Question 1

How to install aggressive-indent-mode in Emacs?

Accepted Answer

Install it from Melpa using M-x package-install RET aggressive-indent. Then, activate it by adding hooks like (add-hook 'emacs-lisp-mode-hook #'aggressive-indent-mode) to your Emacs configuration file.

Question 2

aggressive-indent-mode vs electric-indent-mode which one should I use?

Accepted Answer

Use electric-indent-mode if you only need indentation during typing; aggressive-indent-mode is better for comprehensive reindentation after all edits, but it may be more intrusive and slower on large files.

Question 3

Does aggressive-indent-mode work with JavaScript mode?

Accepted Answer

Yes, it can work with js-mode or similar by adding the appropriate hook, but ensure the mode's indentation is reliable, as aggressive-indent-mode relies on the underlying Emacs indentation engine.

Question 4

How to turn off aggressive-indent-mode for specific modes?

Accepted Answer

Add modes to the `aggressive-indent-excluded-modes` list, for example (add-to-list 'aggressive-indent-excluded-modes 'html-mode), to disable it selectively without affecting other modes.

Question 5

Why is aggressive-indent-mode making my Emacs slow?

Accepted Answer

The constant reindentation after every edit can be resource-intensive, especially in large buffers. Consider reducing its activation or customizing `aggressive-indent-dont-indent-if` to limit reindentation frequency.

Question 6

Can I use aggressive-indent-mode with evil-mode?

Accepted Answer

Yes, it's compatible as a minor mode, but test for conflicts with Vim-style editing commands, as automatic reindentation might interfere with operations like visual block moves or macros.

aggressive-indent (Emacs)

What is aggressive-indent (Emacs)?

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