On Mon, Jun 8, 2015 at 4:45 AM, Michael Haggerty <[email protected]> wrote:
> delete_ref() uses a different convention for its old_sha1 parameter
> than, say, ref_transaction_delete(): NULL_SHA1 means not to check the
> old value. Make this fact a little bit clearer in the code by handling
> it in explicit, commented code rather than burying it in a conditional
> expression.
>
> Signed-off-by: Michael Haggerty <[email protected]>
> ---
> refs.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/refs.c b/refs.c
> index b575bb8..f9d87b6 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -2795,10 +2795,13 @@ int delete_ref(const char *refname, const unsigned
> char *old_sha1,
> struct ref_transaction *transaction;
> struct strbuf err = STRBUF_INIT;
>
> + /* Treat NULL_SHA1 as "don't care" */
and by "don't care" you mean we still care about getting it deleted,
the part we don't care about is the particular sha1 (could be a bogus ref).
> + if (old_sha1 && is_null_sha1(old_sha1))
> + old_sha1 = NULL;
> +
> transaction = ref_transaction_begin(&err);
> if (!transaction ||
> - ref_transaction_delete(transaction, refname,
> - (old_sha1 && !is_null_sha1(old_sha1)) ?
> old_sha1 : NULL,
> + ref_transaction_delete(transaction, refname, old_sha1,
> flags, NULL, &err) ||
> ref_transaction_commit(transaction, &err)) {
> error("%s", err.buf);
> --
> 2.1.4
>
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