bug#10097: 24.0.91; Lisp mode should use common-lisp-indent-function by default

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Helmut Eller <eller.helmut@gmail.com> writes:
>
>> Lisp mode is supposedly a "Major mode for editing Lisp code for Lisps
>> other than GNU Emacs Lisp".  Yet the variable lisp-indent-function
>> remains set to the rather Elisp oriented #'lisp-indent-function.  As
>> Common Lisp is the most important non-Elisp Lisp
>> #'common-lisp-indent-function would be a friendlier default as it gets
>> at least if/flet/labels right more often:
>
> [...]
>
>> +  (make-local-variable 'lisp-indent-function)
>> +  (setq lisp-indent-function 'common-lisp-indent-function)
>
> (I'm going through old Emacs bug reports that unfortunately got no
> response at the time.)
>
> I think this makes sense -- Common Lisp is the biggest non-Elisp Lisp
> dialect, so using this as a default seems good.
>
> However, it's a behaviour change, and people who are used to wrongly
> indenting Common Lisp code may be annoyed by the change.
>
> Does anybody have an opinion on changing the default indentation in this
> mode?

I think we should change the default as suggested and announce in NEWS
why the change was made, and how to get back the old behaviour.

Best regards,
Stefan Kangas