outgoing: add a simple fastpath when there is no common This further speed up case like `hg bundle --all` for larger repository. ### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog # benchmark.name = hg.command.bundle # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.revs = all # benchmark.variants.type = none-streamv2 before: 316.749699 after: 311.165461 (-1.76%, -5.58) There is further work to be done in this area like not doing any outgoing computation in the stream case for example. however the recent changes already gives use a large win for a small amount of local work. ### benchmark.name = hg.command.bundle # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.revs = all # benchmark.variants.type = none-streamv2 ## data-env-vars.name = mercurial-public-2024-03-22-zstd-sparse-revlog pre-%ln-change: 1.263859 the-%ln-change: 0.700229 (-44.60%, -0.56) prev-changeset: 0.496050 (-60.75%, -0.77) this-changeset: 0.495243 (-60.81%, -0.77) ## data-env-vars.name = tryton-public-2024-03-22-zstd-sparse-revlog pre-%ln-change: 2.975765 the-%ln-change: 1.870798 (-37.13%, -1.10) prev-changeset: 1.461583 (-50.88%, -1.51) this-changeset: 1.469185 (-50.63%, -1.51) ## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog pre-%ln-change: 4.540080 the-%ln-change: 3.401700 (-25.07%, -1.14) prev-changeset: 2.915810 (-35.78%, -1.62) this-changeset: 2.911643 (-35.87%, -1.63) ## data-env-vars.name = heptapod-public-2024-03-25-zstd-sparse-revlog pre-%ln-change: 10.138396 the-%ln-change: 7.750458 (-23.55%, -2.39) prev-changeset: 6.665565 (-34.25%, -3.47) this-changeset: 6.672078 (-34.19%, -3.47) ## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog pre-%ln-change: 399.484481 the-%ln-change: 346.508952 (-13.26%, -52.98) prev-changeset: 316.749699 (-20.71%, -82.73) this-changeset: 311.165461 (-22.11%, -88.32)

     1

  $ hg init repo

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  $ cd repo

     3

     4

  $ echo "added file1" > file1

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  $ echo "another line of text" >> file1

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  $ echo "added file2" > file2

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  $ hg add file1 file2

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  $ hg commit -m "added file1 and file2"

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  $ echo "changed file1" >> file1

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  $ hg commit -m "changed file1"

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  $ hg -q log

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  1:dfab7f3c2efb

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  0:c3fa057dd86f

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  $ hg id

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  dfab7f3c2efb tip

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  $ hg update -C 0

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  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

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  $ hg id

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  c3fa057dd86f

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  $ echo "changed file1" >> file1

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  $ hg id

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  c3fa057dd86f+

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  $ hg revert --no-backup --all

    29

  reverting file1

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  $ hg diff

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  $ hg status

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  $ hg id

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  c3fa057dd86f

    34

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  $ hg update

    36

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

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  $ hg diff

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  $ hg status

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  $ hg id

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  dfab7f3c2efb tip

    41

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  $ hg update -C 0

    43

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

    44

  $ echo "changed file1 different" >> file1

    45

    46

  $ hg update

    47

  merging file1

    48

  warning: conflicts while merging file1! (edit, then use 'hg resolve --mark')

    49

  0 files updated, 0 files merged, 0 files removed, 1 files unresolved

    50

  use 'hg resolve' to retry unresolved file merges

    51

  [1]

    52

    53

  $ hg diff --nodates

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  diff -r dfab7f3c2efb file1

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  --- a/file1

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  +++ b/file1

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  @@ -1,3 +1,7 @@

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   added file1

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   another line of text

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  +<<<<<<< working copy: c3fa057dd86f - test: added file1 and file2

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  +changed file1 different

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  +=======

    63

   changed file1

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  +>>>>>>> destination:  dfab7f3c2efb - test: changed file1

    65

    66

  $ hg status

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  M file1

    68

  ? file1.orig

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  $ hg id

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  dfab7f3c2efb+ tip

    71

    72

  $ hg revert --no-backup --all

    73

  reverting file1

    74

  $ hg diff

    75

  $ hg status

    76

  ? file1.orig

    77

  $ hg id

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  dfab7f3c2efb tip

    79

    80

  $ hg revert -r tip --no-backup --all

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  $ hg diff

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  $ hg status

    83

  ? file1.orig

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  $ hg id

    85

  dfab7f3c2efb tip

    86

    87

  $ hg update -C

    88

  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

    89

  $ hg diff

    90

  $ hg status

    91

  ? file1.orig

    92

  $ hg id

    93

  dfab7f3c2efb tip

    94