If {g,b}:r7rs_use_strict is true, this option is disabled. One may want to write portable Scheme program using strict R7RS syntax and SRFIs.
If {g,b}:r7rs_use_gauche is true, this option is enabled since Gauche supports a lot of SRFIs.
This option is questionable. Since there are many people not using Gauche, r7rs_use_gauche option is valuable. On the other hand, is there anyone who want to disable SRFI features?
IfOne may want to write portable Scheme program using strict R7RS syntax and SRFIs. If{g,b}:r7rs_use_strict
is true, this option is disabled.{g,b}:r7rs_use_gauche
is true, this option is enabled since Gauche supports a lot of SRFIs.