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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Minimal hgk check

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  $ echo "[extensions]" >> $HGRCPATH

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  $ echo "hgk=" >> $HGRCPATH

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  $ hg init repo

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  $ cd repo

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  $ echo a > a

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  $ hg ci -Am adda

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  adding a

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  $ hg debug-cat-file commit 0

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  tree a0c8bcbbb45c

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  parent 000000000000

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  author test 0 0

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  revision 0

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  branch default

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  phase draft

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  adda

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  $ echo b > b

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  $ hg ci -Am addb

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  adding b

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  $ hg log -T '{node}\n'

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  102a90ea7b4a3361e4082ed620918c261189a36a

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  07f4944404050f47db2e5c5071e0e84e7a27bba9

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  $ hg debug-diff-tree 07f494440405 102a90ea7b4a

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  :000000 100664 000000000000 1e88685f5dde N	b	b

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  $ hg debug-diff-tree 07f494440405 102a90ea7b4a --patch

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  diff --git a/b b/b

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  new file mode 100644

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  --- /dev/null

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  +++ b/b

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  @@ -0,0 +1,1 @@

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  +b

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Ensure that diff-tree output isn't affected by diffopts

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  $ hg --config diff.noprefix=True debug-diff-tree 07f494440405 102a90ea7b4a

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  :000000 100664 000000000000 1e88685f5dde N	b	b

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  $ hg --config diff.noprefix=True debug-diff-tree --patch 07f494440405 102a90ea7b4a

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  diff --git a/b b/b

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  new file mode 100644

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  --- /dev/null

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  +++ b/b

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  @@ -0,0 +1,1 @@

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  +b

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  $ cd ..