GNU bug report logs - #9484
scheme-indent-function bug?

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: 彥瑾 <coldnew.tw <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: scheme-indent-function bug?
Date: Mon, 12 Sep 2011 22:59:42 +0800

[Message part 1 (text/plain, inline)]

Dear:
             I want to make  c-declare function likes following

             (c-declare #<<c-declare-end

              #include <stdio.h>
              c-declare-end
              )

              but if  I use  (put 'c-decare 'scheme-indent-function 0)
whitch is according to scheme wiki

              the scheme code will looks like:

             (c-declare #<<c-declare-end

                               #include <stdio.h>
                               c-declare-end
                                )

               and this will make my scheme compiler error ( I try both
gambit-c and racket)

               if I write a simple emacs lisp

              (defun scheme-indent-dummy (state indent-point normal-indent)
                0)
              (put 'c-declare 'scheme-indent-function 'scheme-indent-dummy)

              and the scheme's c-declare function will indent as I want

               maybe this is a scheme-mode's bug ?

[Message part 2 (text/html, inline)]

Message #8 received at 9484 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: coldnew.tw <at> gmail.com
Cc: 9484 <at> debbugs.gnu.org
Subject: Re: bug#9484: scheme-indent-function bug?
Date: Tue, 13 Sep 2011 00:02:42 -0400

> I want to make c-declare function likes following
>
>              (c-declare #<<c-declare-end
>
>               #include <stdio.h>
>               c-declare-end
>               )
>
> but if I use (put 'c-decare 'scheme-indent-function 0) whitch is
> according to scheme wiki
>
> the scheme code will looks like:
>
>              (c-declare #<<c-declare-end
>
>                                #include <stdio.h>
>                                c-declare-end
>                                 )

If the scheme wiki says that

(put 'c-declare 'scheme-indent-function 0)

will give everything 0 indentation, then I believe it is incorrect.
It's a shame scheme-indent-function doesn't have a doc-string, but it
works like the function lisp-indent-function, which does. Quoting that:

* an integer N, meaning indent the first N arguments specially
  like ordinary function arguments and then indent any further
  arguments like a body;

A value of 0 means to indent like `progn' (for example), not "to column 0".

> (defun scheme-indent-dummy (state indent-point normal-indent) 0)
> (put 'c-declare 'scheme-indent-function 'scheme-indent-dummy)
>
> and the scheme's c-declare function will indent as I want

I don't think there is a standard way to say "indent to column N", so
writing a function like that seems the correct way to do it.


I think scheme-indent-function should get a doc-string, but other than
that I do not think there is a bug.

Message #13 received at 9484-done <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: 9484-done <at> debbugs.gnu.org
Subject: Re: bug#9484: scheme-indent-function bug?
Date: Tue, 13 Sep 2011 03:01:05 -0400

I have given scheme-indent-function a doc-string and am closing this.

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