[patch-utility] remove whitespaces from kernel sources (for any kernel version)

[patch-utility] remove whitespaces from kernel sources (for any kernel version)

[Alexander Stohr]

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Hello,

the attached shell skript recursively removes
any trailing spaces and tabs from c and h files.

for current 2.6.x kernel a resulting diff had a size
of about 24 MB unpacked. i suppose that other kernel
trees will compare to this magnitude.

this means the linux kernel source has an interesting potential
for optimisation which will result in smaller tarballs,
faster compilation in misc stages of code preprocessing
and last but not least lesser fuzz in diffs for people
that do use editors which will strip such charcters by themselves.

please note that i did not use the [[:space:]] qualifier in the script
since that would strip the intentional <Form-Feed> chars as well.

i would enjoy if you could apply those patch to your kernel source.

-Alex.

PS: please CC me on replys since i am not subscribed to this list

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#!/bin/bash
# file recursive removal of whitespaces (but not form-feed) at the end of a line
for f in `find . -name *[.][ch]`
do
  echo $f
  mv $f $f.tmp
  sed -e "s/[\t ]*$//g" $f.tmp >$f
  rm $f.tmp
done

Re: [patch-utility] remove whitespaces from kernel sources (for any kernel version)

[Paul Wagland]

On Tue 31 Aug 2004 02:11:11 PM CEST, Alexander Stohr wrote:

> Hello,
>
> for current 2.6.x kernel a resulting diff had a size
> of about 24 MB unpacked. i suppose that other kernel
> trees will compare to this magnitude.

Don't forget though, that the actual file difference will be about 200K over a
34M tree... not trivial, but nowhere near that size of that diff file ;-)

> this means the linux kernel source has an interesting potential
> for optimisation which will result in smaller tarballs,

About 180 KB smaller...

> faster compilation in misc stages of code preprocessing

neglible change in speed...

> and last but not least lesser fuzz in diffs for people
> that do use editors which will strip such charcters by themselves.

This would be useful :-)

Cheers,
Paul