news from the topic experiment

Pierre-Yves David pierre-yves.david at
Tue Sep 20 09:39:07 EDT 2016

On 09/17/2016 08:21 AM, David Demelier wrote:
> 2016-09-16 18:35 GMT+02:00 Pierre-Yves David <pierre-yves.david at>:
>> This is a very valid feedback. The start of the topic experiments come from
>> the finding that after 5 years of struggle trying to make bookmarks viable,
>> they seems too alien to other Mercurial concept to ever work in a
>> satisfactory way.
> Okay so now I assume bookmarks no longer exist.
> First, I've seen a hg stack function, I would suggest naming it
> 'topics' so it more meaningful and more appropriate since some
> commands have plural forms (e.g. tag/tags, branch/branches).
>> - If you work on multiple feature at the same time (ie: have multiple
>> anonymous/bookmarked heads, you can use topic locally to organize them,
> Okay, so to my point of view, local topics seem to work pretty fine
> and looks like a good idea. My major disappointment with bookmarks is
> the combination of "default" and "@", with topics, you will just need
> to hg up default or the-topic. no more @, default and
> featured-bookmarks :-)
>> - If you do advanced code review and use non-publishing review to exchange
>> draft with other people. You can use topics to organize these.
> This is exactly what I dislike.
> You need to use a non-publishing server to share topics. This means I
> can rewrite history, delete revisions on the remote when using topics.
> Thus, breaking any basic users who just do some hg pull and build.
> Those users will not understand why their local repositories are
> cluttered with many revisions that does not exist anymore. Probably we
> should mix evolve features + topics so that we can use on
> non-publishing server?
> Personally, I will probably use topics only locally if it will still
> requires only draft changesets and do code review with a pre-push
> manner using some additional workflow (reviewboard, mailing lists,
> etc...)

At this point, reference to non-publishing repository implies evolution 
support. At some point evolution will stop being experimental and turned 
on by default.


Pierre-Yves David

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