Spacer (spacer)

The spacer widget will fill out any remaining space within a widget.

Example

border
    hstack
        text "Hi"
        spacer

┌─────────────────────────┐
│Hi                       │
└─────────────────────────┘

without the spacer:

border
    hstack
        text "Hi"

┌──┐
│Hi│
└──┘