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smartset: use native set operations as fast paths...

smartset: use native set operations as fast paths For set operations like "&" and "-", where we know both basesets have their sets ready, and the first set is sorted, use the native Python set operations as a fast path. Note: "+" is not optimized as that will break the ordering. This leads to noticeable improvements on performance: revset | before | after | delta ---------------------------------------------------------------- draft() & draft() & draft() & draft() | 776 | 477 | -39% draft() + draft() + draft() + draft() | 2849 | 2864 | draft() - draft() + draft() - draft() | 943 | 240 | -75% draft() - draft() - draft() - draft() | 557 | 197 | -64% (time measured in microseconds)

Matt Mackall - - Load All Authors

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      https://bz.mercurial-scm.org/612

        $ hg init

        $ mkdir src

        $ echo a > src/a.c

        $ hg ci -Ama

        adding src/a.c

        $ hg mv src source

        moving src/a.c to source/a.c (glob)

        $ hg ci -Ammove

        $ hg co -C 0

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

        $ echo new > src/a.c

        $ echo compiled > src/a.o

        $ hg ci -mupdate

        created new head

        $ hg status

        ? src/a.o

        $ hg merge

        merging src/a.c and source/a.c to source/a.c

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

        (branch merge, don't forget to commit)

        $ hg status

        M source/a.c

        R src/a.c

        ? src/a.o

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				https://bz.mercurial-scm.org/612

				$ hg init
				$ mkdir src
				$ echo a > src/a.c
				$ hg ci -Ama
				adding src/a.c

				$ hg mv src source
				moving src/a.c to source/a.c (glob)

				$ hg ci -Ammove

				$ hg co -C 0
				1 files updated, 0 files merged, 1 files removed, 0 files unresolved

				$ echo new > src/a.c
				$ echo compiled > src/a.o
				$ hg ci -mupdate
				created new head

				$ hg status
				? src/a.o

				$ hg merge
				merging src/a.c and source/a.c to source/a.c
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ hg status
				M source/a.c
				R src/a.c
				? src/a.o