[BUG] Bash tool broken on Windows when username contains apostrophe

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?

The Bash tool fails for every command when the Windows username path contains an apostrophe (e.g., C:\Users\Matt's PC). Every command returns:

/usr/bin/bash: -c: line 1: unexpected EOF while looking for matching '
Even simple commands like echo test or ls fail. The apostrophe in the path is being interpreted as an unmatched single quote by bash.

Environment:

Windows 11 Pro 10.0.26200
Claude Code running inside Windsurf (VS Code fork)
Git Bash provides /usr/bin/bash
Username path: C:\Users\Matt's PC
Attempted workarounds (none worked):

Set CLAUDE_CODE_SHELL env variable to powershell.exe (user-level and project-level settings.json)
Set HOME env variable to a path without apostrophe
Project-level .claude/settings.local.json with env overrides
Restarting the IDE multiple times

What Should Happen?

Expected behavior:
Either bash should properly escape paths with special characters, or the CLAUDE_CODE_SHELL setting should work in the Windsurf extension to allow switching to PowerShell.

Impact:
Complete inability to use the Bash tool. All shell commands fail regardless of content.

Error Messages/Logs

/usr/bin/bash: -c: line 1: unexpected EOF while looking for matching `'`
/usr/bin/bash: -c: line 1: unexpected EOF while looking for matching `'`
Exit code 2

Steps to Reproduce

Steps to reproduce:

Have a Windows user account with an apostrophe in the name (e.g., Matt's PC)
Install Claude Code in Windsurf (or VS Code)
Open any project
Try to run any Bash tool command — even echo test

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.69 (Claude Code)

Platform

AWS Bedrock

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Windows username contains an apostrophe: C:\Users\Matt's PC

This causes Git Bash (/usr/bin/bash) to fail on EVERY command with:
/usr/bin/bash: -c: line 1: unexpected EOF while looking for matching '

Even echo test fails. The apostrophe in the user profile path is interpreted as an unmatched single quote.

Workarounds attempted (none worked):

• CLAUDE_CODE_SHELL env var set to powershell.exe (user-level + project-level settings.json)
• HOME env var set to path without apostrophe
• 8.3 short path also contains apostrophe (MATT'S~1)
• Multiple restarts of IDE

Claude Code version: Windsurf extension
Model: claude-opus-4-6
OS: Windows 11 Pro 10.0.26200