Don't use a standalone (pandoc -s) document for expected.tex since

this filter targets document body only and pandoc does many things I
don't control in the preamble.

Author: chrisaga

column-div/Makefile

@@ -9,11 +9,11 @@ test_html: sample.md expected.html column-div.lua
 		| $(DIFF) expected.html -
 
 test_latex: sample.md expected.tex column-div.lua
-	@pandoc -s --lua-filter column-div.lua --to=latex $< \
+	@pandoc --lua-filter column-div.lua --to=latex $< \
 		| $(DIFF) expected.tex -
 
 expected.html: sample.md column-div.lua
 	pandoc -s --lua-filter column-div.lua --output $@ $<
 
 expected.tex: sample.md column-div.lua
-	pandoc -s --lua-filter column-div.lua --output $@ $<
+	pandoc --lua-filter column-div.lua --output $@ $<

column-div/expected.tex

@@ -1,58 +1,3 @@
-% Options for packages loaded elsewhere
-\PassOptionsToPackage{unicode}{hyperref}
-\PassOptionsToPackage{hyphens}{url}
-%
-\documentclass[
-]{article}
-\usepackage{lmodern}
-\usepackage{amssymb,amsmath}
-\usepackage{ifxetex,ifluatex}
-\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
-  \usepackage[T1]{fontenc}
-  \usepackage[utf8]{inputenc}
-  \usepackage{textcomp} % provide euro and other symbols
-\else % if luatex or xetex
-  \usepackage{unicode-math}
-  \defaultfontfeatures{Scale=MatchLowercase}
-  \defaultfontfeatures[\rmfamily]{Ligatures=TeX,Scale=1}
-\fi
-% Use upquote if available, for straight quotes in verbatim environments
-\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
-\IfFileExists{microtype.sty}{% use microtype if available
-  \usepackage[]{microtype}
-  \UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
-}{}
-\makeatletter
-\@ifundefined{KOMAClassName}{% if non-KOMA class
-  \IfFileExists{parskip.sty}{%
-    \usepackage{parskip}
-  }{% else
-    \setlength{\parindent}{0pt}
-    \setlength{\parskip}{6pt plus 2pt minus 1pt}}
-}{% if KOMA class
-  \KOMAoptions{parskip=half}}
-\makeatother
-\usepackage{xcolor}
-\IfFileExists{xurl.sty}{\usepackage{xurl}}{} % add URL line breaks if available
-\IfFileExists{bookmark.sty}{\usepackage{bookmark}}{\usepackage{hyperref}}
-\hypersetup{
-  pdftitle={Test},
-  hidelinks,
-  pdfcreator={LaTeX via pandoc}}
-\urlstyle{same} % disable monospaced font for URLs
-\setlength{\emergencystretch}{3em} % prevent overfull lines
-\providecommand{\tightlist}{%
-  \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
-\setcounter{secnumdepth}{-\maxdimen} % remove section numbering
-\usepackage{multicol}
-
-\title{Test}
-\author{}
-\date{}
-
-\begin{document}
-\maketitle
-
 \hypertarget{column-div-test}{%
 \section{column-div test}\label{column-div-test}}
 
@@ -120,5 +65,3 @@ \subsection{Columns in columns}\label{columns-in-columns}}
 \end{minipage}
 
 \end{multicols}
-
-\end{document}