Re: git-cherry-pick and git-commit --amend in version 1.7.6.4

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Jay Soffian <jaysoffian@xxxxxxxxx> writes:

> On Wed, Oct 5, 2011 at 5:55 PM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
>> I think the sequencer state needs to be removed when the command aborts.
>
> Or written later in do_pick_commit().

As a general direction, I think it makes tons of sense ot delay writing
out these state files before you really commit that the user will be in
the cherry-pick (or revert) sequence.

I am not sure if do_pick_commit() is the best place to do so. Wouldn't it
be necessary to special case the first round at least? The pick can fail
in one of two ways:

 - It does not even start. This is the case I illustrated in the earlier
   message, and we do not want to leave sequencer state.

 - It stops with conflict. At this point, it probably is OK to say that
   the user is committed to go with the sequencer flow and the next step
   would be to help Git resolve conflicts and proceed, and in this case we
   do want the sequencer state.

And once we picked/reverted at least one commit, if there are more, the
user knows the sequencer flow is in progress, and it is perfectly fine to
see the error message from "commit --amend".

It's just the "commit --amend" message that says I cannot amend felt
utterly out of place, immediately after seeing "cherry-pick" that tried to
pick only one commit did _not_ even start.
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