feat(ts): add mustache parser with cloudinit filetype alias

NOTICE

@@ -92,3 +92,30 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+This software includes tree-sitter queries derived from tree-sitter-mustache
+(https://github.com/TheLeoP/tree-sitter-mustache)
+
+The MIT License (MIT)
+
+Copyright (c) 2024-2025 TheLeoP
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

init.lua

@@ -63,6 +63,12 @@ require("ts").setup({
     "https://github.com/tree-sitter/tree-sitter-html",
     "https://github.com/tree-sitter/tree-sitter-json",
     "https://github.com/tree-sitter-grammars/tree-sitter-luadoc",
+    {
+        src = "https://github.com/TheLeoP/tree-sitter-mustache",
+        aliases = {
+            { lang = "cloudinit", filetypes = { "cloudinit" } },
+        },
+    },
     {
         src = "https://github.com/tree-sitter/tree-sitter-php",
         parsers = {

lua/core/filetypes.lua

@@ -1,5 +1,6 @@
 vim.filetype.add({
     pattern = {
         [".*%.xml%.tmpl"] = "gotmpl",
+        [".*%.cloud%-init%.yml"] = "cloudinit",
     },
 })

lua/ts.lua

@@ -2,12 +2,17 @@ local log = require("log")
 
 local M = {}
 
+---@class ow.TS.Alias
+---@field lang string
+---@field filetypes? string[]
+
 ---@class ow.TS.Parser
 ---@field lang string
 ---@field location? string
 ---@field generate? boolean
 ---@field from_json? boolean
 ---@field filetypes? string[]
+---@field aliases? ow.TS.Alias[]
 
 ---@class ow.TS.RepoBase
 ---@field src string
@@ -24,6 +29,7 @@ local M = {}
 ---@field generate? boolean
 ---@field from_json? boolean
 ---@field filetypes? string[]
+---@field aliases? ow.TS.Alias[]
 
 ---@class ow.TS.MultiSpec : ow.TS.RepoBase
 ---@field parsers ow.TS.Parser[]
@@ -52,28 +58,62 @@ local function start_treesitter(buf)
     end
 end
 
----@param parser ow.TS.Parser
+---@param lang string
 ---@param so string
-local function register(parser, so)
+---@param filetypes? string[]
-    vim.treesitter.language.add(parser.lang, { path = so })
+---@param symbol_name? string
-    local filetypes = { parser.lang }
+local function register_lang(lang, so, filetypes, symbol_name)
-    if parser.filetypes then
+    vim.treesitter.language.add(
-        vim.treesitter.language.register(parser.lang, parser.filetypes)
+        lang,
-        vim.list_extend(filetypes, parser.filetypes)
+        { path = so, symbol_name = symbol_name }
+    )
+    local fts = { lang }
+    if filetypes then
+        vim.treesitter.language.register(lang, filetypes)
+        vim.list_extend(fts, filetypes)
     end
 
     vim.api.nvim_create_autocmd("FileType", {
         group = vim.api.nvim_create_augroup(
-            "ow.ts.parser." .. parser.lang,
+            "ow.ts.parser." .. lang,
             { clear = true }
         ),
-        pattern = filetypes,
+        pattern = fts,
         callback = function(ev)
             start_treesitter(ev.buf)
         end,
     })
 end
 
+---@class ow.TS.LangEntry
+---@field lang string
+---@field filetypes? string[]
+---@field symbol_name? string
+
+---@param parser ow.TS.Parser
+---@return ow.TS.LangEntry[]
+local function parser_langs(parser)
+    local entries = {
+        { lang = parser.lang, filetypes = parser.filetypes },
+    }
+    for _, alias in ipairs(parser.aliases or {}) do
+        table.insert(entries, {
+            lang = alias.lang,
+            filetypes = alias.filetypes,
+            symbol_name = parser.lang,
+        })
+    end
+    return entries
+end
+
+---@param parser ow.TS.Parser
+---@param so string
+local function register(parser, so)
+    for _, e in ipairs(parser_langs(parser)) do
+        register_lang(e.lang, so, e.filetypes, e.symbol_name)
+    end
+end
+
 ---@param lang string
 local function activate_open_buffers(lang)
     local fts = vim.treesitter.language.get_filetypes(lang)
@@ -110,7 +150,9 @@ local function build(repo, parser)
             return
         end
         register(parser, out)
-        activate_open_buffers(parser.lang)
+        for _, e in ipairs(parser_langs(parser)) do
+            activate_open_buffers(e.lang)
+        end
     end
 
     local function do_build()
@@ -206,6 +248,7 @@ local function spec_to_repo(spec)
                 generate = pick(s.generate, spec.generate),
                 from_json = pick(s.from_json, spec.from_json),
                 filetypes = s.filetypes,
+                aliases = s.aliases,
             })
         end
     else
@@ -225,6 +268,7 @@ local function spec_to_repo(spec)
             generate = spec.generate,
             from_json = spec.from_json,
             filetypes = spec.filetypes,
+            aliases = spec.aliases,
         })
     end
 

nvim-pack-lock.json

@@ -101,6 +101,10 @@
       "rev": "873612aadd3f684dd4e631bdf42ea8990c57634e",
       "src": "https://github.com/tree-sitter-grammars/tree-sitter-luadoc"
     },
+    "tree-sitter-mustache": {
+      "rev": "0f1f3cf07508a64b84cbff457f1446a787c48a0e",
+      "src": "https://github.com/TheLeoP/tree-sitter-mustache"
+    },
     "tree-sitter-php": {
       "rev": "3f2465c217d0a966d41e584b42d75522f2a3149e",
       "src": "https://github.com/tree-sitter/tree-sitter-php"

queries/cloudinit/folds.scm

@@ -0,0 +1 @@
+; inherits: mustache

queries/cloudinit/highlights.scm

@@ -0,0 +1 @@
+; inherits: mustache

queries/cloudinit/injections.scm

@@ -0,0 +1,5 @@
+; inherits: mustache
+
+((text) @injection.content
+  (#set! injection.language "yaml")
+  (#set! injection.combined))

queries/mustache/folds.scm

@@ -0,0 +1,4 @@
+[
+  (inverted_section)
+  (section)
+] @fold

queries/mustache/highlights.scm

@@ -0,0 +1,26 @@
+; Forked from https://github.com/TheLeoP/tree-sitter-mustache
+; Copyright (c) 2024-2025 TheLeoP
+; Licensed under the MIT license.
+; Modifications Copyright 2026 Oscar Wallberg, Apache-2.0
+
+[
+  (start_delimiter)
+  (end_delimiter)
+  "{"
+  "}"
+] @punctuation.bracket
+
+(identifier) @variable
+
+(partial_content) @module
+
+"." @punctuation.delimiter
+
+[
+  "#"
+  "/"
+  "^"
+  ">"
+] @punctuation.special
+
+(comment_statement) @comment @spell

queries/mustache/injections.scm

@@ -0,0 +1,2 @@
+((comment_statement) @injection.content
+  (#set! injection.language "comment"))