Command history panel
A togglable side panel lists every committed operation with a human label, the cells it touched, and a timestamp; clicking an entry reverts the document to that state.
What it does
A togglable History panel (the clock-arrow icon at the right of the toolbar) lists every committed operation — typed edits, fills, pastes, clears, and every formatting toggle — as a labeled row: a human-readable story ("Bold on B2", "Filled A2:A5"), the affected cell(s) in monospace, and a timestamp. Clicking a row reverts the document to that state and highlights what changed. The log isn't persisted across reloads yet.
The panel is fully keyboard-operable: opening it moves keyboard focus into the panel, so Tab walks straight to Close and then to each row's Restore button, and closing it hands focus back to the toolbar button that opened it. It is still not modal — the grid stays live and interactive beside it, and Tab keeps walking out of the panel into the rest of the page.
Verified behavior
Matches Google Sheets: Google Sheets has a Version History feature (File > Version history), but it operates on named SNAPSHOTS of the whole spreadsheet at a point in time — it does not list individual operations (each keystroke, each formatting toggle) as discrete, clickable, labeled entries the way this panel does. There is no Sheets equivalent to reproduce: this is a TrueCalc-original feature, built from the Store's own command log rather than replicated oracle behavior.
An edit and a bold each add one entry to the command log
Given
- A1 =
10
When I type 20 into A2, then click A2, then press Control+b
Then
- A2 shows
20 - A2 is bold
Undoing a command removes it from the visible (committed) log
Given
- A1 =
10
When I type 20 into A2, then undo
Then
- A2 shows
null
Opening the panel moves keyboard focus into it, so Close and Restore are reachable
Given
- A1 =
10
When I click toolbar-history
Then
- keyboard focus is inside
[data-testid="history-panel"]
Closing the panel hands keyboard focus back to the button that opened it
Given
- A1 =
10
When I click toolbar-history, then click history-panel-close
Then
- keyboard focus is inside
[data-testid="toolbar-history"]
Clear formatting + Paint format
Ctrl+\ (or the toolbar "Tx" button) resets a range's format to default without touching its value; the toolbar Paint format roller copies one range's full format onto another (single click = one-shot, double click = sticky until Escape or re-clicking the roller).
Import data (CSV, TSV, custom separator, XLSX)
Bring an external file into the grid — delimited text or a spreadsheet — with values, dates, and formulas coming in through the same coercion as typing, as one undoable step.