Most emojis seem to be above the first 16 bits. [1] But there are a number of emojis in the first 16 bits, like the "frowning face" emoji at U+2639 -- it rotates just fine -- plus others in the first 16 bits.
(TIL you can't paste emojis into HN comment threads. Probably all for the best.)
It got in the way of me explaining the Rebus principle used in Egyptian hieroglyphs a little while ago.
Then again, the topic was phalluses in Unicode (which do display!), so maybe you're right.
I'm gonna make a HN where you can only speak in Emoji!
Sorta unrelated, does anyone remember the social network where you could only write in Emoji? http://emoj.li/
https://unicode.org/emoji/charts/full-emoji-list.html
https://unicode.org/emoji/charts/full-emoji-modifiers.html
You might need to split the text over multiple comments. Don’t remember whether or not there is a limit to the length a comment can have. Probably there is.
I can post, for example: ↙️ ↩️ ⌚ ⌛ ⌨ ⏏ ⏩ ⏰ ️⏱ ⏲ ⏳ ️◾
edit: scratch that, they get stripped out.