可以发送空聊天消息

[sam (Sam Saffron)]

Legit… this is an oversight and certainly looks odd… we should ban “blank” both server side and client side.

Blank is a tricky animal

Adding text between <> characters renders an empty post. (Example in this post)

When we have seen the same issue, we simply fence them with MD. <here is the good stuff> <here is the sweet stuff> ```<here is the good stuff>``` `<here is the sweet stuff>`

Khmer Unicode Zero Width Space disappears after posting

Hi there, I just installed discourse and found out that it didn’t support Zero Width Space at all. It is Khmer Unicode special character that represents a hidden space to separate each word. you can take a look here http://www.askcambodia.org/t/angelababy/21

discourse/discourse/blob/96e3c5e102d539782964025f2ec67f594cbac969/lib/text_cleaner.rb#L75-L83

Recommend we just use our text cleaner here server side as well to ensure people don’t cheat themselves as well.