Re: [PATCH 1/1] Add --first-parent support to interactive rebase.

Your MUA seems to mark the UTF-8 message you are sending out as
8859-1, which means your name in the message gets corrupt.

Björn Steinbrink [off-list ref] writes:

By default, rebase will take all commits from the branch that is to be
rebased which are missing in upstream. The new --first-parent option
allows to just follow the first parent and thus completely ignore
merges.

Additionally, when used together with --preserve-merges (which is the
more useful use-case) it will no longer rebase the commits from the
merged-in branches, but instead redo the merge with the original
parents.

That means that:
     ---H------I topicB

Please add a blank line after "means that:" for readability.

    /    \      \
...
does no longer become:
                -H'--------I'

Likewise; also, "no longer becomes:".

               /  \         \
              D'---E'---F'---G' topicA
             /
    A---B---C master
     \
      H---I topicB

but instead:
    A---B---C master

Likewise.

...
        ---------H---------I topicB

And crucially, you forgot to say "... when you do X".

I am assuming that you meant:

    This (picture) becomes this (picture) instead of this (picture)
    when you run "git rebase -p -m master topicA".

but without it, the nice ASCII drawings loses their value.

It is somewhat disturbing that this treats the first parent too
special.