Re: distinguish .h files

[Oleksandr Gavenko]

On 21.10.2010 15:56, Andrea Crotti wrote:
> Oleksandr Gavenko<gavenko@bifit.com.ua>  writes:
>
> > > I don't know exactly,...
> > >
> > > --8<---------------cut here---------------start------------->8---
> > > (defun c++-header-file-p ()
> > >     "Return non-nil, if in a C++ header."
> > >     (and (string-match "\\.h$"
> > >                      (or (buffer-file-name)
> > >                          (buffer-name)))
> > >          (save-excursion
> > >          (re-search-forward "\\_<class\\_>" nil t))))
> > >
> > > (add-to-list 'magic-mode-alist
> > >              '(c++-header-file-p . c++-mode))
> > > --8<---------------cut here---------------end--------------->8---
> > I use your code to get this value (add this after 'string-match'):
> >
> >          (message "%s" (- (point-max) (point-min)))
> >
> > I get 4000.
>
> I don't get your point...
> What's that useful for exactly?
Suppose header firstly have a lot of '#define', so 'class' keyword
far from 'magic-mode-alist'. And .h file was opened in c-mode.

I look ALT/MFS headers (not all).
Usually 'class' matches near offset in 900 bytes.