Re: [PATCH] commit-graph: when incompatible with graphs, indicate why

> On 2/11/21 10:39 AM, Johannes Schindelin via GitGitGadget wrote:
>> From: Johannes Schindelin <johannes.schindelin@gmx.de>
>> 
>> When `gc.writeCommitGraph = true`, it is possible that the commit-graph
>> is _still_ not written: replace objects, grafts and shallow repositories
>> are incompatible with the commit-graph feature.
>> 
>> Under such circumstances, we need to indicate to the user why the
>> commit-graph was not written instead of staying silent about it.
>
> This feedback is valuable for these corner cases, especially now
> that the commit-graph is getting less and less "optional" as time
> goes on.
>
>> +		if (hashmap_get_size(&r->objects->replace_map->map)) {
>> +			warning(_("repository contains replace objects; "
>> +			       "skipping commit-graph"));
> ...
>> +		warning(_("repository is shallow; skipping commit-graph"));
>
> These warnings make sense to me.