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view tests/test-rename-merge1.t @ 30580:51e7c83e05ee
rebase: calculate ancestors for --base separately (issue5420)
Previously, the --base option only works with a single "branch" - if there
is one changeset in the "--base" revset whose branching point(s) is/are
different from another changeset in the "--base" revset, "rebase" will error
out with:
abort: source is ancestor of destination
This happens if the user has multiple draft branches, and uses "hg rebase -b
'draft()' -d master", for example. The error message looks cryptic to users
who don't know the implementation detail.
This patch changes the logic to calculate the common ancestor for every
"base" changeset separately so we won't (incorrectly) select "source" which
is an ancestor of the destination.
This patch should not change the behavior where all changesets specified by
"--base" have the same branching point(s).
A new situation is: some of the specified changesets could be rebased, while
some couldn't (because they are descendants of the destination, or they do
not share a common ancestor with the destination). The current behavior is
to show "nothing to rebase" and exits with 1.
This patch maintains the current behavior (show "nothing to rebase") even if
part of the "--base" revset could be rebased. A clearer error message may be
"cannot find branching point for X", or "X is a descendant of destination".
The error message issue is tracked by issue5422 separately.
A test is added with all kinds of tricky cases I could think of for now.
author | Jun Wu <quark@fb.com> |
---|---|
date | Mon, 28 Nov 2016 05:45:22 +0000 |
parents | 296d55def9c4 |
children | 009d0283de5f |
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$ hg init $ echo "[merge]" >> .hg/hgrc $ echo "followcopies = 1" >> .hg/hgrc $ echo foo > a $ echo foo > a2 $ hg add a a2 $ hg ci -m "start" $ hg mv a b $ hg mv a2 b2 $ hg ci -m "rename" $ hg co 0 2 files updated, 0 files merged, 2 files removed, 0 files unresolved $ echo blahblah > a $ echo blahblah > a2 $ hg mv a2 c2 $ hg ci -m "modify" created new head $ hg merge -y --debug searching for copies back to rev 1 unmatched files in local: c2 unmatched files in other: b b2 all copies found (* = to merge, ! = divergent, % = renamed and deleted): src: 'a' -> dst: 'b' * src: 'a2' -> dst: 'b2' ! src: 'a2' -> dst: 'c2' ! checking for directory renames resolving manifests branchmerge: True, force: False, partial: False ancestor: af1939970a1c, local: 044f8520aeeb+, remote: 85c198ef2f6c note: possible conflict - a2 was renamed multiple times to: c2 b2 preserving a for resolve of b removing a b2: remote created -> g getting b2 b: remote moved from a -> m (premerge) picked tool ':merge' for b (binary False symlink False changedelete False) merging a and b to b my b@044f8520aeeb+ other b@85c198ef2f6c ancestor a@af1939970a1c premerge successful 1 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg status -AC M b a M b2 R a C c2 $ cat b blahblah $ hg ci -m "merge" $ hg debugindex b rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 67 ..... 1 57eacc201a7f 000000000000 000000000000 (re) 1 67 72 ..... 3 4727ba907962 000000000000 57eacc201a7f (re) $ hg debugrename b b renamed from a:dd03b83622e78778b403775d0d074b9ac7387a66 This used to trigger a "divergent renames" warning, despite no renames $ hg cp b b3 $ hg cp b b4 $ hg ci -A -m 'copy b twice' $ hg up eb92d88a9712 0 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg up 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg rm b3 b4 $ hg ci -m 'clean up a bit of our mess' We'd rather not warn on divergent renames done in the same changeset (issue2113) $ hg cp b b3 $ hg mv b b4 $ hg ci -A -m 'divergent renames in same changeset' $ hg up c761c6948de0 1 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg up 2 files updated, 0 files merged, 1 files removed, 0 files unresolved Check for issue2642 $ hg init t $ cd t $ echo c0 > f1 $ hg ci -Aqm0 $ hg up null -q $ echo c1 > f1 # backport $ hg ci -Aqm1 $ hg mv f1 f2 $ hg ci -qm2 $ hg up 0 -q $ hg merge 1 -q --tool internal:local $ hg ci -qm3 $ hg merge 2 merging f1 and f2 to f2 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat f2 c0 $ cd .. Check for issue2089 $ hg init repo2089 $ cd repo2089 $ echo c0 > f1 $ hg ci -Aqm0 $ hg up null -q $ echo c1 > f1 $ hg ci -Aqm1 $ hg up 0 -q $ hg merge 1 -q --tool internal:local $ echo c2 > f1 $ hg ci -qm2 $ hg up 1 -q $ hg mv f1 f2 $ hg ci -Aqm3 $ hg up 2 -q $ hg merge 3 merging f1 and f2 to f2 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat f2 c2 $ cd .. Check for issue3074 $ hg init repo3074 $ cd repo3074 $ echo foo > file $ hg add file $ hg commit -m "added file" $ hg mv file newfile $ hg commit -m "renamed file" $ hg update 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg rm file $ hg commit -m "deleted file" created new head $ hg merge --debug searching for copies back to rev 1 unmatched files in other: newfile all copies found (* = to merge, ! = divergent, % = renamed and deleted): src: 'file' -> dst: 'newfile' % checking for directory renames resolving manifests branchmerge: True, force: False, partial: False ancestor: 19d7f95df299, local: 0084274f6b67+, remote: 5d32493049f0 note: possible conflict - file was deleted and renamed to: newfile newfile: remote created -> g getting newfile 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg status M newfile $ cd ..