nodemap: introduce an option to use mmap to read the nodemap mapping
The performance and memory benefit is much greater if we don't have to copy all
the data in memory for each information. So we introduce an option (on by
default) to read the data using mmap.
This changeset is the last one definition the API for index support nodemap
data. (they have to be able to use the mmaping).
Below are some benchmark comparing the best we currently have in 5.3 with the
final step of this series (using the persistent nodemap implementation in
Rust). The benchmark run `hg perfindex` with various revset and the following
variants:
Before:
* do not use the persistent nodemap
* use the CPython implementation of the index for nodemap
* use mmapping of the changelog index
After:
* use the MixedIndex Rust code, with the NodeTree object for nodemap access
(still in review)
* use the persistent nodemap data from disk
* access the persistent nodemap data through mmap
* use mmapping of the changelog index
The persistent nodemap greatly speed up most operation on very large
repositories. Some of the previously very fast lookup end up a bit slower because
the persistent nodemap has to be setup. However the absolute slowdown is very
small and won't matters in the big picture.
Here are some numbers (in seconds) for the reference copy of mozilla-try:
Revset Before After abs-change speedup
-10000: 0.004622 0.005532 0.000910 × 0.83
-10: 0.000050 0.000132 0.000082 × 0.37
tip 0.000052 0.000085 0.000033 × 0.61
0 + (-10000:) 0.028222 0.005337 -0.022885 × 5.29
0 0.023521 0.000084 -0.023437 × 280.01
(-10000:) + 0 0.235539 0.005308 -0.230231 × 44.37
(-10:) + :9 0.232883 0.000180 -0.232703 ×1293.79
(-10000:) + (:99) 0.238735 0.005358 -0.233377 × 44.55
:99 + (-10000:) 0.317942 0.005593 -0.312349 × 56.84
:9 + (-10:) 0.313372 0.000179 -0.313193 ×1750.68
:9 0.316450 0.000143 -0.316307 ×2212.93
On smaller repositories, the cost of nodemap related operation is not as big, so
the win is much more modest. Yet it helps shaving a handful of millisecond here
and there.
Here are some numbers (in seconds) for the reference copy of mercurial:
Revset Before After abs-change speedup
-10: 0.000065 0.000097 0.000032 × 0.67
tip 0.000063 0.000078 0.000015 × 0.80
0 0.000561 0.000079 -0.000482 × 7.10
-10000: 0.004609 0.003648 -0.000961 × 1.26
0 + (-10000:) 0.005023 0.003715 -0.001307 × 1.35
(-10:) + :9 0.002187 0.000108 -0.002079 ×20.25
(-10000:) + 0 0.006252 0.003716 -0.002536 × 1.68
(-10000:) + (:99) 0.006367 0.003707 -0.002660 × 1.71
:9 + (-10:) 0.003846 0.000110 -0.003736 ×34.96
:9 0.003854 0.000099 -0.003755 ×38.92
:99 + (-10000:) 0.007644 0.003778 -0.003866 × 2.02
Differential Revision: https://phab.mercurial-scm.org/D7894
#require symlink execbit
$ cat << EOF >> $HGRCPATH
> [phases]
> publish=False
> [extensions]
> amend=
> rebase=
> debugdrawdag=$TESTDIR/drawdag.py
> strip=
> [rebase]
> experimental.inmemory=1
> [diff]
> git=1
> [alias]
> tglog = log -G --template "{rev}: {node|short} '{desc}'\n"
> EOF
Rebase a simple DAG:
$ hg init repo1
$ cd repo1
$ hg debugdrawdag <<'EOS'
> c b
> |/
> d
> |
> a
> EOS
$ hg up -C a
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg tglog
o 3: 814f6bd05178 'c'
|
| o 2: db0e82a16a62 'b'
|/
o 1: 02952614a83d 'd'
|
@ 0: b173517d0057 'a'
$ hg cat -r 3 c
c (no-eol)
$ hg cat -r 2 b
b (no-eol)
$ hg rebase --debug -r b -d c | grep rebasing
rebasing in-memory
rebasing 2:db0e82a16a62 "b" (b)
$ hg tglog
o 3: ca58782ad1e4 'b'
|
o 2: 814f6bd05178 'c'
|
o 1: 02952614a83d 'd'
|
@ 0: b173517d0057 'a'
$ hg cat -r 3 b
b (no-eol)
$ hg cat -r 2 c
c (no-eol)
$ cd ..
Case 2:
$ hg init repo2
$ cd repo2
$ hg debugdrawdag <<'EOS'
> c b
> |/
> d
> |
> a
> EOS
Add a symlink and executable file:
$ hg up -C c
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ ln -s somefile e
$ echo f > f
$ chmod +x f
$ hg add e f
$ hg amend -q
$ hg up -Cq a
Write files to the working copy, and ensure they're still there after the rebase
$ echo "abc" > a
$ ln -s def b
$ echo "ghi" > c
$ echo "jkl" > d
$ echo "mno" > e
$ hg tglog
o 3: f56b71190a8f 'c'
|
| o 2: db0e82a16a62 'b'
|/
o 1: 02952614a83d 'd'
|
@ 0: b173517d0057 'a'
$ hg cat -r 3 c
c (no-eol)
$ hg cat -r 2 b
b (no-eol)
$ hg cat -r 3 e
somefile (no-eol)
$ hg rebase --debug -s b -d a | grep rebasing
rebasing in-memory
rebasing 2:db0e82a16a62 "b" (b)
$ hg tglog
o 3: fc055c3b4d33 'b'
|
| o 2: f56b71190a8f 'c'
| |
| o 1: 02952614a83d 'd'
|/
@ 0: b173517d0057 'a'
$ hg cat -r 2 c
c (no-eol)
$ hg cat -r 3 b
b (no-eol)
$ hg rebase --debug -s 1 -d 3 | grep rebasing
rebasing in-memory
rebasing 1:02952614a83d "d" (d)
rebasing 2:f56b71190a8f "c"
$ hg tglog
o 3: 753feb6fd12a 'c'
|
o 2: 09c044d2cb43 'd'
|
o 1: fc055c3b4d33 'b'
|
@ 0: b173517d0057 'a'
Ensure working copy files are still there:
$ cat a
abc
$ readlink.py b
b -> def
$ cat e
mno
Ensure symlink and executable files were rebased properly:
$ hg up -Cq 3
$ readlink.py e
e -> somefile
$ ls -l f | cut -c -10
-rwxr-xr-x
Rebase the working copy parent
$ hg up -C 3
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg rebase -r 3 -d 0 --debug | grep rebasing
rebasing in-memory
rebasing 3:753feb6fd12a "c" (tip)
$ hg tglog
@ 3: 844a7de3e617 'c'
|
| o 2: 09c044d2cb43 'd'
| |
| o 1: fc055c3b4d33 'b'
|/
o 0: b173517d0057 'a'
Test reporting of path conflicts
$ hg rm a
$ mkdir a
$ touch a/a
$ hg ci -Am "a/a"
adding a/a
$ hg tglog
@ 4: daf7dfc139cb 'a/a'
|
o 3: 844a7de3e617 'c'
|
| o 2: 09c044d2cb43 'd'
| |
| o 1: fc055c3b4d33 'b'
|/
o 0: b173517d0057 'a'
$ hg rebase -r . -d 2
rebasing 4:daf7dfc139cb "a/a" (tip)
saved backup bundle to $TESTTMP/repo2/.hg/strip-backup/daf7dfc139cb-fdbfcf4f-rebase.hg
$ hg tglog
@ 4: c6ad37a4f250 'a/a'
|
| o 3: 844a7de3e617 'c'
| |
o | 2: 09c044d2cb43 'd'
| |
o | 1: fc055c3b4d33 'b'
|/
o 0: b173517d0057 'a'
$ echo foo > foo
$ hg ci -Aqm "added foo"
$ hg up '.^'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo bar > bar
$ hg ci -Aqm "added bar"
$ hg rm a/a
$ echo a > a
$ hg ci -Aqm "added a back!"
$ hg tglog
@ 7: 855e9797387e 'added a back!'
|
o 6: d14530e5e3e6 'added bar'
|
| o 5: 9b94b9373deb 'added foo'
|/
o 4: c6ad37a4f250 'a/a'
|
| o 3: 844a7de3e617 'c'
| |
o | 2: 09c044d2cb43 'd'
| |
o | 1: fc055c3b4d33 'b'
|/
o 0: b173517d0057 'a'
$ hg rebase -r . -d 5
rebasing 7:855e9797387e "added a back!" (tip)
saved backup bundle to $TESTTMP/repo2/.hg/strip-backup/855e9797387e-81ee4c5d-rebase.hg
$ hg tglog
@ 7: bb3f02be2688 'added a back!'
|
| o 6: d14530e5e3e6 'added bar'
| |
o | 5: 9b94b9373deb 'added foo'
|/
o 4: c6ad37a4f250 'a/a'
|
| o 3: 844a7de3e617 'c'
| |
o | 2: 09c044d2cb43 'd'
| |
o | 1: fc055c3b4d33 'b'
|/
o 0: b173517d0057 'a'
$ mkdir -p c/subdir
$ echo c > c/subdir/file.txt
$ hg add c/subdir/file.txt
$ hg ci -m 'c/subdir/file.txt'
$ hg rebase -r . -d 3 -n
starting dry-run rebase; repository will not be changed
rebasing 8:e147e6e3c490 "c/subdir/file.txt" (tip)
abort: error: 'c/subdir/file.txt' conflicts with file 'c' in 3.
[255]
FIXME: shouldn't need this, but when we hit path conflicts in dryrun mode, we
don't clean up rebasestate.
$ hg rebase --abort
rebase aborted
$ hg rebase -r 3 -d . -n
starting dry-run rebase; repository will not be changed
rebasing 3:844a7de3e617 "c"
abort: error: file 'c' cannot be written because 'c/' is a directory in e147e6e3c490 (containing 1 entries: c/subdir/file.txt)
[255]
$ cd ..
Test path auditing (issue5818)
$ mkdir lib_
$ ln -s lib_ lib
$ hg init repo
$ cd repo
$ mkdir -p ".$TESTTMP/lib"
$ touch ".$TESTTMP/lib/a"
$ hg add ".$TESTTMP/lib/a"
$ hg ci -m 'a'
$ touch ".$TESTTMP/lib/b"
$ hg add ".$TESTTMP/lib/b"
$ hg ci -m 'b'
$ hg up -q '.^'
$ touch ".$TESTTMP/lib/c"
$ hg add ".$TESTTMP/lib/c"
$ hg ci -m 'c'
created new head
$ hg rebase -s 1 -d .
rebasing 1:* "b" (glob)
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-rebase.hg (glob)
$ cd ..
Test dry-run rebasing
$ hg init repo3
$ cd repo3
$ echo a>a
$ hg ci -Aqma
$ echo b>b
$ hg ci -Aqmb
$ echo c>c
$ hg ci -Aqmc
$ echo d>d
$ hg ci -Aqmd
$ echo e>e
$ hg ci -Aqme
$ hg up 1 -q
$ echo f>f
$ hg ci -Amf
adding f
created new head
$ echo g>g
$ hg ci -Aqmg
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
Make sure it throws error while passing --continue or --abort with --dry-run
$ hg rebase -s 2 -d 6 -n --continue
abort: cannot specify both --continue and --dry-run
[255]
$ hg rebase -s 2 -d 6 -n --abort
abort: cannot specify both --abort and --dry-run
[255]
Check dryrun gives correct results when there is no conflict in rebasing
$ hg rebase -s 2 -d 6 -n
starting dry-run rebase; repository will not be changed
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
dry-run rebase completed successfully; run without -n/--dry-run to perform this rebase
$ hg diff
$ hg status
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
Check dryrun working with --collapse when there is no conflict
$ hg rebase -s 2 -d 6 -n --collapse
starting dry-run rebase; repository will not be changed
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
dry-run rebase completed successfully; run without -n/--dry-run to perform this rebase
Check dryrun gives correct results when there is conflict in rebasing
Make a conflict:
$ hg up 6 -q
$ echo conflict>e
$ hg ci -Aqm "conflict with e"
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 7:d2c195b28050 test
| conflict with e
|
o 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
$ hg rebase -s 2 -d 7 -n
starting dry-run rebase; repository will not be changed
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
merging e
transaction abort!
rollback completed
hit a merge conflict
[1]
$ hg diff
$ hg status
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 7:d2c195b28050 test
| conflict with e
|
o 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
Check dryrun working with --collapse when there is conflicts
$ hg rebase -s 2 -d 7 -n --collapse
starting dry-run rebase; repository will not be changed
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
merging e
hit a merge conflict
[1]
In-memory rebase that fails due to merge conflicts
$ hg rebase -s 2 -d 7
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
merging e
transaction abort!
rollback completed
hit merge conflicts; re-running rebase without in-memory merge
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
merging e
warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
$ hg rebase --abort
saved backup bundle to $TESTTMP/repo3/.hg/strip-backup/c1e524d4287c-f91f82e1-backup.hg
rebase aborted
Retrying without in-memory merge won't lose working copy changes
$ cd ..
$ hg clone repo3 repo3-dirty -q
$ cd repo3-dirty
$ echo dirty > a
$ hg rebase -s 2 -d 7
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
merging e
transaction abort!
rollback completed
hit merge conflicts; re-running rebase without in-memory merge
abort: uncommitted changes
[255]
$ cat a
dirty
Retrying without in-memory merge won't lose merge state
$ cd ..
$ hg clone repo3 repo3-merge-state -q
$ cd repo3-merge-state
$ hg merge 4
merging e
warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
2 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]
$ hg resolve -l
U e
$ hg rebase -s 2 -d 7
abort: outstanding uncommitted merge
(use 'hg commit' or 'hg merge --abort')
[255]
$ hg resolve -l
U e
==========================
Test for --confirm option|
==========================
$ cd ..
$ hg clone repo3 repo4 -q
$ cd repo4
$ hg strip 7 -q
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
Check it gives error when both --dryrun and --confirm is used:
$ hg rebase -s 2 -d . --confirm --dry-run
abort: cannot specify both --confirm and --dry-run
[255]
$ hg rebase -s 2 -d . --confirm --abort
abort: cannot specify both --abort and --confirm
[255]
$ hg rebase -s 2 -d . --confirm --continue
abort: cannot specify both --continue and --confirm
[255]
Test --confirm option when there are no conflicts:
$ hg rebase -s 2 -d . --keep --config ui.interactive=True --confirm << EOF
> n
> EOF
starting in-memory rebase
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
rebase completed successfully
apply changes (yn)? n
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
$ hg rebase -s 2 -d . --keep --config ui.interactive=True --confirm << EOF
> y
> EOF
starting in-memory rebase
rebasing 2:177f92b77385 "c"
rebasing 3:055a42cdd887 "d"
rebasing 4:e860deea161a "e"
rebase completed successfully
apply changes (yn)? y
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
o 9:9fd28f55f6dc test
| e
|
o 8:12cbf031f469 test
| d
|
o 7:c83b1da5b1ae test
| c
|
@ 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
Test --confirm option when there is a conflict
$ hg up tip -q
$ echo ee>e
$ hg ci --amend -m "conflict with e" -q
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 9:906d72f66a59 test
| conflict with e
|
o 8:12cbf031f469 test
| d
|
o 7:c83b1da5b1ae test
| c
|
o 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
$ hg rebase -s 4 -d . --keep --confirm
starting in-memory rebase
rebasing 4:e860deea161a "e"
merging e
hit a merge conflict
[1]
$ hg log -G --template "{rev}:{short(node)} {person(author)}\n{firstline(desc)} {topic}\n\n"
@ 9:906d72f66a59 test
| conflict with e
|
o 8:12cbf031f469 test
| d
|
o 7:c83b1da5b1ae test
| c
|
o 6:baf10c5166d4 test
| g
|
o 5:6343ca3eff20 test
| f
|
| o 4:e860deea161a test
| | e
| |
| o 3:055a42cdd887 test
| | d
| |
| o 2:177f92b77385 test
|/ c
|
o 1:d2ae7f538514 test
| b
|
o 0:cb9a9f314b8b test
a
Test a metadata-only in-memory merge
$ cd $TESTTMP
$ hg init no_exception
$ cd no_exception
# Produce the following graph:
# o 'add +x to foo.txt'
# | o r1 (adds bar.txt, just for something to rebase to)
# |/
# o r0 (adds foo.txt, no +x)
$ echo hi > foo.txt
$ hg ci -qAm r0
$ echo hi > bar.txt
$ hg ci -qAm r1
$ hg co -qr ".^"
$ chmod +x foo.txt
$ hg ci -qAm 'add +x to foo.txt'
issue5960: this was raising an AttributeError exception
$ hg rebase -r . -d 1
rebasing 2:539b93e77479 "add +x to foo.txt" (tip)
saved backup bundle to $TESTTMP/no_exception/.hg/strip-backup/*.hg (glob)
$ hg diff -c tip
diff --git a/foo.txt b/foo.txt
old mode 100644
new mode 100755
Test rebasing a commit with copy information, but no content changes
$ cd ..
$ hg clone -q repo1 merge-and-rename
$ cd merge-and-rename
$ cat << EOF >> .hg/hgrc
> [experimental]
> evolution.createmarkers=True
> evolution.allowunstable=True
> EOF
$ hg co -q 1
$ hg mv d e
$ hg ci -qm 'rename d to e'
$ hg co -q 3
$ hg merge -q 4
$ hg ci -m 'merge'
$ hg co -q 2
$ mv d e
$ hg addremove -qs 0
$ hg ci -qm 'untracked rename of d to e'
$ hg debugobsolete -q `hg log -T '{node}' -r 4` `hg log -T '{node}' -r .`
1 new orphan changesets
$ hg tglog
@ 6: 676538af172d 'untracked rename of d to e'
|
| * 5: 574d92ad16fc 'merge'
| |\
| | x 4: 2c8b5dad7956 'rename d to e'
| | |
| o | 3: ca58782ad1e4 'b'
|/ /
o / 2: 814f6bd05178 'c'
|/
o 1: 02952614a83d 'd'
|
o 0: b173517d0057 'a'
$ hg rebase -b 5 -d tip
rebasing 3:ca58782ad1e4 "b"
rebasing 5:574d92ad16fc "merge"
note: not rebasing 5:574d92ad16fc "merge", its destination already has all its changes
$ cd ..
Test rebasing a commit with copy information
$ hg init rebase-rename
$ cd rebase-rename
$ echo a > a
$ hg ci -Aqm 'add a'
$ echo a2 > a
$ hg ci -m 'modify a'
$ hg co -q 0
$ hg mv a b
$ hg ci -qm 'rename a to b'
$ hg rebase -d 1
rebasing 2:b977edf6f839 "rename a to b" (tip)
merging a and b to b
saved backup bundle to $TESTTMP/rebase-rename/.hg/strip-backup/b977edf6f839-0864f570-rebase.hg
$ hg st --copies --change .
A b
a
R a
$ cd ..
Test rebasing a commit with copy information, where the target is empty
$ hg init rebase-rename-empty
$ cd rebase-rename-empty
$ echo a > a
$ hg ci -Aqm 'add a'
$ cat > a
$ hg ci -m 'make a empty'
$ hg co -q 0
$ hg mv a b
$ hg ci -qm 'rename a to b'
$ hg rebase -d 1
rebasing 2:b977edf6f839 "rename a to b" (tip)
merging a and b to b
saved backup bundle to $TESTTMP/rebase-rename-empty/.hg/strip-backup/b977edf6f839-0864f570-rebase.hg
$ hg st --copies --change .
A b
a
R a
$ cd ..
Rebase across a copy with --collapse
$ hg init rebase-rename-collapse
$ cd rebase-rename-collapse
$ echo a > a
$ hg ci -Aqm 'add a'
$ hg mv a b
$ hg ci -m 'rename a to b'
$ hg co -q 0
$ echo a2 > a
$ hg ci -qm 'modify a'
$ hg rebase -r . -d 1 --collapse
rebasing 2:41c4ea50d4cf "modify a" (tip)
merging b and a to b
saved backup bundle to $TESTTMP/rebase-rename-collapse/.hg/strip-backup/41c4ea50d4cf-b90b7994-rebase.hg
$ cd ..
Test rebasing when the file we are merging in destination is empty
$ hg init test
$ cd test
$ echo a > foo
$ hg ci -Aqm 'added a to foo'
$ rm foo
$ touch foo
$ hg di
diff --git a/foo b/foo
--- a/foo
+++ b/foo
@@ -1,1 +0,0 @@
-a
$ hg ci -m "make foo an empty file"
$ hg up '.^'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo b > foo
$ hg di
diff --git a/foo b/foo
--- a/foo
+++ b/foo
@@ -1,1 +1,1 @@
-a
+b
$ hg ci -m "add b to foo"
created new head
$ hg rebase -r . -d 1 --config ui.merge=internal:merge3
rebasing 2:fb62b706688e "add b to foo" (tip)
merging foo
hit merge conflicts; re-running rebase without in-memory merge
rebasing 2:fb62b706688e "add b to foo" (tip)
merging foo
warning: conflicts while merging foo! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
$ cd $TESTTMP
Test rebasing when we're in the middle of a rebase already
$ hg init test_issue6214
$ cd test_issue6214
$ echo r0 > r0
$ hg ci -qAm 'r0'
$ echo hi > foo
$ hg ci -qAm 'hi from foo'
$ hg co -q '.^'
$ echo bye > foo
$ hg ci -qAm 'bye from foo'
$ hg co -q '.^'
$ echo unrelated > some_other_file
$ hg ci -qAm 'some unrelated changes'
$ hg log -G -T'{rev}: {desc}\n{files%"{file}\n"}'
@ 3: some unrelated changes
| some_other_file
| o 2: bye from foo
|/ foo
| o 1: hi from foo
|/ foo
o 0: r0
r0
$ hg rebase -r 2 -d 1 -t:merge3
rebasing 2:b4d249fbf8dd "bye from foo"
merging foo
hit merge conflicts; re-running rebase without in-memory merge
rebasing 2:b4d249fbf8dd "bye from foo"
merging foo
warning: conflicts while merging foo! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
$ hg rebase -r 3 -d 1 -t:merge3
abort: rebase in progress
(use 'hg rebase --continue' or 'hg rebase --abort')
[255]
$ hg resolve --list
U foo
$ hg resolve --all --re-merge -t:other
(no more unresolved files)
continue: hg rebase --continue
$ hg rebase --continue
rebasing 2:b4d249fbf8dd "bye from foo"
saved backup bundle to $TESTTMP/test_issue6214/.hg/strip-backup/b4d249fbf8dd-299ec25c-rebase.hg
$ hg log -G -T'{rev}: {desc}\n{files%"{file}\n"}'
o 3: bye from foo
| foo
| @ 2: some unrelated changes
| | some_other_file
o | 1: hi from foo
|/ foo
o 0: r0
r0