codex - 💡(How to fix) Fix The full patch hit the Windows command-length limit [1 comments, 2 participants]

It can write/edit/remove any number of lines or chars to a new file or within an existing one without ever hitting this error and causing countless wasted turns and tokens

TL;DR

• The issue may be resolved by modifying the command or file editing process to handle large file contents without hitting the arbitrary character limit.

Guidance

• Investigate the file editing process in the Codex CLI to determine if there's a way to pass file contents more efficiently, rather than literally as part of the command.
• Consider implementing a workaround that splits large file contents into smaller chunks, allowing the chat to edit files without exceeding the character limit.
• Review the documentation for the gpt-5.4 high model to see if there are any specific guidelines or limitations for handling large file inputs.
• Test the chat's file editing functionality with smaller file sizes to determine if the issue is indeed related to the character limit.

Example

• No clear example is available without more information on the Codex CLI's file editing process.

Notes

• The issue may be specific to the gpt-5.4 high model or the Codex CLI version 0.118.0, and may not be reproducible with other models or versions.
• The character limit may be a hardcoded value or a limitation of the underlying file system or terminal emulator.

Recommendation

• Apply workaround: The issue is likely due to the arbitrary character limit, and implementing a workaround to handle large file contents may be the most effective solution until a fixed version of the Codex CLI is available.