diff options
Diffstat (limited to 'elk.init')
| -rw-r--r-- | elk.init | 40 |
1 files changed, 24 insertions, 16 deletions
@@ -35,11 +35,15 @@ ;;; (implementation-vicinity) should be defined to be the pathname of ;;; the directory where any auxillary files to your Scheme ;;; implementation reside. -(define (implementation-vicinity) - (case (software-type) - ((unix) "/usr/share/elk/") - ((vms) "scheme$src:") - ((ms-dos) "C:\\scheme\\"))) +(define implementation-vicinity + (let ((impl-path + (or (getenv "ELK_IMPLEMENTATION_PATH") + (case (software-type) + ((unix) "/usr/share/elk/") + ((vms) "scheme$src:") + ((ms-dos) "C:\\scheme\\") + (else ""))))) + (lambda () impl-path))) ;;; (library-vicinity) should be defined to be the pathname of the ;;; directory where files of Scheme library functions reside. @@ -107,8 +111,7 @@ ;@ (define sub-vicinity (case (software-type) - ((vms) (lambda - (vic name) + ((vms) (lambda (vic name) (let ((l (string-length vic))) (if (or (zero? (string-length vic)) (not (char=? #\] (string-ref vic (- l 1))))) @@ -148,6 +151,7 @@ ;(SLIB:LOAD-COMPILED "filename") vicinity srfi-59 + srfi-96 ;; Scheme report features ;; R5RS-compliant implementations should provide all 9 features. @@ -191,11 +195,11 @@ ;; Other common features -;;; srfi ;srfi-0, COND-EXPAND finds all srfi-* +;;; srfi-0 ;srfi-0, COND-EXPAND finds all srfi-* sicp ;runs code from Structure and ;Interpretation of Computer ;Programs by Abelson and Sussman. -;;; defmacro ;has Common Lisp DEFMACRO + defmacro ;has Common Lisp DEFMACRO ;;; record ;has user defined data structures string-port ;has CALL-WITH-INPUT-STRING and ;CALL-WITH-OUTPUT-STRING @@ -217,9 +221,9 @@ ;------------ -(define program-arguments - (lambda () - (cons "undefined-program-name" (command-line-args)))) +(define (program-arguments) + (cons (symbol->string (scheme-implementation-type)) + (command-line-args))) ; EXACT? appears to always return #f which isn't very useful. ; Approximating it with INTEGER? at least means that some @@ -352,10 +356,6 @@ (define defmacro:eval slib:eval) (define defmacro:load load) -;;; If your implementation provides R4RS macros: -;(define macro:eval slib:eval) -;(define macro:load load) -;; slib:eval-load definition moved to "require.scm" (define slib:warn (lambda args @@ -432,4 +432,12 @@ ;;; At this point SLIB:LOAD must be able to load SLIB files. (define slib:load slib:load-source) ;WARNING: redefining LOAD +;;; If your implementation provides R4RS macros: +;;(define macro:eval slib:eval) +;;(define macro:load slib:load-source) + +;;; If your implementation provides syntax-case macros: +;;(define syncase:eval slib:eval) +;;(define syncase:load slib:load-source) + (slib:load (in-vicinity (library-vicinity) "require")) |