linux-kernel - Re: spdx spring cleaning

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Message-ID: <YDjwhAIMvCWAPSUY@kroah.com>
Date:   Fri, 26 Feb 2021 13:58:44 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: spdx spring cleaning

On Fri, Feb 26, 2021 at 01:32:04PM +0100, Rasmus Villemoes wrote:
> Hi,
> 
> I was doing some 'git grep SPDX-License-Identifier' statistics, but
> noticed that I had to do a lot more normalization than expected (clearly
> handling different comment markers is needed).
> 
> How about running something like the below after -rc1? The end result is
> 
>  2558 files changed, 2558 insertions(+), 2558 deletions(-)
> 
> mostly from the last fixup, before that it's merely
> 
>  90 files changed, 90 insertions(+), 90 deletions(-)
> 
> Rasmus
> 
> #!/bin/sh
> 
> fixup() {
>     gp="$1"
>     cmd="$2"
> 
>     git grep --files-with-matches "SPDX-License-Identifier:$gp" | grep
> -v COPYING | \
>         xargs -r -P8 sed -E -s -i -e "1,3 { /SPDX-License-Identifier/ {
> $cmd } }"
>     git diff --stat | tail -n1
> }
> 
> # tab->space, the first string is "dot asterisk tab"
> fixup '.*	' 's/\t/ /g'
> 
> # trailing space
> fixup '.* $' 's/ *$//'
> 
> # collapse multiple spaces
> fixup '.*  ' 's/  */ /g'
> 
> # or -> OR
> fixup '.* or ' 's/ or / OR /g'
> 
> # Remove outer parenthesis - when that pair is the only set of
> # parenthesis. Only none or */ trailing comment marker is handled.
> fixup ' (' 's|Identifier: \(([^()]*)\)( \*/)?$|Identifier: \1\2|'

What exactly are you trying to "clean up" here?  What tool are you using
that can not properly parse the tags that we currently have?

confused,

greg k-h