feat(auto-pair): auto-pair triple quotes properly

[aster-void]

closes #13697

how it used to be

''|

' ->

'''|'

how it will be

''|

' ->

'''|'''

side changes

it no longer auto-pairs if there are already >= 3 quotes before: '''| + ' -> ''''|

not affected

| -> '|'
'| -> ''|
(((| -> ((((|)

[nik-rev]

Why not just close the code fence as suggested in:

Duplicate of #4035 - ideally we should close the codefence once we reach three backticks

So when you have:

``|

Writing ` will do this:

```|```

This can also work with e.g. triple quotes in Python. So if you have:

""|

Writing " will do this:

"""|"""

I believe this behaviour will be more helpful than simply not inserting the delimiter.

[aster-void]

@nik-rev Thanks! I'll implement that when I have time (probably tomorrow).

[Axlefublr]

omgggg this would be so nice !! this has been a pain point for me for a while

[aster-void]

I tried to make tests for this, but I was not able to.

[the-mikedavis]

It looks like this is special-casing repeated characters. More generally to cover https://github.com/helix-editor/helix/issues/4035 I would like to see auto-pairs act on &strs or rope slices instead of chars

[Axlefublr]

that would solve so much! various keyworded languages would suddenly become much more ergonomic as a result