On Thu, Apr 04, 2019 at 06:31:25PM +0900, Junio C Hamano wrote:
> Jeff King <peff@xxxxxxxx> writes:
>
> > I do still think it is likely to be a mistake. I think Junio's point,
> > though is: who cares if the mistake was made? For the most part you can
> > continue to use the tag as if the mistake had never been made, because
> > Git peels through multiple layers as necessary.
>
> Nicely said.
>
> If we forget to peel, that is a bigger problem, but I do not think
> it makes any sense to single out tag-of-tag as "curious" and forbid
> it, when we silently allow tag-of-blob or tag-of-tree happily.
IMHO the difference between those cases is that it is very easy to type
something natural to get a tag of tag, like:
git tag -m foo mytag
# oops, try again
git tag -m bar -f mytag mytag
but you have to take pretty specific steps to get a tag of a blob or
tree, like:
git tag mytag HEAD:path
or
git tag mytag HEAD^{tree}
Unless you have a ref pointing to a blob or tree in the first place, of
course. But then it is a chicken-and-egg question. Didn't you have to do
something specific to get that tag in the first place?
-Peff
