Error producing PDF with **#;**

[Wandmalfarbe]

Original issue here: Wandmalfarbe/pandoc-latex-template#60

Steps to Reproduce

1. Create a .md file with contents

   **`#;`**

2. Run pandoc example.md -o example.pdf --from markdown --template default --listings

The Error

Error producing PDF.
! Illegal parameter number in definition of \reserved@a.
<to be read again>
                   ;
l.327 \textbf{\passthrough{\lstinline!#;!}}

[jgm]

If someone who knows the listings package well can tell me what output should be produced here, I can change pandoc to produce it.

[Wandmalfarbe]

It seems that \passthrough is the culprit here. A bit of googling shows that it might has to do with something called fragile and robust commands. But I'm no expert at that.

When I remove the \passthrough, the inline listing is bold. That is propably not the best way to change the font weight of an inline listing, but it works nontheless.

\begin{enumerate}
\def\labelenumi{\arabic{enumi}.}
\tightlist
\item
  This is the example: \passthrough{\lstinline!#;!}
\item
  This is the example: \textbf{\lstinline!#;!}
\end{enumerate}

[Wandmalfarbe]

After a bit of digging I think I found the solution. Commit 730796e introduced \passthrough to fix a problem with escaping in the lstinline environment. The mentioned characters %{}\ are always escaped and the environment is wrapped into the dummy environment passthrough.

The listings documentation states in section 4.1 that the character # needs to be escaped too. So adding the character to the list of escaped characters might fix this issue.

[jgm]

@Wandmalfarbe you were exactly right.