From 135430f7fc91117adb9c694f42f97062e894d15e Mon Sep 17 00:00:00 2001
From: Chris Hanson <org/chris-hanson/cph>
Date: Wed, 28 Feb 2001 14:56:28 +0000
Subject: [PATCH] Don't require existence of private Info directory.

---
 v7/src/edwin/info.scm  | 21 ++++++++++---------
 v7/src/edwin/paths.scm | 46 +++++++++++++++++-------------------------
 2 files changed, 30 insertions(+), 37 deletions(-)

diff --git a/v7/src/edwin/info.scm b/v7/src/edwin/info.scm
index a0b97ce78..5dac72620 100644
--- a/v7/src/edwin/info.scm
+++ b/v7/src/edwin/info.scm
@@ -1,8 +1,8 @@
 ;;; -*-Scheme-*-
 ;;;
-;;; $Id: info.scm,v 1.135 2000/08/07 02:36:23 cph Exp $
+;;; $Id: info.scm,v 1.136 2001/02/28 14:56:28 cph Exp $
 ;;;
-;;; Copyright (c) 1986, 1989-2000 Massachusetts Institute of Technology
+;;; Copyright (c) 1986, 1989-2001 Massachusetts Institute of Technology
 ;;;
 ;;; This program is free software; you can redistribute it and/or
 ;;; modify it under the terms of the GNU General Public License as
@@ -873,15 +873,16 @@ The name may be an abbreviation of the reference name."
 				    => os/parse-path-string)
 				   (else
 				    (ref-variable info-default-directory-list
-						  buffer))))
-			    (info-dir (edwin-info-directory)))
+						  buffer)))))
 			(map ->namestring
-			     (if (and (file-directory? info-dir)
-				      (not (there-exists? directories
-					     (lambda (dir)
-					       (pathname=? info-dir dir)))))
-				 (append directories (list info-dir))
-				 directories)))))
+			     (let ((info-dir (edwin-info-directory)))
+			       (if (and info-dir
+					(file-directory? info-dir)
+					(not (there-exists? directories
+					       (lambda (dir)
+						 (pathname=? info-dir dir)))))
+				   (append directories (list info-dir))
+				   directories))))))
 		 (set-variable-local-value! buffer variable directories)
 		 directories)
 	       directories)))))
diff --git a/v7/src/edwin/paths.scm b/v7/src/edwin/paths.scm
index 70590e7ee..5b2b873c3 100644
--- a/v7/src/edwin/paths.scm
+++ b/v7/src/edwin/paths.scm
@@ -1,8 +1,8 @@
 #| -*-Scheme-*-
 
-$Id: paths.scm,v 1.14 1999/01/02 06:11:34 cph Exp $
+$Id: paths.scm,v 1.15 2001/02/28 14:56:13 cph Exp $
 
-Copyright (c) 1989-1999 Massachusetts Institute of Technology
+Copyright (c) 1989-2001 Massachusetts Institute of Technology
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -23,37 +23,29 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 (declare (usual-integrations))
 
-(define edwin-library-directory-pathname
-  (let ((directory (pathname-as-directory "edwin")))
-    (lambda (envvar name)
-      (cond ((get-environment-variable envvar)
-	     => (lambda (name)
-		  (pathname-as-directory (merge-pathnames name))))
-	    ((system-library-directory-pathname
-	      (merge-pathnames name directory)))
-	    (else
-	     (error "Can't find edwin library directory:" name))))))
-
-(define (edwin-etc-pathname filename)
-  (let ((pathname (merge-pathnames filename (edwin-etc-directory))))
-    (if (not (file-exists? pathname))
-	(error "Unable to find file:" (->namestring pathname)))
-    pathname))
+(define (edwin-library-directory-pathname envvar name required?)
+  (let ((name (get-environment-variable envvar)))
+    (if name
+	(pathname-as-directory (merge-pathnames name))
+	(or (system-library-directory-pathname
+	     (merge-pathnames name (pathname-as-directory "edwin")))
+	    (and required?
+		 (error "Can't find edwin library directory:" name))))))
 
 (define (edwin-binary-directory)
-  (edwin-library-directory-pathname
-   "EDWIN_BINARY_DIRECTORY"
-   "autoload"))
+  (edwin-library-directory-pathname "EDWIN_BINARY_DIRECTORY" "autoload" #t))
 
 (define (edwin-info-directory)
-  (edwin-library-directory-pathname
-   "EDWIN_INFO_DIRECTORY"
-   "info"))
+  (edwin-library-directory-pathname "EDWIN_INFO_DIRECTORY" "info" #f))
 
 (define (edwin-etc-directory)
-  (edwin-library-directory-pathname
-   "EDWIN_ETC_DIRECTORY"
-   "etc"))
+  (edwin-library-directory-pathname "EDWIN_ETC_DIRECTORY" "etc" #t))
+
+(define (edwin-etc-pathname filename)
+  (let ((pathname (merge-pathnames filename (edwin-etc-directory))))
+    (if (not (file-exists? pathname))
+	(error "Unable to find file:" (->namestring pathname)))
+    pathname))
 
 (define (edwin-tutorial-pathname)
   (edwin-etc-pathname "TUTORIAL"))
-- 
2.25.1