Support Markdown-like symbols

[blablup]

Hello,

Can you add the Symbols

- [ ]
- [x]
- [-]

because some Apps (like Notable ;-) ) don't recognize it as checkbox otherwise. That would make the todos much more compatible to other apps with md support. I sync my todos to my mobile, and that would give the advantage to be able to do basic operations easier.

regards

[fabiospampinato]

I should look into that. I don't remember if it's desirable for some reason that symbols are not a prefix of other symbols 🤔

[prtksxna]

Tried changing my settings to this, and I thought it'd just work:

"todo.symbols.box": "- [ ]",
"todo.symbols.cancelled": "- [-]",
"todo.symbols.done": "- [x]",

Weirdly I understand this is not one of the supported characters, and so I get an extra set of square brackets on a state change, but everything else works fine:

- [ ] Test
- [x] [ ] Test2 @done(2022-12-02 15:08)
- [-] [ ] Test3 @cancelled(2022-12-02 15:08)

[v-iashin]

Also #166

[benqua]

In the same vein, is TODO+ supposed to work with the Markdown TODO extension? If yes, how?