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

---
 vscm.init | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

(limited to 'vscm.init')

diff --git a/vscm.init b/vscm.init
index d005c7e..d6e48d3 100644
--- a/vscm.init
+++ b/vscm.init
@@ -55,11 +55,15 @@
 ;;; (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/local/src/scheme/")
-    ((vms)	"scheme$src:")
-    ((ms-dos)	"C:\\scheme\\")))
+(define implementation-vicinity
+  (let ((impl-path
+	 (or (getenv "VSCM_IMPLEMENTATION_PATH")
+	     (case (software-type)
+	       ((unix) "/usr/local/src/scheme/")
+	       ((vms) "scheme$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.
@@ -123,8 +127,7 @@
 ;@
 (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)))))
@@ -164,6 +167,7 @@
 					;(SLIB:LOAD-COMPILED "filename")
 	vicinity
 	srfi-59
+	srfi-96
 		       ;; Scheme report features
    ;; R5RS-compliant implementations should provide all 9 features.
 
@@ -171,7 +175,7 @@
 ;;;	eval				;R5RS two-argument eval
 	values				;R5RS multiple values
 ;;;	dynamic-wind			;R5RS dynamic-wind
-;;;	macro				;R5RS high level macros
+	macro				;R5RS high level macros
 	delay				;has DELAY and FORCE
 	multiarg-apply			;APPLY can take more than 2 args.
 ;;;	char-ready?
@@ -206,7 +210,7 @@
 
 			;; 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.
@@ -387,10 +391,6 @@
 ;;; 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)
@@ -427,7 +427,6 @@
 
 (define (defmacro:load <pathname>)
   (slib:eval-load <pathname> defmacro:eval))
-;; slib:eval-load definition moved to "require.scm"
 
 (define slib:warn
   (lambda args
@@ -486,4 +485,12 @@
 ;;; 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:load (in-vicinity (library-vicinity) "require"))
-- 
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