simon/i26 emoji helper functions

[Simon-Laux]

• add emoji parsing and a few helper functions
• update changelog and readme
• wasm api demo and readme
• add two failing cases that I found while making the web demo

closes #26

TODO:

• fix failing test cases

[Simon-Laux]

What is this?

Basically provides helper functions for emoji parsing, which allow us:

• to replace the regex in desktop (and maybe android) for detecting if an emoji message should be displayed bigger because it contains only a few emojis:(sometimes also called "jumbomoi"?)
  • iOS already has good system unicode emoji detection in swift
• and the pr is a pre-requisite for other tasks such as
  • a mode where emojis are parsed into a dedicated element, useful for systems where unicode emoji font rendering is buggy (deltatouch, maybe also older android versions and kaiOS);
  • or another usecase could be for core to know what an emoji exactly is for example to allow emoji text avatars but not other avatars, which was a recent topic of a meeting, where bjoern and others proposed a default avatar.

[farooqkz]

So I guess a combination of many1 and satisfy is used instead of take_while1 to recognize characters instead of a string. right?

[Simon-Laux]

yes probably (though it is too long ago, so I don't remember every detail of the pr)