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Re: [PATCH 02/14] builtin/repack: replace hard-coded constant




On Mon, Oct 08, 2018 at 07:01:27PM -0400, Eric Sunshine wrote:
> On Mon, Oct 8, 2018 at 6:27 PM Stefan Beller <sbeller@xxxxxxxxxx> wrote:
> > On Mon, Oct 8, 2018 at 2:57 PM brian m. carlson
> > <sandals@xxxxxxxxxxxxxxxxxxxx> wrote:
> > > -               if (line.len != 40)
> > > -                       die("repack: Expecting 40 character sha1 lines only from pack-objects.");
> > > +               if (line.len != the_hash_algo->hexsz)
> > > +                       die("repack: Expecting full hex object ID lines only from pack-objects.");
> >
> > This is untranslated as it is plumbing? If so, maybe
> >
> >     if (is_sha1(the_hash_algo)
> >         die("repack: Expecting 40 character sh...
> >     else
> >         die(repack: Expecting full hex object ID in %s, of length %d",
> >             the_hash_algo->name,
> >             the_hash_algo->hexsz);
> 
> Special-casing for SHA-1 seems overkill for an error message. A script
> expecting this particular error condition and this particular error
> message would be fragile indeed.

Yeah, I don't think a special case is needed here.  Moreover, since we
just invoked pack-objects ourselves and are now reading the output of
it, seeing this error message means that someone has broken Git in a
significant way.  The end user should never see this message.
-- 
brian m. carlson: Houston, Texas, US
OpenPGP: https://keybase.io/bk2204

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