Hello, Manuel, I am porting SRFI-42 (Eager Comprehensions) to Bigloo. In doing this, I ran into a couple of problems. The first was that the default implementation assumes that identifiers can start with colons (:) and this is not true for Bigloo; keywords start or end with a colon. I was able to address this in the manner Alex Shinn did in his gauche implementation of SRFI-42 by renaming. The next problem I ran into was a syntax-rules expansion problem. Due to the continuation passing style of the macros being used, symbols were being multiply prepended with the hygiene-mark (|hygiene.r5rs.mark|) but the current definition of hygiene-value only strips off a single instance of the hygiene-mark. I was able to work around this by changing the definition of hygiene-value to strip all occurrences of hygiene-mark not just the first. See below. However, I am not sure that this is correct from a hygiene perspective or not. Does this definition of hygiene-value call problems.
(define (hygiene-value x) (if (not (symbol? x)) x (let ((s (symbol->string x))) (let loop ((s s)) (if (substring-at? s hygiene-prefix 0) (loop (substring s hygiene-prefix-len (string-length s))) (string->symbol s)))))) Thank You,Joseph Donaldson
