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bug#59686: 30.0.50; tree-sitter indentation in some loops and conditiona
From: |
Theodor Thornhill |
Subject: |
bug#59686: 30.0.50; tree-sitter indentation in some loops and conditional statements is wrong |
Date: |
Fri, 02 Dec 2022 12:51:14 +0100 |
Bruce Stephens <bruce.stephens@isode.com> writes:
> On 02/12/2022 08:39, Eli Zaretskii wrote:
>
>> FWIW, this is an unusual style, so I see no catastrophe if it is not 110%
>> according to expectations. Users can easily fix that by tweaking their BOLs
>> where important.
>
>
> The example I gave would be unusual, I think, but I'd argue that the
> situations where I saw the problem are quite natural.
>
> For example,
>
> } else if ( MYSTRCMP (attname, SOME_PREFIX_X400ADDRESS) ||
> MYSTRCMP (attname, SOME_PREFIX_X400) ) {
> FOO_ptr orp = foo_std2foo (val);
>
> or a function declaration with several arguments with types that are
> rather long.
>
> I agree it's not a critical bug but if there's no appropriate general
> fix it would be helpful to have some guidance for users to resolve our
> specific cases.
This is the case I was thinking of. In the for-loop a grand-parent-bol
on compound_statement rule would match the 'for' keyword, so the
indentation will be correct, but this one will not, IIRC. I plan to dig
into this some more soon, but motivation left me a little on that issue.
Maybe we could make a preset like:
```
(seq
(parent-is "compound_statement") parent (parent-is "for_statement") bol)
```
In other words, make other presets execute sequentially, move point,
check again, and if all are true, pick indent offset. Or allow multiple
captures, like so:
```
(for_statement @offset-anchor
body: (compound_statement (_) @to-indent))
```
Here the @to-indent capture would get the new indent level based on
treesit-node-start of for_statement.
What do you think, Yuan?
Theo