Re: [PATCH v2 14/14] git-cvsexportcommit: port to SHA-256

From: "brian m. carlson" <sandals@crustytoothpaste.net>
To: Eric Wong <e@80x24.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>,
	git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH v2 14/14] git-cvsexportcommit: port to SHA-256
Date: Tue, 4 Aug 2020 00:44:23 +0000	[thread overview]
Message-ID: <20200804004423.GO6540@camp.crustytoothpaste.net> (raw)
In-Reply-To: <20200804001315.GA4899@dcvr>

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On 2020-08-04 at 00:13:26, Eric Wong wrote:
> "brian m. carlson" <sandals@crustytoothpaste.net> wrote:
> > On 2020-08-03 at 18:37:27, Andreas Schwab wrote:
> > > On Jun 22 2020, brian m. carlson wrote:
> > > 
> > > > diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
> > > > index fc00d5946a..6483d792d3 100755
> > > > --- a/git-cvsexportcommit.perl
> > > > +++ b/git-cvsexportcommit.perl
> > > > @@ -22,6 +22,10 @@
> > > >  my $repo = Git->repository();
> > > >  $opt_w = $repo->config('cvsexportcommit.cvsdir') unless defined $opt_w;
> > > >  
> > > > +my $tmpdir = File::Temp->newdir;
> > > 
> > > File::Temp in perl 5.10 doesn't have the newdir method.
> > 
> > That method was added in File::Temp 0.19, which was added in 2007.  Does
> 
> 5.10.0 doesn't have ->newdir, but 5.10.1 does.  I figure nobody
> used 5.10.0 anymore since 5.10.1 exists and (IIRC) fixed many
> things wrong in 5.10.0.

Technically we support 5.8.8, I believe, which means this probably does
need to be fixed.  I'll let Andreas verify the proposed solution works
for him, and then send a patch.

> > For the record, I plan to propose that we drop support for Perl versions
> > earlier than 5.14 on December 2, since CentOS 6 will be dead at that
> > point.  I think a ten-year lifespan for an OS is quite generous and
> > we're still considering Perl 5.8.8, which nobody is publicly supporting
> > anymore.
> 
> That's probably fine.  I haven't looked at 5.12 and 5.14 changes
> enough to comment, but just moving rom 5.8 to 5.10.1 last year
> made my life considerably better (e.g. `//', `//=')

5.14 has nice things like s///r:

   # 5.12
   # We have to make a copy since s/// modifies its left side.
   my $foo = $ARGV[0];
   $foo =~ s/a/b/;

   # 5.14
   # Now we have non-destructive substitution.
   my $foo = $ARGV[0] =~ s/a/b/r;
-- 
brian m. carlson: Houston, Texas, US

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