codex - 💡(How to fix) Fix /copy does not work inside tmux [1 participants]

TL;DR

The /copy command issue in Codex CLI within tmux may be related to compatibility or environment variables, and checking the environment configuration could help resolve the problem.

Guidance

• Verify that the CODEX_CLI environment variables are set correctly within the tmux session, as this might affect the functionality of the /copy command.
• Try running the Codex CLI command directly in the Powershell terminal (outside of tmux) to see if the issue persists, which can help determine if the problem is specific to the tmux environment.
• Check the tmux configuration file (usually ~/.tmux.conf) for any settings that might interfere with the Codex CLI or its ability to access the system clipboard.
• Consider testing the /copy command with a different model or prompt to see if the issue is specific to the gpt-5.5 model or a particular input.

Notes

The issue seems to be specific to the interaction between Codex CLI, tmux, and the Powershell terminal, and resolving it may require adjusting environment variables or configurations within these tools.

Recommendation

Apply workaround: Given the complexity of the environment and the tools involved, applying a workaround such as running Codex CLI outside of tmux or adjusting the environment variables within tmux might be the most straightforward approach to resolve the /copy command issue.