Mercurial > hg
annotate tests/autodiff.py @ 33377:5d63e5f40bea
revset: define successors revset
This revset returns all successors, including transit nodes and the source
nodes (to be consistent with existing revsets like "ancestors").
To filter out transit nodes, use `successors(X)-obsolete()`.
To filter out divergent case, use `successors(X)-divergent()-obsolete()`.
The revset could be useful to define rebase destination, like:
`max(successors(BASE)-divergent()-obsolete())`. The `max` is to deal with
splits.
There are other implementations where `successors` returns just one level of
successors, and `allsuccessors` returns everything. I think `successors`
returning all successors by default is more user friendly. We have seen
cases in production where people use 1-level `successors` while they really
want `allsuccessors`. So it seems better to just have one single revset
returning all successors by default to avoid user errors.
In the future we might want to add `depth` keyword argument to it and for
other revsets like `ancestors` etc. Or even build some flexible indexing
syntax [1] to satisfy people having the depth limit requirement.
[1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-July/101140.html
author | Jun Wu <quark@fb.com> |
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date | Mon, 10 Jul 2017 10:56:40 -0700 |
parents | 46ba2cdda476 |
children | 154754d1f137 |
rev | line source |
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1 # Extension dedicated to test patch.diff() upgrade modes |
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2 |
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3 from __future__ import absolute_import |
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4 |
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5 from mercurial import ( |
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6 error, |
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7 patch, |
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8 registrar, |
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9 scmutil, |
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10 ) |
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11 |
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12 cmdtable = {} |
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13 command = registrar.command(cmdtable) |
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14 |
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15 @command('autodiff', |
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16 [('', 'git', '', 'git upgrade mode (yes/no/auto/warn/abort)')], |
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17 '[OPTION]... [FILE]...') |
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18 def autodiff(ui, repo, *pats, **opts): |
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19 diffopts = patch.difffeatureopts(ui, opts) |
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20 git = opts.get('git', 'no') |
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21 brokenfiles = set() |
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22 losedatafn = None |
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23 if git in ('yes', 'no'): |
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24 diffopts.git = git == 'yes' |
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25 diffopts.upgrade = False |
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26 elif git == 'auto': |
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27 diffopts.git = False |
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28 diffopts.upgrade = True |
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29 elif git == 'warn': |
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30 diffopts.git = False |
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31 diffopts.upgrade = True |
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32 def losedatafn(fn=None, **kwargs): |
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33 brokenfiles.add(fn) |
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34 return True |
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35 elif git == 'abort': |
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36 diffopts.git = False |
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37 diffopts.upgrade = True |
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38 def losedatafn(fn=None, **kwargs): |
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39 raise error.Abort('losing data for %s' % fn) |
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40 else: |
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41 raise error.Abort('--git must be yes, no or auto') |
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42 |
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43 node1, node2 = scmutil.revpair(repo, []) |
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44 m = scmutil.match(repo[node2], pats, opts) |
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45 it = patch.diff(repo, node1, node2, match=m, opts=diffopts, |
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46 losedatafn=losedatafn) |
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47 for chunk in it: |
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48 ui.write(chunk) |
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49 for fn in sorted(brokenfiles): |
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50 ui.write(('data lost for: %s\n' % fn)) |