I just uploaded a short video about Emacs 30 Built-in Completion UI & Styles, which you have find here.
Video notes:
When referring to “Emacs Completions”, I refer to Completion Styles & UI I’ve often relied on third-party packages to emulate features from other text editors. For instance, I’ve long used vertico, corfu and orderless. While I still recommend these packages, I became curious about using Emacs without depending on third-party options. My current setup tries to emulate my workflow with the packages mentioned above. The catalyst that pushed me to try the built-in completion is the addition of completion-preview-mode in Emacs 30. Mini-buffer completions Emacs does not enable “vertical” completions for the mini-buffer by default, but you can enable fido-vertical-mode which comes built-in with Emacs. fido-mode is an enhanced icomplete-mode that emulates ido-mode, also referred to as fake ido-mode. Completion Styles Changing completion-styles example: (setf completion-styles '(basic flex)) There is a plethora of completion styles, builtin styles include flex, which provides “fuzzy” completions. Completion UI & Code completions Emacs built-in completions have a distinctive approach. Instead of displaying a popup at point, a new Completions buffer appears when invoking completion-at-point. Example configuration:
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