Andreas Röhler <andreas.roehler@easy-emacs.de> writes:
When in init-file
(add-hook 'org-mode-hook (lambda () (electric-indent-mode -1)))
(setq org-adapt-indentation t)
C-j would indent.
However, IMO doesn't make sense to require these extra config in order
to get a reasonable behavior.
And everything hinges on what one finds "reasonable".
As discussed in bug#51167, in the wake of electric-indent-mode being
honored in Org 9.4, plenty of people have come to emacs-orgmode to
express that they did not expect RET to indent. Thus Org maintainers
chose to change the default value of org-adapt-indentation for Org 9.5.
Note that by default (electric-indent-mode t, org-adapt-indentation nil)
RET *does* indent in some specific scenarios, e.g. "- list item RET"
will indent (resp. with electric-indent-mode nil, "- list item C-j"),
because Org assumes that you want to add a paragraph to your list item.
To recap:
- electric-indent-mode is enabled by default in Org, as it is globally
in Emacs: hence RET indents, C-j does not.
- org-adapt-indentation tells Org whether you want your documents to be
hard-indented or not: starting with 9.5, they won't be by default.