From 8466d8cfa486fb30d1755c4261b781135083787b Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Mon, 20 Feb 2017 00:05:29 -0800
Subject: Import Upstream version 3a1

---
 break.scm | 29 ++++++++++++-----------------
 1 file changed, 12 insertions(+), 17 deletions(-)

(limited to 'break.scm')

diff --git a/break.scm b/break.scm
index 4d18efc..d62eeb6 100644
--- a/break.scm
+++ b/break.scm
@@ -1,5 +1,5 @@
 ;;;; "break.scm" Breakpoints for debugging in Scheme.
-;;; Copyright (C) 1991, 1992, 1993, 1995 Aubrey Jaffer
+;;; Copyright (C) 1991, 1992, 1993, 1995, 2003 Aubrey Jaffer
 ;
 ;Permission to copy this software, to modify it, to redistribute it,
 ;to distribute modified versions, and to use it for any purpose is
@@ -8,7 +8,7 @@
 ;1.  Any copy made of this software must include this copyright notice
 ;in full.
 ;
-;2.  I have made no warrantee or representation that the operation of
+;2.  I have made no warranty or representation that the operation of
 ;this software will be error-free, and I am under no obligation to
 ;provide any services, by way of maintenance, update, or otherwise.
 ;
@@ -18,6 +18,7 @@
 ;each case.
 
 (require 'qp)
+(require 'alist)
 
 ;;;; BREAKPOINTS
 
@@ -29,8 +30,8 @@
 ;;; of breakpoint:continuation-stack and returns #f to it.
 
 (define breakpoint:continuation-stack '())
-
-(define debug:breakpoint
+;@
+(define breakpoint
   (let ((call-with-current-continuation call-with-current-continuation)
 	(apply apply) (qpn qpn)
 	(cons cons) (length length))
@@ -45,8 +46,8 @@
 		(debug:top-continuation
 		 (length breakpoint:continuation-stack))))))
 	(cond ((not (eq? ans breakpoint:continuation-stack)) ans))))))
-
-(define debug:continue
+;@
+(define continue
   (let ((null? null?) (car car) (cdr cdr))
     (lambda args
       (cond ((null? breakpoint:continuation-stack)
@@ -63,21 +64,17 @@
   (if (provided? 'abort)
       (lambda (val) (display val) (newline) (abort))
       (begin (display "; type (init-debug)") #f)))
-
+;@
 (define (init-debug)
   (call-with-current-continuation
    (lambda (x) (set! debug:top-continuation x))))
-
-(define breakpoint debug:breakpoint)
-(define bkpt debug:breakpoint)
-(define continue debug:continue)
-
+;@
 (define breakf
   (let ((null? null?)			;These bindings are so that
 	(not not)			;breakf will not break on parts
 	(car car) (cdr cdr)		;of itself.
 	(eq? eq?) (+ +) (zero? zero?) (modulo modulo)
-	(apply apply) (display display) (breakpoint debug:breakpoint))
+	(apply apply) (display display) (breakpoint breakpoint))
     (lambda (function . optname)
       ;; (set! trace:indent 0)
       (let ((name (if (null? optname) function (car optname))))
@@ -92,7 +89,7 @@
 
 ;;; the reason I use a symbol for debug:unbreak-object is so
 ;;; that functions can still be unbreaked if this file is read in twice.
-
+;@
 (define (unbreakf function)
   ;; (set! trace:indent 0)
   (function 'debug:unbreak-object))
@@ -101,7 +98,6 @@
 ;;; niceties like keeping track of breakd functions and dealing with
 ;;; redefinition.
 
-(require 'alist)
 (define break:adder (alist-associator eq?))
 (define break:deler (alist-remover eq?))
 
@@ -131,9 +127,8 @@
 	  ((eq? (cdr p) fun)
 	   (unbreakf fun))
 	  (else fun))))
-
 ;;;; Finally, the macros break and unbreak
-
+;@
 (defmacro break xs
   (if (null? xs)
       `(begin ,@(map (lambda (x) `(set! ,x (break:breakf ,x ',x)))
-- 
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