How can I include an ampersand (&) in a code block macro?

Question

I would like to include literal ampersands (&) in code blocks using the code block macro. Is this possible?

Matthias Pigulla · Answer

Just stumbled across this as well.

Using a "code block" macro,

foo & bar

will be shown as-is, but

http://host/foo&bar

will turn into

http://host/foo&bar

I suspect that's bug, probably some filter trying to escape URLs for <a> tags?

Michael Lowry · Answer

I found that the problem does not happen when the default syntax highlighting is enabled, but only when we use a custom one. I gather the problem lies therein. I’ll see if I can fix it.

Michael Lowry · Answer

I discovered that the ampersand (&) is replaced with the corresponding HTML entity (&) whenever it is followed by a dollar sign ($).

Other ampersands are rendered correctly.