Re: [PATCH v3 1/4] refs: introduce `is_pseudoref()` and `is_headref()`

> On Mon, Jan 29, 2024 at 12:35:24PM +0100, Karthik Nayak wrote:
>
>> +int is_pseudoref(struct ref_store *refs, const char *refname)
>> [...]
>> +	if (ends_with(refname, "_HEAD")) {
>> +		 read_ref_full(refname, RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
>> +		      &oid, NULL);
>> +		 return !is_null_oid(&oid);
>> +	}
>
> I was going to prepare a patch on top, but since it looks like this was
> reverted out of 'next' to be revamped, I thought I'd mention it now:
> -Wunused-parameter notices that we never use the "refs" parameter to the
> function. And indeed it looks like a (possible) bug, since
> read_ref_full() is going to use the_repository to find the ref store.
>
> I think you'd want something like this squashed in (note that it also
> fixes a slight indent problem in the first block):
>
> diff --git a/refs.c b/refs.c
> index 3190df8d81..0d65c31117 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -875,15 +875,17 @@ int is_pseudoref(struct ref_store *refs, const char *refname)
>  		return 0;
>
>  	if (ends_with(refname, "_HEAD")) {
> -		 read_ref_full(refname, RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
> -		      &oid, NULL);
> -		 return !is_null_oid(&oid);
> +		refs_resolve_ref_unsafe(refs, refname,
> +					RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
> +					&oid, NULL);
> +		return !is_null_oid(&oid);
>  	}
>
>  	for (i = 0; i < ARRAY_SIZE(irregular_pseudorefs); i++)
>  		if (!strcmp(refname, irregular_pseudorefs[i])) {
> -			read_ref_full(refname, RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
> -						  &oid, NULL);
> +			refs_resolve_ref_unsafe(refs, refname,
> +						RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE,
> +						&oid, NULL);
>  			return !is_null_oid(&oid);
>  		}
>
>
> -Peff