bug#63141: Incorrect indentation in csharp-mode

[Eli Zaretskii <eliz@gnu.org>]

> From: Jen-Chieh Shen <jcs090218@gmail.com>
> Date: Fri, 28 Apr 2023 22:54:15 -0700
> Cc: theo@thornhill.no, 63141@debbugs.gnu.org, jostein@kjonigsen.net
> 
> > Isn't this user preference that is customizable via c-offset-alist?
> 
> Yes, it is.

Then this is not a bug.

> csharp-mode has the following:
> 
> ```elisp
> (c-add-style "csharp"
>              '("java"
>                (c-basic-offset . 4)
>                (c-comment-only-line-offset . (0 . 0))
>                (c-offsets-alist . ((inline-open           . 0)
>                                    (arglist-intro         . +)
>                                    (arglist-close         . 0)
>                                    (inexpr-class          . 0)
>                                    (case-label            . +)
>                                    (cpp-macro             . c-lineup-dont-change)
>                                    (substatement-open     . 0)))))
> ```
> 
> I consider it an awkward indentation, so better to change the default (change to the expected
> behavior).

I'll let Theo and Jostein chime in regarding the accepted practices in
C#, but in general it is not enough to hear from one or several users
that they don't like the defaults in order for us to change the
default behavior.  These customization options exist precisely so that
people who don't like the defaults could easily adjust Emacs to their
liking.  Why would you impose your personal preferences on everyone
else, instead of letting them customize this as they see fit?