bug#48834: 28.0.50; [PATCH] gnus-summary-limit functions with prefix fail when no articles are left to display

[Alex Bochannek]

Hello!

I noticed that when I am trying to exclude articles from summary view, I
incorrectly get the "Found no matches" error when all articles match
(i.e., no articles are left to display.)

diff --git a/lisp/gnus/gnus-sum.el b/lisp/gnus/gnus-sum.el
index 48794ceb3f..3279c3221e 100644
--- a/lisp/gnus/gnus-sum.el
+++ b/lisp/gnus/gnus-sum.el
@@ -8247,7 +8247,7 @@ gnus-summary-limit-to-subject
        (let ((articles (gnus-summary-find-matching
                         (or header "subject") subject 'all nil nil
                         not-matching)))
-         (unless articles
+         (unless (or articles not-matching)
            (error "Found no matches for \"%s\"" subject))
          (gnus-summary-limit articles))
       (gnus-summary-position-point))))
@@ -8318,7 +8318,7 @@ gnus-summary-limit-to-recipient
                                 (and (memq a to) a))
                               cc)
                     (nconc to cc))))
-            (unless articles
+            (unless (or articles not-matching)
               (error "Found no matches for \"%s\"" recipient))
             (gnus-summary-limit articles))
       (gnus-summary-position-point))))
@@ -8374,7 +8374,7 @@ gnus-summary-limit-to-address
                     (nconc (if (eq to t) nil to)
                            (if (eq cc t) nil cc)
                            from))))
-            (unless articles
+            (unless (or articles not-matching)
               (error "Found no matches for \"%s\"" address))
             (gnus-summary-limit articles))
       (gnus-summary-position-point))))
@@ -8465,7 +8465,7 @@ gnus-summary-limit-to-extra
        (let ((articles (gnus-summary-find-matching
                         (cons 'extra header) regexp 'all nil nil
                         not-matching)))
-         (unless articles
+         (unless (or articles not-matching)
            (error "Found no matches for \"%s\"" regexp))
          (gnus-summary-limit articles))
       (gnus-summary-position-point))))

-- 
Alex.