From 72bc1fd120f0705e372dd7ac540db056002ec7b6 Mon Sep 17 00:00:00 2001
From: Chris Hanson <org/chris-hanson/cph>
Date: Thu, 19 Dec 1996 04:50:07 +0000
Subject: [PATCH] Implement new variable news-group-keep-ignored-headers. 
 Change purging code to use new interface.

---
 v7/src/edwin/edwin.pkg |  3 ++-
 v7/src/edwin/snr.scm   | 25 ++++++++++++++++---------
 2 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/v7/src/edwin/edwin.pkg b/v7/src/edwin/edwin.pkg
index c7d6a03ca..e1239da0a 100644
--- a/v7/src/edwin/edwin.pkg
+++ b/v7/src/edwin/edwin.pkg
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: edwin.pkg,v 1.202 1996/12/10 22:49:58 cph Exp $
+$Id: edwin.pkg,v 1.203 1996/12/19 04:50:07 cph Exp $
 
 Copyright (c) 1989-96 Massachusetts Institute of Technology
 
@@ -1704,6 +1704,7 @@ MIT in each case. |#
 	  edwin-variable$news-group-author-column
 	  edwin-variable$news-group-ignore-hidden-subjects
 	  edwin-variable$news-group-ignored-subject-retention
+	  edwin-variable$news-group-keep-ignored-headers
 	  edwin-variable$news-group-keep-seen-headers
 	  edwin-variable$news-group-mode-hook
 	  edwin-variable$news-group-show-author-name
diff --git a/v7/src/edwin/snr.scm b/v7/src/edwin/snr.scm
index 8ef0c6a19..1afed99ae 100644
--- a/v7/src/edwin/snr.scm
+++ b/v7/src/edwin/snr.scm
@@ -1,6 +1,6 @@
 ;;; -*-Scheme-*-
 ;;;
-;;;	$Id: snr.scm,v 1.22 1996/12/07 07:32:57 cph Exp $
+;;;	$Id: snr.scm,v 1.23 1996/12/19 04:50:00 cph Exp $
 ;;;
 ;;;	Copyright (c) 1995-96 Massachusetts Institute of Technology
 ;;;
@@ -223,6 +223,13 @@ Otherwise, only unseen headers are kept."
   #t
   boolean?)
 
+(define-variable news-group-keep-ignored-headers
+  "Switch controlling which headers are kept in the off-line database.
+If true, all headers are kept.
+Otherwise (the default), ignored headers aren't kept."
+  #f
+  boolean?)
+
 (define-variable news-group-show-seen-headers
   "Switch controlling whether already-seen headers are shown.
 If true, group buffers show all headers.
@@ -3748,14 +3755,14 @@ With prefix arg, replaces the file with the list information."
     (news-group:purge-header-cache group 'ALL)
     (news-group:purge-pre-read-headers group
       (if (ref-variable news-group-keep-seen-headers buffer)
-	  (lambda (number body?)
-	    body?
-	    (or (< number (news-group:first-article group))
-		(> number (news-group:last-article group))))
-	  (let ((ranges (news-group:guarantee-ranges-seen group)))
-	    (lambda (number body?)
-	      body?
-	      (member-of-ranges? ranges number)))))
+	  (lambda (header)
+	    (let ((number (news-header:number header)))
+	      (or (< number (news-group:first-article group))
+		  (> number (news-group:last-article group))
+		  (and (not (ref-variable news-group-keep-ignored-headers
+					  buffer))
+		       (news-header:ignore? header)))))
+	  news-header:article-seen?))
     (message msg "done")))
 
 (define (news-group:number-of-articles group)
-- 
2.25.1