Claude Code /terminal-setup: Fix Shift+Enter Line Breaks in One Step

When you write long instructions in Claude Code (an AI coding tool used in the terminal), there are times you want to break to a new line. But you've probably had the experience of pressing Shift+Enter only to have the message sent instead of creating a line break. The command to run just once for this is /terminal-setup.

Definition (What It Is)

/terminal-setup is a command that configures your terminal so you can use shortcuts like Shift+Enter.

Each terminal (the program where you type commands into a black screen) handles key input a little differently. So in some environments, Shift+Enter gets treated as "send" rather than "line break." /terminal-setup automatically adjusts the terminal settings so Claude Code recognizes these keys as intended.

How to Use It (By Difficulty)

Basic — Run It Once

With Claude Code running, type this directly into the input box.

/terminal-setup

Running it applies the shortcut settings to your current terminal. Usually you only need to do it once, and after that Shift+Enter works fine for line breaks. If the effect doesn't show right away, try closing and reopening the terminal.

Common Pitfalls (When Applicable)

• Results can vary slightly by environment, such as the VS Code built-in terminal, iTerm, or Windows Terminal. Configuring it in one environment doesn't automatically apply to other terminals. It's safest to run it in each terminal you mainly use.
• If line breaks still don't work after setup, the terminal's own key bindings (settings that link functions to keys) may be intercepting Shift+Enter. In that case, you need to resolve the shortcut conflict in your terminal settings.

Real-World Example

Picture being frustrated trying to write a multi-line prompt in the VS Code terminal because line breaks wouldn't work. After running /terminal-setup once, you can naturally move to new lines with Shift+Enter and write long instructions.

Taking It Further

Once key input becomes comfortable, you can write prompts more structurally. For example, if you split lines like "Line 1: goal / Line 2: constraints / Line 3: example," the AI understands your instructions more accurately. Just setting up an environment where line breaks work well already improves your work quality.

Summary

/terminal-setup is an initial setup command that aligns your terminal so shortcuts like Shift+Enter line breaks work properly. If you've just installed Claude Code, we recommend running it once. When input becomes comfortable, your work flows more smoothly too.

Based on: Claude Code v2.1.154 (2026.05)