
           </msup>
-          <mo lspace="0.222em" rspace="0.222em" tex:class="bin" tex:family="2">−</mo>
+          <mo lspace="0.222em" rspace="0.222em">−</mo>
           <mn>4</mn>
-          <mi tex:family="1">𝑎</mi>
+          <mi>𝑎</mi>
-          <mi tex:family="1">𝑐</mi>
+          <mi>𝑐</mi>
         </mrow>
       </msqrt>
     </mrow>
     <mrow>
       <mn>2</mn>
-      <mi tex:family="1">𝑎</mi>
+      <mi>𝑎</mi>
     </mrow>
   </mfrac>
-  <mo lspace="0" rspace="0" tex:class="ord" tex:family="1">.</mo>
+  <mo lspace="0" rspace="0">.</mo>
 </math>
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mi tex:family="1">𝑏</mi>
+  <mi>𝑏</mi>
 </math>
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
   <munder>
-    <mo lspace="0" movablelimits="true" rspace="0.167em" tex:class="opdisplaylimits" tex:family="3">∑</mo>
+    <mo lspace="0" movablelimits="true" rspace="0.167em">∑</mo>
-    <mi tex:family="1">𝑎</mi>
+    <mi>𝑎</mi>
   </munder>
   <munder>
-    <mi tex:family="1">𝑐</mi>
+    <mi>𝑐</mi>
     <mo>_</mo>
   </munder>
   <mover>
-    <mi tex:family="1">𝑏</mi>
+    <mi>𝑏</mi>
     <mo stretchy="false">_</mo>
   </mover>
   <msup>
-    <mi tex:family="1">𝑐</mi>
+    <mi>𝑐</mi>
-    <mi mathvariant="normal" tex:family="2">′</mi>
+    <mi mathvariant="normal">′</mi>
   </msup>
 </math>
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow tex:class="opnolimits">
+  <mi mathvariant="normal">sin</mi>
-    <mi mathvariant="normal">s</mi>
+  <mo lspace="0" rspace="0" stretchy="false">(</mo>
-    <mi mathvariant="normal">i</mi>
+  <mi>𝑥</mi>
-    <mi mathvariant="normal">n</mi>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  </mrow>
+  <mo lspace="0.222em" rspace="0.222em">−</mo>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mi mathvariant="normal">sin</mi>
-  <mi tex:family="1">𝑥</mi>
+  <mo lspace="0" rspace="0" stretchy="false">(</mo>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mi>𝑥</mi>
-  <mo lspace="0.222em" rspace="0.222em" tex:class="bin" tex:family="2">−</mo>
+  <mo lspace="0.222em" rspace="0.222em">+</mo>
-  <mrow tex:class="opnolimits">
-    <mi mathvariant="normal">s</mi>
-    <mi mathvariant="normal">i</mi>
-    <mi mathvariant="normal">n</mi>
-  </mrow>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="open">(</mo>
-  <mi tex:family="1">𝑥</mi>
-  <mo lspace="0.222em" rspace="0.222em" tex:class="bin">+</mo>
   <mn>2</mn>
-  <mi tex:family="1">𝜋</mi>
+  <mi>𝜋</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mn>0</mn>
 </math>

testfiles-lua/test_xml.mlr

@@ -1,27 +1,27 @@
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
   <mstyle displaystyle="true" scriptlevel="0">
     <mi>𝑎</mi>
-    <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+    <mo lspace="0.278em" rspace="0.278em">=</mo>
     <mi>𝑏</mi>
   </mstyle>
 </math>
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
   <mi>𝑎</mi>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mi>𝑏</mi>
 </math>
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
   <mi>𝑎</mi>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mi>𝑏</mi>
 </math>
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
   <mi>𝑎</mi>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mi>𝑏</mi>
 </math>
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow tex:class="inner">
+  <mrow>
     <mo fence="true" lspace="0" rspace="0" symmetric="true">(</mo>
     <mspace width="-4.981pt" />
     <mpadded lspace="+4.981pt" width="+9.963pt">
@@ -64,8 +64,8 @@
     <mspace width="-4.981pt" />
     <mo fence="true" lspace="0" rspace="0" symmetric="true">)</mo>
   </mrow>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
-  <mrow tex:class="inner">
+  <mrow>
     <mo fence="true" lspace="0" rspace="0" symmetric="true">{</mo>
     <mpadded lspace="+4.981pt" width="+9.963pt">
       <mtable>
@@ -75,12 +75,12 @@
           </mtd>
           <mtd columnalign="left">
             <mtext>if&#160; 
-            <math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+            <math xmlns="http://www.w3.org/1998/Math/MathML">
               <mi>𝑎</mi>
-              <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+              <mo lspace="0.278em" rspace="0.278em">=</mo>
               <mi>𝑏</mi>
             </math></mtext>
-            <mi intent="@ignore" />
+            <mi />
           </mtd>
         </mtr>
         <mtr>
@@ -89,7 +89,7 @@
           </mtd>
           <mtd columnalign="left">
             <mtext>else</mtext>
-            <mi intent="@ignore" />
+            <mi />
           </mtd>
         </mtr>
       </mtable>
@@ -97,21 +97,21 @@
     <mspace width="1.196pt" />
   </mrow>
 </math>
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
   <mi>𝑥</mi>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mfrac>
     <mrow>
-      <mo lspace="0" rspace="0.222em" tex:class="bin">−</mo>
+      <mo lspace="0" rspace="0.222em">−</mo>
       <mi>𝑏</mi>
-      <mo lspace="0.222em" rspace="0.222em" tex:class="bin">±</mo>
+      <mo lspace="0.222em" rspace="0.222em">±</mo>
       <msqrt>
         <mrow>
           <msup>
             <mi>𝑏</mi>
             <mn>2</mn>
           </msup>
-          <mo lspace="0.222em" rspace="0.222em" tex:class="bin">−</mo>
+          <mo lspace="0.222em" rspace="0.222em">−</mo>
           <mn>4</mn>
           <mi>𝑎</mi>
           <mi>𝑐</mi>
@@ -123,11 +123,11 @@
       <mi>𝑎</mi>
     </mrow>
   </mfrac>
-  <mo lspace="0" rspace="0" tex:class="ord">.</mo>
+  <mo lspace="0" rspace="0">.</mo>
 </math>
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
   <munder>
-    <mo lspace="0" movablelimits="true" rspace="0.167em" tex:class="opdisplaylimits">∑</mo>
+    <mo lspace="0" movablelimits="true" rspace="0.167em">∑</mo>
     <mi>𝑎</mi>
   </munder>
   <munder>
@@ -143,7 +143,7 @@
     <mi mathvariant="normal">′</mi>
   </msup>
 </math>
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
   <mtable columnalign="right left right left" columnspacing="0 .8em 0" displaystyle="true">
     <mlabeledtr>
       <mtd>
@@ -155,8 +155,8 @@
         <mi>𝑐</mi>
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
-        <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+        <mo lspace="0.278em" rspace="0.278em">=</mo>
         <mi>𝑑</mi>
         <mi>𝑒</mi>
         <mi>𝑓</mi>
@@ -165,15 +165,15 @@
         <msup>
           <mi>𝑒</mi>
           <mrow>
-            <mi mathvariant="normal" tex:family="4">i</mi>
+            <mi mathvariant="normal">i</mi>
             <mi>𝜋</mi>
           </mrow>
         </msup>
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
-        <mo lspace="0.278em" rspace="0" tex:class="rel">=</mo>
+        <mo lspace="0.278em" rspace="0">=</mo>
-        <mo lspace="0.278em" rspace="0" tex:class="ord">−</mo>
+        <mo lspace="0.278em" rspace="0">−</mo>
         <mn>1</mn>
       </mtd>
     </mlabeledtr>
@@ -184,20 +184,20 @@
       <mtd>
         <mo fence="true" lspace="0" maxsize="17.861pt" minsize="17.861pt" rspace="0" symmetric="true">(</mo>
         <mn>1</mn>
-        <mo lspace="0.222em" rspace="0.222em" tex:class="bin">+</mo>
+        <mo lspace="0.222em" rspace="0.222em">+</mo>
         <mn>2</mn>
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
-        <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+        <mo lspace="0.278em" rspace="0.278em">=</mo>
         <mn>3</mn>
         <mo fence="true" lspace="0" maxsize="17.861pt" minsize="17.861pt" rspace="0" symmetric="true">)</mo>
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
       </mtd>
     </mlabeledtr>
     <mlabeledtr>
@@ -208,38 +208,30 @@
         <mn>5</mn>
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
       </mtd>
       <mtd>
-        <mi intent="@ignore" />
+        <mi />
       </mtd>
     </mlabeledtr>
   </mtable>
 </math>
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow tex:class="opnolimits">
+  <mi mathvariant="normal">sin</mi>
-    <mi mathvariant="normal" tex:family="4">s</mi>
+  <mo lspace="0" rspace="0" stretchy="false">(</mo>
-    <mi mathvariant="normal" tex:family="4">i</mi>
-    <mi mathvariant="normal" tex:family="4">n</mi>
-  </mrow>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="open">(</mo>
   <mi>𝑥</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0.222em" rspace="0.222em" tex:class="bin">−</mo>
+  <mo lspace="0.222em" rspace="0.222em">−</mo>
-  <mrow tex:class="opnolimits">
+  <mi mathvariant="normal">sin</mi>
-    <mi mathvariant="normal" tex:family="4">s</mi>
+  <mo lspace="0" rspace="0" stretchy="false">(</mo>
-    <mi mathvariant="normal" tex:family="4">i</mi>
-    <mi mathvariant="normal" tex:family="4">n</mi>
-  </mrow>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="open">(</mo>
   <mi>𝑥</mi>
-  <mo lspace="0.222em" rspace="0.222em" tex:class="bin">+</mo>
+  <mo lspace="0.222em" rspace="0.222em">+</mo>
   <mn>2</mn>
   <mi>𝜋</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mn>0</mn>
 </math>

testfiles-pdf/test.mlr

@@ -1,51 +1,51 @@
-<math display="block" xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
-  <mi mathvariant="normal" tex:family="2">∅</mi>
+  <mi mathvariant="normal">∅</mi>
-  <mo lspace="0.278em" rspace="0" tex:class="rel">⊧</mo>
+  <mo lspace="0.278em" rspace="0">⊧</mo>
-  <mo lspace="0.278em" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mo lspace="0.278em" rspace="0" stretchy="false">(</mo>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mo lspace="0" rspace="0" stretchy="false">(</mo>
-  <mi tex:family="1">𝑝</mi>
+  <mi>𝑝</mi>
-  <mo lspace="0.278em" rspace="0.278em" stretchy="false" tex:class="rel" tex:family="2">⇒</mo>
+  <mo lspace="0.278em" rspace="0.278em" stretchy="false">⇒</mo>
-  <mi tex:family="1">𝑞</mi>
+  <mi>𝑞</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0.278em" rspace="0" stretchy="false" tex:class="rel" tex:family="2">⇒</mo>
+  <mo lspace="0.278em" rspace="0" stretchy="false">⇒</mo>
-  <mo lspace="0.278em" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mo lspace="0.278em" rspace="0" stretchy="false">(</mo>
-  <mi tex:family="1">𝑞</mi>
+  <mi>𝑞</mi>
-  <mo lspace="0.278em" rspace="0.278em" stretchy="false" tex:class="rel" tex:family="2">⇒</mo>
+  <mo lspace="0.278em" rspace="0.278em" stretchy="false">⇒</mo>
-  <mi tex:family="1">𝑟</mi>
+  <mi>𝑟</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0.278em" rspace="0" stretchy="false" tex:class="rel" tex:family="2">⇒</mo>
+  <mo lspace="0.278em" rspace="0" stretchy="false">⇒</mo>
-  <mo lspace="0.278em" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mo lspace="0.278em" rspace="0" stretchy="false">(</mo>
-  <mi tex:family="1">𝑝</mi>
+  <mi>𝑝</mi>
-  <mo lspace="0.278em" rspace="0" stretchy="false" tex:class="rel" tex:family="2">⇒</mo>
+  <mo lspace="0.278em" rspace="0" stretchy="false">⇒</mo>
-  <mo lspace="0.278em" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mo lspace="0.278em" rspace="0" stretchy="false">(</mo>
-  <mi tex:family="1">𝑞</mi>
+  <mi>𝑞</mi>
-  <mo lspace="0.278em" rspace="0.278em" stretchy="false" tex:class="rel" tex:family="2">⇒</mo>
+  <mo lspace="0.278em" rspace="0.278em" stretchy="false">⇒</mo>
-  <mi tex:family="1">𝑟</mi>
+  <mi>𝑟</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
 </math>
-<math xmlns:tex="http://typesetting.eu/2021/LuaMathML" xmlns="http://www.w3.org/1998/Math/MathML">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow tex:class="opnolimits">
+  <mrow>
     <mi mathvariant="normal">s</mi>
     <mi mathvariant="normal">i</mi>
     <mi mathvariant="normal">n</mi>
   </mrow>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mo lspace="0" rspace="0" stretchy="false">(</mo>
-  <mi tex:family="1">𝑥</mi>
+  <mi>𝑥</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0.222em" rspace="0.222em" tex:class="bin" tex:family="2">−</mo>
+  <mo lspace="0.222em" rspace="0.222em">−</mo>
-  <mrow tex:class="opnolimits">
+  <mrow>
     <mi mathvariant="normal">s</mi>
     <mi mathvariant="normal">i</mi>
     <mi mathvariant="normal">n</mi>
   </mrow>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="open">(</mo>
+  <mo lspace="0" rspace="0" stretchy="false">(</mo>
-  <mi tex:family="1">𝑥</mi>
+  <mi>𝑥</mi>
-  <mo lspace="0.222em" rspace="0.222em" tex:class="bin">+</mo>
+  <mo lspace="0.222em" rspace="0.222em">+</mo>
   <mn>2</mn>
-  <mi tex:family="1">𝜋</mi>
+  <mi>𝜋</mi>
-  <mo lspace="0" rspace="0" stretchy="false" tex:class="close">)</mo>
+  <mo lspace="0" rspace="0" stretchy="false">)</mo>
-  <mo lspace="0.278em" rspace="0.278em" tex:class="rel">=</mo>
+  <mo lspace="0.278em" rspace="0.278em">=</mo>
   <mn>0</mn>
 </math>