Feature: Emit OSC 133 shell integration sequences for terminal prompt jumping

Summary

Modern terminals (Ghostty, iTerm2, Kitty, WezTerm) support semantic shell integration via OSC 133 sequences. This enables:

• Jumping between prompts (e.g., Ctrl+Shift+J/K in Ghostty)
• Selecting entire command output with a single click
• Scrolling to previous/next prompt
• Better terminal UI integration overall

Request

Could Claude Code emit these sequences around its REPL prompt?

\e]133;A\a  # Before showing the prompt (marks prompt start)
\e]133;C\a  # After user input, before execution (marks command start)
\e]133;D\a  # After output completes (marks output end)

Why This Matters

When using Claude Code for extended sessions, the terminal fills with many interactions. Being able to quickly jump between prompts (like you can with shell prompts) would significantly improve navigation.

Reference Implementation

Here's how shells typically implement this (from Ghostty's shell integration):

# Zsh example
_prompt_precmd() { print -n '\e]133;D\a\e]133;A\a' }
_prompt_preexec() { print -n '\e]133;C\a' }

Terminals That Support This

• Ghostty (native)
• iTerm2 (Shell Integration)
• Kitty
• WezTerm
• VS Code integrated terminal
• Windows Terminal

This is becoming a de-facto standard for terminal semantic zones.

Related

• Ghostty Shell Integration docs
• Semantic Prompts specification