Command history

Every command you run is remembered, and there are three ways back to one: the ↑/↓ arrows, ghost-text suggestions as you type, and the Ctrl+R picker. You can also click any past prompt line (❯ <command>) in the transcript to run it again immediately — drag-selecting its text still just copies.

Arrow-key recall

↑ walks backward through the current tab's history, most recent first; ↓ walks forward again. Stepping past the newest entry clears the input line. Each recalled command lands on the input line with the cursor at the end, ready to edit or run.

Ghost text

When what you've typed is the prefix of a past command, the rest of the most recent match appears after the cursor as greyed ghost text:

Press → or End at the end of your typed text to accept the whole suggestion. Any other key leaves it alone — keep typing and the suggestion narrows or disappears. Matching is case-sensitive, and ghost suggestions draw on your history from all tabs and previous runs, so a command you typed anywhere can complete everywhere.

The Ctrl+R picker

Ctrl+R (or the hist command) opens a window listing the tab's recent commands, most recent at the bottom, just above the command bar:

↑/↓ move the selection, Return runs the selected command, Escape closes without running anything. A row can also be clicked. With no history yet, the window shows (no history).

What's kept, and where

History is per-tab: each tab records its own commands (up to 100; older entries fall off), and that's what arrow-key recall and the picker show. Running the same command twice in a row stores it once. Per-tab history persists with the agent's state, so it survives janus --relaunch.

There's also a global history spanning all tabs and all runs, capped at 1000 entries and stored in your home directory — that's what ghost text draws from. The split is deliberate: recall and the picker answer "what was I doing in this tab," while ghost text answers "how did I last type this command anywhere."