Splat

Splat is a macro processor inspired by escape-scheme, lips and guile-lips. Its main advantage over those is its support for @func(a1 a2 a3) syntax, which is preferable in this context (IMHO). Note that this does not remove the @(func a1 a2 a3) syntax, but expands upon it (@(lambda ...)(a1 a2 a3) is also valid).

Unlike lips (which supports a similar syntax), it does not require a call to an external procedure to read arguments and it uses Guile.

It is meant to be used in any file, not just Scheme code.

Here is an example:

Hello world!
2 + 2 = @(+ 2 2)
@(define (fact n)
 (case n
 ((0 1) 1)
 (else (* n (fact (- n 1))))))
Factorial definition:
0! = 1
1! = 1
n! = n * (n-1)!
10! is @fact(10)

Usage

splat < input > output