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feat: add Amber syntax highlighting
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‎README.md‎

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## <a name="what-is-it"></a>What is it?
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2020
This [EclipseⓇ](https://eclipse.org) plug-in adds syntax highlighting support for the following languages/file formats utilizing [TM4E](https://github.com/eclipse/tm4e):
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1. Amber - https://amber-lang.com/
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1. ANTRL4 - https://www.antlr.org/
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1. Apache HTTP configuration files - https://httpd.apache.org/docs/current/configuring.html
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1. Astro - https://astro.build/
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| Language/Format | File Associations | Source
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|:--------------- |:----------------- |:------ |
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| Amber <img src="plugin/syntaxes/amber/amber.icon.png" width=16/> | file-extensions="ab, amber" | [main@amber-lang/amber-vsc](https://github.com/amber-lang/amber-vsc/tree/c0ebd53e075698fa62efffd492a41b27bff1c227/)
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| ANTLR <img src="plugin/syntaxes/antlr4/icon.png" width=16/> | file-extensions="g, g4" | [master@mike-lischke/vscode-antlr4](https://github.com/mike-lischke/vscode-antlr4/tree/8408f1d50c59bc81f52795525ad41a6b50787316/)
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| Apache HTTP Config <img src="plugin/syntaxes/apache-http/icon.png" width=16/> | file-extensions="conf, htaccess, htgroups, htpasswd" | [master@mrmlnc/vscode-apache](https://github.com/mrmlnc/vscode-apache/tree/0585b0bb3d390fc541aa27cfcfb83b3204156be3/)
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| Astro <img src="plugin/syntaxes/astro/astro.icon.png" width=16/> | file-extensions="astro" | [main@withastro/language-tools](https://github.com/withastro/language-tools/tree/b4bcb4fc02cd960936a5faee6c9cc0ad94fc4c05/packages/vscode)

‎plugin/plugin.xml‎

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<!-- START-GENERATED -->
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<!-- ======================================== -->
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<!-- amber/amber: Amber -->
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<!-- ======================================== -->
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<extension point="org.eclipse.core.contenttype.contentTypes">
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<content-type id="extra-syntax-highlighting.amber" name="Amber" base-type="extra-syntax-highlighting.basetype" priority="normal"
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file-extensions="ab,amber" />
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</extension>
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<extension point="org.eclipse.tm4e.registry.grammars">
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<grammar scopeName="source.amber" path="syntaxes/amber/amber.tmLanguage.json" />
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<scopeNameContentTypeBinding scopeName="source.amber" contentTypeId="extra-syntax-highlighting.amber" />
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</extension>
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<extension point="org.eclipse.tm4e.languageconfiguration.languageConfigurations">
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<languageConfiguration contentTypeId="extra-syntax-highlighting.amber" path="syntaxes/amber/amber.language-configuration.json" />
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</extension>
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<extension point="org.eclipse.ui.genericeditor.icons">
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<icon contentType="extra-syntax-highlighting.amber" icon="syntaxes/amber/amber.icon.png"/>
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</extension>
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<extension point="org.eclipse.tm4e.ui.snippets">
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<snippet name="Amber Example" path="syntaxes/amber/amber.example.ab" scopeName="source.amber" />
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</extension>
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<!-- ======================================== -->
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<!-- antlr4/antlr: ANTLR -->
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<!-- ======================================== -->

‎plugin/syntaxes/amber/LICENSE.txt‎

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

‎plugin/syntaxes/amber/amber.example.ab‎

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/// Sample Amber file for syntax highlighting showcase
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module demo.syntax
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// --- Imports ---------------------------------------------------------
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import std::io
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import std::collections::{Map, Set}
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import app::utils as utils
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// --- Records, Enums, Traits -----------------------------------------
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/// A simple record with typed fields
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record User {
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id: Int,
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name: String,
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email: Option<String>,
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}
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/// An enum with payloads and unit cases
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enum Message {
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Ping
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Text(content: String)
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Error(code: Int, reason: String)
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}
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/// A trait (interface)
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trait Printable {
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fn print(self)
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}
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// --- Implementations -------------------------------------------------
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impl Printable for User {
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fn print(self) {
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io::println("User(#{}): {}", self.id, self.name)
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}
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}
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impl Printable for Message {
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fn print(self) {
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match self {
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Ping =>
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io::println("Ping"),
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Text(content) =>
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io::println("Text: {}", content),
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Error(code, reason) =>
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io::println("Error {}: {}", code, reason)
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}
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}
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}
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// --- Generic Functions ----------------------------------------------
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fn identity<T>(value: T): T {
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value
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}
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fn map_usernames(users: List<User>): List<String> {
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users.map(|u| u.name)
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}
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// --- Async/await -----------------------------------------------------
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async fn fetch_user(id: Int): Result<User, String> {
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let response = await utils::http_get("https://api.example.com/users/{}", id)
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match response {
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Ok(json) => utils::parse_user(json),
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Err(e) => Err("Network error: {}".format(e))
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}
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}
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// --- Main Program ----------------------------------------------------
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fn main() {
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// Variables
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let mut users = List<User>::new()
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// Creating instances
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let u1 = User(id: 1, name: "Alice", email: Some("alice@example.com"))
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let u2 = User(id: 2, name: "Bob", email: None)
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users.push(u1)
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users.push(u2)
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// Pattern matching
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let msg = Message::Text("Hello Amber!")
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msg.print()
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// Pipeline operator
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let names =
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users
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|> map_usernames
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|> List::sort
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io::println("Usernames: {}", names)
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// Async example
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let result = await fetch_user(3)
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match result {
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Ok(user) => user.print(),
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Err(err) => io::println("Failed to fetch user: {}", err)
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}
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}

‎plugin/syntaxes/amber/amber.icon.png‎

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‎plugin/syntaxes/amber/amber.icon@2x.png‎

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‎plugin/syntaxes/amber/amber.language-configuration.json‎

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{
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"comments": {
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"lineComment": "//"
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},
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"brackets": [
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["{", "}"],
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["[", "]"],
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["(", ")"]
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],
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"autoClosingPairs": [
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["{", "}"],
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["[", "]"],
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["(", ")"],
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["\"", "\""],
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["$", "$"]
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],
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"surroundingPairs": [
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["{", "}"],
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["[", "]"],
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["(", ")"],
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["\"", "\""],
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["$", "$"]
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],
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"indentationRules": {
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"increaseIndentPattern": "^.*(\\{|:)\\s*$",
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"decreaseIndentPattern": "^\\s*\\}.*$"
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}
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}

‎plugin/syntaxes/amber/amber.tmLanguage.json‎

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{
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"$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
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"name": "amber",
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"patterns": [
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{
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"include": "#keywords"
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},
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{
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"include": "#strings"
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},
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{
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"include": "#commands"
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},
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{
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"include": "#chars"
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},
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{
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"include": "#commentLine"
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}
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],
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"repository": {
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"keywords": {
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"patterns": [
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{
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"match": "^#!.*$",
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"name": "comment.line.shebang.amber"
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},
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{
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"match": "(fun)\\s+(\\w[^\\(]+)",
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"captures": {
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"1" : {
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"name" : "keyword.control.amber"
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},
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"2" : {
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"name" : "entity.name.function"
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}
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}
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},
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{
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"name": "keyword.control.amber",
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"match": "\\b(if|loop|for|ref|return|fun|else|then|break|continue|and|or|not|let|const|import|from|pub|main|echo|cd|exit|mv|as|in|fail|failed|succeeded|exited|status|silent|nameof|len|lines|is|unsafe|trust|sudo|while)\\b"
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},
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{
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"match": "^#\\[.*\\]$",
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"name": "comment.compiler.amber"
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},
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{
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"match": "\\b(true|false|null)\\b(?![?!])",
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"name": "constant.language.boolean.amber"
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},
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{
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"match": "\\b(Text|Num|Int|Bool|Null)\\b",
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"name": "support.type.amber"
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},
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{
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"match": "[A-Z][a-z0-9_]+",
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"name": "entity.name.class.amber"
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},
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{
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"match": "[+-]?([0-9]*[.])?[0-9]+",
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"name": "constant.language.float.amber"
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},
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{
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"match": "\\b\\w+\\s*(?=\\([\\S\\s]*?\\)?)",
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"name": "entity.name.function"
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},
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{
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"name" : "keyword.operator.amber",
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"match" : "(\\+|\\-|\\^|\\*|\\=|\\||\\%|!|>|<|[.]{2}|\\?)"
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},
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{
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"name" : "comment.block",
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"match": "(\\/\\*[\\w\\'\\s\\r\\n\\*]*\\*\\/)"
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},
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{
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"name" : "variable.name",
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"match" : "\\b\\w+\\b"
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}
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]
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},
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"string-insides" : {
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"patterns": [
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{
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"name": "constant.character.escape.amber",
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"match": "\\\\."
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},
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{
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"name": "keyword.control",
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"begin" : "\\{",
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"end" : "\\}",
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"patterns": [
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{
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"include" : "$self"
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}
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]
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}
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]
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},
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"command-insides" : {
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"patterns": [
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{
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"name": "constant.character.escape.amber",
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"match": "\\\\."
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},
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{
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"name": "constant.language",
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"match": "-{1,2}[A-Za-z0-9-_]+"
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},
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{
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"name": "nothing",
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"match": "[A-Za-z0-9-_]+"
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},
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{
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"name": "keyword.control",
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"begin" : "\\{",
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"end" : "\\}",
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"patterns": [
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{
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"include" : "$self"
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}
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]
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}
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]
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},
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"strings": {
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"name": "string.quoted.double.amber",
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"begin": "\"",
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"end": "\"",
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"patterns": [
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{
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"include": "#string-insides"
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}
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]
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},
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"commands": {
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"name": "string",
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"begin": "\\$",
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"end": "\\$",
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"patterns": [
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{
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"include": "#command-insides"
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}
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]
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},
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"commentLine" : {
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"name":"comment.line",
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"begin" : "//",
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"end" : "$"
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}
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},
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"scopeName": "source.amber"
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}

‎plugin/syntaxes/amber/icon.png‎

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‎plugin/syntaxes/amber/icon@2x.png‎

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