From 4684239efa63dc1b2c1cbe37ef7d3062029f5532 Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Mon, 20 Feb 2017 00:05:40 -0800
Subject: Import Upstream version 3b1

---
 RScheme.init | 49 +++++++++++++++++++++++++------------------------
 1 file changed, 25 insertions(+), 24 deletions(-)

(limited to 'RScheme.init')

diff --git a/RScheme.init b/RScheme.init
index 87aacdb..a9607f4 100644
--- a/RScheme.init
+++ b/RScheme.init
@@ -31,11 +31,15 @@
 ;;; the directory where any auxillary files to your Scheme
 ;;; implementation reside.
 
-(define (implementation-vicinity)
-  (case (software-type)
-    ((unix)	 "/usr/local/lib/rs/0.7.1/")
-    ((vms)	"scheme$src:")
-    ((ms-dos)	"C:\\scheme\\")))
+(define implementation-vicinity
+  (let ((impl-path
+	 (or (getenv "RSCHEME_IMPLEMENTATION_PATH")
+	     (case (software-type)
+	       ((unix) "/usr/local/lib/rs/0.7.1/")
+	       ((vms) "scheme$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.
@@ -103,8 +107,7 @@
 ;@
 (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)))))
@@ -144,6 +147,7 @@
 					;(SLIB:LOAD-COMPILED "filename")
 	vicinity
 	srfi-59
+	srfi-96
 
 		       ;; Scheme report features
    ;; R5RS-compliant implementations should provide all 9 features.
@@ -187,11 +191,11 @@
 
 			;; 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
@@ -283,14 +287,6 @@
 ;;; Return argument
 ;;(define (identity x) x)
 
-;;; If your implementation provides eval SLIB:EVAL is single argument
-;;; eval using the top-level (user) environment.
-(define slib:eval eval)
-
-;;; If your implementation provides R4RS macros:
-;(define macro:eval slib:eval)
-;(define macro:load load)
-
 (define *defmacros*
   (list (cons 'defmacro
 	      (lambda (name parms . body)
@@ -320,14 +316,14 @@
       (string->symbol
        (string-append "slib:G" (number->string *gensym-counter*))))))
 
-(define base:eval slib:eval)
-(define (defmacro:eval x) (base:eval (defmacro:expand* x)))
+;;; SLIB:EVAL is single argument eval using the top-level (user)
+;;; environment.
+(define slib:eval eval)
+(define (defmacro:eval x) (eval (defmacro:expand* x)))
 (define (defmacro:expand* x)
   (require 'defmacroexpand) (apply defmacro:expand* x '()))
-
 (define (defmacro:load <pathname>)
   (slib:eval-load <pathname> defmacro:eval))
-;; slib:eval-load definition moved to "require.scm"
 
 (define slib:warn
   (lambda args
@@ -372,17 +368,22 @@
 
 ;;; (SLIB:LOAD-SOURCE "foo") should load "foo.scm" or with whatever
 ;;; suffix all the module files in SLIB have.  See feature 'SOURCE.
-
 (define (slib:load-source f) (load (string-append f ".scm")))
 
 ;;; (SLIB:LOAD-COMPILED "foo") should load the file that was produced
 ;;; by compiling "foo.scm" if this implementation can compile files.
 ;;; See feature 'COMPILED.
-
 (define slib:load-compiled load)
 
 ;;; At this point SLIB:LOAD must be able to load SLIB files.
-
 (define slib:load slib:load-source)
 
+;;; If your implementation provides R4RS macros:
+;;(define macro:eval slib:eval)
+;;(define macro:load load)
+
+;;; 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"))
-- 
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