GNU bug report logs - #68054
[PATCH] Add tree-sitter indent rule for lexical decls in js/typescript

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From: Noah Peart <noah.v.peart <at> gmail.com>
To: 68054 <at> debbugs.gnu.org
Subject: bug#68054: [PATCH] Add tree-sitter indent rule for lexical decls in js/typescript
Date: Wed, 27 Dec 2023 01:21:05 -0500

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Tags: patch

* Bug: `js-ts-mode` and `typescript-ts-mode` are missing indentation
rules for lexical declarations that span multiple lines.

Recipe to reproduce:

Using the following function to configure js-ts-mode and indent the
buffer:

    (defun try-indent ()
      (interactive)
      (js-ts-mode)
      (setq-local indent-tabs-mode nil)
      (setq-local js-indent-level 4)
      (indent-region (point-min) (point-max)))

Add the following example to a buffer and call `try-indent`.

    let foo = 1,
    bar = 2; // no indent rule matches this line

No indentation is applied to the second line.

This patch adds a simple indentation rules for `js-ts-mode` and
`typescript-ts-mode` to handle the multi-line lexical declarations.


In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.33, cairo version 1.16.0) of 2023-12-26 built on nverno-XPS-8940
Repository revision: d376462c7183752bf44b9bd20bf5020fe7eaf75a
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101004
System Description: Ubuntu 22.04.3 LTS

Configured using:
 'configure --prefix=/usr/local --with-modules --with-tree-sitter
--with-threads --with-x-toolkit=gtk3 --with-xwidgets --with-gnutls
--with-json --with-mailutils --with-jpeg --with-png --with-rsvg
--with-tiff --with-xml2 --with-xpm --with-imagemagick CC=gcc-12
CXX=gcc-12'

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[js-ts-indent-decls.patch (text/x-patch, attachment)]

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