Add support to update indentation

[ronisbr]

Hi!

In Neovim, I can type == to fix the current line indentation. This feature is useful in many cases where you want to update the indentation of the current line due to some modification or new code. Currently, Helix update correctly the indentation (using treesitter I guess) when a new line is created. But there is no way to update the indentation based on treesitter on an existing line.

For example, if I have:

double coefs[4] = {
    1.0,
    2.0,
    3.0,
           4.0|
};

I want to convert to:

double coefs[4] = {
    1.0,
    2.0,
    3.0,
    4.0|
};

Ref: #12787

[Daniel-Ros]

You can use the anchor action (&) to align them.

[ronisbr]

Hi @Daniel-Ros!

You can use the anchor action (&) to align them.

It can of course be used as a work around. However, it is not a good solution specially if you have many lines together and multiple indentation levels.