Autocomplete markdown syntax

I use Bear a lot for school and I have to write quickly during lessons. A feature that I’d love to have is an autocomplete for markdown syntax by pressing Enter.
Example: now, to write a word in bold I have to write underscore twice, write the word and then write underscore twice again. Instead if to do the same thing but I have to write twice underscore, then the word and then press enter to automatically close the bold part, it would be a lot faster and more convenient.