GNU bug report logs - #40919
27.0.91; next-error-select-buffer does not always behave as documented

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From: Juri Linkov <juri <at> linkov.net>
To: Trevor Spiteri <tspiteri <at> ieee.org>
Cc: 40919 <at> debbugs.gnu.org
Subject: bug#40919: 27.0.91; next-error-select-buffer does not always behave as documented
Date: Wed, 29 Apr 2020 23:38:59 +0300

> I think the error is in the implementation.

Then I see no way other than for next-error-select-buffer to say:
"the current buffer was visited from next-error-last-buffer".
Yes, this is a lie, but a white lie with good intentions, so
next-error-find-buffer will trust this misinformation and leave
the buffer alone.  Is this patch morally acceptable?

diff --git a/lisp/simple.el b/lisp/simple.el
index b5ba05426f..b5f148b7d5 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -379,7 +379,8 @@ next-error-select-buffer
    (list (get-buffer
           (read-buffer "Select next-error buffer: " nil nil
                        (lambda (b) (next-error-buffer-p (cdr b)))))))
-  (setq next-error-last-buffer buffer))
+  (setq next-error-last-buffer buffer)
+  (setq next-error-buffer buffer))
 
 (defalias 'goto-next-locus 'next-error)
 (defalias 'next-match 'next-error)

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