[PATCH] remove trailing whitespace

[PATCH] remove trailing whitespace

[Padraig Brady]

This (23MB! (5Mb compressed)) patch removes trailing whitespace from
all files in the kernel, thereby reducing size from 121,865,495 to
121,640,841. I.E. reducing size by 224,654 bytes. I don't know if it's
of any use, but it should be applied now if it is going to be done
at all.

http://www.iol.ie/~padraiga/linux-2.5.0-strip-ws.diff.gz

cheers,
Padraig.

Re: [PATCH] remove trailing whitespace

[vda]

On Friday 23 November 2001 15:20, Padraig Brady wrote:
> This (23MB! (5Mb compressed)) patch removes trailing whitespace from
> all files in the kernel, thereby reducing size from 121,865,495 to
> 121,640,841. I.E. reducing size by 224,654 bytes. I don't know if it's
> of any use, but it should be applied now if it is going to be done
> at all.
>
> http://www.iol.ie/~padraiga/linux-2.5.0-strip-ws.diff.gz

Isn't it easier to write a script 'clean_trailing_ws' (or whatever)
and add it to scripts/ ?
Linus can apply such 'cleaning' scripts at times like 2.4 -> 2.5
--
vda

Re: [PATCH] remove trailing whitespace

[Russell King]

On Sun, Nov 25, 2001 at 02:00:43PM -0200, vda wrote:
> Isn't it easier to write a script 'clean_trailing_ws' (or whatever)
> and add it to scripts/ ?
> Linus can apply such 'cleaning' scripts at times like 2.4 -> 2.5

It's best to have a script that you pass all patches through which
strips off trailing space on any line that gets added (you can't
do it blindly since the context lines must obviously match the
original, as must the lines being removed).

I do this automatically when people send stuff to my patch system.
Appears to work well.

It solves the problem of the trailing space getting into the source
in the first place, and doesn't produce a huge 25MB patch.

I suppose you could also remove anything which matched 1-7 spaces
and a tab character, but this might be less reliable.  Obviously
you can't replace 8 spaces with a tab character, since it might
be part of a printk string.

If anyone's interested, this is a fragment from the perl script which
processes incoming patches.  Might be useful to someone.

	#
	# And now the actual patch itself
	#
	while (<STDIN>)
	{
		chomp;
		s/\s+$// if m/^\+/;
		$mail .= "$_\n";
		$patchtext .= "$_\n";
	}

I'm sure someone can come up with something more efficient. 8)

--
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html

Re: [PATCH] remove trailing whitespace

[Padraig Brady]

I used sed, but yes the following does
the same as downloading and applying the patch:
find linux -type f | xargs perl -wi -pe 's/[<space><tab>]+$//'
(obviously replace <space> & <tab> with the appropriate chars).

Note also that after (bz2) compression the space saving drops
from 224,654 to 139,669 bytes, which is still good.

Padraig.

Mark Hahn wrote:

> 	find linux -type f | xargs perl -pe 's/\s+$/\n/'
> wouldn't something like this work?  seems generally easier,
> more compact, and probably more Linus-appetizing...
> 
> 
>>This (23MB! (5Mb compressed)) patch removes trailing whitespace from
>>all files in the kernel, thereby reducing size from 121,865,495 to
>>121,640,841. I.E. reducing size by 224,654 bytes. I don't know if it's
>>of any use, but it should be applied now if it is going to be done
>>at all.
>>
>>http://www.iol.ie/~padraiga/linux-2.5.0-strip-ws.diff.gz
>>
>>cheers,
>>Padraig.

Re: [PATCH] remove trailing whitespace

[David Weinehall]

On Fri, Nov 23, 2001 at 08:34:36PM +0000, Padraig Brady wrote:
> I used sed, but yes the following does
> the same as downloading and applying the patch:
> find linux -type f | xargs perl -wi -pe 's/[<space><tab>]+$//'
> (obviously replace <space> & <tab> with the appropriate chars).
> 
> Note also that after (bz2) compression the space saving drops
> from 224,654 to 139,669 bytes, which is still good.
> 
> Padraig.

Running Lindent on the kerneltree would be far more yielding, as
it would, apart from removing extraoneous whitespace, also format
all code in a sane manner. However, this is unlikely to ever happen; I
seem to recall that Linus has commented on this before.


Regards: David Weinehall
  _                                                                 _
 // David Weinehall <tao@acc.umu.se> /> Northern lights wander      \\
//  Maintainer of the v2.0 kernel   //  Dance across the winter sky //
\>  http://www.acc.umu.se/~tao/    </   Full colour fire           </