Inline Code Execution Not Allowed in URLs
`{lang} expr`) cannot appear inside the URL portion of a link or image.
Q-2-31 — Inline Code Execution Not Allowed in URLs
Inline executable code (
`{lang} expr`) cannot appear inside the URL portion of a link or image.
What this means
Quarto supports inline code execution: a backtick run containing
{language} followed by an expression evaluates the expression
at render time and inserts the result. This error fires when an
author places that form inside the destination of a link or
image — the (...) after [text] or ![alt].
The URL parser reads the backtick run as part of the URL literal, so the executable code never runs.
Why this happens
Most often, an author who wanted to compute a URL dynamically tried to drop inline execution into the URL slot of a link or image.
How to fix
Compute the URL ahead of time in a code chunk, then build the link or image inside that chunk and emit the result as markdown. The exact pattern depends on the engine (Python, R, Julia), but the principle is the same: do not embed inline execution inside link or image destinations.