Underscores in LaTeX autorefs Are Unnecessarily Escaped

[ipetraka]

Version: MultiMarkdown 6.7.0
System: Linux Debian 11.7 "Bullseye"; macOS 13.x "Ventura"

Description

The handling of label names for LaTeX conversion will unnecessarily escape underscore characters (_), in the value inserted into \autoref{...}. This will cause LaTeX compilation to break as the \ character inserted by MMD is invalid in a label, and wouldn't match the value inserted into the \label{...} anyway (which is correctly output, and not escaped).

Reproduction

Execute the following test data into a shell:

$ multimarkdown -t latex
# Test Hyphenated-Words and Underscored_Words in Labels

And test references to them, [Test Hyphenated-Words and Underscored_Words in Labels], and [to images](#image_name).

![Figure caption][image_name]

[image_name]: /path/to/image_name.jpg

# Also test manual labels [manual_section]

And the references we would make to them, [][manual_section].

Expected Result (6.6.0 output)

\part{Test Hyphenated-Words and Underscored\_Words in Labels}
\label{testhyphenated-wordsandunderscored_wordsinlabels}

And test references to them, Test Hyphenated-Words and Underscored\_Words in Labels (\autoref{testhyphenated-wordsandunderscored_wordsinlabels}), and to images (\autoref{image_name}).

\begin{figure}[htbp]
\centering
\includegraphics[keepaspectratio,width=\textwidth,height=0.75\textheight]{/path/to/image_name.jpg}
\caption{Figure caption}
\label{image_name}
\end{figure}

\part{Also test manual labels}
\label{manual_section}

And the references we would make to them, \autoref{manual_section}.

Actual Result

As we can see, the labels themselves are all correctly listed, but all three different forms of referencing will escape the underscore character.

\part{Test Hyphenated-Words and Underscored\_Words in Labels}
\label{testhyphenated-wordsandunderscored_wordsinlabels}

And test references to them, Test Hyphenated-Words and Underscored\_Words in Labels (\autoref{testhyphenated-wordsandunderscored\_wordsinlabels}), and to images (\autoref{image\_name}).

\begin{figure}[htbp]
\centering
\includegraphics[keepaspectratio,width=\textwidth,height=0.75\textheight]{/path/to/image_name.jpg}
\caption{Figure caption}
\label{image_name}
\end{figure}

\part{Also test manual labels}
\label{manual_section}

And the references we would make to them, \autoref{manual\_section}.

[fletcher]

Thanks!