A more general/global version of https://meta.discourse.org/t/activate-monospace-font-inside-codeblocks-in-the-post-editor/206533. In short, I want to have the same feature as (for example) GitHub has:
Markdown editor font preference
---Font preference for plain text editors that support Markdown styling (e.g. pull request and issue descriptions, comments.)
Use a fixed-width (monospace) font when editing Markdown
Which in practice looks like this:
Having a workaround of having a third-party browser extension with a custom CSS per page/website isn't ideal.
The setting will nicely go into https://meta.discourse.org/u//preferences/interface:
Discuss this on our forum.