(Recreation of the example post from this upcoming blockquote change announcement.)

Quotes are cool:

But are they?
How do they work?

Do they work and look good?

What about wtht code

And other stuff?
Seems OK.

That's not bad.

Quotes all the way down? Turtles Should we set a max quote depth?

Actual code above:

>>>>>>> Quotes all the way down?    
>>>>> Turtles    
>>> Should we set a max quote depth?

Now the same thing but with empty lines between each line:

Quotes all the way down?

Turtles

Should we set a max quote depth?

Markdown above:

>>>>>>> Quotes all the way down?   

>>>>> Turtles    

>>> Should we set a max quote depth?

#Quoting headers? ##Headers? ###Quoting?

#Quoting headers. ##Headers. ###Quoting.

What about images:

In the proposed example, this style: outline: 10px solid #ddd; was added to the existing css rule: .post-text blockquote img, .... It's crude, but it provides that much needed border around the image differentiating it from the white background, while also making it obvious that it's part of the quote.

An empty quote block? Nope, that's a spoiler!

There's actually a non-breaking space character in it.

Here's a spoiler block with some text inside:

Gandalf is Magneto!

Both quote blocks above contain only a single line, but notice the height difference because the first one doesn't contain any visible characters.

What about quotes with spoilers?

Quotes?

With spoilers?

Curiosity killed the cat!

Indeed it does not work if they're on the same level, but works if they spoiler has an extra > relative to the current quote count of >'s.

Quote block with a spoiler block with an image inside: