with_termbox: Evaluate an expression in a temporary termbox
In richfitz/boxr: Interface to 'termbox'

Evaluate an expression while keeping termbox open, being sure to close it down even on error.

1	with_termbox(expr, try = TRUE)

`expr`	An expression to evaluate. Don't call `tb_init` or `tb_shutdown` yourself as they'll be called within the `with_termbox` block. Don't forget to run `tb_present` or likely nothing will be shown.
`try`	Evaluate `expr` within a `try` block? This can help with debugging and error detection, which is generally tricky because stderrr is generally lost during this process.