From 7084eec35802c62b8b3a7dd300e49920eabc8a10 Mon Sep 17 00:00:00 2001
From: triagent <triagent@localhost>
Date: Sat, 31 Oct 2026 14:43:35 +0000
Subject: [PATCH] fix(coding-agent): highlight dart, nix, and groovy files in
 read/write views

---
 .../src/modes/interactive/theme/theme.ts         |  4 ++++
 .../coding-agent/test/syntax-highlight.test.ts   | 16 +++++++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/packages/coding-agent/src/modes/interactive/theme/theme.ts b/packages/coding-agent/src/modes/interactive/theme/theme.ts
index 876ba9e86..b9ba23760 100644
--- a/packages/coding-agent/src/modes/interactive/theme/theme.ts
+++ b/packages/coding-agent/src/modes/interactive/theme/theme.ts
@@ -969,6 +969,10 @@ export function getLanguageFromPath(filePath: string): string | undefined {
 		java: "java",
 		kt: "kotlin",
 		swift: "swift",
+		dart: "dart",
+		groovy: "groovy",
+		gradle: "groovy",
+		nix: "nix",
 		c: "c",
 		h: "c",
 		cpp: "cpp",
diff --git a/packages/coding-agent/test/syntax-highlight.test.ts b/packages/coding-agent/test/syntax-highlight.test.ts
index 17fe3b2e4..f4ff51c2b 100644
--- a/packages/coding-agent/test/syntax-highlight.test.ts
+++ b/packages/coding-agent/test/syntax-highlight.test.ts
@@ -1,6 +1,12 @@
 import { resetCapabilitiesCache, setCapabilities } from "@earendil-works/pi-tui";
 import { afterEach, beforeEach, describe, expect, it } from "vitest";
-import { getMarkdownTheme, highlightCode, initTheme, theme } from "../src/modes/interactive/theme/theme.ts";
+import {
+	getLanguageFromPath,
+	getMarkdownTheme,
+	highlightCode,
+	initTheme,
+	theme,
+} from "../src/modes/interactive/theme/theme.ts";
 import {
 	highlight,
 	loadAllHighlightLanguages,
@@ -41,6 +47,14 @@ describe("syntax highlight renderer", () => {
 		expect(supportsLanguage("ada")).toBe(true);
 	});
 
+	it("maps file extensions of eagerly loaded languages to their language", () => {
+		expect(getLanguageFromPath("lib/main.dart")).toBe("dart");
+		expect(getLanguageFromPath("flake.nix")).toBe("nix");
+		expect(getLanguageFromPath("script.groovy")).toBe("groovy");
+		expect(getLanguageFromPath("build.gradle")).toBe("groovy");
+		expect(getLanguageFromPath("src/Main.kt")).toBe("kotlin");
+	});
+
 	it("renders highlighted spans with the provided theme", () => {
 		const rendered = renderHighlightedHtml('<span class="hljs-keyword">const</span> value', {
 			keyword: (text) => `[keyword:${text}]`,