collapse comments with long code blocks

[pushcx]

Some clod, and I'm not saying who to be polite, is prone to posting long data dumps in comments.

Let's make the comment template add a css class if a comment includes a code block and more than 10 \n characters, style that class with a max-height and overflow: none, then use the checkbox hack to toggle the full comment (because we don't serve js to logged-out visitors).

[NattyNarwhal]

Alternative idea: why not use a <details> tag, and if the code block hits the line limit, pre-collapse it? This works without JS, and to detect based on lines, you could hack up the Markdown parser?

[pushcx]

Sounds good to me.

[pushcx]

If this is going to get elbow-deep into the markdown parser, it probably depends on #1234