From a911e78d77ef63c028cac3ae91ceae4614113ff4 Mon Sep 17 00:00:00 2001
From: KJ7LNW <93454819+KJ7LNW@users.noreply.github.com>
Date: Thu, 8 May 2025 19:51:44 -0700
Subject: [PATCH] fix: handle unsupported language errors gracefully in
 read_file tool (#3359)

Co-authored-by: Eric Wheeler <roo-code@z.ewheeler.org>
---
 src/core/tools/readFileTool.ts | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/core/tools/readFileTool.ts b/src/core/tools/readFileTool.ts
index f615ba17c4..c2e2bf8466 100644
--- a/src/core/tools/readFileTool.ts
+++ b/src/core/tools/readFileTool.ts
@@ -164,7 +164,21 @@ export async function readFileTool(
 
 				const res = await Promise.all([
 					maxReadFileLine > 0 ? readLines(absolutePath, maxReadFileLine - 1, 0) : "",
-					parseSourceCodeDefinitionsForFile(absolutePath, cline.rooIgnoreController),
+					(async () => {
+						try {
+							return await parseSourceCodeDefinitionsForFile(absolutePath, cline.rooIgnoreController)
+						} catch (error) {
+							if (error instanceof Error && error.message.startsWith("Unsupported language:")) {
+								console.warn(`[read_file] Warning: ${error.message}`)
+								return undefined
+							} else {
+								console.error(
+									`[read_file] Unhandled error: ${error instanceof Error ? error.message : String(error)}`,
+								)
+								return undefined
+							}
+						}
+					})(),
 				])
 
 				content = res[0].length > 0 ? addLineNumbers(res[0]) : ""