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copies: add config option for writing copy metadata to file and/or changset...

copies: add config option for writing copy metadata to file and/or changset This introduces a config option that lets you choose to write copy metadata to the changeset extras instead of to filelog. There's also an option to write it to both places. I imagine that may possibly be useful when transitioning an existing repo. The copy metadata is stored as two fields in extras: one for copies since p1 and one for copies since p2. I may need to add more information later in order to make copy tracing faster. Specifically, I'm thinking out recording which files were added or removed so that copies._chaincopies() doesn't have to look at the manifest for that. But that would just be an optimization and that can be added once we know if it's necessary. I have also considered saving space by using replacing the destination file path by an index into the "files" list, but that can also be changed later (but before the feature is ready to release). Differential Revision: https://phab.mercurial-scm.org/D6183

Martin von Zweigbergk - - Load All Authors

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      Test for changeset 9fe267f77f56ff127cf7e65dc15dd9de71ce8ceb

      (merge correctly when all the files in a directory are moved

      but then local changes are added in the same directory)

        $ hg init a

        $ cd a

        $ mkdir -p testdir

        $ echo a > testdir/a

        $ hg add testdir/a

        $ hg commit -m a

        $ cd ..

        $ hg clone a b

        updating to branch default

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

        $ cd a

        $ echo alpha > testdir/a

        $ hg commit -m remote-change

        $ cd ..

        $ cd b

        $ mkdir testdir/subdir

        $ hg mv testdir/a testdir/subdir/a

        $ hg commit -m move

        $ mkdir newdir

        $ echo beta > newdir/beta

        $ hg add newdir/beta

        $ hg commit -m local-addition

        $ hg pull ../a

        pulling from ../a

        searching for changes

        adding changesets

        adding manifests

        adding file changes

        added 1 changesets with 1 changes to 1 files (+1 heads)

        new changesets cc7000b01af9

        (run 'hg heads' to see heads, 'hg merge' to merge)

        $ hg up -C 2

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

      Abuse this test for also testing that merge respects ui.relative-paths

        $ hg --cwd testdir merge --config ui.relative-paths=yes

        merging subdir/a and a to subdir/a

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

        (branch merge, don't forget to commit)

        $ hg stat

        M testdir/subdir/a

        $ hg diff --nodates

        diff -r bc21c9773bfa testdir/subdir/a

        --- a/testdir/subdir/a

        +++ b/testdir/subdir/a

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

        -a

        +alpha

        $ cd ..

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				Test for changeset 9fe267f77f56ff127cf7e65dc15dd9de71ce8ceb
				(merge correctly when all the files in a directory are moved
				but then local changes are added in the same directory)

				$ hg init a
				$ cd a
				$ mkdir -p testdir
				$ echo a > testdir/a
				$ hg add testdir/a
				$ hg commit -m a
				$ cd ..

				$ hg clone a b
				updating to branch default
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ cd a
				$ echo alpha > testdir/a
				$ hg commit -m remote-change
				$ cd ..

				$ cd b
				$ mkdir testdir/subdir
				$ hg mv testdir/a testdir/subdir/a
				$ hg commit -m move
				$ mkdir newdir
				$ echo beta > newdir/beta
				$ hg add newdir/beta
				$ hg commit -m local-addition
				$ hg pull ../a
				pulling from ../a
				searching for changes
				adding changesets
				adding manifests
				adding file changes
				added 1 changesets with 1 changes to 1 files (+1 heads)
				new changesets cc7000b01af9
				(run 'hg heads' to see heads, 'hg merge' to merge)
				$ hg up -C 2
				0 files updated, 0 files merged, 0 files removed, 0 files unresolved
				Abuse this test for also testing that merge respects ui.relative-paths
				$ hg --cwd testdir merge --config ui.relative-paths=yes
				merging subdir/a and a to subdir/a
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)
				$ hg stat
				M testdir/subdir/a
				$ hg diff --nodates
				diff -r bc21c9773bfa testdir/subdir/a
				--- a/testdir/subdir/a
				+++ b/testdir/subdir/a
				@@ -1,1 +1,1 @@
				-a
				+alpha

				$ cd ..