Re: [PATCH v3 0/4] history: add squash subcommand to fold a range

>
> Adds git history squash <revision-range> to fold a range of commits into its
> oldest one, reusing that commit's message and replaying any descendants on
> top.
>
> Changes in v3:
>
>  * Moved the feature out of git rebase and into a new git history squash
>    <revision-range> subcommand, per the list discussion. git rebase --squash
>    is dropped.
>  * Takes an arbitrary range (git history squash @~3.., git history squash
>    @~5..@~2), folding it into the oldest commit and replaying any
>    descendants on top.
>  * Implemented as a single tree operation rather than picking each commit,
>    so there are no repeated conflict stops (addresses Phillip's efficiency
>    point).

>  * A merge inside the range is folded fine, only a range with more than one
>    base is rejected.
>  * --reedit-message seeds the editor with every folded-in message, not just
>    the oldest.
>
> Harald Nordgren (4):
>   history: extract helper for a commit's parent tree
>   history: give commit_tree_ext a message template
>   history: add squash subcommand to fold a range
>   history: re-edit a squash with every message