bundle: emit full snapshot as is, without doing a redelta
With the new `forced` delta-reused policy, it become important to be able to
send full snapshot where full snapshot are needed. Otherwise, the fallback delta
will simply be used on the client side… creating monstrous delta chain, since
revision that are meant as a reset of delta-chain chain becoming too complex are
simply adding a new full delta-tree on the leaf of another one.
In the `non-forced` cases, client process full snapshot from the bundle
differently from deltas, so client will still try to convert the full snapshot
into a delta if possible. So this will no lead to pathological storage
explosion.
I have considered making this configurable, but the impact seems limited enough
that it does not seems to be worth it. Especially with the current
sparse-revlog format that use "delta-tree" with multiple level snapshots, full
snapshot are much less frequent and not that different from other intermediate
snapshot that we are already sending over the wire anyway.
CPU wise, this will help the bundling side a little as it will not need to
reconstruct revisions and compute deltas. The unbundling side might save a tiny
amount of CPU as it won't need to reconstruct the delta-base to reconstruct the
revision full text. This only slightly visible in some of the benchmarks. And
have no real impact on most of them.
### data-env-vars.name = pypy-2018-08-01-zstd-sparse-revlog
# benchmark.name = perf-bundle
# benchmark.variants.revs = last-40000
before: 11.467186 seconds
just-emit-full: 11.190576 seconds (-2.41%)
with-pull-force: 11.041091 seconds (-3.72%)
# benchmark.name = perf-unbundle
# benchmark.variants.revs = last-40000
before: 16.744862
just-emit-full:: 16.561036 seconds (-1.10%)
with-pull-force: 16.389344 seconds (-2.12%)
# benchmark.name = pull
# benchmark.variants.revs = last-40000
before: 26.870569
just-emit-full: 26.391188 seconds (-1.78%)
with-pull-force: 25.633184 seconds (-4.60%)
Space wise (so network-wise) the impact is fairly small. When taking compression into
account.
Below are tests the size of `hg bundle --all` for a handful of benchmark repositories
(with bzip, zstd compression and without it)
This show a small increase in the bundle size, but nothing really significant
except maybe for mozilla-try (+12%) that nobody really pulls large chunk of anyway.
Mozilla-try is also the repository that benefit the most for not having to
recompute deltas client size.
### mercurial:
bzip-before: 26 406 342 bytes
bzip-after: 26 691 543 bytes +1.08%
zstd-before: 27 918 645 bytes
zstd-after: 28 075 896 bytes +0.56%
none-before: 98 675 601 bytes
none-after: 100 411 237 bytes +1.76%
### pypy
bzip-before: 201 295 752 bytes
bzip-after: 209 780 282 bytes +4.21%
zstd-before: 202 974 795 bytes
zstd-after: 205 165 780 bytes +1.08%
none-before: 871 070 261 bytes
none-after: 993 595 057 bytes +14.07%
### netbeans
bzip-before: 601 314 330 bytes
bzip-after: 614 246 241 bytes +2.15%
zstd-before: 604 745 136 bytes
zstd-after: 615 497 705 bytes +1.78%
none-before: 3 338 238 571 bytes
none-after: 3 439 422 535 bytes +3.03%
### mozilla-central
bzip-before: 1 493 006 921 bytes
bzip-after: 1 549 650 570 bytes +3.79%
zstd-before: 1 481 910 102 bytes
zstd-after: 1 513 052 415 bytes +2.10%
none-before: 6 535 929 910 bytes
none-after: 7 010 191 342 bytes +7.26%
### mozilla-try
bzip-before: 6 583 425 999 bytes
bzip-after: 7 423 536 928 bytes +12.76%
zstd-before: 6 021 009 212 bytes
zstd-after: 6 674 922 420 bytes +10.86%
none-before: 22 954 739 558 bytes
none-after: 26 013 854 771 bytes +13.32%
#testcases old newfilenode
#if newfilenode
Enable the config option
------------------------
$ cat >> $HGRCPATH <<EOF
> [experimental]
> merge-track-salvaged = True
> EOF
#endif
Criss cross merging
$ hg init criss-cross
$ cd criss-cross
$ echo '0 base' > f1
$ echo '0 base' > f2
$ hg ci -Aqm '0 base'
$ echo '1 first change' > f1
$ hg ci -m '1 first change f1'
$ hg up -qr0
$ echo '2 first change' > f2
$ hg ci -qm '2 first change f2'
$ hg merge -qr 1
$ hg ci -m '3 merge'
$ hg up -qr2
$ hg merge -qr1
$ hg ci -qm '4 merge'
$ echo '5 second change' > f1
$ hg ci -m '5 second change f1'
$ hg up -r3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo '6 second change' > f2
$ hg ci -m '6 second change f2'
$ hg log -G
@ changeset: 6:3b08d01b0ab5
| tag: tip
| parent: 3:cf89f02107e5
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: 6 second change f2
|
| o changeset: 5:adfe50279922
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: 5 second change f1
| |
| o changeset: 4:7d3e55501ae6
| |\ parent: 2:40663881a6dd
| | | parent: 1:0f6b37dbe527
| | | user: test
| | | date: Thu Jan 01 00:00:00 1970 +0000
| | | summary: 4 merge
| | |
o---+ changeset: 3:cf89f02107e5
| | | parent: 2:40663881a6dd
|/ / parent: 1:0f6b37dbe527
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: 3 merge
| |
| o changeset: 2:40663881a6dd
| | parent: 0:40494bf2444c
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: 2 first change f2
| |
o | changeset: 1:0f6b37dbe527
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: 1 first change f1
|
o changeset: 0:40494bf2444c
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0 base
$ hg merge -v --debug --tool internal:dump 5 --config merge.preferancestor='!'
note: using 0f6b37dbe527 as ancestor of 3b08d01b0ab5 and adfe50279922
alternatively, use --config merge.preferancestor=40663881a6dd
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f6b37dbe527, local: 3b08d01b0ab5+, remote: adfe50279922
f1: remote is newer -> g
getting f1
preserving f2 for resolve of f2
f2: versions differ -> m
picked tool ':dump' for f2 (binary False symlink False changedelete False)
merging f2
my f2@3b08d01b0ab5+ other f2@adfe50279922 ancestor f2@0f6b37dbe527
1 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ f --dump *
f1:
>>>
5 second change
<<<
f2:
>>>
6 second change
<<<
f2.base:
>>>
0 base
<<<
f2.local:
>>>
6 second change
<<<
f2.orig:
>>>
6 second change
<<<
f2.other:
>>>
2 first change
<<<
$ hg up -qC .
$ hg merge -v --tool internal:dump 5 --config merge.preferancestor="null 40663881 3b08d"
note: using 40663881a6dd as ancestor of 3b08d01b0ab5 and adfe50279922
alternatively, use --config merge.preferancestor=0f6b37dbe527
resolving manifests
merging f1
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
Redo merge with merge.preferancestor="*" to enable bid merge
$ rm f*
$ hg up -qC .
$ hg merge -v --debug --tool internal:dump 5 --config merge.preferancestor="*"
note: merging 3b08d01b0ab5+ and adfe50279922 using bids from ancestors 0f6b37dbe527 and 40663881a6dd
calculating bids for ancestor 0f6b37dbe527
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f6b37dbe527, local: 3b08d01b0ab5+, remote: adfe50279922
f1: remote is newer -> g
f2: versions differ -> m
calculating bids for ancestor 40663881a6dd
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 40663881a6dd, local: 3b08d01b0ab5+, remote: adfe50279922
f1: versions differ -> m
f2: remote unchanged -> k
auction for merging merge bids (2 ancestors)
list of bids for f1:
remote is newer -> g
versions differ -> m
f1: picking 'get' action
list of bids for f2:
remote unchanged -> k
versions differ -> m
f2: picking 'keep' action
end of auction
f1: remote is newer -> g
getting f1
f2: remote unchanged -> k
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ f --dump *
f1:
>>>
5 second change
<<<
f2:
>>>
6 second change
<<<
The other way around:
$ hg up -C -r5
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge -v --debug --config merge.preferancestor="*"
note: merging adfe50279922+ and 3b08d01b0ab5 using bids from ancestors 0f6b37dbe527 and 40663881a6dd
calculating bids for ancestor 0f6b37dbe527
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f6b37dbe527, local: adfe50279922+, remote: 3b08d01b0ab5
f1: remote unchanged -> k
f2: versions differ -> m
calculating bids for ancestor 40663881a6dd
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 40663881a6dd, local: adfe50279922+, remote: 3b08d01b0ab5
f1: versions differ -> m
f2: remote is newer -> g
auction for merging merge bids (2 ancestors)
list of bids for f1:
remote unchanged -> k
versions differ -> m
f1: picking 'keep' action
list of bids for f2:
remote is newer -> g
versions differ -> m
f2: picking 'get' action
end of auction
f2: remote is newer -> g
getting f2
f1: remote unchanged -> k
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ f --dump *
f1:
>>>
5 second change
<<<
f2:
>>>
6 second change
<<<
Verify how the output looks and and how verbose it is:
$ hg up -qC
$ hg merge
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg up -qC tip
$ hg merge -v
note: merging 3b08d01b0ab5+ and adfe50279922 using bids from ancestors 0f6b37dbe527 and 40663881a6dd
calculating bids for ancestor 0f6b37dbe527
resolving manifests
calculating bids for ancestor 40663881a6dd
resolving manifests
auction for merging merge bids (2 ancestors)
f1: picking 'get' action
f2: picking 'keep' action
end of auction
getting f1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg up -qC
$ hg merge -v --debug --config merge.preferancestor="*"
note: merging 3b08d01b0ab5+ and adfe50279922 using bids from ancestors 0f6b37dbe527 and 40663881a6dd
calculating bids for ancestor 0f6b37dbe527
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 0f6b37dbe527, local: 3b08d01b0ab5+, remote: adfe50279922
f1: remote is newer -> g
f2: versions differ -> m
calculating bids for ancestor 40663881a6dd
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 40663881a6dd, local: 3b08d01b0ab5+, remote: adfe50279922
f1: versions differ -> m
f2: remote unchanged -> k
auction for merging merge bids (2 ancestors)
list of bids for f1:
remote is newer -> g
versions differ -> m
f1: picking 'get' action
list of bids for f2:
remote unchanged -> k
versions differ -> m
f2: picking 'keep' action
end of auction
f1: remote is newer -> g
getting f1
f2: remote unchanged -> k
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
Test the greatest common ancestor returning multiple changesets
$ hg log -r 'heads(commonancestors(head()))'
changeset: 1:0f6b37dbe527
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 1 first change f1
changeset: 2:40663881a6dd
parent: 0:40494bf2444c
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2 first change f2
$ cd ..
http://stackoverflow.com/questions/9350005/how-do-i-specify-a-merge-base-to-use-in-a-hg-merge/9430810
$ hg init ancestor-merging
$ cd ancestor-merging
$ echo a > x
$ hg commit -A -m a x
$ hg update -q 0
$ echo b >> x
$ hg commit -m b
$ hg update -q 0
$ echo c >> x
$ hg commit -qm c
$ hg update -q 1
$ hg merge -q --tool internal:local 2
$ echo c >> x
$ hg commit -m bc
$ hg update -q 2
$ hg merge -q --tool internal:local 1
$ echo b >> x
$ hg commit -qm cb
$ hg merge --config merge.preferancestor='!'
note: using 70008a2163f6 as ancestor of 0d355fdef312 and 4b8b546a3eef
alternatively, use --config merge.preferancestor=b211bbc6eb3c
merging x
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat x
a
c
b
c
$ hg up -qC .
$ hg merge --config merge.preferancestor=b211bbc6eb3c
note: using b211bbc6eb3c as ancestor of 0d355fdef312 and 4b8b546a3eef
alternatively, use --config merge.preferancestor=70008a2163f6
merging x
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat x
a
b
c
b
$ hg up -qC .
$ hg merge -v --config merge.preferancestor="*"
note: merging 0d355fdef312+ and 4b8b546a3eef using bids from ancestors 70008a2163f6 and b211bbc6eb3c
calculating bids for ancestor 70008a2163f6
resolving manifests
calculating bids for ancestor b211bbc6eb3c
resolving manifests
auction for merging merge bids (2 ancestors)
x: multiple bids for merge action:
versions differ -> m
versions differ -> m
x: ambiguous merge - picked m action
end of auction
merging x
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat x
a
c
b
c
Verify that the old context ancestor works with / despite preferancestor:
$ hg log -r 'ancestor(head())' --config merge.preferancestor=1 -T '{rev}\n'
1
$ hg log -r 'ancestor(head())' --config merge.preferancestor=2 -T '{rev}\n'
2
$ hg log -r 'ancestor(head())' --config merge.preferancestor=3 -T '{rev}\n'
1
$ hg log -r 'ancestor(head())' --config merge.preferancestor='1337 * - 2' -T '{rev}\n'
2
$ cd ..
$ hg init issue5020
$ cd issue5020
$ echo a > noop
$ hg ci -qAm initial
$ echo b > noop
$ hg ci -qAm 'uninteresting change'
$ hg up -q 0
$ mkdir d1
$ echo a > d1/a
$ echo b > d1/b
$ hg ci -qAm 'add d1/a and d1/b'
$ hg merge -q 1
$ hg rm d1/a
$ hg mv -q d1 d2
$ hg ci -qm 'merge while removing d1/a and moving d1/b to d2/b'
$ hg up -q 1
$ hg merge -q 2
$ hg ci -qm 'merge (no changes while merging)'
$ hg log -G -T '{rev}:{node|short} {desc}'
@ 4:c0ef19750a22 merge (no changes while merging)
|\
+---o 3:6ca01f7342b9 merge while removing d1/a and moving d1/b to d2/b
| |/
| o 2:154e6000f54e add d1/a and d1/b
| |
o | 1:11b5b303e36c uninteresting change
|/
o 0:7b54db1ebf33 initial
$ hg merge 3 --debug
note: merging c0ef19750a22+ and 6ca01f7342b9 using bids from ancestors 11b5b303e36c and 154e6000f54e
calculating bids for ancestor 11b5b303e36c
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 11b5b303e36c, local: c0ef19750a22+, remote: 6ca01f7342b9
d1/a: ancestor missing, remote missing -> kn
d1/b: ancestor missing, remote missing -> kn
d2/b: remote created -> g
calculating bids for ancestor 154e6000f54e
unmatched files in other:
d2/b
all copies found (* = to merge, ! = divergent, % = renamed and deleted):
on remote side:
src: 'd1/b' -> dst: 'd2/b'
checking for directory renames
discovered dir src: 'd1/' -> dst: 'd2/'
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: 154e6000f54e, local: c0ef19750a22+, remote: 6ca01f7342b9
d1/a: other deleted -> r
d1/b: other deleted -> r
d2/b: remote created -> g
auction for merging merge bids (2 ancestors)
list of bids for d1/a:
ancestor missing, remote missing -> kn
other deleted -> r
d1/a: picking 'keep new' action
list of bids for d1/b:
ancestor missing, remote missing -> kn
other deleted -> r
d1/b: picking 'keep new' action
list of bids for d2/b:
remote created -> g
remote created -> g
d2/b: consensus for g
end of auction
d2/b: remote created -> g
getting d2/b
d1/a: ancestor missing, remote missing -> kn
d1/b: ancestor missing, remote missing -> kn
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
Check that removal reversion does not go unotified
==================================================
On a merge, a file can be removed and user can revert that removal. This means
user has made an explicit choice of keeping the file or reverting the removal
even though the merge algo wanted to remove it.
Based on this, when we do criss cross merges, merge algorithm should not again
choose to remove the file as in one of the merges, user made an explicit choice
to revert the removal.
Following test cases demonstrate how merge algo does not take in account
explicit choices made by users to revert the removal and on criss-cross merging
removes the file again.
"Simple" case where the filenode changes
----------------------------------------
$ cd ..
$ hg init criss-cross-merge-reversal-with-update
$ cd criss-cross-merge-reversal-with-update
$ echo the-file > the-file
$ echo other-file > other-file
$ hg add the-file other-file
$ hg ci -m 'root-commit'
$ echo foo >> the-file
$ echo bar >> other-file
$ hg ci -m 'updating-both-file'
$ hg up 'desc("root-commit")'
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg rm the-file
$ hg ci -m 'delete-the-file'
created new head
$ hg log -G -T '{node|short} {desc}\n'
@ 7801bc9b9899 delete-the-file
|
| o 9b610631ab29 updating-both-file
|/
o 955800955977 root-commit
Do all the merge combination (from the deleted or the update side × keeping and deleting the file
$ hg update 'desc("delete-the-file")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("updating-both-file")' -t :local
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg debugmergestate
local (working copy): 7801bc9b9899de5e304bd162cafde9b78e10ab9b
other (merge rev): 9b610631ab29024c5f44af7d2c19658ef8f8f071
file: the-file (state "r")
local path: the-file (hash 0000000000000000000000000000000000000000, flags "")
ancestor path: the-file (node 4b69178b9bdae28b651393b46e631427a72f217a)
other path: the-file (node 59e363a07dc876278f0e41756236f30213b6b460)
extra: ancestorlinknode = 955800955977bd6c103836ee3e437276e940a589
extra: merge-removal-candidate = yes
extra: merged = yes
extra: other-file (filenode-source = other)
$ hg ci -m "merge-deleting-the-file-from-deleted"
$ hg manifest
other-file
$ hg debugrevlogindex the-file
rev linkrev nodeid p1 p2
0 0 4b69178b9bda 000000000000 000000000000
1 1 59e363a07dc8 4b69178b9bda 000000000000
$ hg update 'desc("updating-both-file")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("delete-the-file")' -t :other
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg debugmergestate
local (working copy): 9b610631ab29024c5f44af7d2c19658ef8f8f071
other (merge rev): 7801bc9b9899de5e304bd162cafde9b78e10ab9b
file: the-file (state "r")
local path: the-file (hash 6d2e02da5a9fe0691363dc6b573845fa271eaa35, flags "")
ancestor path: the-file (node 4b69178b9bdae28b651393b46e631427a72f217a)
other path: the-file (node 0000000000000000000000000000000000000000)
extra: ancestorlinknode = 955800955977bd6c103836ee3e437276e940a589
extra: merge-removal-candidate = yes
extra: merged = yes
$ hg ci -m "merge-deleting-the-file-from-updated"
created new head
$ hg manifest
other-file
$ hg debugrevlogindex the-file
rev linkrev nodeid p1 p2
0 0 4b69178b9bda 000000000000 000000000000
1 1 59e363a07dc8 4b69178b9bda 000000000000
$ hg update 'desc("delete-the-file")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("updating-both-file")' -t :other
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg debugmergestate
local (working copy): 7801bc9b9899de5e304bd162cafde9b78e10ab9b
other (merge rev): 9b610631ab29024c5f44af7d2c19658ef8f8f071
file: the-file (state "r")
local path: the-file (hash 0000000000000000000000000000000000000000, flags "")
ancestor path: the-file (node 4b69178b9bdae28b651393b46e631427a72f217a)
other path: the-file (node 59e363a07dc876278f0e41756236f30213b6b460)
extra: ancestorlinknode = 955800955977bd6c103836ee3e437276e940a589
extra: merge-removal-candidate = yes
extra: merged = yes
extra: other-file (filenode-source = other)
$ hg ci -m "merge-keeping-the-file-from-deleted"
created new head
$ hg manifest
other-file
the-file
$ hg debugrevlogindex the-file
rev linkrev nodeid p1 p2
0 0 4b69178b9bda 000000000000 000000000000
1 1 59e363a07dc8 4b69178b9bda 000000000000
2 5 885af55420b3 59e363a07dc8 000000000000 (newfilenode !)
$ hg update 'desc("updating-both-file")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved (newfilenode !)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
$ hg merge 'desc("delete-the-file")' -t :local
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg debugmergestate
local (working copy): 9b610631ab29024c5f44af7d2c19658ef8f8f071
other (merge rev): 7801bc9b9899de5e304bd162cafde9b78e10ab9b
file: the-file (state "r")
local path: the-file (hash 6d2e02da5a9fe0691363dc6b573845fa271eaa35, flags "")
ancestor path: the-file (node 4b69178b9bdae28b651393b46e631427a72f217a)
other path: the-file (node 0000000000000000000000000000000000000000)
extra: ancestorlinknode = 955800955977bd6c103836ee3e437276e940a589
extra: merge-removal-candidate = yes
extra: merged = yes
$ hg ci -m "merge-keeping-the-file-from-updated"
created new head
$ hg manifest
other-file
the-file
XXX: This should create a new filenode because user explicitly decided to keep
the file. If we reuse the same filenode, future merges (criss-cross ones mostly)
will think that file remain unchanged and user explicit choice will not be taken
in consideration.
$ hg debugrevlogindex the-file
rev linkrev nodeid p1 p2
0 0 4b69178b9bda 000000000000 000000000000
1 1 59e363a07dc8 4b69178b9bda 000000000000
2 5 885af55420b3 59e363a07dc8 000000000000 (newfilenode !)
$ hg log -G -T '{node|short} {desc}\n'
@ 5e3eccec60d8 merge-keeping-the-file-from-updated
|\
+---o 38a4c3e7cac8 merge-keeping-the-file-from-deleted (newfilenode !)
+---o e9b708131723 merge-keeping-the-file-from-deleted (old !)
| |/
+---o a4e0e44229dc merge-deleting-the-file-from-updated
| |/
+---o adfd88e5d7d3 merge-deleting-the-file-from-deleted
| |/
| o 7801bc9b9899 delete-the-file
| |
o | 9b610631ab29 updating-both-file
|/
o 955800955977 root-commit
There the resulting merge together (leading to criss cross situation). Check
the conflict is properly detected.
(merging two deletion together → no conflict)
$ hg update --clean 'desc("merge-deleting-the-file-from-deleted")'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge 'desc("merge-deleting-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ ls -1
other-file
$ hg debugmergestate
no merge state found
(merging a deletion with keeping → conflict)
$ hg update --clean 'desc("merge-deleting-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
#if newfilenode
$ hg merge 'desc("merge-keeping-the-file-from-deleted")'
file 'the-file' was deleted in local [working copy] but was modified in other [merge rev].
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
#else
$ hg merge 'desc("merge-keeping-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
#endif
$ ls -1
other-file
the-file (newfilenode !)
#if newfilenode
$ hg debugmergestate
local (working copy): adfd88e5d7d3d3e22bdd26512991ee64d59c1d8f
other (merge rev): 38a4c3e7cac8c294ecb0a7a85a05464e9836ca78
file: the-file (state "u")
local path: the-file (hash 0000000000000000000000000000000000000000, flags "")
ancestor path: the-file (node 59e363a07dc876278f0e41756236f30213b6b460)
other path: the-file (node 885af55420b35d7bf3bbd6f546615295bfe6544a)
extra: ancestorlinknode = 9b610631ab29024c5f44af7d2c19658ef8f8f071
extra: merge-removal-candidate = yes
extra: merged = yes
#else
$ hg debugmergestate
local (working copy): adfd88e5d7d3d3e22bdd26512991ee64d59c1d8f
other (merge rev): e9b7081317232edce73f7ad5ae0b7807ff5c326a
extra: the-file (merge-removal-candidate = yes)
#endif
(merging a deletion with keeping → conflict)
BROKEN: this should result in conflict
$ hg update --clean 'desc("merge-deleting-the-file-from-deleted")'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved (newfilenode !)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
$ hg merge 'desc("merge-keeping-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ ls -1
other-file
$ hg debugmergestate
local (working copy): adfd88e5d7d3d3e22bdd26512991ee64d59c1d8f
other (merge rev): 5e3eccec60d88f94a7ba57c351f32cb24c15fe0c
extra: the-file (merge-removal-candidate = yes)
(merging two deletion together → no conflict)
$ hg update --clean 'desc("merge-deleting-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("merge-deleting-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ ls -1
other-file
$ hg debugmergestate
no merge state found
(merging a deletion with keeping → conflict)
$ hg update --clean 'desc("merge-deleting-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
#if newfilenode
$ hg merge 'desc("merge-keeping-the-file-from-deleted")'
file 'the-file' was deleted in local [working copy] but was modified in other [merge rev].
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
#else
$ hg merge 'desc("merge-keeping-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
#endif
$ ls -1
other-file
the-file (newfilenode !)
#if newfilenode
$ hg debugmergestate
local (working copy): a4e0e44229dc130be2915b92c957c093f8c7ee3e
other (merge rev): 38a4c3e7cac8c294ecb0a7a85a05464e9836ca78
file: the-file (state "u")
local path: the-file (hash 0000000000000000000000000000000000000000, flags "")
ancestor path: the-file (node 59e363a07dc876278f0e41756236f30213b6b460)
other path: the-file (node 885af55420b35d7bf3bbd6f546615295bfe6544a)
extra: ancestorlinknode = 9b610631ab29024c5f44af7d2c19658ef8f8f071
extra: merge-removal-candidate = yes
extra: merged = yes
#else
$ hg debugmergestate
local (working copy): a4e0e44229dc130be2915b92c957c093f8c7ee3e
other (merge rev): e9b7081317232edce73f7ad5ae0b7807ff5c326a
extra: the-file (merge-removal-candidate = yes)
#endif
(merging a deletion with keeping → conflict)
BROKEN: this should result in conflict
$ hg update --clean 'desc("merge-deleting-the-file-from-updated")'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved (newfilenode !)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
$ hg merge 'desc("merge-keeping-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ ls -1
other-file
$ hg debugmergestate
local (working copy): a4e0e44229dc130be2915b92c957c093f8c7ee3e
other (merge rev): 5e3eccec60d88f94a7ba57c351f32cb24c15fe0c
extra: the-file (merge-removal-candidate = yes)
(merging two "keeping" together → no conflict)
$ hg update --clean 'desc("merge-keeping-the-file-from-updated")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("merge-keeping-the-file-from-deleted")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved (newfilenode !)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
(branch merge, don't forget to commit)
$ ls -1
other-file
the-file
#if newfilenode
$ hg debugmergestate
local (working copy): 5e3eccec60d88f94a7ba57c351f32cb24c15fe0c
other (merge rev): 38a4c3e7cac8c294ecb0a7a85a05464e9836ca78
extra: the-file (filenode-source = other)
#else
$ hg debugmergestate
no merge state found
#endif
(merging a deletion with keeping → conflict)
BROKEN: this should result in conflict
$ hg update --clean 'desc("merge-keeping-the-file-from-updated")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved (newfilenode !)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
$ hg merge 'desc("merge-deleting-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ ls -1
other-file
the-file
$ hg debugmergestate
local (working copy): 5e3eccec60d88f94a7ba57c351f32cb24c15fe0c
other (merge rev): adfd88e5d7d3d3e22bdd26512991ee64d59c1d8f
extra: the-file (merge-removal-candidate = yes)
(merging a deletion with keeping → conflict)
BROKEN: this should result in conflict
$ hg update --clean 'desc("merge-keeping-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("merge-deleting-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ ls -1
other-file
the-file
$ hg debugmergestate
local (working copy): 5e3eccec60d88f94a7ba57c351f32cb24c15fe0c
other (merge rev): a4e0e44229dc130be2915b92c957c093f8c7ee3e
extra: the-file (merge-removal-candidate = yes)
(merging two "keeping" together → no conflict)
$ hg update --clean 'desc("merge-keeping-the-file-from-deleted")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved (newfilenode !)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved (old !)
$ hg merge 'desc("merge-keeping-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ ls -1
other-file
the-file
$ hg debugmergestate
no merge state found
(merging a deletion with keeping → conflict)
$ hg update --clean 'desc("merge-keeping-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
#if newfilenode
$ hg merge 'desc("merge-deleting-the-file-from-deleted")'
file 'the-file' was deleted in other [merge rev] but was modified in local [working copy].
You can use (c)hanged version, (d)elete, or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
#else
$ hg merge 'desc("merge-deleting-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
#endif
$ ls -1
other-file
the-file
#if newfilenode
$ hg debugmergestate
local (working copy): 38a4c3e7cac8c294ecb0a7a85a05464e9836ca78 (newfilenode !)
local (working copy): e9b7081317232edce73f7ad5ae0b7807ff5c326a (old !)
other (merge rev): adfd88e5d7d3d3e22bdd26512991ee64d59c1d8f
file: the-file (state "u")
local path: the-file (hash 6d2e02da5a9fe0691363dc6b573845fa271eaa35, flags "")
ancestor path: the-file (node 59e363a07dc876278f0e41756236f30213b6b460)
other path: the-file (node 0000000000000000000000000000000000000000)
extra: ancestorlinknode = 9b610631ab29024c5f44af7d2c19658ef8f8f071
extra: merge-removal-candidate = yes
extra: merged = yes
#else
$ hg debugmergestate
local (working copy): e9b7081317232edce73f7ad5ae0b7807ff5c326a
other (merge rev): adfd88e5d7d3d3e22bdd26512991ee64d59c1d8f
extra: the-file (merge-removal-candidate = yes)
#endif
(merging a deletion with keeping → conflict)
$ hg update --clean 'desc("merge-keeping-the-file-from-deleted")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
#if newfilenode
$ hg merge 'desc("merge-deleting-the-file-from-updated")'
file 'the-file' was deleted in other [merge rev] but was modified in local [working copy].
You can use (c)hanged version, (d)elete, or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
#else
$ hg merge 'desc("merge-deleting-the-file-from-updated")'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
#endif
$ ls -1
other-file
the-file
#if newfilenode
$ hg debugmergestate
local (working copy): 38a4c3e7cac8c294ecb0a7a85a05464e9836ca78
other (merge rev): a4e0e44229dc130be2915b92c957c093f8c7ee3e
file: the-file (state "u")
local path: the-file (hash 6d2e02da5a9fe0691363dc6b573845fa271eaa35, flags "")
ancestor path: the-file (node 59e363a07dc876278f0e41756236f30213b6b460)
other path: the-file (node 0000000000000000000000000000000000000000)
extra: ancestorlinknode = 9b610631ab29024c5f44af7d2c19658ef8f8f071
extra: merge-removal-candidate = yes
extra: merged = yes
#else
$ hg debugmergestate
local (working copy): e9b7081317232edce73f7ad5ae0b7807ff5c326a
other (merge rev): a4e0e44229dc130be2915b92c957c093f8c7ee3e
extra: the-file (merge-removal-candidate = yes)
#endif