Render quotes in content distinctly

[johnsonm]

When rendering quoted content, such as composed on any Fediverse implementation that supports rich text, including but not limited to that composed on the Glitch-soc fork of mastodon, the quoted content should be styled so that it is visibly distinct from non-quoted text. (Note that even the main mastodon supports display of rich text, even though it does not at this time support authoring rich text.)

For example, https://social.makerforums.info/@mcdanlj/109767310773788712 in Mastodon renders like this:

However, the same post in Elk https://main.elk.zone/social.makerforums.info/@mcdanlj/109767310773788712 does not allow the reader to distinguish quoted and unquoted text:

Styling quoted text distinctly is important for accurately conveying meaning.

[stackblitz]

Start a new pull request in StackBlitz Codeflow.

[danielroe]

I would also suggest we render markdown blockquotes for situations like this:

Some text here.
> some quoted text

[johnsonm]

Note that #1509 shows a kind of problem to watch for when doing markdown formatting to an already-formatted posts, though. ☺

[kvibber]

Just to add: Misskey and its forks, GoToSocial, and WordPress+ActivityPub are a few other Fediverse platforms that support blockquotes