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

---
 gambit.init | 48 +++++++++++++++++++++++++++---------------------
 1 file changed, 27 insertions(+), 21 deletions(-)

(limited to 'gambit.init')

diff --git a/gambit.init b/gambit.init
index e431160..dce1a07 100644
--- a/gambit.init
+++ b/gambit.init
@@ -34,19 +34,22 @@
 ;;; the directory where any auxillary files to your Scheme
 ;;; implementation reside.
 (define implementation-vicinity
-  (case (software-type)
-    ((unix)	(lambda () "/usr/local/share/gambc/"))
-    ((vms)	(lambda () "scheme$src:"))
-    ((ms-dos)	(lambda () "C:\\scheme\\"))
-    ((windows)  (lambda () "c:/scheme/"))
-    ((macos)
-     (let ((arg0 (list-ref (argv) 0)))
-       (let loop ((i (- (string-length arg0) 1)))
-	 (cond ((negative? i) "")
-	       ((char=? #\: (string-ref arg0 i))
-		(set! arg0 (substring arg0 0 (+ i 1)))
-		(lambda () arg0))
-	       (else (loop (- i 1)))))))))
+  (let ((impl-path
+	 (or (getenv "GAMBIT_IMPLEMENTATION_PATH")
+	     (case (software-type)
+	       ((unix) "/usr/local/share/gambc/")
+	       ((vms) "scheme$src:")
+	       ((ms-dos) "C:\\scheme\\")
+	       ((windows) "c:/scheme/")
+	       ((macos)
+		(let ((arg0 (list-ref (argv) 0)))
+		  (let loop ((i (- (string-length arg0) 1)))
+		    (cond ((negative? i) "")
+			  ((char=? #\: (string-ref arg0 i))
+			   (substring arg0 0 (+ i 1)))
+			  (else (loop (- i 1)))))))
+	       (else "")))))
+    (lambda () impl-path)))
 
 ;;; (library-vicinity) should be defined to be the pathname of the
 ;;; directory where files of Scheme library functions reside.
@@ -123,8 +126,7 @@
 ;@
 (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)))))
@@ -165,6 +167,7 @@
 					;(SLIB:LOAD-COMPILED "filename")
 	vicinity
 	srfi-59
+	srfi-96
 
 		       ;; Scheme report features
    ;; R5RS-compliant implementations should provide all 9 features.
@@ -208,7 +211,7 @@
 
 			;; 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.
@@ -347,10 +350,6 @@
 ;;; 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)
@@ -385,7 +384,6 @@
 
 (define (defmacro:load <pathname>)
   (slib:eval-load <pathname> defmacro:eval))
-;; slib:eval-load definition moved to "require.scm"
 
 (define print-call-stack identity)	;noop
 
@@ -441,6 +439,14 @@
 ;;; 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 slib:load-source)
+
+;;; If your implementation provides syntax-case macros:
+;;(define syncase:eval slib:eval)
+;;(define syncase:load slib:load-source)
+
 (slib:eval '(define-macro (defmacro name parms . body)
 	      (set! *defmacros* (cons `(cons ',name (lambda ,parms ,@body))
 				      *defmacros*))
-- 
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