[Python-Dev] Reindenting the C code base?

Brett Cannon brett at python.org
Mon Dec 15 20:21:27 CET 2008

On Mon, Dec 15, 2008 at 00:20, Georg Brandl <g.brandl at gmx.net> wrote:
> Jeffrey Yasskin schrieb:
>> On Sun, Dec 14, 2008 at 8:26 AM, Guido van Rossum <guido at python.org> wrote:
>>> On Sat, Dec 13, 2008 at 2:11 PM, Antoine Pitrou <solipsis at pitrou.net> wrote:
>>>> Guido van Rossum <guido <at> python.org> writes:
>>>>> I think we should not do this. We should use 4 space indents for new
>>>>> files, but existing files should not be reindented.
>>>> Well, right now many files are indented with a mix of spaces and tabs, depending
>>>> on who did the edit and how their editor was configured at the time.
>>> That's  a shame. We used to have more rigorous standards than allowing that.
>>>> Perhaps a graceful policy would be to mandate that all new edits be made with
>>>> spaces without touching other functions in the file. Then hopefully the code
>>>> base would gradually converge to a tabless scheme.
>>> I don't think so. I find local consistency more important than global
>>> consistency. A file can become really hard to read when different
>>> indentation schemes are used in random parts of the code.
>>> If you have a problem configuring your editor, just say so and someone
>>> will explain how to do it.
>> I've never figured out how to configure emacs to deduce whether the
>> current file uses spaces or tabs and has a 4 or 8 space indent. I
>> always try to get it right anyway, but it'd be a lot more convenient
>> if my editor did it for me. If there are such instructions, perhaps
>> they should be added to PEPs 7 and 8?
> I use this little hack to detect indentation in Python's C files:
> (defun c-select-style ()
>  "Hack: Select the C style to use from buffer indentation."
>  (save-excursion
>    (if (re-search-forward "^\t" 3000 t)
>        (c-set-style "python")
>      (c-set-style "python-new"))))
> (add-hook 'c-mode-hook 'c-select-style)
> -- where "python" and "python-new" are two appropriate c-mode styles.

Anyone have something similar for Vim?


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