Add Svelte as a syntax

.gitmodules

@@ -197,6 +197,9 @@
 [submodule "assets/syntaxes/02_Extra/Apache"]
 	path = assets/syntaxes/02_Extra/Apache
 	url = https://github.com/colinta/ApacheConf.tmLanguage
+[submodule "assets/syntaxes/02_Extra/Svelte"]
+	path = assets/syntaxes/02_Extra/Svelte
+	url = https://github.com/corneliusio/svelte-sublime
 [submodule "assets/themes/Coldark"]
 	path = assets/themes/Coldark
 	url = https://github.com/ArmandPhilippot/coldark-bat.git

CHANGELOG.md

@@ -13,6 +13,7 @@
 ## Syntaxes
 
 - Manpage syntax highlighting has been improved, see #1315 (@keith-hall)
+- Add Svelte file syntax, see #1285 (@kjmph)
 
 ## New themes
 

assets/syntaxes/02_Extra/Svelte

@@ -0,0 +1 @@
+Subproject commit bf92f5b7b69c8ea641d6822fd6d12cc2d9341956

tests/syntax-tests/highlighted/Svelte/App.svelte

@@ -0,0 +1,57 @@
+<script>
+	import { onMount } from 'svelte';
+	import List from './List.svelte';
+	import Item from './Item.svelte';
+
+	let item;
+	let page;
+
+	async function hashchange() {
+		// the poor man's router!
+		const path = window.location.hash.slice(1);
+
+		if (path.startsWith('/item')) {
+			const id = path.slice(6);
+			item = await fetch(`https://node-hnapi.herokuapp.com/item/${id}`).then(r => r.json());
+
+			window.scrollTo(0,0);
+		} else if (path.startsWith('/top')) {
+			page = +path.slice(5);
+			item = null;
+		} else {
+			window.location.hash = '/top/1';
+		}
+	}
+
+	onMount(hashchange);
+</script>
+
+<style>
+	main {
+		position: relative;
+		max-width: 800px;
+		margin: 0 auto;
+		min-height: 101vh;
+		padding: 1em;
+	}
+
+	main :global(.meta) {
+		color: #999;
+		font-size: 12px;
+		margin: 0 0 1em 0;
+	}
+
+	main :global(a) {
+		color: rgb(0,0,150);
+	}
+</style>
+
+<svelte:window on:hashchange={hashchange}/>
+
+<main>
+	{#if item}
+		<Item {item} returnTo="#/top/{page}"/>
+	{:else if page}
+		<List {page}/>
+	{/if}
+</main>

tests/syntax-tests/source/Svelte/App.svelte

@@ -0,0 +1,57 @@
+<script>
+	import { onMount } from 'svelte';
+	import List from './List.svelte';
+	import Item from './Item.svelte';
+
+	let item;
+	let page;
+
+	async function hashchange() {
+		// the poor man's router!
+		const path = window.location.hash.slice(1);
+
+		if (path.startsWith('/item')) {
+			const id = path.slice(6);
+			item = await fetch(`https://node-hnapi.herokuapp.com/item/${id}`).then(r => r.json());
+
+			window.scrollTo(0,0);
+		} else if (path.startsWith('/top')) {
+			page = +path.slice(5);
+			item = null;
+		} else {
+			window.location.hash = '/top/1';
+		}
+	}
+
+	onMount(hashchange);
+</script>
+
+<style>
+	main {
+		position: relative;
+		max-width: 800px;
+		margin: 0 auto;
+		min-height: 101vh;
+		padding: 1em;
+	}
+
+	main :global(.meta) {
+		color: #999;
+		font-size: 12px;
+		margin: 0 0 1em 0;
+	}
+
+	main :global(a) {
+		color: rgb(0,0,150);
+	}
+</style>
+
+<svelte:window on:hashchange={hashchange}/>
+
+<main>
+	{#if item}
+		<Item {item} returnTo="#/top/{page}"/>
+	{:else if page}
+		<List {page}/>
+	{/if}
+</main>

tests/syntax-tests/source/Svelte/LICENSE

@@ -0,0 +1,14 @@
+The `App.svelte` file has been added from:
+
+https://github.com/sveltejs/svelte/blob/master/site/content/examples/21-miscellaneous/01-hacker-news/App.svelte
+
+Under the following license:
+
+
+Copyright (c) 2016-20 [these people](https://github.com/sveltejs/svelte/graphs/contributors)
+
+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.