Add support for markdown "checkboxes"

When submitting an issue here on github, I am able to make lists with “checkboxes” which can be checked/unchecked.

For example, using:

- [ ] an example issue
- [x] a completed issue

will output:

• an example issue
• a completed issue

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Can a similar feature be added (without the fancy rendering)? Where one can insert a “checkbox” using a keyboard shortcut, and then check/uncheck it using another?

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Example screenshot:

[Kilian]

Just pushed this to the checkbox-support branch. if you press <kbd>ctrl + /</kbd>, it will add an empty checkbox to the beginning of the current line (prepended by any whitespace you already have, so indented lists work) . pressing <kbd>ctrl + /</kbd> again will toggle the checkbox to checked and unchecked.

What this doesn’t do is append the checkbox after any “list” items such as * or -, it will instead add the checkbox before the list item but after any whitespace at the beginning of the line. To me this looks better (and it’s less code to write and maintain, so double win). Let me know what you think @evolutionxbox!

[Kilian]

I’ve had this on my personal list as well! I like it a lot but haven’t looked into it yet as it’s changing text content. If it’s doable in a non-hacky way, I’ll try and add it.