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Notice in the screenshot below, the *Paradox Report* buffer is not displayed in the menu-bar, even though it's clearly a buffer in the buffer-list.

Diverging menus

An easy way to test this is to run M-: (get-buffer-create "*hello*"), and then look for this buffer on the menu-bar.

I'm guessing the menu-bar tries to be smart and ignore some buffers the user probably doesn't care about. My question is what criteria does it use? and how can I get around it?

That is, when I create the *Paradox Report* buffer, I want to ensure it will get displayed on the menu-bar.

  • After I manually visit the buffer once it does get displayed on the menu-bar.
  • The buffer name does not start with a space (is is "*Paradox Report*").
  • It seems this only happens on (development code for what might become) Emacs 25.
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    It sounds like a refresh / update issue with menu-bar-update-buffers -- perhaps its worth a bug report so they know it doesn't refresh as often as it should.
    – lawlist
    Mar 15 '15 at 15:51
  • Emacs 25 does not yet exist. Presumably you mean a development snapshot toward what might become Emacs 25.
    – Drew
    Aug 12 '15 at 14:30
  • @Drew Yes, thanks for clarifying. I figured it was safe to refer to it as Emacs 25 because that's what you get when you build the snapshot and call emacs-version (and because there has been previous discussion on the fact that the next version will be numbered 25). But indeed, I meant the snapshot.
    – Malabarba
    Aug 12 '15 at 14:41
  • emacs-version numbering for development snapshots is what it is. It is the source of quite a bit of confusion, unfortunately. We should help users by clarifying, whenever possible, that a "version" such as 25.0.50.1 is not Emacs 25. I have removed tag emacs-25 from posts that use it inappropriately. For now, it should apply only to discussions of what might be in the release etc., when it is released.
    – Drew
    Aug 12 '15 at 14:47
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Ok, it was a bug. Fixed now in the Emacs development code for what might become Emacs 25.

The problem was that, by default, Emacs only displays the first 10 buffers on the menu-bar. But that was done slightly wrong, so it caused much less than 10 buffers to be displayed.

In the screenshot, only 4 are displayed. On a clean emacs -Q, I could get at most 6 buffers to display on the menu-bar.

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