Re: [PATCH] unpack-trees: allow missing CE_SKIP_WORKTREE objs

[Ben Peart <peartben@gmail.com>]

On 10/9/2018 5:30 AM, Junio C Hamano wrote:
> Jonathan Tan <jonathantanmy@google.com> writes:
> 
>> @@ -1635,6 +1635,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
>>   				o->result.cache_tree = cache_tree();
>>   			if (!cache_tree_fully_valid(o->result.cache_tree))
>>   				cache_tree_update(&o->result,
>> +						  WRITE_TREE_SKIP_WORKTREE_MISSING_OK |
>>   						  WRITE_TREE_SILENT |
>>   						  WRITE_TREE_REPAIR);
>>   		}
> 
> Hmmmm.  Should this be passing the bit unconditionally?  Shouldn't
> it be set only when we are doing lazy clone?  A non-lazy clone that
> merely uses sparse checkout has nowhere else to turn to if it loses
> a blob object that currently is not necessary to complete a checkout,
> unlike a repository with promisor.
> 

I agree.  I believe this logic should only be triggered when running in 
a partial clone repo. Otherwise, we're potentially changing the behavior 
of 'normal' repos unnecessarily.