linux-kernel - Re: [PATCH] checkpatch: Make the output better readable

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Date:	Mon, 01 Jun 2015 11:22:07 -0700
From:	Joe Perches <joe@...ches.com>
To:	Jim Davis <jim.epost@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Petr Mladek <pmladek@...e.cz>,
	Andy Whitcroft <apw@...onical.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] checkpatch: Make the output better readable

(adding back cc's)

On Mon, 2015-06-01 at 11:14 -0700, Jim Davis wrote:
> On Mon, Jun 1, 2015 at 11:02 AM, Joe Perches <joe@...ches.com> wrote:
> > On Mon, 2015-06-01 at 16:25 +0200, Petr Mladek wrote:
> >> I always have troubles to parse checkpatch.pl output when I check
> >> the whole patchset. It is hard to say which messages belongs to
> >> what patch.
> >>
> >> This patch does few small changes to make the output look better
> >> for me:
> >
> > As git and other utilities now use color by default, what do
> > you think about adding color for various message types?
> >
> > And colorize only to the terminal, not any redirected output.
> >
> > Maybe something like:
> >
> > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > index c8032a0..12c43c6 100755
> > --- a/scripts/checkpatch.pl
> > +++ b/scripts/checkpatch.pl
> > @@ -9,6 +9,7 @@ use strict;
> >  use POSIX;
> >  use File::Basename;
> >  use Cwd 'abs_path';
> > +use Term::ANSIColor qw(:constants);
> >
> >  my $P = $0;
> >  my $D = dirname(abs_path($P));
> > @@ -1649,10 +1650,24 @@ sub report {
> >                 return 0;
> >         }
> >         my $line;
> > +       my $cprefix = $prefix;
> > +       my $clevel = $level;
> > +       my $ctype = $type;
> > +       if (-t STDOUT) {
> > +               $cprefix = GREEN . $prefix . RESET;
> > +               if ($level eq "ERROR") {
> > +                       $clevel = RED . $level . RESET;
> > +               } elsif ($level eq "WARNING") {
> > +                       $clevel = YELLOW . $level . RESET;
> > +               } else {
> > +                       $clevel = GREEN . $level . RESET;
> > +               }
> > +               $ctype = GREEN . $type . RESET;
> > +       }
> 
> Could colors be optional?  Not everyone can distinguish green from
> red, and some of us who can still prefer being colorless.  (So to
> speak.)

Just as with git, piping though cat|less would eliminate colors,
I suppose a --nocolor option could be added easily enough too.

btw: it's not a patch, just a possibility/proposal.


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