perf: add perfmoonwalk command to walk the changelog backwards
This lets us test the effectiveness (or ineffectiveness) of the revlog chunk
cache when walking revlogs backwards.
$ . "$TESTDIR/histedit-helpers.sh"
$ cat >> $HGRCPATH <<EOF
> [extensions]
> histedit=
> EOF
$ initrepo ()
> {
> hg init r
> cd r
> for x in a b c d e f ; do
> echo $x > $x
> hg add $x
> hg ci -m $x
> done
> }
$ initrepo
log before edit
$ hg log --graph
@ changeset: 5:652413bf663e
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: f
|
o changeset: 4:e860deea161a
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: e
|
o changeset: 3:055a42cdd887
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: d
|
o changeset: 2:177f92b77385
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: c
|
o changeset: 1:d2ae7f538514
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:cb9a9f314b8b
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
edit the history
$ hg histedit 177f92b77385 --commands - 2>&1 << EOF| fixbundle
> pick 177f92b77385 c
> pick 055a42cdd887 d
> edit e860deea161a e
> pick 652413bf663e f
> EOF
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
Make changes as needed, you may commit or record as needed now.
When you are finished, run hg histedit --continue to resume.
Go at a random point and try to continue
$ hg id -n
3+
$ hg up 0
abort: histedit in progress
(use 'hg histedit --continue' or 'hg histedit --abort')
[255]
commit, then edit the revision
$ hg ci -m 'wat'
created new head
$ echo a > e
$ HGEDITOR='echo foobaz > ' hg histedit --continue 2>&1 | fixbundle
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg log --graph
@ changeset: 6:b5f70786f9b0
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: f
|
o changeset: 5:a5e1ba2f7afb
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: foobaz
|
o changeset: 4:1a60820cd1f6
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: wat
|
o changeset: 3:055a42cdd887
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: d
|
o changeset: 2:177f92b77385
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: c
|
o changeset: 1:d2ae7f538514
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:cb9a9f314b8b
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
$ hg cat e
a
check histedit_source
$ hg log --debug --rev 5
changeset: 5:a5e1ba2f7afb899ef1581cea528fd885d2fca70d
phase: draft
parent: 4:1a60820cd1f6004a362aa622ebc47d59bc48eb34
parent: -1:0000000000000000000000000000000000000000
manifest: 5:5ad3be8791f39117565557781f5464363b918a45
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: e
extra: branch=default
extra: histedit_source=e860deea161a2f77de56603b340ebbb4536308ae
description:
foobaz
$ hg histedit tip --commands - 2>&1 <<EOF| fixbundle
> edit b5f70786f9b0 f
> EOF
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
Make changes as needed, you may commit or record as needed now.
When you are finished, run hg histedit --continue to resume.
$ hg status
A f
$ hg summary
parent: 5:a5e1ba2f7afb
foobaz
branch: default
commit: 1 added (new branch head)
update: 1 new changesets (update)
hist: 1 remaining (histedit --continue)
$ HGEDITOR='true' hg histedit --continue
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/r/.hg/strip-backup/b5f70786f9b0-backup.hg (glob)
$ hg status
log after edit
$ hg log --limit 1
changeset: 6:a107ee126658
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: f
say we'll change the message, but don't.
$ cat > ../edit.sh <<EOF
> cat "\$1" | sed s/pick/mess/ > tmp
> mv tmp "\$1"
> EOF
$ HGEDITOR="sh ../edit.sh" hg histedit tip 2>&1 | fixbundle
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg status
$ hg log --limit 1
changeset: 6:1fd3b2fe7754
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: f
modify the message
$ hg histedit tip --commands - 2>&1 << EOF | fixbundle
> mess 1fd3b2fe7754 f
> EOF
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg status
$ hg log --limit 1
changeset: 6:62feedb1200e
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: f
rollback should not work after a histedit
$ hg rollback
no rollback information available
[1]
$ cd ..
$ hg clone -qr0 r r0
$ cd r0
$ hg phase -fdr0
$ hg histedit --commands - 0 2>&1 << EOF
> edit cb9a9f314b8b a > $EDITED
> EOF
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
adding a
Make changes as needed, you may commit or record as needed now.
When you are finished, run hg histedit --continue to resume.
[1]
$ HGEDITOR=true hg histedit --continue
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/r0/.hg/strip-backup/cb9a9f314b8b-backup.hg (glob)