[Windows] Diff highlighting not working in CLI mode #4544

Description

Description

Diff highlighting is not working when using OpenCode CLI on Windows. Changes and diffs are displayed without color highlighting, making it difficult to review code modifications.

Environment

• OpenCode version: 1.0.80
• OS: Windows 11 (or specify your version)
• Terminal: Windows Terminal 1.23.12811.0
• ANSI Support: Enabled (VirtualTerminalLevel = 1)
• Installation method: (npm/chocolatey/scoop - specify which one you used)

OpenCode version

1.0.80

Steps to reproduce

Steps to Reproduce

1. Open OpenCode in CLI mode on Windows using Windows Terminal
2. Make code changes or ask OpenCode to modify files
3. Observe the diff output

Expected Behavior

Diffs should display with syntax highlighting and color coding (additions in green, deletions in red, etc.)

Actual Behavior

Diffs are displayed without color highlighting - plain text output only

Additional Context

• Verified ANSI color support is enabled in Windows registry (VirtualTerminalLevel = 1)
• Using modern terminal emulator (Windows Terminal)
• OpenCode cache has been cleared (%USERPROFILE%.cache\opencode)
• Issue persists across different color schemes

Screenshot and/or share link

Operating System

Windows 11

Terminal

Windows Terminal 1.23.12811.0