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[Emacs-diffs] master 2bd3e48: * lisp/gnus/gnus-dup.el: Use lexical-bindi


From: Basil L. Contovounesios
Subject: [Emacs-diffs] master 2bd3e48: * lisp/gnus/gnus-dup.el: Use lexical-binding
Date: Tue, 2 Apr 2019 21:56:46 -0400 (EDT)

branch: master
commit 2bd3e484041b2b7ea47c236b86f59610d971b609
Author: Basil L. Contovounesios <address@hidden>
Commit: Basil L. Contovounesios <address@hidden>

    * lisp/gnus/gnus-dup.el: Use lexical-binding
    
    (gnus-dup-list-dirty): Add docstring.
    (gnus-dup-open): Allocate gnus-dup-hashtb more conservatively now
    that it is no longer an obarray.
    (gnus-dup-enter-articles): Fix off-by-one error.
    (gnus-dup-suppress-articles): DRY.
    
    For discussion, see thread starting at:
    https://lists.gnu.org/archive/html/emacs-devel/2019-03/msg00974.html
---
 lisp/gnus/gnus-dup.el | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/lisp/gnus/gnus-dup.el b/lisp/gnus/gnus-dup.el
index 8b87648..4902212 100644
--- a/lisp/gnus/gnus-dup.el
+++ b/lisp/gnus/gnus-dup.el
@@ -1,4 +1,4 @@
-;;; gnus-dup.el --- suppression of duplicate articles in Gnus
+;;; gnus-dup.el --- suppression of duplicate articles in Gnus  -*- 
lexical-binding: t -*-
 
 ;; Copyright (C) 1996-2019 Free Software Foundation, Inc.
 
@@ -57,10 +57,12 @@ seen in the same session."
 
 (defvar gnus-dup-list nil
   "List of seen message IDs, as strings.")
+
 (defvar gnus-dup-hashtb nil
   "Hash table of seen message IDs, for fast lookup.")
 
-(defvar gnus-dup-list-dirty nil)
+(defvar gnus-dup-list-dirty nil
+  "Non-nil if `gnus-dup-list' needs to be saved.")
 
 ;;;
 ;;; Starting and stopping
@@ -80,7 +82,7 @@ seen in the same session."
   (if gnus-save-duplicate-list
       (gnus-dup-read)
     (setq gnus-dup-list nil))
-  (setq gnus-dup-hashtb (gnus-make-hashtable gnus-duplicate-list-length))
+  (setq gnus-dup-hashtb (gnus-make-hashtable))
   ;; Enter all Message-IDs into the hash table.
   (dolist (g gnus-dup-list)
     (puthash g t gnus-dup-hashtb)))
@@ -121,11 +123,13 @@ seen in the same session."
                 (not (gethash msgid gnus-dup-hashtb)))
        (push msgid gnus-dup-list)
        (puthash msgid t gnus-dup-hashtb))))
-  ;; Chop off excess Message-IDs from the list.
-  (let ((end (nthcdr gnus-duplicate-list-length gnus-dup-list)))
+  ;; Remove excess Message-IDs from the list and hash table.
+  (let* ((dups (cons nil gnus-dup-list))
+         (end  (nthcdr gnus-duplicate-list-length dups)))
     (when end
       (mapc (lambda (id) (remhash id gnus-dup-hashtb)) (cdr end))
-      (setcdr end nil))))
+      (setcdr end nil))
+    (setq gnus-dup-list (cdr dups))))
 
 (defun gnus-dup-suppress-articles ()
   "Mark duplicate articles as read."
@@ -137,10 +141,9 @@ seen in the same session."
        number)
     (dolist (header gnus-newsgroup-headers)
       (when (and (gethash (mail-header-id header) gnus-dup-hashtb)
-                (gnus-summary-article-unread-p (mail-header-number header)))
-       (setq gnus-newsgroup-unreads
-             (delq (setq number (mail-header-number header))
-                   gnus-newsgroup-unreads))
+                 (setq number (mail-header-number header))
+                 (gnus-summary-article-unread-p number))
+        (setq gnus-newsgroup-unreads (delq number gnus-newsgroup-unreads))
        (if (not auto)
            (push (cons number gnus-duplicate-mark) gnus-newsgroup-reads)
          (push number gnus-newsgroup-expirable)



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