21.7.4 Keyword Procedures
The following procedures can be used for converting symbols to keywords
and back.
— Scheme Procedure:
symbol->keyword symbol
Return a keyword with the same characters as in sym.
— Scheme Procedure:
keyword->symbol kw
Return a symbol with the same characters as in kw.
If module (ice-9 optargs-kw) is too heavyweight,
you can use kw-arg-ref for basic functionality.
— Scheme Procedure:
kw-arg-ref args kw
Return the element of list args immediately following
kw, if available. Otherwise return #f.