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#emacs#emacs31#completion-preview-mode

Emacs: completion-preview-mode and the Completions buffer (Emacs 31)

Protesilaos

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  • Recommended by 1 person: 1 in engineering communities.
  • Presented by Protesilaos Stavrou

Intermediate. Assumes working knowledge.

10K views2 months ago1 recommendation

Tools and practiceVim, Emacs and editors

Protesilaos Stavrou demonstrates how to combine the built-in completion-preview-mode with the default Completions buffer in Emacs 31.

The built-in 'completion-preview-mode' lets us expand what we type in a minimalist, distraction-free way. It can also be combined with the default Completions buffer to show all the available options. The Completions buffer has several nice features, starting with Emacs 31, which make this an excellent combination that does not require any third party packages (though packages can still augment the overall experience). I also mention the Emacs 31 'newcomers-presets' theme, which configures some of these options as well: it is a great way to start your Emacs configuration. The code I demonstrated here is available on my website: protesilaos.com/codelog/2026-08-29-emacs-completion-preview-…

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1 person recommends this

What people say. Recommended for learning how to configure Emacs 31's built-in completion features without third-party packages.

u/Informal_Sound_3039in r/emacs • Recommends

Prot Vod Emacs: completion-preview-mode and the Completions buffer (Emacs 31) The built-in 'completion-preview-mode' lets us expand what we type in a minimalist, distraction-free way. It can also be combined with the default Completions buffer to show all the available options. The Completions buffer has several nice features, starting with Emacs 31, which make this an excellent combination that does not require any third party packages (though packages can still augment the overall experience). I also mention the Emacs 31 'newcomers-presets' theme, which configures some of these options as well: it is a great way to start your Emacs configuration. The code I demonstrated here is availa…
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