--- a/tests/test-copies-chain-merge.t Fri Feb 19 20:47:15 2021 +0100
+++ b/tests/test-copies-chain-merge.t Fri Feb 19 20:46:33 2021 +0100
@@ -422,6 +422,49 @@
o i-0 initial commit: a b h
+Subcase: new copy information on both side with an actual merge happening
+`````````````````````````````````````````````````````````````````````````
+
+- the "p-" branch renaming 't' to 'v' (through 'u')
+- the "q-" branch renaming 'r' to 'v' (through 'w')
+
+ $ case_desc="merge with copies info on both side - P side: rename t to v, Q side: r to v, (different content)"
+
+ $ hg up 'desc("p-2")'
+ 3 files updated, 0 files merged, 2 files removed, 0 files unresolved
+ $ hg merge 'desc("q-2")' --tool ':union'
+ merging v
+ 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
+ (branch merge, don't forget to commit)
+ $ hg ci -m "mPQm-0 $case_desc - one way"
+ $ hg up 'desc("q-2")'
+ 2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+ $ hg merge 'desc("p-2")' --tool ':union'
+ merging v
+ 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
+ (branch merge, don't forget to commit)
+ $ hg ci -m "mQPm-0 $case_desc - the other way"
+ created new head
+ $ hg log -G --rev '::(desc("mAEm")+desc("mEAm"))'
+ o mEAm-0 merge with copies info on both side - A side: rename d to f, E side: b to f, (same content for f) - the other way
+ |\
+ +---o mAEm-0 merge with copies info on both side - A side: rename d to f, E side: b to f, (same content for f) - one way
+ | |/
+ | o e-2 g -move-> f
+ | |
+ | o e-1 b -move-> g
+ | |
+ o | a-2: e -move-> f
+ | |
+ o | a-1: d -move-> e
+ |/
+ o i-2: c -move-> d, s -move-> t
+ |
+ o i-1: a -move-> c, p -move-> s
+ |
+ o i-0 initial commit: a b h
+
+
Subcase: existing copy information overwritten on one branch
````````````````````````````````````````````````````````````
@@ -459,8 +502,9 @@
(branch merge, don't forget to commit)
$ hg ci -m "mFBm-0 $case_desc - the other way"
created new head
+ $ hg up null --quiet
$ hg log -G --rev '::(desc("mBFm")+desc("mFBm"))'
- @ mFBm-0 simple merge - B side: unrelated change, F side: overwrite d with a copy (from h->i->d) - the other way
+ o mFBm-0 simple merge - B side: unrelated change, F side: overwrite d with a copy (from h->i->d) - the other way
|\
+---o mBFm-0 simple merge - B side: unrelated change, F side: overwrite d with a copy (from h->i->d) - one way
| |/
@@ -491,8 +535,7 @@
$ case_desc="actual content merge, copies on one side - D side: delete and re-add (different content), G side: update content"
$ hg up 'desc("i-2")'
- 3 files updated, 0 files merged, 0 files removed, 0 files unresolved (no-changeset !)
- 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (changeset !)
+ 6 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo "some update" >> d
$ hg commit -m "g-1: update d"
created new head
@@ -1229,6 +1272,8 @@
mL,CB+revertm: chained merges (salvaged -> simple) - same content (when the file exists)
mN,GFm: chained merges (copy-overwrite -> simple) - same content
mO,FGm: chained merges (copy-overwrite -> simple) - same content
+ mPQm-0 merge with copies info on both side - P side: rename t to v, Q side: r to v, (different content) - one way
+ mQPm-0 merge with copies info on both side - P side: rename t to v, Q side: r to v, (different content) - the other way
n-1: unrelated changes (based on the "f" series of changes)
o-1: unrelated changes (based on "g" changes)
p-1: t -move-> u
@@ -1433,6 +1478,16 @@
entry-0014 size 14
'\x00\x00\x00\x01\x08\x00\x00\x00\x01\x00\x00\x00\x00f'
merged : f, ;
+ ##### revision "mPQm-0 merge with copies info on both side - P side" #####
+ 1 sidedata entries
+ entry-0014 size 14
+ '\x00\x00\x00\x01\x08\x00\x00\x00\x01\x00\x00\x00\x00v'
+ merged : v, ;
+ ##### revision "mQPm-0 merge with copies info on both side - P side" #####
+ 1 sidedata entries
+ entry-0014 size 14
+ '\x00\x00\x00\x01\x08\x00\x00\x00\x01\x00\x00\x00\x00v'
+ merged : v, ;
##### revision "f-1" #####
1 sidedata entries
entry-0014 size 24
@@ -2364,6 +2419,134 @@
~
#endif
+Subcase: new copy information on both side with an actual merge happening
+`````````````````````````````````````````````````````````````````````````
+
+- the "p-" branch renaming 't' to 'v' (through 'u')
+- the "q-" branch renaming 'r' to 'v' (through 'w')
+
+
+ $ hg log -G --rev '::(desc("mPQm")+desc("mQPm"))'
+ o mQPm-0 merge with copies info on both side - P side: rename t to v, Q side: r to v, (different content) - the other way
+ |\
+ +---o mPQm-0 merge with copies info on both side - P side: rename t to v, Q side: r to v, (different content) - one way
+ | |/
+ | o q-2 w -move-> v
+ | |
+ | o q-1 r -move-> w
+ | |
+ o | p-2: u -move-> v
+ | |
+ o | p-1: t -move-> u
+ |/
+ o i-2: c -move-> d, s -move-> t
+ |
+ o i-1: a -move-> c, p -move-> s
+ |
+ o i-0 initial commit: a b h
+
+
+#if no-changeset
+ $ hg manifest --debug --rev 'desc("mPQm-0")' | grep '644 v'
+ 0946c662ef16e4e67397fd717389eb6693d41749 644 v
+ $ hg manifest --debug --rev 'desc("mQPm-0")' | grep '644 v'
+ 0db3aad7fcc1ec27fab57060e327b9e864ea0cc9 644 v
+ $ hg manifest --debug --rev 'desc("p-2")' | grep '644 v'
+ 3f91841cd75cadc9a1f1b4e7c1aa6d411f76032e 644 v
+ $ hg manifest --debug --rev 'desc("q-2")' | grep '644 v'
+ c43c088b811fd27983c0a9aadf44f3343cd4cd7e 644 v
+ $ hg debugindex v | ../no-linkrev
+ rev linkrev nodeid p1 p2
+ 0 * 3f91841cd75c 000000000000 000000000000
+ 1 * c43c088b811f 000000000000 000000000000
+ 2 * 0946c662ef16 3f91841cd75c c43c088b811f
+ 3 * 0db3aad7fcc1 c43c088b811f 3f91841cd75c
+#else
+ $ hg manifest --debug --rev 'desc("mPQm-0")' | grep '644 v'
+ 65fde9f6e4d4da23b3f610e07b53673ea9541d75 644 v
+ $ hg manifest --debug --rev 'desc("mQPm-0")' | grep '644 v'
+ a098dda6413aecf154eefc976afc38b295acb7e5 644 v
+ $ hg manifest --debug --rev 'desc("p-2")' | grep '644 v'
+ 5aed6a8dbff0301328c08360d24354d3d064cf0d 644 v
+ $ hg manifest --debug --rev 'desc("q-2")' | grep '644 v'
+ a38b2fa170219750dac9bc7d19df831f213ba708 644 v
+ $ hg debugindex v | ../no-linkrev
+ rev linkrev nodeid p1 p2
+ 0 * 5aed6a8dbff0 000000000000 000000000000
+ 1 * a38b2fa17021 000000000000 000000000000
+ 2 * 65fde9f6e4d4 5aed6a8dbff0 a38b2fa17021
+ 3 * a098dda6413a a38b2fa17021 5aed6a8dbff0
+#endif
+
+# Here the filelog based implementation is not looking at the rename
+# information (because the file exist on both side). However the changelog
+# based on works fine. We have different output.
+
+ $ hg status --copies --rev 'desc("p-2")' --rev 'desc("mPQm-0")'
+ M v
+ r (no-filelog !)
+ R r
+ $ hg status --copies --rev 'desc("p-2")' --rev 'desc("mQPm-0")'
+ M v
+ r (no-filelog !)
+ R r
+ $ hg status --copies --rev 'desc("q-2")' --rev 'desc("mPQm-0")'
+ M v
+ t (no-filelog !)
+ R t
+ $ hg status --copies --rev 'desc("q-2")' --rev 'desc("mQPm-0")'
+ M v
+ t (no-filelog !)
+ R t
+ $ hg status --copies --rev 'desc("i-2")' --rev 'desc("p-2")'
+ A v
+ t
+ R t
+ $ hg status --copies --rev 'desc("i-2")' --rev 'desc("q-2")'
+ A v
+ r
+ R r
+
+# From here, we run status against revision where both source file exists.
+#
+# The filelog based implementation picks an arbitrary side based on revision
+# numbers. So the same side "wins" whatever the parents order is. This is
+# sub-optimal because depending on revision numbers means the result can be
+# different from one repository to the next.
+#
+# The changeset based algorithm use the parent order to break tie on conflicting
+# information and will have a different order depending on who is p1 and p2.
+# That order is stable accross repositories. (data from p1 prevails)
+
+ $ hg status --copies --rev 'desc("i-2")' --rev 'desc("mPQm-0")'
+ A v
+ t
+ R r
+ R t
+ $ hg status --copies --rev 'desc("i-2")' --rev 'desc("mQPm-0")'
+ A v
+ t (filelog !)
+ r (no-filelog !)
+ R r
+ R t
+ $ hg status --copies --rev 'desc("i-0")' --rev 'desc("mPQm-0")'
+ A d
+ a
+ A v
+ r (filelog !)
+ p (no-filelog !)
+ R a
+ R p
+ R r
+ $ hg status --copies --rev 'desc("i-0")' --rev 'desc("mQPm-0")'
+ A d
+ a
+ A v
+ r
+ R a
+ R p
+ R r
+
Comparing with merging with a deletion (and keeping the file)
-------------------------------------------------------------