- extension-type-mapparameter
Case-insensitive map of file extension (as symbol) to 1-character Gopher entry type (as symbol).
(define extension-type-map (make-parameter `((txt . 0) (log . 0) (scm . 0) (sgm . 0) (c . 0) (h . 0) (png . I) (gif . g) (jpg . I) (svg . I))))