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strip: calculate list of extra nodes to save and pass it to changegroupsubset...
strip: calculate list of extra nodes to save and pass it to changegroupsubset When we remove revision N from the repository, all revisions >= N are affected: either it's a descendant from N and will also be removed, or it's not a descendant of N and will be renumbered. As a consequence, we have to (at least temporarily) remove all filelog and manifest revisions that have a linkrev >= N, readding some of them later. Unfortunately, it's possible to have a revlog with two revisions r1 and r2 such that r1 < r2, but linkrev(r1) > linkrev(r2). If we try to strip revision linkrev(r1) from the repository, we'll also lose revision r2 when we truncate this revlog. We already use changegroupsubset to create a temporary changegroup containing the revisions that have to be restored, but that function is unable to detect that we also wanted to save the r2 in the case above. So we manually calculate these extra nodes and pass it to changegroupsubset. This should fix issue764.
Alexis S. L. Carvalho - - Load All Authors

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r5909:f45f7390 default
r5909:f45f7390 default
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test-strip-cross.out
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crossed/.hg/store/00manifest.i
rev offset length base linkrev nodeid p1 p2
0 0 112 0 0 6f105cbb914d 000000000000 000000000000
1 112 123 0 1 8f3d04e263e5 000000000000 000000000000
2 235 122 0 2 f0ef8726ac4f 000000000000 000000000000
crossed/.hg/store/data/012.i
rev offset length base linkrev nodeid p1 p2
0 0 3 0 0 b8e02f643373 000000000000 000000000000
1 3 3 1 1 5d9299349fc0 000000000000 000000000000
2 6 3 2 2 2661d26c6496 000000000000 000000000000
crossed/.hg/store/data/021.i
rev offset length base linkrev nodeid p1 p2
0 0 3 0 0 b8e02f643373 000000000000 000000000000
1 3 3 1 2 5d9299349fc0 000000000000 000000000000
2 6 3 2 1 2661d26c6496 000000000000 000000000000
crossed/.hg/store/data/102.i
rev offset length base linkrev nodeid p1 p2
0 0 3 0 1 b8e02f643373 000000000000 000000000000
1 3 3 1 0 5d9299349fc0 000000000000 000000000000
2 6 3 2 2 2661d26c6496 000000000000 000000000000
crossed/.hg/store/data/120.i
rev offset length base linkrev nodeid p1 p2
0 0 3 0 1 b8e02f643373 000000000000 000000000000
1 3 3 1 2 5d9299349fc0 000000000000 000000000000
2 6 3 2 0 2661d26c6496 000000000000 000000000000
crossed/.hg/store/data/201.i
rev offset length base linkrev nodeid p1 p2
0 0 3 0 2 b8e02f643373 000000000000 000000000000
1 3 3 1 0 5d9299349fc0 000000000000 000000000000
2 6 3 2 1 2661d26c6496 000000000000 000000000000
crossed/.hg/store/data/210.i
rev offset length base linkrev nodeid p1 p2
0 0 3 0 2 b8e02f643373 000000000000 000000000000
1 3 3 1 1 5d9299349fc0 000000000000 000000000000
2 6 3 2 0 2661d26c6496 000000000000 000000000000
% Trying to strip revision 0
saving bundle to strip-backup/cbb8c2f0a2e3-backup
saving bundle to strip-backup/cbb8c2f0a2e3-temp
adding branch
adding changesets
adding manifests
adding file changes
added 2 changesets with 12 changes to 6 files (+1 heads)
% Verifying
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
6 files, 2 changesets, 12 total revisions
% Trying to strip revision 1
saving bundle to strip-backup/124ecc0cbec9-backup
saving bundle to strip-backup/124ecc0cbec9-temp
adding branch
adding changesets
adding manifests
adding file changes
added 1 changesets with 10 changes to 6 files (+1 heads)
% Verifying
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
6 files, 2 changesets, 12 total revisions
% Trying to strip revision 2
saving bundle to strip-backup/f6439b304a1a-backup
saving bundle to strip-backup/f6439b304a1a-temp
adding branch
adding changesets
adding manifests
adding file changes
added 0 changesets with 6 changes to 4 files
% Verifying
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
6 files, 2 changesets, 12 total revisions