[Bug] Git Bash PATH format mismatch on Windows prevents command execution

[roeia-claude]

Bug Description
The Problem

Claude Code on Windows with Git Bash has a PATH format mismatch.

What Claude Code Does

1. Captures shell environment at startup into a "snapshot" file
2. Before each command, it runs: source snapshot.sh;
3. The snapshot contains export PATH='C:\Windows...;C:\Program Files...' (Windows format)

Why It Fails

Git Bash uses Unix-style paths for command lookup:

• /mingw64/bin/git.exe ✓
• C:\Program Files\Git\mingw64\bin\git.exe ✗

Even though git.exe exists and PATH contains the right directory, bash can't find it because:
PATH="C:\Program Files\Git\mingw64\bin" ← bash doesn't understand this
PATH="/mingw64/bin" ← bash understands this

The Flow (Before Fix)

1. Claude Code runs: bash -c "source snapshot.sh; git --version"
2. snapshot.sh does: export PATH="C:\Windows;C:\Program Files\Git..."
3. bash tries to find 'git' using Windows paths
4. FAILS: "git: command not found"

The Fix

The wrapper (bash-wrapper.sh) injects a PATH conversion after the snapshot:

Original command from Claude Code:

source snapshot.sh; git --version

Wrapper transforms it to:

source snapshot.sh; export PATH="$(/usr/bin/cygpath -p -u "$PATH")"; git --version

cygpath -p -u converts Windows PATH to Unix PATH:
C:\Program Files\Git\mingw64\bin → /mingw64/bin

The Flow (After Fix)

1. Claude Code runs: wrapper.sh "source snapshot.sh; git --version"
2. Wrapper injects PATH fix after source
3. snapshot.sh sets: PATH="C:\Windows;..."
4. PATH fix converts: PATH="/c/Windows:/mingw64/bin:..."
5. bash finds 'git' at /mingw64/bin/git
6. SUCCESS: "git version 2.52.0.windows.1"

Environment Info

• Platform: win32
• Terminal: WezTerm
• Version: 2.1.2
• Feedback ID: 40998d63-48ab-4b3f-b17f-3dded210d681

Errors

[{"error":"SyntaxError: JSON Parse error: Unexpected identifier \"C\"\n    at <parse> (:0)\n    at parse (unknown)\n    at <anonymous> (B:/~BUN/root/claude.exe:77:708)\n    at A (B:/~BUN/root/claude.exe:11:7245)\n    at <anonymous> (B:/~BUN/root/claude.exe:5002:274)\n    at <anonymous> (B:/~BUN/root/claude.exe:4992:8847)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-09T15:56:07.796Z"},{"error":"Error: EPERM: operation not permitted, symlink 'C:\\Users\\Roei\\.claude\\projects\\C--Users-Roei-Projects-claude-task-system\\8241966f-a5f4-4ede-8a48-10dccd495cd7\\subagents\\agent-a59b6be.jsonl' -> 'C:\\Users\\Roei\\AppData\\Local\\Temp\\claude\\C--Users-Roei-Projects-claude-task-system\\tasks\\a59b6be.output'\n    at symlinkSync (unknown)\n    at LXH (B:/~BUN/root/claude.exe:1610:9858)\n    at ZyD (B:/~BUN/root/claude.exe:1712:1306)\n    at <anonymous> (B:/~BUN/root/claude.exe:3103:22043)\n    at <anonymous> (B:/~BUN/root/claude.exe:3103:24137)\n    at run (node:async_hooks:62:22)\n    at lsH (B:/~BUN/root/claude.exe:185:14284)\n    at call (B:/~BUN/root/claude.exe:3103:21765)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-09T15:56:08.901Z"},{"error":"Error: EPERM: operation not permitted, symlink 'C:\\Users\\Roei\\.claude\\projects\\C--Users-Roei-Projects-claude-task-system\\8241966f-a5f4-4ede-8a48-10dccd495cd7\\subagents\\agent-a307e9f.jsonl' -> 'C:\\Users\\Roei\\AppData\\Local\\Temp\\claude\\C--Users-Roei-Projects-claude-task-system\\tasks\\a307e9f.output'\n    at symlinkSync (unknown)\n    at LXH (B:/~BUN/root/claude.exe:1610:9858)\n    at ZyD (B:/~BUN/root/claude.exe:1712:1306)\n    at <anonymous> (B:/~BUN/root/claude.exe:3103:22043)\n    at <anonymous> (B:/~BUN/root/claude.exe:3103:24137)\n    at run (node:async_hooks:62:22)\n    at lsH (B:/~BUN/root/claude.exe:185:14284)\n    at call (B:/~BUN/root/claude.exe:3103:21765)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-09T15:56:08.918Z"},{"error":"Error: EPERM: operation not permitted, symlink 'C:\\Users\\Roei\\.claude\\projects\\C--Users-Roei-Projects-claude-task-system\\8241966f-a5f4-4ede-8a48-10dccd495cd7\\subagents\\agent-af5dadc.jsonl' -> 'C:\\Users\\Roei\\AppData\\Local\\Temp\\claude\\C--Users-Roei-Projects-claude-task-system\\tasks\\af5dadc.output'\n    at symlinkSync (unknown)\n    at LXH (B:/~BUN/root/claude.exe:1610:9858)\n    at ZyD (B:/~BUN/root/claude.exe:1712:1306)\n    at <anonymous> (B:/~BUN/root/claude.exe:3103:22043)\n    at <anonymous> (B:/~BUN/root/claude.exe:3103:24137)\n    at run (node:async_hooks:62:22)\n    at lsH (B:/~BUN/root/claude.exe:185:14284)\n    at call (B:/~BUN/root/claude.exe:3103:21765)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-09T15:56:08.934Z"}]

[github-actions]

Found 2 possible duplicate issues:

1. [BUG] Shell snapshots export empty PATH on Windows (Git Bash), breaking command execution #15128
2. [BUG] Claude Code Bash tool incompatible with MSYS/Git Bash on Windows (requires cygpath) #9883

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🤖 Generated with Claude Code

[oinani0721]

This is exactly the issue I fixed. PR Ready: anthropics/claude-plugins-official#127 - Includes cygpath conversion for Windows PATH to Unix PATH. Also fixes PATH (cat/jq not found), UTF-8 encoding, output format, and race conditions. Tested on Windows 11. See #16377 for details.

[github-actions]

This issue has been inactive for 30 days. If the issue is still occurring, please comment to let us know. Otherwise, this issue will be automatically closed in 30 days for housekeeping purposes.

[github-actions]

Closing for now — inactive for too long. Please open a new issue if this is still relevant.

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.