Xiaofei-fei/dsh-prompt-history

Bash-like prompt history and right-click paste for the DSH web composer: Up / Down arrows recall previously submitted messages; right-click pastes the clipboard directly (terminal-style, like Linux).

Install

dsh plugin --profile web add dsh-prompt-history

Then refresh the page.

Usage

• Up: recall the previous submitted prompt (newest first), replacing the current draft; keep pressing Up to walk further back.
• Down: walk forward; at the bottom edge, restore the line you were typing before browsing began (readline pending-line behavior).
• Edit exits browsing: editing the draft while browsing drops back to the live line.
• Right-click pastes directly: a right-click on the composer textarea pastes the clipboard — no context menu, like a Linux terminal. Paste runs the same pipeline as Ctrl+V (images and reference chips behave identically), with a navigator.clipboard fallback when the execCommand path is blocked.
• Does not interfere: while the / or @ suggestion menu is open, arrow keys stay with menu navigation; IME composition, Shift+Up selection, Ctrl+Up word-jumps and other modifier chords are never intercepted; busy/removed sessions keep the browser's native right-click behavior.

Features

• History comes from the session's own message log: reads the conversation snapshot's user nodes (user / steering) and appends as they land — strictly consistent with the transcript, persisted with the session, survives page reloads, and needs no configuration or extra storage.
• Consecutive duplicates collapse; browse state resets on session switch.
• No UI, no settings; the client bundle is ~7 KB and depends only on the official @deepseek-ai/* peer packages.

Known limitations

• On a session switch, only the currently loaded event window's messages are recallable (everything submitted while the page is open is included); there is no host-side history fetch.
• Plain text only: image-only or chip-bearing messages are not recalled; recalled drafts are plain text.

Development

pnpm install
pnpm run typecheck   # tsc --noEmit
pnpm run build       # tsc (lib/types) + tsdown (lib/index.js / lib/invariant.js / lib/client.js)

The browser half (src/client/) registers into the conversation.input.right slot; the build emits the DSH __ModuleLoader__ closure format with react as the only external (everything else comes from the browser module table).

How it works

The plugin is an invisible composer slot entry that mounts a capture-phase keydown listener on the document. It takes over Up/Down only when the target is the composer textarea, no modifiers are held, no IME composition is active, no suggestion menu is open, and the session is not busy — then writes the recalled text through inputActions.setDraft. The history list is fed from the snapshot's user/steering nodes (deduped by seq); the browse position (index plus the pending line to restore) lives in component refs.

License

MIT