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)

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#require no-symlink

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# The following script was used to create the bundle:

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#

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# hg init symlinks

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# cd symlinks

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# echo a > a

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# mkdir d

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# echo b > d/b

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# ln -s a a.lnk

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# ln -s d/b d/b.lnk

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# hg ci -Am t

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# hg bundle --base null ../test-no-symlinks.hg

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Extract a symlink on a platform not supporting them

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  $ hg init t

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  $ cd t

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  $ hg pull -q "$TESTDIR/bundles/test-no-symlinks.hg"

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  $ hg update

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

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  $ cat a.lnk && echo

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  a

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  $ cat d/b.lnk && echo

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  d/b

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Copy a symlink and move another

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  $ hg copy a.lnk d/a2.lnk

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  $ hg mv d/b.lnk b2.lnk

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  $ hg ci -Am copy

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  $ cat d/a2.lnk && echo

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  a

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  $ cat b2.lnk && echo

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  d/b

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Bundle and extract again

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  $ hg bundle --base null ../symlinks.hg

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  2 changesets found

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  $ cd ..

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  $ hg init t2

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  $ cd t2

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  $ hg pull ../symlinks.hg

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  pulling from ../symlinks.hg

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  requesting all changes

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  adding changesets

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  adding manifests

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  adding file changes

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  added 2 changesets with 6 changes to 6 files

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  new changesets d326ae2d01ee:71d85cf3ba90 (2 drafts)

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  (run 'hg update' to get a working copy)

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  $ hg update

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

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  $ cat a.lnk && echo

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  a

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  $ cat d/a2.lnk && echo

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  a

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  $ cat b2.lnk && echo

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  d/b