I’m trying to polish the rough edges of SRFI 231, and instead of, e.g.,

(make-interval ‘#(0 3 0) ‘#(4 6 2))

with the lower bounds ‘#(0 3 0) and upper bounds ‘#(4 6 2) where an interval argument is required, I plan to allow

‘#(4 (3 6) 2)

Currently, I’m calling this an interval “specifier”.

I’m just throwing this idea into the mix.

Brad