git filter-branch equivalent

[Gregory Szorc]

On Thu, Apr 20, 2017 at 9:38 AM, Sean Farley <sean at farley.io> wrote:

> Uwe Brauer <oub at mat.ucm.es> writes:
>
> > Hi
> >
> > I hope this my last question concerning hg equivalents to git features,
> > but is there something comparable to git filter-branches?
>
> 'hg convert' is what you're looking for (e.g. branchmap, filemap, etc)
>

Yeah, convert is the closest Mercurial has. Although some aspects of
filter-branch can be accomplished via histedit, especially with the "exec"
action (which is provided by a 3rd party extension IIRC).

FWIW, git-filter-branch is just a shell script that iterates through
revisions and provides hook points ("filters") to perform actions at
various stages. If you know low-level Git commands, it isn't difficult to
roll your own specialized implementation. IMO its purpose is to give people
a common framework to code against for performing complex rewriting that
otherwise doesn't merit its own command. If Mercurial were to implement
similar functionality, it would almost certainly be a debug* command or an
extension.


>
> > Evolve, maybe?
>
> It's not really for this type of thing but you could try. Might be a
> good learning experience :-)
>
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