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bug#44384: 27.1; Bug in finder-commentary buffer

From: Stephen Berman
Subject: bug#44384: 27.1; Bug in finder-commentary buffer
Date: Mon, 02 Nov 2020 10:41:04 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

On Mon, 02 Nov 2020 04:13:35 +0000 Robert Thorpe 
<rt@robertthorpeconsulting.com> wrote:

> The quit feature in the finder-commentary buffer doesn't work.  I use
> finder-commentary on a library, e.g. M-x finder-commentary appt.  Then I
> switch to the buffer it creates.  Now, 'C-h m' tells me that I can press
> "q" to quit it and all other finder buffers.  This doesn't work.  It
> seems to be because the code is expecting the buffer name to be
> different.

This happens in both emacs-27 and master, but not in 26.3.  The
difference is due to this change:

  commit 070dd439096c0f72d8f73823649e3c650f31c890
  Author:     Stefan Kangas <stefankangas@gmail.com>
  AuthorDate: Fri Jul 12 00:43:12 2019 +0200
  Commit:     Eli Zaretskii <eliz@gnu.org>
  CommitDate: Sat Jul 20 12:23:07 2019 +0300

      Make finder-exit use quit-window (Bug#33610)

      * lisp/finder.el (finder-exit): Quit window instead of
      deleting.  This restores previous contents of the window,
      if any, that was usurped by "C-h p" to show the list of

Before this change (i.e. in 26.3), if the frame is split into two (or
more) windows, `q' does delete the Finder window (but doesn't kill the
buffer).  But even there, if the Finder buffer is occupying the sole
window of the frame, then `q' does nothing.  This seems to be due to
this change:

  commit 96ae4c8fa704b0385d6f2cf10b69bf289e2fb7ef
  Author:     Chong Yidong <cyd@stupidchicken.com>
  AuthorDate: Sun Aug 29 18:15:09 2010 -0400
  Commit:     Chong Yidong <cyd@stupidchicken.com>
  CommitDate: Sun Aug 29 18:15:09 2010 -0400

      Merge Finder and package-menu functionality.

      * lisp/finder.el: Require `package'.
      (finder-exit): We don't use "*Finder-package*" and "*Finder
      Category*" buffers anymore.

Despite this commit message, finder.el still contains this code:

  (defun finder-commentary (file)
    "Display FILE's commentary section.
  FILE should be in a form suitable for passing to `locate-library'."
      (pop-to-buffer "*Finder-package*")

Steve Berman

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