repl

README

Shell/REPL Example (The Infinite Loop)

This example demonstrates a interactive command-line application (a "Shell") that uses Escalation Mode to capture Ctrl+C without quitting.

It showcases:

• Interrupt Capturing: Ctrl+C emits a ClearLineEvent instead of cancelling the context.
• Input Resilience: The input reader remains active on Windows even after multiple interruputs.
• Custom Shutdown Commands: Explicitly handling exit or quit to trigger a graceful shutdown.
• Force Exit Safety Net: Mashing Ctrl+C N times will still kill the process if it hangs.

🎮 Controls

• Ctrl+C (1st to N-1th): Clears the current line (emits lifecycle/clear-line).
• Ctrl+C (N-th): Force Exit (Immediate Kill).
• exit / quit: Graceful shutdown.

Implementation

See main.go for the full implementation, specifically:

• lifecycle.WithForceExit(3): Configures the shell to allow 2 "clears" and kill on the 3rd interrupt.
• router.HandleFunc("lifecycle/clear-line", ...): UI reaction to the interrupt.