upstream/mercurial-mirror Files · tests/test-merge-commit.t

show: use consistent (and possibly shorter) node lengths...

show: use consistent (and possibly shorter) node lengths `hg show` makes heavy use of shortest() to limit the length of the node hash. For the "stack" and "work" views, you are often looking at multiple lines of similar output for "lines" of work. It is visually appeasing for things to vertically align. A naive use of {shortest(node, N)} could result in variable length nodes and for the first character of the description to vary by a column or two. We implement a function to determine the longest shortest prefix for a set of revisions. The new function is used to determine the printed node length for all `hg show` views. .. feature:: show: use consistent node length in views Our previous shortest node length of 5 was arbitrarily chosen. shortest() already does the work of ensuring that a partial node isn't ambiguous with an integer revision, which is our primary risk of a collision for very short nodes. It should be safe to go with the shortest node possible. Existing code is also optimized to handle nodes as short as 4. So, we decrease the minimum hash length from 5 to 4. We also add a test demonstrating that prefix collisions increase the node length. .. feature:: show: decrease minimum displayed hash length from 5 to 4 Differential Revision: https://phab.mercurial-scm.org/D558

Matt Harbison - - Load All Authors

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      Check that renames are correctly saved by a commit after a merge

      Test with the merge on 3 having the rename on the local parent

        $ hg init a

        $ cd a

        $ echo line1 > foo

        $ hg add foo

        $ hg ci -m '0: add foo'

        $ echo line2 >> foo

        $ hg ci -m '1: change foo'

        $ hg up -C 0

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

        $ hg mv foo bar

        $ rm bar

        $ echo line0 > bar

        $ echo line1 >> bar

        $ hg ci -m '2: mv foo bar; change bar'

        created new head

        $ hg merge 1

        merging bar and foo to bar

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

        (branch merge, don't forget to commit)

        $ cat bar

        line0

        line1

        line2

        $ hg ci -m '3: merge with local rename'

        $ hg debugindex bar

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0      77  .....       2 d35118874825 000000000000 000000000000 (re)

             1        77      76  .....       3 5345f5ab8abd 000000000000 d35118874825 (re)

        $ hg debugrename bar

        bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

        $ hg debugindex foo

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       7  .....       0 690b295714ae 000000000000 000000000000 (re)

             1         7      13  .....       1 9e25c27b8757 690b295714ae 000000000000 (re)

      Revert the content change from rev 2:

        $ hg up -C 2

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

        $ rm bar

        $ echo line1 > bar

        $ hg ci -m '4: revert content change from rev 2'

        created new head

        $ hg log --template '{rev}:{node|short} {parents}\n'

        4:2263c1be0967 2:0f2ff26688b9 

        3:0555950ead28 2:0f2ff26688b9 1:5cd961e4045d 

        2:0f2ff26688b9 0:2665aaee66e9 

        1:5cd961e4045d 

        0:2665aaee66e9 

      This should use bar@rev2 as the ancestor:

        $ hg --debug merge 3

          searching for copies back to rev 1

        resolving manifests

         branchmerge: True, force: False, partial: False

         ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 0555950ead28

         preserving bar for resolve of bar

        starting 4 threads for background file closing (?)

         bar: versions differ -> m (premerge)

        picked tool ':merge' for bar (binary False symlink False changedelete False)

        merging bar

        my bar@2263c1be0967+ other bar@0555950ead28 ancestor bar@0f2ff26688b9

         premerge successful

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

        (branch merge, don't forget to commit)

        $ cat bar

        line1

        line2

        $ hg ci -m '5: merge'

        $ hg debugindex bar

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0      77  .....       2 d35118874825 000000000000 000000000000 (re)

             1        77      76  .....       3 5345f5ab8abd 000000000000 d35118874825 (re)

             2       153       7  .....       4 ff4b45017382 d35118874825 000000000000 (re)

             3       160      13  .....       5 3701b4893544 ff4b45017382 5345f5ab8abd (re)

      Same thing, but with the merge on 3 having the rename

      on the remote parent:

        $ cd ..

        $ hg clone -U -r 1 -r 2 a b

        adding changesets

        adding manifests

        adding file changes

        added 3 changesets with 3 changes to 2 files (+1 heads)

        $ cd b

        $ hg up -C 1

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

        $ hg merge 2

        merging foo and bar to bar

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

        (branch merge, don't forget to commit)

        $ cat bar

        line0

        line1

        line2

        $ hg ci -m '3: merge with remote rename'

        $ hg debugindex bar

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0      77  .....       2 d35118874825 000000000000 000000000000 (re)

             1        77      76  .....       3 5345f5ab8abd 000000000000 d35118874825 (re)

        $ hg debugrename bar

        bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

        $ hg debugindex foo

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       7  .....       0 690b295714ae 000000000000 000000000000 (re)

             1         7      13  .....       1 9e25c27b8757 690b295714ae 000000000000 (re)

      Revert the content change from rev 2:

        $ hg up -C 2

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

        $ rm bar

        $ echo line1 > bar

        $ hg ci -m '4: revert content change from rev 2'

        created new head

        $ hg log --template '{rev}:{node|short} {parents}\n'

        4:2263c1be0967 2:0f2ff26688b9 

        3:3ffa6b9e35f0 1:5cd961e4045d 2:0f2ff26688b9 

        2:0f2ff26688b9 0:2665aaee66e9 

        1:5cd961e4045d 

        0:2665aaee66e9 

      This should use bar@rev2 as the ancestor:

        $ hg --debug merge 3

          searching for copies back to rev 1

        resolving manifests

         branchmerge: True, force: False, partial: False

         ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 3ffa6b9e35f0

         preserving bar for resolve of bar

        starting 4 threads for background file closing (?)

         bar: versions differ -> m (premerge)

        picked tool ':merge' for bar (binary False symlink False changedelete False)

        merging bar

        my bar@2263c1be0967+ other bar@3ffa6b9e35f0 ancestor bar@0f2ff26688b9

         premerge successful

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

        (branch merge, don't forget to commit)

        $ cat bar

        line1

        line2

        $ hg ci -m '5: merge'

        $ hg debugindex bar

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0      77  .....       2 d35118874825 000000000000 000000000000 (re)

             1        77      76  .....       3 5345f5ab8abd 000000000000 d35118874825 (re)

             2       153       7  .....       4 ff4b45017382 d35118874825 000000000000 (re)

             3       160      13  .....       5 3701b4893544 ff4b45017382 5345f5ab8abd (re)

        $ cd ..

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				Check that renames are correctly saved by a commit after a merge

				Test with the merge on 3 having the rename on the local parent

				$ hg init a
				$ cd a

				$ echo line1 > foo
				$ hg add foo
				$ hg ci -m '0: add foo'

				$ echo line2 >> foo
				$ hg ci -m '1: change foo'

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

				$ hg mv foo bar
				$ rm bar
				$ echo line0 > bar
				$ echo line1 >> bar
				$ hg ci -m '2: mv foo bar; change bar'
				created new head

				$ hg merge 1
				merging bar and foo to bar
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line0
				line1
				line2

				$ hg ci -m '3: merge with local rename'

				$ hg debugindex bar
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re)
				1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re)

				$ hg debugrename bar
				bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

				$ hg debugindex foo
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 7 ..... 0 690b295714ae 000000000000 000000000000 (re)
				1 7 13 ..... 1 9e25c27b8757 690b295714ae 000000000000 (re)


				Revert the content change from rev 2:

				$ hg up -C 2
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ rm bar
				$ echo line1 > bar
				$ hg ci -m '4: revert content change from rev 2'
				created new head

				$ hg log --template '{rev}:{node\|short} {parents}\n'
				4:2263c1be0967 2:0f2ff26688b9
				3:0555950ead28 2:0f2ff26688b9 1:5cd961e4045d
				2:0f2ff26688b9 0:2665aaee66e9
				1:5cd961e4045d
				0:2665aaee66e9

				This should use bar@rev2 as the ancestor:

				$ hg --debug merge 3
				searching for copies back to rev 1
				resolving manifests
				branchmerge: True, force: False, partial: False
				ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 0555950ead28
				preserving bar for resolve of bar
				starting 4 threads for background file closing (?)
				bar: versions differ -> m (premerge)
				picked tool ':merge' for bar (binary False symlink False changedelete False)
				merging bar
				my bar@2263c1be0967+ other bar@0555950ead28 ancestor bar@0f2ff26688b9
				premerge successful
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line1
				line2

				$ hg ci -m '5: merge'

				$ hg debugindex bar
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re)
				1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re)
				2 153 7 ..... 4 ff4b45017382 d35118874825 000000000000 (re)
				3 160 13 ..... 5 3701b4893544 ff4b45017382 5345f5ab8abd (re)


				Same thing, but with the merge on 3 having the rename
				on the remote parent:

				$ cd ..
				$ hg clone -U -r 1 -r 2 a b
				adding changesets
				adding manifests
				adding file changes
				added 3 changesets with 3 changes to 2 files (+1 heads)
				$ cd b

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

				$ hg merge 2
				merging foo and bar to bar
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line0
				line1
				line2

				$ hg ci -m '3: merge with remote rename'

				$ hg debugindex bar
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re)
				1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re)

				$ hg debugrename bar
				bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

				$ hg debugindex foo
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 7 ..... 0 690b295714ae 000000000000 000000000000 (re)
				1 7 13 ..... 1 9e25c27b8757 690b295714ae 000000000000 (re)


				Revert the content change from rev 2:

				$ hg up -C 2
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ rm bar
				$ echo line1 > bar
				$ hg ci -m '4: revert content change from rev 2'
				created new head

				$ hg log --template '{rev}:{node\|short} {parents}\n'
				4:2263c1be0967 2:0f2ff26688b9
				3:3ffa6b9e35f0 1:5cd961e4045d 2:0f2ff26688b9
				2:0f2ff26688b9 0:2665aaee66e9
				1:5cd961e4045d
				0:2665aaee66e9

				This should use bar@rev2 as the ancestor:

				$ hg --debug merge 3
				searching for copies back to rev 1
				resolving manifests
				branchmerge: True, force: False, partial: False
				ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 3ffa6b9e35f0
				preserving bar for resolve of bar
				starting 4 threads for background file closing (?)
				bar: versions differ -> m (premerge)
				picked tool ':merge' for bar (binary False symlink False changedelete False)
				merging bar
				my bar@2263c1be0967+ other bar@3ffa6b9e35f0 ancestor bar@0f2ff26688b9
				premerge successful
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line1
				line2

				$ hg ci -m '5: merge'

				$ hg debugindex bar
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re)
				1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re)
				2 153 7 ..... 4 ff4b45017382 d35118874825 000000000000 (re)
				3 160 13 ..... 5 3701b4893544 ff4b45017382 5345f5ab8abd (re)

				$ cd ..