Codex TUI prompt Feature: Shift+Enter to support newline in codex interactive prompt

[NikkiAung]

What feature would you like to see?

Support Shift+Enter to insert a newline in the interactive TUI prompt (multi‑line input without submitting).

Proposal :

Keybinding Shift+Enter should insert a newline. At the same time, when there is no text/prompt in the codex interactive TUI, it should disable Shift+Enter to avoid accidental blank lines; spacing tokenization percentage cost.

Problem :

As of now, when users wanna enter newline with Shift+Enter, it's just prompting to AI Codex, not going to newline. This could be annoyance to users with large prompt willing to go to next new line.

Additional information

Demo of Shift+Enter not entering new line. :)

trim.2B14A6B1-7766-4F2C-98C8-83FD18DB92B3.MOV

[NikkiAung]

@etraut-openai, feel free to lmk about my proposal! Im super excited to contribute! :)

[etraut-openai]

Codex needs to run in many different terminal emulators and across multiple platforms. Earlier versions of Codex supported Shift+Enter, but this caused problems with many terminal emulators. After investigating potential solutions, we switched to Ctrl+J as the key binding for entering newlines. This works across all terminals and platforms.

[SocialNerd42069]

bring back shift + enter! ctrl+j is annoying

[NikkiAung]

Also feeling the same way, but this also applied in Claude Code CLI. Hopefully, they would bring back in future! :))

Lmk what u guys think of the below feat as well, @SocialNerd42069 and @faev999!

#8709

[ropl-btc]

bring back shift + enter! ctrl+j is annoying

we should at least be able to choose between the two (or have both ideally). maybe allowing for custom keybindings would help a lot here.

shift+enter is also still highlighted as the command still when using ? to show the shortcuts (using TUI2).

[louisprince]

Codex needs to run in many different terminal emulators and across multiple platforms. Earlier versions of Codex supported Shift+Enter, but this caused problems with many terminal emulators. After investigating potential solutions, we switched to Ctrl+J as the key binding for entering newlines. This works across all terminals and platforms.

That's fair enough, keep Ctrl+J as the default.

Please add the option to change newline to Shift + Enter for those of us who's terminals emulators allow us to do that.

[Rockio-sy]

Avoid Control Button Please!

If supporting Shift+Enter is difficult, then please consider Option+Enter or Command+Shift+Enter instead. Ctrl+J is a really poor choice.
What happens if, for some reason, the same developer ends up using Codex on both Ubuntu and macOS in the future?
At the very least, Command+J would be a better option.
The Ctrl key is disliked by many macOS users :)

[rzalawad]

I just paid for the subscription. I can't believe this is the key binding! ctrl+j for me is down arrow because of vim bindings. who chooses these things?

[drewbailey]

@etraut-openai please make this mappable.. ctrl-j is not tmux friendly