[Chicken-users] Inconsistencies with regexp package?

[shmul]

I understood from the reading the documentation of the regexp unit  that the 
either of the following calls should work

(string-split-fields (regexp "\\d+") "hello 1 cruel 23 world45")

(string-split-fields  "\\d+" "hello 1 cruel 23 world45")


However only the second version does, while the first signals and error:

Error: (string-split-fields) bad argument type - not a string: (:sub (:or (:seq 
(:between #f 1 #f :digit))))


on the other hand the string-match behaves differently with

(string-match-positions "\\d+" "hello 1 cruel 23 world45") returning #f

while 

(string-match-positions (regexp "\\d+") "hello 1 cruel 23 world45") returns 
((6 7))


Is this just incomplete documentation or an implementation problem?


Cheers,
Shmul