Pressing Ctrl+C in input field outputs ANSI escape sequences/garbled text

[nibaijing]

Description

Environment:

Application: opencode (Sisyphus)

Shell: Windows PowerShell

OS: Windows 11

Model: gemini-1.5-flash-8b

Description: When attempting to use the Ctrl+C keyboard shortcut within the opencode input field (specifically while using the Sisyphus interface), the terminal outputs a long string of garbled ANSI escape codes (e.g., [555;20;24M...) instead of copying text or sending an interrupt signal.

Steps to Reproduce:

Open opencode in a Windows PowerShell terminal.

Navigate to the input/chat box.

Press Ctrl+C.

Observe the garbled text outputting at the command prompt.

Expected Behavior: The shortcut should either copy the selected text or clear the current input line without printing raw terminal escape sequences.

Actual Behavior: A long string of numeric ANSI codes is printed to the terminal, making the interface difficult to use and cluttering the command line.

Plugins

oh-my-opencode

OpenCode version

No response

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Ctrl+C does not disable mouse tracking, causing raw escape sequences to flood terminal (Windows) #6912: Ctrl+C does not disable mouse tracking, causing raw escape sequences to flood terminal (Windows) - Same symptoms with raw escape sequences appearing on Windows
• In the Windows system, pressing Ctrl+C will automatically exit the terminal #6189: In the Windows system, pressing Ctrl+C will automatically exit the terminal - Related Windows Ctrl+C behavior issue
• Input sometimes starts to only show ASCII escape codes #5181: Input sometimes starts to only show ASCII escape codes - Similar issue with ASCII/ANSI escape codes appearing in input

Feel free to ignore if none of these address your specific case.