Syntax highlight for custom language not applying

[Esgariot]

Summary

Given a definition of custom yaml-based dsl: (yes, "language" literally named "dsl")

[[language]]
name = "dsl"
language-id = "yaml"
scope = "source.dsl"
file-types = ["yaml", "yml"]
roots = ["dsl.cabal"]
# grammar = "yaml"
language-servers = [ "dsl-language-server" ]

[language-server.dsl-language-server]
command = "dsl"
args = [ "lsp" ]


[[grammar]]
name = "dsl"
source = { git = "https://github.com/ikatyang/tree-sitter-yaml", rev = "0e36bed171768908f331ff7dff9d956bae016efb" }

Setting grammar = "yaml" or adding custom [[grammar]] that uses same tree-sitter lib doesn't work

BUT if I perform :set-language yaml -> :set-language dsl the syntax highlighting works for that particular file.

Reproduction Steps

n/a

Helix log

Nothing interesting there, only that dsl-language-server works as expected.

Platform

Linux

Terminal Emulator

kitty 0.31.0 created by Kovid Goyal

Installation Method

releases page

Helix Version

helix 23.10

[pascalkuthe]

multiple filetype can not have the same file extension or its ambigous which one is used.

You could either change the language name to yaml to overwrite the builtin yaml configuration, use a different file extension or overwrite the yaml file extensions (removing the builtin ones).