From f41a83177856a011d409ebc1f2924458773a3e1c Mon Sep 17 00:00:00 2001
From: tiffanysun1 <tiffanysun8@gmail.com>
Date: Thu, 12 Mar 2026 02:26:52 -0700
Subject: [PATCH] Stop version lookup at root

---
 CLI/cmux.swift | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/CLI/cmux.swift b/CLI/cmux.swift
index 6ddd7437..2ad2a8b9 100644
--- a/CLI/cmux.swift
+++ b/CLI/cmux.swift
@@ -8172,7 +8172,7 @@ struct CMUXCLI {
         }
 
         let fileManager = FileManager.default
-        var current = executableURL.deletingLastPathComponent()
+        var current = executableURL.deletingLastPathComponent().standardizedFileURL
 
         while true {
             let projectFile = current.appendingPathComponent("GhosttyTabs.xcodeproj/project.pbxproj")
@@ -8193,8 +8193,7 @@ struct CMUXCLI {
                 }
             }
 
-            let parent = current.deletingLastPathComponent()
-            if parent.path == current.path {
+            guard let parent = parentSearchURL(for: current) else {
                 break
             }
             current = parent
@@ -8263,6 +8262,22 @@ struct CMUXCLI {
         return String(normalized.prefix(12))
     }
 
+    // Foundation can walk past "/" into "/.." when repeatedly deleting path
+    // components, so stop once the canonical root is reached.
+    private func parentSearchURL(for url: URL) -> URL? {
+        let standardized = url.standardizedFileURL
+        let path = standardized.path
+        guard !path.isEmpty, path != "/" else {
+            return nil
+        }
+
+        let parent = standardized.deletingLastPathComponent().standardizedFileURL
+        guard parent.path != path else {
+            return nil
+        }
+        return parent
+    }
+
     private func candidateInfoPlistURLs() -> [URL] {
         guard let executableURL = resolvedExecutableURL() else {
             return []
@@ -8280,7 +8295,7 @@ struct CMUXCLI {
             candidates.append(url)
         }
 
-        var current = executableURL.deletingLastPathComponent()
+        var current = executableURL.deletingLastPathComponent().standardizedFileURL
         while true {
             if current.pathExtension == "app" {
                 appendIfExisting(current.appendingPathComponent("Contents/Info.plist"))
@@ -8299,8 +8314,7 @@ struct CMUXCLI {
                 break
             }
 
-            let parent = current.deletingLastPathComponent()
-            if parent.path == current.path {
+            guard let parent = parentSearchURL(for: current) else {
                 break
             }
             current = parent