Re: [PATCH v5 04/40] Add Git/Packet.pm from parts of t0021/rot13-filter.pl

[Christian Couder <christian.couder@gmail.com>]

On Thu, Aug 3, 2017 at 9:11 PM, Junio C Hamano <gitster@pobox.com> wrote:

>> diff --git a/perl/Git/Packet.pm b/perl/Git/Packet.pm
>> new file mode 100644
>> index 0000000000..aaffecbe2a
>> --- /dev/null
>> +++ b/perl/Git/Packet.pm
>> @@ -0,0 +1,71 @@
>> +package Git::Packet;
>> +use 5.008;
>> +use strict;
>> +use warnings;
>> +BEGIN {
>> +     require Exporter;
>> +     if ($] < 5.008003) {
>> +             *import = \&Exporter::import;
>> +     } else {
>> +             # Exporter 5.57 which supports this invocation was
>> +             # released with perl 5.8.3
>> +             Exporter->import('import');
>> +     }
>> +}
>
> This is merely me being curious, but do we want this boilerplate,
> which we do not use in perl/Git.pm but we do in perl/Git/I18N.pm?

I don't know. I copied it as I thought that we wanted to support Perl
versions starting from 5.8.0, but I am ok to remove it or to leave it
depending on what the Perl experts think (CCing AEvar) and what we
decide.

>> +our @EXPORT = qw(
>> +                     packet_bin_read
>> +                     packet_txt_read
>> +                     packet_bin_write
>> +                     packet_txt_write
>> +                     packet_flush
>> +             );
>> +our @EXPORT_OK = @EXPORT;
>
> We can see that you made sure that the only thing 05/40 needs to do
> is to use this package and remove the definition of these subs,
> without having to touch any caller by first updating the original
> implementation in 03/40 and then exporting these names in 04/40.
> Knowing that the preparation is nicely done already, it is a bit
> irritating to see that 05/40 is a separate patch, as we need to
> switch between the patches to see if there is any difference between
> the original implementation of the subs, and the replacement
> implemented in here.  It would have been nicer to have changes in
> 04/40 and 05/40 in a single patch.

Ok, I have squashed 04/40 and 05/40 together in my current version of
this series.