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694a577519
This teaches git-branch to limit its listing to branches that
are descendants to the named commit.
When you are using many topic branches, you often would want to
see which branch already includes a commit, so that you know
which can and cannot be rewound without disrupting other people.
One thing that sometimes happens to me is:
* Somebody sends a patch that is a good maint material. I
apply it to 'maint':
$ git checkout maint
$ git am -3 -s obvious-fix.patch
* Then somebody else sends another patch that is possibly a
good maint material, but I'd want to cook it in 'next' to be
extra sure. I fork a topic from 'maint' and apply the patch:
$ git checkout -b xx/maint-fix-foo
$ git am -3 -s ,xx-maint-fix-foo.patch
* A minor typo is found in the "obvious-fix.patch".
The above happens without pushing the results out, so I can
freely recover from it by amending 'maint', as long as I do not
forget to rebase the topics that were forked previously.
With this patch, I can do this to find out which topic
branches already contain the faulty commit:
$ git branch --contains=maint^
xx/maint-fix-foo
so I can rebase the xx/maint-fix-foo branch before merging it
to 'next'.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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