codex - 💡(How to fix) Fix Repeated ESC[0 q cursor reset in Codex v0.129.0 causes constant flicker under Emacs Eat

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Root Cause

Codex CLI v0.129.0 repeatedly emits CSI 0 SP q / ESC[0 q in the TUI. Under Emacs Eat, this causes constant visible flicker because Eat treats it as a cursor-style reset. Filtering only ESC[0 q at the Codex/Eat boundary eliminates the flicker completely; running the same session unpatched flickers constantly. Codex CLI v0.128.0 did not exhibit this behavior.

Fix Action

Fix / Workaround

Codex CLI v0.129.0 repeatedly emits CSI 0 SP q / ESC[0 q in the TUI. Under Emacs Eat, this causes constant visible flicker because Eat treats it as a cursor-style reset. Filtering only ESC[0 q at the Codex/Eat boundary eliminates the flicker completely; running the same session unpatched flickers constantly. Codex CLI v0.128.0 did not exhibit this behavior.

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What version of Codex CLI is running?

codex-cli 0.129.0

What subscription do you have?

Pro

Which model were you using?

gpt-5.5

What platform is your computer?

Darwin 25.4.0 arm64 arm

What terminal emulator and version are you using (if applicable)?

Emacs Eat mode

What issue are you seeing?

Codex CLI v0.129.0 repeatedly emits CSI 0 SP q / ESC[0 q in the TUI. Under Emacs Eat, this causes constant visible flicker because Eat treats it as a cursor-style reset. Filtering only ESC[0 q at the Codex/Eat boundary eliminates the flicker completely; running the same session unpatched flickers constantly. Codex CLI v0.128.0 did not exhibit this behavior.

What steps can reproduce the bug?

Run Codex CLI under Emacs eat mode.

What is the expected behavior?

No response

Additional information

No response

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codex - 💡(How to fix) Fix Repeated ESC[0 q cursor reset in Codex v0.129.0 causes constant flicker under Emacs Eat