[PATCH 2 of 2 evolve-ext] evolve: (issue4386) cleanup, split, fold and bijection in `hg prune`
Matt Harbison
mharbison72 at gmail.com
Mon Jun 29 18:18:14 CDT 2015
On Mon, 29 Jun 2015 15:33:34 -0400, Pierre-Yves David
<pierre-yves.david at ens-lyon.org> wrote:
>
>
> On 06/26/2015 10:56 AM, Laurent Charignon wrote:
>>
>>> On Jun 26, 2015, at 1:19 AM, Pierre-Yves David
>>> <pierre-yves.david at ens-lyon.org> wrote:
>>>
>>>
>>>
>>> On 06/25/2015 05:17 PM, Laurent Charignon wrote:
>>>> # HG changeset patch
>>>> # User Laurent Charignon <lcharignon at fb.com>
>>>> # Date 1435264430 25200
>>>> # Thu Jun 25 13:33:50 2015 -0700
>>>> # Node ID d2da33829da4b22bd7afd354f4780e8ab3d670a3
>>>> # Parent 0a1bf08ebdd93bfb199c18db4ea4e23c071e73cc
>>>> evolve: (issue4386) cleanup, split, fold and bijection in `hg prune`
>>>>
>>>> Before this patch, the prune command was splitting and folding
>>>> implicitely
>>>> based on the number of successors and precursors. This patch makes the
>>>> two behavior explicit by requesting a flag to perform a split or a
>>>> fold.
>>>>
>>>> diff --git a/hgext/evolve.py b/hgext/evolve.py
>>>> --- a/hgext/evolve.py
>>>> +++ b/hgext/evolve.py
>>>> @@ -2092,6 +2092,8 @@ def _getmetadata(**opts):
>>>> ('s', 'succ', [], _("successor changeset")),
>>>> ('r', 'rev', [], _("revisions to prune")),
>>>> ('k', 'keep', None, _("does not modify working copy during
>>>> prune")),
>>>> + ('', 'fold', False, _("perform a fold")),
>>>> + ('', 'split', False, _("perform a split")),
>>>
>>> s/perform/register/ ?
>>
>> I like perform better than register. Do you want to use "do" instead or
>> one of "execute", "achieve", "complete" ?
>> You like register because you register the operation by adding markers?
>
> We are performing neither a split of a fold here. Changesets already
> exists and no new content is created. so "perform" fit badly here.
>
> We are just creating markers, making something obsolete. when we add a
> successors flag, we do not create the successors either. We merely
> register it as a successors.
>
>>> help is maybe a bit too dry, but could be okay.
>>>
>>>> ('B', 'bookmark', '', _("remove revs only reachable from given"
>>>> " bookmark"))] + metadataopts,
>>>> _('[OPTION] [-r] REV...'))
>>>> @@ -2110,8 +2112,10 @@ def cmdprune(ui, repo, *revs, **opts):
>>>> You can use the ``--succ`` option to inform mercurial that a
>>>> newer version
>>>> of the pruned changeset exists.
>>>>
>>>> - If you precise one revision to prune and multiple successor, it
>>>> is a split.
>>>> - If you precise several commits and a single successor, it is a
>>>> fold.
>>>> + If you precise one revision to prune and multiple successor, it
>>>> is a split
>>>> + and you have to add --split.
>>>> + If you precise several commits and a single successor, it is a
>>>> fold and you
>>>> + have to add --fold.
>>>> If you precise more than one revision to prune and more than
>>>> one successor
>>>> there has to be one successor per revision to prune and a 1-1
>>>> bijection
>>>> is done.
>>>> @@ -2120,6 +2124,8 @@ def cmdprune(ui, repo, *revs, **opts):
>>>> succs = opts['new'] + opts['succ']
>>>> bookmark = opts.get('bookmark')
>>>> metadata = _getmetadata(**opts)
>>>> + fold = opts.get('fold')
>>>> + split = opts.get('split')
>
> We probably want to bail out if multiple flag are specified.
>
>>>> if bookmark:
>>>> marks,revs = _reachablefrombookmark(repo, revs, bookmark)
>>>> @@ -2165,6 +2171,13 @@ def cmdprune(ui, repo, *revs, **opts):
>>>> raise util.Abort(msg)
>>>> relations = [(p, (s,)) for p, s in zip(precs, sucs)]
>>>> else:
>>>> + if len(precs) == 1 and len(sucs) > 1 and not split:
>>>> + msg = "please add --split if you want to do a split"
>>>
>>> 1) We want to be more precise about why we abort
>>> 2) Our canonical wording is "do you want X?"
>>>
>>> "1 precursor for %d successors, do you want --split?"
>>
>> Good point, I will update that
>>>
>>>> + raise util.Abort(msg)
>>>> + if len(sucs) == 1 and len(precs) > 1 and not fold:
>>>> + msg = "please add --fold if you want to do a fold"
>>>
>>> ditto
>>>
>>>> + raise util.Abort(msg)
>>>> +
>>>> relations = [(p, sucs) for p in precs]
>>>>
>>>> wdp = repo['.']
>>>> diff --git a/tests/test-corrupt.t b/tests/test-corrupt.t
>>>> --- a/tests/test-corrupt.t
>>>> +++ b/tests/test-corrupt.t
>>>> @@ -101,7 +101,7 @@
>>>> summary: add A
>>>>
>>>>
>>>> - $ hg kill -n -1 -- -2 -3
>>>> + $ hg kill --fold -n -1 -- -2 -3
>>>
>>>
>>> As we are looking at it, these `hg kill` want to be replaced by `hg
>>> prune`
>>
>> Should we also remove the alias in another series?
>
> Sure, this belong to another series.
Any chance of keeping it (maybe hidden)? I've typed it so many times, it
will probably take quite a bit of time to retrain.
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