From b2e4b77e0a8a00eee7c70bab3810ee0db1f5a0cf Mon Sep 17 00:00:00 2001
From: Dean Rie <deanalexrie@gmail.com>
Date: Sun, 25 Oct 2026 11:32:43 +0300
Subject: [PATCH] Encode repo paths in raw.githubusercontent.com URLs

fetchGitHubFile and the relative logo URL interpolated tree paths into the
raw URL as they came from the GitHub tree API, unencoded. A path with a #
stopped at the fragment, a ? at the query, and a % was read as a broken
escape, so a rule such as rules/c#.mdc fetched rules/c, got a 404, and was
dropped from the import without a message. A sub-plugin directory with such
a character lost its plugin.json the same way.

Each path segment is now percent-encoded and the slashes between them
kept, through one rawGitHubUrl helper used by both call sites. Plain paths
produce the same URL as before.
---
 apps/cursor/src/lib/github-plugin/parse.ts | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/apps/cursor/src/lib/github-plugin/parse.ts b/apps/cursor/src/lib/github-plugin/parse.ts
index 6fb62149..aef23b1a 100644
--- a/apps/cursor/src/lib/github-plugin/parse.ts
+++ b/apps/cursor/src/lib/github-plugin/parse.ts
@@ -187,12 +187,25 @@ export async function fetchWithRateLimit(
  */
 export type FetchOptions = { maxWaitMs?: number };
 
+/**
+ * Raw-content URL for a repo path. Tree paths arrive unencoded, so a `#`
+ * would start a URL fragment, a `?` a query, and a `%` a broken escape; each
+ * segment is encoded while the `/` between them is kept.
+ */
+function rawGitHubUrl(owner: string, repo: string, path: string): string {
+  const encodedPath = path
+    .split("/")
+    .map((segment) => encodeURIComponent(segment))
+    .join("/");
+  return `https://raw.githubusercontent.com/${owner}/${repo}/HEAD/${encodedPath}`;
+}
+
 async function fetchGitHubFile(
   owner: string,
   repo: string,
   path: string,
 ): Promise<string | null> {
-  const url = `https://raw.githubusercontent.com/${owner}/${repo}/HEAD/${path}`;
+  const url = rawGitHubUrl(owner, repo, path);
   try {
     const res = await fetch(url, { cache: "no-store" });
     if (!res.ok) return null;
@@ -593,7 +606,7 @@ export async function parseGitHubPlugin(
         logo = manifest.logo;
       }
     } catch {
-      logo = `https://raw.githubusercontent.com/${owner}/${repo}/HEAD/${manifest.logo.replace(/^\.?\//, "")}`;
+      logo = rawGitHubUrl(owner, repo, manifest.logo.replace(/^\.?\//, ""));
     }
   }