Mercurial > hg
comparison tests/test-revset.t @ 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 | 4672db164c98 |
children | 9467d5337292 |
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33376:d5a38eae67e5 | 33377:5d63e5f40bea |
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18 > | 18 > |
19 > mercurial.revset.symbols['r3232'] = r3232 | 19 > mercurial.revset.symbols['r3232'] = r3232 |
20 > EOF | 20 > EOF |
21 $ cat >> $HGRCPATH << EOF | 21 $ cat >> $HGRCPATH << EOF |
22 > [extensions] | 22 > [extensions] |
23 > drawdag=$TESTDIR/drawdag.py | |
23 > testrevset=$TESTTMP/testrevset.py | 24 > testrevset=$TESTTMP/testrevset.py |
24 > EOF | 25 > EOF |
25 | 26 |
26 $ try() { | 27 $ try() { |
27 > hg debugrevspec --debug "$@" | 28 > hg debugrevspec --debug "$@" |
4281 P=[1] | 4282 P=[1] |
4282 $ P=3 hg --config revsetalias.P=2 log -r . -T '\n' | 4283 $ P=3 hg --config revsetalias.P=2 log -r . -T '\n' |
4283 P=[3] | 4284 P=[3] |
4284 | 4285 |
4285 $ cd .. | 4286 $ cd .. |
4287 | |
4288 Test obsstore related revsets | |
4289 | |
4290 $ hg init repo1 | |
4291 $ cd repo1 | |
4292 $ cat <<EOF >> .hg/hgrc | |
4293 > [experimental] | |
4294 > evolution = createmarkers | |
4295 > EOF | |
4296 | |
4297 $ hg debugdrawdag <<'EOS' | |
4298 > F G | |
4299 > |/ # split: B -> E, F | |
4300 > B C D E # amend: B -> C -> D | |
4301 > \|/ | # amend: F -> G | |
4302 > A A Z # amend: A -> Z | |
4303 > EOS | |
4304 | |
4305 $ hg log -r 'successors(Z)' -T '{desc}\n' | |
4306 Z | |
4307 | |
4308 $ hg log -r 'successors(F)' -T '{desc}\n' | |
4309 F | |
4310 G | |
4311 | |
4312 $ hg tag --remove --local C D E F G | |
4313 | |
4314 $ hg log -r 'successors(B)' -T '{desc}\n' | |
4315 B | |
4316 D | |
4317 E | |
4318 G | |
4319 | |
4320 $ hg log -r 'successors(B)' -T '{desc}\n' --hidden | |
4321 B | |
4322 C | |
4323 D | |
4324 E | |
4325 F | |
4326 G | |
4327 | |
4328 $ hg log -r 'successors(B)-obsolete()' -T '{desc}\n' --hidden | |
4329 D | |
4330 E | |
4331 G | |
4332 | |
4333 $ hg log -r 'successors(B+A)-divergent()' -T '{desc}\n' | |
4334 A | |
4335 Z | |
4336 B | |
4337 | |
4338 $ hg log -r 'successors(B+A)-divergent()-obsolete()' -T '{desc}\n' | |
4339 Z |