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bug#24962: 26.0.50; list-buffers doesn't show buffers w/ name " "... vis


From: Tino Calancha
Subject: bug#24962: 26.0.50; list-buffers doesn't show buffers w/ name " "... visiting a file
Date: Fri, 18 Nov 2016 20:15:52 +0900 (JST)
User-agent: Alpine 2.20 (DEB 67 2015-01-07)


emacs -Q -eval '(write-region "foo" nil (expand-file-name temporary-file-directory 
"foo"))'
 M-: (find-file (expand-file-name temporary-file-directory "foo")) RET
 M-: (rename-buffer " foo") RET
 C-x C-b
 ;; Buffer " foo" not listed.

From the Emacs manual:
doc/lispref/buffers.texi (Buffer Names):
Buffers that are ephemeral and generally uninteresting to the user
have names starting with a space, so that the @code{list-buffers} and
@code{buffer-menu} commands don't mention them (but if such a buffer
visits a file, it @strong{is} mentioned).

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
From 5f86fb83f6dcb65a3cbb03b3a09306f0375deb5a Mon Sep 17 00:00:00 2001
From: Tino Calancha <tino.calancha@gmail.com>
Date: Fri, 18 Nov 2016 20:07:15 +0900
Subject: [PATCH] List buffers with name starting with " " if they visit a file

* lisp/buff-menu.el (list-buffers--refresh)
---
 lisp/buff-menu.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/buff-menu.el b/lisp/buff-menu.el
index 4742628..2949409 100644
--- a/lisp/buff-menu.el
+++ b/lisp/buff-menu.el
@@ -633,7 +633,8 @@ list-buffers--refresh
               (file buffer-file-name))
          (when (and (buffer-live-p buffer)
                     (or buffer-list
-                        (and (not (string= (substring name 0 1) " "))
+                        (and (or (not (string= (substring name 0 1) " "))
+                                  file)
                              (not (eq buffer buffer-menu-buffer))
                              (or file show-non-file))))
            (push (list buffer
--
2.10.2

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
In GNU Emacs 26.0.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.3)
 of 2016-11-16
Repository revision: 6653bb45d3697c9372cc77773c49f52399740b51





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