bug#60025: [PATCH] Add go-ts-mode and go-mod-ts-mode

[Yuan Fu <casouri@gmail.com>]

> On Dec 14, 2022, at 8:21 AM, Randy Taylor <dev@rjt.dev> wrote:
> 
> On Wednesday, December 14th, 2022 at 07:02, Eli Zaretskii <eliz@gnu.org> wrote:
>> 
>>> Date: Tue, 13 Dec 2022 19:39:18 +0000
>> 
>>> From: Randy Taylor dev@rjt.dev
>>> Cc: 60025@debbugs.gnu.org, theo@thornhill.no, casouri@gmail.com
>>> 
>>> +** New major mode 'go-mod-ts-mode'.
>>> +A major mode based on the tree-sitter library for editing go.mod
>>> +files. It includes support for font-locking and indentation. This
>>> +mode will be auto-enabled for go.mod files.
>> 
>> 
>> Please quote go.mod as 'go.mod' (we quote file names and symbols in
>> NEWS).
>> 
>> Otherwise, this LGTM, thanks.
>> 
> 
> Thanks, here's the new patch. I double-quoted it since that's what other file names and extensions have in NEWS - hopefully that's right. Assuming that's OK, should be good to install.
> 
> Yuan, did you see my original post in this thread? I'm wondering how to go about tackling that indentation problem (I'm probably missing something very simple and obvious).

Ah, oops, replies below:

> I am having a tiny bit of trouble with a go.mod indentation rule. Using the patch, create a go.mod file anywhere, activate go-mod-ts-mode and add the following:
> 
> require ()
> 
> Place point inside the parens, and then hit enter. The expectation is that point will end up indented inside that block. If you add the text "test v1.0.0" and hit TAB, it will indent properly (and if you hit enter after that text it will indent properly for the next entry). If you go to the end of the line for the top paren and hit enter, it will not indent (and we want it to). It seems to give us no-node in that circumstance. Is there a simple indent rule that can match exactly that that I'm missing?

I think you can just test for the parent? In C, if point is at an empty line after a statement in a block, like this:

int main() {
  return 0;
  |
}

The matched rule is (parent-is “compond_statement”), where compound_statement is the block. In your case, I guess you can test if parent is the argument list.

Yuan