[issue3219] graft should allow "regrafting" ancestors with --force

[Matt Oswald]

New submission from Matt Oswald <moswald at gmail.com>:

I want to graft an ancestor revision to the tip, because that one revision 
is the only thing that we want to keep from an old branch that got merged 
into the mainline and then that merge was backed out.

@ tip
|
|
0 backout merge
|
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0 merge that shouldn't have happened
|\
| \
| |
0 | other revision
| 0 interesting revision on "bad" branch

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messages: 18736
nosy: moswald
priority: feature
status: unread
title: graft should allow "regrafting" ancestors with --force

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Mercurial issue tracker <bugs at mercurial.selenic.com>
<http://mercurial.selenic.com/bts/issue3219>
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