annotate tests/test-revset-dirstate-parents.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>
date Mon, 10 Jul 2017 10:56:40 -0700
parents 7d87f672d069
children 7bbc4e113e5f
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1 $ HGENCODING=utf-8
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2 $ export HGENCODING
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3
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4 $ try() {
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5 > hg debugrevspec --debug $@
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6 > }
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7
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8 $ log() {
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9 > hg log --template '{rev}\n' -r "$1"
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10 > }
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11
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12 $ hg init repo
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13 $ cd repo
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14
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15 $ try 'p1()'
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16 (func
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17 ('symbol', 'p1')
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18 None)
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19 * set:
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20 <baseset []>
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21 $ try 'p2()'
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22 (func
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23 ('symbol', 'p2')
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24 None)
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25 * set:
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26 <baseset []>
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27 $ try 'parents()'
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28 (func
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29 ('symbol', 'parents')
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30 None)
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31 * set:
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32 <baseset+ []>
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33
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34 null revision
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35 $ log 'p1()'
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36 $ log 'p2()'
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37 $ log 'parents()'
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38
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39 working dir with a single parent
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40 $ echo a > a
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41 $ hg ci -Aqm0
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42 $ log 'p1()'
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43 0
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44 $ log 'tag() and p1()'
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45 $ log 'p2()'
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46 $ log 'parents()'
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47 0
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48 $ log 'tag() and parents()'
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49
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50 merge in progress
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51 $ echo b > b
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52 $ hg ci -Aqm1
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53 $ hg up -q 0
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54 $ echo c > c
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55 $ hg ci -Aqm2
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56 $ hg merge -q
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57 $ log 'p1()'
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58 2
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59 $ log 'p2()'
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60 1
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61 $ log 'tag() and p2()'
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62 $ log 'parents()'
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63 1
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64 2
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65
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66 $ cd ..