Re: [BUG] Cannot push some grafted branches

On Mon, 17 Dec 2012 09:43:53 +0100
Thomas Rast [off-list ref] wrote:

Junio C Hamano [off-list ref] writes:

quoted

Yann Dirson [off-list ref] writes:

quoted

....  In this respect, they seem to be
lacking a few features, when compared to "replace" refs, but they have different
uses, ...

Not reallyl; grafts were old hack whose use is still supported with
its original limitations; replace is meant to replace all uses of
grafts while removing grafts' largest warts.

I suppose there's the additional issue that grafts are much easier to
use than replacements if you really only want to replace some parent
lists.  With replace you need to handcraft the replacement commits, and
git-replace(1) unhelpfully does not say this, much less gives an example
how to do it.

Right, replace refs can surely be made easier to use.  The requirement to craft a
new commit manually is a major step back in ease of use.

Maybe something like "git replace -p <orig-commit> <parent>..." to just provide a simple
API to the exact graft functionnality would be good.  But it would be commit-specific, whereas
replace refs are indeed more generic, and, one could want to rewrite any other part of the commit,
so we could prefer a more general mechanism.

Something that could be useful in this respect, would be an --amend like option to git-commit, like
"git commit --replace".  But unfortunately it does not allow to change parents, and it has the
drawback of requiring that HEAD points to the commit to be replaced.

So maybe, if there are no other idea, a simple "git graft" command that would wrap "git replace",
would fill the gap.

-- 
Yann Dirson - Bertin Technologies