GFM Example 31

[jakekwak]

https://github.github.com/gfm/#example-31

- Foo
- * * *

- ***
* ---

Is there a reason to handle === in isHrMD and * --- in SpinVditorDOM?
=== is changed after typing enter, but * --- is changed without enter.
I think enter is better.

[88250]

Is there a reason to handle === in isHrMD and * --- in SpinVditorDOM?

Because parsing <li> is complicated, there are many rules to follow by, so we need Lute to handle it. Instead, parsing <hr> is simpler, and Vditor needs to decide when to parse. For example, when the user types a space, some times need to parse but some times need not be.

When needs to parse is the core user experience, we should focus on it always. Our guideline is instant as much as possible. The Setext Heading (--- and ===) support just improved, maybe rendered without typing enter in the future.

Thank you for these suggestions, we keep moving!