bug#681: Wrong C++ indentation in batch mode

[ＯＦＦＩＣＥ ZERO <hi-oh230@air.ocn.ne.jp>]

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----- Original Message ----- 
From: "Vivien Mallet" <Vivien.Mallet@inria.fr>
To: <bug-gnu-emacs@gnu.org>
Sent: Sunday, August 10, 2008 12:26 AM
Subject: bug#681: Wrong C++ indentation in batch mode


> Hello,
>
> The indentation in C++ mode does not seem to work properly in batch mode 
> with
> the following code (indented in interactive mode):
> """
> template <class A, class B>
> Derived<A, B>::Derived():
>  Base<A,
>       B>() // Problem: wrong indentation in batch mode.
> {
> }
> """
>
> Now, define the Lisp function:
> (defun cpp_indent ()
>  (c-set-style "gnu")
>  (c++-mode)
>  (indent-region (point-min) (point-max) ())
>  (save-buffer)
>  )
> And apply it the previous function. It will result in:
> """
> template <class A, class B>
> Derived<A, B>::Derived():
>  Base<A,
>  B>() // Problem: wrong indentation in batch mode.
> {
> }
> """
> which is inconsistent with the interactive and is not, I presume, the
> targeted result.
> I found the problem in Emacs 23.0.60.1 (emacs snapshot in Kubuntu 8.04) 
> and
> in Emacs 22.1.3. It does not appear in Emacs 21.4.1 (Debian Etch).
>
>
> Just an unrelated note about the indentation. I found a difference between 
> the
> two latest versions I mentioned and the version 21.4.1. This code 
> (indented
> with Emacs 22+):
> """
> template <class A, class B>
> Derived0<A, B>::Derived0():
>  Base<A, B>
>  ()
> {
> }
> """
> is indented by Emacs 21.4.1 as
> """
> template <class A, class B>
> Derived0<A, B>::Derived0():
>  Base<A, B>
> ()
> {
> }
> """
> I like the new indentation better, and I suppose it was an improvement
> introduced in the latest versions. I mention it, just in case...
>
>
> I attach three files:
> - test.cxx: a file to be indented (but already well indented);
> - test-wrong_indentation.cxx: test.cxx after indentation in batch mode 
> with
> Emacs 22+;
> - cpp_indent.lisp: the indentation function. Used in: "emacs -batch 
> test.cxx -
> l cpp_indent.lisp -f cpp_indent".
>
>
> Thank you for your great work,
> Vivien Mallet.
>