Bug Report

Processing the emojis in titles isn't working correctly. Sometimes just turning it into a single ":" character. Seems to work correctly if no leading space before the emoji code.

Steps to reproduce

Insert this content in a page

#### :arrow_forward:  :arrow_forward:
#### :arrow_forward::arrow_forward:
####  :arrow_forward: :arrow_forward:
####  :arrow_forward::arrow_forward:
####  :arrow_forward: :arrow_forward:

What is current behaviour

What is the expected behaviour

All emojis should appear

Other relevant information

• Bug does still occur when all/other plugins are disabled?

• Your OS: mac

• Node.js version: 11.15

• npm/yarn version: 6.7

• Browser version: chrome latest

• Docsify version: cli is 4.4, using latest from cdn

• Docsify plugins: all disabled