Re: [PATCH] fetch-pack: fix object_id of exact sha1

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On Sat, Feb 27, 2016 at 05:32:54PM -0300, Gabriel Souza Franco wrote:

> Commit 58f2ed0 (remote-curl: pass ref SHA-1 to fetch-pack as well,
> 2013-12-05) added support for specifying a SHA-1 as well as a ref name.
> Add support for specifying just a SHA-1 and set the ref name to the same
> value in this case.
> 
> Signed-off-by: Gabriel Souza Franco <gabrielfrancosouza@xxxxxxxxx>
> ---
>  builtin/fetch-pack.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
> index 79a611f..d7e439a 100644
> --- a/builtin/fetch-pack.c
> +++ b/builtin/fetch-pack.c
> @@ -16,10 +16,10 @@ static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
>  	struct ref *ref;
>  	struct object_id oid;
>  
> -	if (!get_oid_hex(name, &oid) && name[GIT_SHA1_HEXSZ] == ' ')
> -		name += GIT_SHA1_HEXSZ + 1;
> -	else
> +	if (get_oid_hex(name, &oid))
>  		oidclr(&oid);
> +	else if (name[GIT_SHA1_HEXSZ] == ' ')
> +		name += GIT_SHA1_HEXSZ + 1;

This makes sense to me. I wonder if we should be more particular about
the pure-sha1 case consuming the whole string, though. E.g., if we get:

  1234567890123456789012345678901234567890-bananas

that should probably not have sha1 1234...

I don't think it should ever really happen in practice, but it might be
worth noticing and complaining when name[GIT_SHA1_HEXSZ] is neither
space nor '\0'.

-Peff
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