"Permission denied" error on Windows when username contains spaces (unquoted temp file path)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Description

On Windows (Git Bash / MINGW64), every Bash tool invocation produces the error:

/usr/bin/bash: line 1: /c/Users/User: Permission denied

This happens because Claude Code appends an unquoted path to the bash -c command for tracking the current working directory:

```bash
pwd -P >| /c/Users/User Name/AppData/Local/Temp/claude-XXXX-cwd

Since the username (User Name) contains a space and the path is not quoted, bash word-splits it:

• pwd -P >| /c/Users/User → tries to write to a directory → Permission denied
• Name/AppData/Local/Temp/claude-XXXX-cwd → interpreted as a separate command

Expected behavior

The temp file path should be quoted:

pwd -P >| '/c/Users/User Name/AppData/Local/Temp/claude-XXXX-cwd'

Note: the shell-snapshot source path IS correctly quoted with single quotes — only the cwd redirect path is missing quotes.

Environment

• OS: Windows 11 Pro
• Shell: Git Bash (MINGW64)
• Username: Contains a space
• Claude Code model: claude-opus-4-6

Evidence

From ps -ef output showing the constructed command:

/usr/bin/bash -c source '/c/Users/User Name/.claude/shell-snapshots/snapshot-bash-XXXX.sh' && shopt -u extglob 2>/dev/null || true && eval '...' && pwd -P >|
/c/Users/User Name/AppData/Local/Temp/claude-XXXX-cwd

The source path is quoted ✅
The >| redirect path is NOT quoted ❌

What Should Happen?

The temp file path in the pwd -P >| redirect should be quoted to handle paths with spaces. For example:
pwd -P >| '/c/Users/User Name/AppData/Local/Temp/claude-XXXX-cwd'
This would match the existing behavior of the source command in the same line, which already quotes the path correctly.

Error Messages/Logs

/usr/bin/bash: line 1: /c/Users/User: Permission denied

Steps to Reproduce

1. Use Claude Code on Windows (Git Bash / MINGW64) with a username that contains a space (e.g., "User Name")
2. Run any Bash tool command (e.g., echo "hello")
3. The error /usr/bin/bash: line 1: /c/Users/User: Permission denied appears after every command

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.69

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_