[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: distinguish .h files
From: |
Tassilo Horn |
Subject: |
Re: distinguish .h files |
Date: |
Thu, 21 Oct 2010 17:21:01 +0200 |
User-agent: |
Gnus/5.110011 (No Gnus v0.11) Emacs/24.0.50 (gnu/linux) |
Andrea Crotti <andrea.crotti.0@gmail.com> writes:
Hi Andrea,
>> I guess, that restriction is made for performance reasons. This one
>> ignores the restriction and will even work if the first class is
>> declared after gigabytes of introductory text:
>>
>> (defun th-c++-header-file-p ()
>> "Return non-nil, if in a C++ header."
>> (and (string-match "\\.h$"
>> (or (buffer-file-name)
>> (buffer-name)))
>> (save-excursion
>> (save-restriction
>> (widen)
>> (re-search-forward "\\_<class\\_>" nil t)))))
>
> Yes well but the limit is not so wrong.
No, at least not for ancient computers.
> I mean I prefer to manually (eventually because if I only read I don't
> care so much) switch the mode instead of waiting 10 seconds for
> getting the file open.
I've just tried the worst case I can produce on my computer (core duo
with 2.1 GHz) by opening a 660kb C-header file. That's worst case
because it's the largest header I could find and because it is plain C
and not C++, so the function above will search the whole buffer. But
still I cannot perceive any hang or latency...
But the better way is to use the original function definition and
enlarge `magic-mode-regexp-match-limit' to some higher value like 50000
or so...
Bye,
Tassilo
- Re: distinguish .h files, (continued)
- Re: distinguish .h files, Oleksandr Gavenko, 2010/10/21
- Re: distinguish .h files, Tassilo Horn, 2010/10/21
- Re: distinguish .h files, Tassilo Horn, 2010/10/21
- Re: distinguish .h files, Andrea Crotti, 2010/10/21
- Re: distinguish .h files, Oleksandr Gavenko, 2010/10/21
- Re: distinguish .h files, Andrea Crotti, 2010/10/21
- Re: distinguish .h files, Oleksandr Gavenko, 2010/10/21
- Re: distinguish .h files, Andrea Crotti, 2010/10/21
- Re: distinguish .h files, Tassilo Horn, 2010/10/21
- Re: distinguish .h files, Andrea Crotti, 2010/10/21
- Re: distinguish .h files,
Tassilo Horn <=
- Re: distinguish .h files, Oleksandr Gavenko, 2010/10/21