Move latex code from Lua filter to Latex template. (#264)

This allows the behavior of these filters to be customized by tweaking
the Latex template.

This change also removes some dead code as there was no way to exercise
a certain filter.

Author: bluegate010

build.sh

@@ -563,10 +563,6 @@ cat <<- EOF > ./.puppeteer.json
 }
 EOF
 
-if [ "${BLOCK_QUOTES_ARE_INFORMATIVE_TEXT}" == "yes" ]; then
-	EXTRA_PANDOC_OPTIONS+=" --lua-filter=informative-quote-blocks.lua"
-fi
-
 # Use sed to perform some basic fixups on certain input files.
 #
 # If the second argument is provided and is "html", strip out `\listoffigures` and `\listoftables`,

filter/divide-code-blocks.lua

@@ -26,15 +26,11 @@ function CodeBlock(block)
     font = class_spec["font"]
     return {
         pandoc.RawInline('latex', string.format([[
-            \vskip 3pt
-            \begin{customcodeblock}
-            \textbf{\textit{\textcolor{codeblock-header}{\small \BeginDemarcated{Code}}}}
-            %s
+            \BeginCodeBlock{%s}
         ]], font)),
         block,
         pandoc.RawInline('latex', [[
-            \textbf{\textit{\textcolor{codeblock-header}{\small \EndDemarcated{Code}}}}
-            \end{customcodeblock}
+            \EndCodeBlock
         ]]),
     }
 end

filter/informative-quote-blocks.lua

@@ -82,6 +82,18 @@
   \EndAccSupp{}%
 }
 
+\newcommand{\BeginCodeBlock}[1]{
+  \vskip 3pt
+  \begin{customcodeblock}
+  \textbf{\textit{\textcolor{codeblock-header}{\small \BeginDemarcated{Code}}}}
+  #1
+}
+
+\newcommand{\EndCodeBlock}{
+  \textbf{\textit{\textcolor{codeblock-header}{\small \EndDemarcated{Code}}}}
+  \end{customcodeblock}
+}
+
 % Use upquote if available, for straight quotes in verbatim environments
 \IfFileExists{upquote.sty}{\usepackage{upquote}}{}
 \IfFileExists{microtype.sty}{% use microtype if available