From: Derrick Stolee <stolee@gmail.com>
Date: Wed, 25 Apr 2018 14:11:41 GMT
Subject: Re: [PATCH v3 5/9] ref-filter: use generation number for --contains
Message-ID: <1c63c945-aea0-4d15-9d0c-35092a00c30d@gmail.com>
In-Reply-To: <868t9cfn6f.fsf@gmail.com>

On 4/24/2018 2:56 PM, Jakub Narebski wrote:
> Derrick Stolee <stolee@gmail.com> writes:
>> One way to fix this is to call 'prepare_commit_graph()' directly and
>> then test that 'commit_graph' is non-null before performing any
>> parses. I'm not thrilled with how that couples the commit-graph
>> implementation to this feature, but that may be necessary to avoid
>> regressions in the non-commit-graph case.
> Another possible solution (not sure if better or worse) would be to
> change the signature of contains_tag_algo() function to take parameter
> or flag that would decide whether to parse "wants".

If I reorder commits so "commit-graph:always load commit-graph 
information" is before this one, then we can call 
load_commit_graph_info() which just fills the generation and graph_pos 
information. This will keep the coupling very light, instead of needing 
to call prepare_commit_graph() or checking the config setting.

Thanks,
-Stolee