Hashtag of note
https://languagelog.ldc.upenn.edu/nll/?p=46455&utm_source=rss&utm_medium=rss&utm_campaign=hashtag-of-note [languagelog.ldc.upenn.edu]
2020-03-18 17:18
You will probably notice immediately that it contains a full-width dash, in other words a Unicode (probably Chinese-origin?) character. For some reason, this is all over Twitter in posts from Anglophone people I am almost completely sure have no input method installed that can actually produce it.
It’s not a real dash at all but a “Katakana-Hiragana prolonged sound mark“: