tests/test-annotate.t

sidedatacopies: fast path data fetching if revision has no sidedata

When using the side data mode, we know their won't be any copy information
sidedata. Skipping revision restoration give an important speed boost.

In the future, there will be other user of sidedata, reducing the efficiency of
this. We should consider adding a dedicated flag in revlog V2 to preserve this
optimisation. The current situation is good enough for now.

revision: large amount; added files: large amount; rename small amount; c3b14617fbd7 9ba6ab77fd29
before:  ! wall 2.401569 comb 2.400000 user 2.390000 sys 0.010000 (median of 10)
after:   ! wall 1.429294 comb 1.430000 user 1.410000 sys 0.020000 (median of 10)
revision: large amount; added files: small amount; rename small amount; c3b14617fbd7 f650a9b140d2
before:  ! wall 3.519140 comb 3.520000 user 3.470000 sys 0.050000 (median of 10)
after:   ! wall 1.963332 comb 1.960000 user 1.960000 sys 0.000000 (median of 10)
revision: large amount; added files: large amount; rename large amount; 08ea3258278e d9fa043f30c0
before:  ! wall 0.593880 comb 0.600000 user 0.590000 sys 0.010000 (median of 15)
after:   ! wall 0.251679 comb 0.250000 user 0.250000 sys 0.000000 (median of 38)
revision: small amount; added files: large amount; rename large amount; df6f7a526b60 a83dc6a2d56f
before:  ! wall 0.013414 comb 0.020000 user 0.020000 sys 0.000000 (median of 220)
after:   ! wall 0.013222 comb 0.020000 user 0.020000 sys 0.000000 (median of 223)
revision: small amount; added files: large amount; rename small amount; 4aa4e1f8e19a 169138063d63
before:  ! wall 0.002711 comb 0.000000 user 0.000000 sys 0.000000 (median of 1000)
after:   ! wall 0.001631 comb 0.000000 user 0.000000 sys 0.000000 (median of 1000)
revision: small amount; added files: small amount; rename small amount; 4bc173b045a6 964879152e2e
before:  ! wall 0.000077 comb 0.000000 user 0.000000 sys 0.000000 (median of 12208)
after:   ! wall 0.000078 comb 0.000000 user 0.000000 sys 0.000000 (median of 12012)
revision: medium amount; added files: large amount; rename medium amount; c95f1ced15f2 2c68e87c3efe
before:  ! wall 0.410067 comb 0.410000 user 0.410000 sys 0.000000 (median of 23)
after:   ! wall 0.207786 comb 0.200000 user 0.200000 sys 0.000000 (median of 46)
revision: medium amount; added files: medium amount; rename small amount; d343da0c55a8 d7746d32bf9d
before:  ! wall 0.097004 comb 0.090000 user 0.090000 sys 0.000000 (median of 100)
after:   ! wall 0.038495 comb 0.030000 user 0.030000 sys 0.000000 (median of 100)

Differential Revision: https://phab.mercurial-scm.org/D7074

  $ cat >> "$HGRCPATH" << EOF
  > [ui]
  > merge = :merge3
  > EOF

init

  $ hg init repo
  $ cd repo

commit

  $ echo 'a' > a
  $ hg ci -A -m test -u nobody -d '1 0'
  adding a

annotate -c

  $ hg annotate -c a
  8435f90966e4: a

annotate -cl

  $ hg annotate -cl a
  8435f90966e4:1: a

annotate -d

  $ hg annotate -d a
  Thu Jan 01 00:00:01 1970 +0000: a

annotate -n

  $ hg annotate -n a
  0: a

annotate -nl

  $ hg annotate -nl a
  0:1: a

annotate -u

  $ hg annotate -u a
  nobody: a

annotate -cdnu

  $ hg annotate -cdnu a
  nobody 0 8435f90966e4 Thu Jan 01 00:00:01 1970 +0000: a

annotate -cdnul

  $ hg annotate -cdnul a
  nobody 0 8435f90966e4 Thu Jan 01 00:00:01 1970 +0000:1: a

annotate (JSON)

  $ hg annotate -Tjson a
  [
   {
    "lines": [{"line": "a\n", "rev": 0}],
    "path": "a"
   }
  ]

  $ hg annotate -Tjson -cdfnul a
  [
   {
    "lines": [{"date": [1.0, 0], "line": "a\n", "lineno": 1, "node": "8435f90966e442695d2ded29fdade2bac5ad8065", "path": "a", "rev": 0, "user": "nobody"}],
    "path": "a"
   }
  ]

log-like templating

  $ hg annotate -T'{lines % "{rev} {node|shortest}: {line}"}' a
  0 8435: a

'{lineno}' field should be populated as necessary

  $ hg annotate -T'{lines % "{rev}:{lineno}: {line}"}' a
  0:1: a
  $ hg annotate -Ta a \
  > --config templates.a='"{lines % "{rev}:{lineno}: {line}"}"'
  0:1: a

  $ cat <<EOF >>a
  > a
  > a
  > EOF
  $ hg ci -ma1 -d '1 0'
  $ hg cp a b
  $ hg ci -mb -d '1 0'
  $ cat <<EOF >> b
  > b4
  > b5
  > b6
  > EOF
  $ hg ci -mb2 -d '2 0'

default output of '{lines}' should be readable

  $ hg annotate -T'{lines}' a
  0: a
  1: a
  1: a
  $ hg annotate -T'{join(lines, "\n")}' a
  0: a
  
  1: a
  
  1: a

several filters can be applied to '{lines}'

  $ hg annotate -T'{lines|json}\n' a
  [{"line": "a\n", "rev": 0}, {"line": "a\n", "rev": 1}, {"line": "a\n", "rev": 1}]
  $ hg annotate -T'{lines|stringify}' a
  0: a
  1: a
  1: a
  $ hg annotate -T'{lines|count}\n' a
  3

annotate multiple files (JSON)

  $ hg annotate -Tjson a b
  [
   {
    "lines": [{"line": "a\n", "rev": 0}, {"line": "a\n", "rev": 1}, {"line": "a\n", "rev": 1}],
    "path": "a"
   },
   {
    "lines": [{"line": "a\n", "rev": 0}, {"line": "a\n", "rev": 1}, {"line": "a\n", "rev": 1}, {"line": "b4\n", "rev": 3}, {"line": "b5\n", "rev": 3}, {"line": "b6\n", "rev": 3}],
    "path": "b"
   }
  ]

annotate multiple files (template)

  $ hg annotate -T'== {path} ==\n{lines % "{rev}: {line}"}' a b
  == a ==
  0: a
  1: a
  1: a
  == b ==
  0: a
  1: a
  1: a
  3: b4
  3: b5
  3: b6

annotate -n b

  $ hg annotate -n b
  0: a
  1: a
  1: a
  3: b4
  3: b5
  3: b6

annotate --no-follow b

  $ hg annotate --no-follow b
  2: a
  2: a
  2: a
  3: b4
  3: b5
  3: b6

annotate -nl b

  $ hg annotate -nl b
  0:1: a
  1:2: a
  1:3: a
  3:4: b4
  3:5: b5
  3:6: b6

annotate -nf b

  $ hg annotate -nf b
  0 a: a
  1 a: a
  1 a: a
  3 b: b4
  3 b: b5
  3 b: b6

annotate -nlf b

  $ hg annotate -nlf b
  0 a:1: a
  1 a:2: a
  1 a:3: a
  3 b:4: b4
  3 b:5: b5
  3 b:6: b6

  $ hg up -C 2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat <<EOF >> b
  > b4
  > c
  > b5
  > EOF
  $ hg ci -mb2.1 -d '2 0'
  created new head
  $ hg merge
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  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]
  $ cat b
  a
  a
  a
  <<<<<<< working copy: 5fbdc1152d97 - test: b2.1
  b4
  c
  b5
  ||||||| base
  =======
  b4
  b5
  b6
  >>>>>>> merge rev:    37ec9f5c3d1f - test: b2
  $ cat <<EOF > b
  > a
  > a
  > a
  > b4
  > c
  > b5
  > EOF
  $ hg resolve --mark -q
  $ rm b.orig
  $ hg ci -mmergeb -d '3 0'

annotate after merge

  $ hg annotate -nf b
  0 a: a
  1 a: a
  1 a: a
  3 b: b4
  4 b: c
  3 b: b5

annotate after merge with -l

  $ hg annotate -nlf b
  0 a:1: a
  1 a:2: a
  1 a:3: a
  3 b:4: b4
  4 b:5: c
  3 b:5: b5

  $ hg up -C 1
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg cp a b
  $ cat <<EOF > b
  > a
  > z
  > a
  > EOF
  $ hg ci -mc -d '3 0'
  created new head
Work around the pure version not resolving the conflict like native code
#if pure
  $ hg merge
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  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]
  $ cat <<EOF > b
  > a
  > z
  > a
  > b4
  > c
  > b5
  > EOF
  $ hg resolve -m b
  (no more unresolved files)
  $ rm b.orig
#else
  $ hg merge
  merging b
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
#endif
  $ echo d >> b
  $ hg ci -mmerge2 -d '4 0'

annotate after rename merge

  $ hg annotate -nf b
  0 a: a
  6 b: z
  1 a: a
  3 b: b4
  4 b: c
  3 b: b5
  7 b: d

annotate after rename merge with -l

  $ hg annotate -nlf b
  0 a:1: a
  6 b:2: z
  1 a:3: a
  3 b:4: b4
  4 b:5: c
  3 b:5: b5
  7 b:7: d

--skip nothing (should be the same as no --skip at all)

  $ hg annotate -nlf b --skip '1::0'
  0 a:1: a
  6 b:2: z
  1 a:3: a
  3 b:4: b4
  4 b:5: c
  3 b:5: b5
  7 b:7: d

--skip a modified line. Note a slight behavior difference in pure - this is
because the pure code comes up with slightly different deltas internally.

  $ hg annotate -nlf b --skip 6
  0 a:1: a
  1 a:2* z (no-pure !)
  0 a:1* z (pure !)
  1 a:3: a
  3 b:4: b4
  4 b:5: c
  3 b:5: b5
  7 b:7: d

--skip added lines (and test multiple skip)

  $ hg annotate -nlf b --skip 3
  0 a:1: a
  6 b:2: z
  1 a:3: a
  1 a:3* b4
  4 b:5: c
  1 a:3* b5
  7 b:7: d

  $ hg annotate -nlf b --skip 4
  0 a:1: a
  6 b:2: z
  1 a:3: a
  3 b:4: b4
  1 a:3* c
  3 b:5: b5
  7 b:7: d

  $ hg annotate -nlf b --skip 3 --skip 4
  0 a:1: a
  6 b:2: z
  1 a:3: a
  1 a:3* b4
  1 a:3* c
  1 a:3* b5
  7 b:7: d

  $ hg annotate -nlf b --skip 'merge()'
  0 a:1: a
  6 b:2: z
  1 a:3: a
  3 b:4: b4
  4 b:5: c
  3 b:5: b5
  3 b:5* d

--skip everything -- use the revision the file was introduced in

  $ hg annotate -nlf b --skip 'all()'
  0 a:1: a
  0 a:1* z
  0 a:1* a
  0 a:1* b4
  0 a:1* c
  0 a:1* b5
  0 a:1* d

Issue2807: alignment of line numbers with -l

  $ echo more >> b
  $ hg ci -mmore -d '5 0'
  $ echo more >> b
  $ hg ci -mmore -d '6 0'
  $ echo more >> b
  $ hg ci -mmore -d '7 0'
  $ hg annotate -nlf b
   0 a: 1: a
   6 b: 2: z
   1 a: 3: a
   3 b: 4: b4
   4 b: 5: c
   3 b: 5: b5
   7 b: 7: d
   8 b: 8: more
   9 b: 9: more
  10 b:10: more

linkrev vs rev

  $ hg annotate -r tip -n a
  0: a
  1: a
  1: a

linkrev vs rev with -l

  $ hg annotate -r tip -nl a
  0:1: a
  1:2: a
  1:3: a

Issue589: "undelete" sequence leads to crash

annotate was crashing when trying to --follow something

like A -> B -> A

generate ABA rename configuration

  $ echo foo > foo
  $ hg add foo
  $ hg ci -m addfoo
  $ hg rename foo bar
  $ hg ci -m renamefoo
  $ hg rename bar foo
  $ hg ci -m renamebar

annotate after ABA with follow

  $ hg annotate --follow foo
  foo: foo

missing file

  $ hg ann nosuchfile
  abort: nosuchfile: no such file in rev e9e6b4fa872f
  [255]

annotate file without '\n' on last line

  $ printf "" > c
  $ hg ci -A -m test -u nobody -d '1 0'
  adding c
  $ hg annotate c
  $ printf "a\nb" > c
  $ hg ci -m test
  $ hg annotate c
  [0-9]+: a (re)
  [0-9]+: b (re)

Issue3841: check annotation of the file of which filelog includes
merging between the revision and its ancestor

to reproduce the situation with recent Mercurial, this script uses (1)
"hg debugsetparents" to merge without ancestor check by "hg merge",
and (2) the extension to allow filelog merging between the revision
and its ancestor by overriding "repo._filecommit".

  $ cat > ../legacyrepo.py <<EOF
  > from __future__ import absolute_import
  > from mercurial import error, node
  > def reposetup(ui, repo):
  >     class legacyrepo(repo.__class__):
  >         def _filecommit(self, fctx, manifest1, manifest2,
  >                         linkrev, tr, changelist, includecopymeta):
  >             fname = fctx.path()
  >             text = fctx.data()
  >             flog = self.file(fname)
  >             fparent1 = manifest1.get(fname, node.nullid)
  >             fparent2 = manifest2.get(fname, node.nullid)
  >             meta = {}
  >             copy = fctx.copysource()
  >             if copy and copy != fname:
  >                 raise error.Abort('copying is not supported')
  >             if fparent2 != node.nullid:
  >                 changelist.append(fname)
  >                 return flog.add(text, meta, tr, linkrev,
  >                                 fparent1, fparent2)
  >             raise error.Abort('only merging is supported')
  >     repo.__class__ = legacyrepo
  > EOF

  $ cat > baz <<EOF
  > 1
  > 2
  > 3
  > 4
  > 5
  > EOF
  $ hg add baz
  $ hg commit -m "baz:0"

  $ cat > baz <<EOF
  > 1 baz:1
  > 2
  > 3
  > 4
  > 5
  > EOF
  $ hg commit -m "baz:1"

  $ cat > baz <<EOF
  > 1 baz:1
  > 2 baz:2
  > 3
  > 4
  > 5
  > EOF
  $ hg debugsetparents 17 17
  $ hg --config extensions.legacyrepo=../legacyrepo.py  commit -m "baz:2"
  $ hg debugindexdot baz
  digraph G {
  	-1 -> 0
  	0 -> 1
  	1 -> 2
  	1 -> 2
  }
  $ hg annotate baz
  17: 1 baz:1
  18: 2 baz:2
  16: 3
  16: 4
  16: 5

  $ cat > baz <<EOF
  > 1 baz:1
  > 2 baz:2
  > 3 baz:3
  > 4
  > 5
  > EOF
  $ hg commit -m "baz:3"

  $ cat > baz <<EOF
  > 1 baz:1
  > 2 baz:2
  > 3 baz:3
  > 4 baz:4
  > 5
  > EOF
  $ hg debugsetparents 19 18
  $ hg --config extensions.legacyrepo=../legacyrepo.py  commit -m "baz:4"
  $ hg debugindexdot baz
  digraph G {
  	-1 -> 0
  	0 -> 1
  	1 -> 2
  	1 -> 2
  	2 -> 3
  	3 -> 4
  	2 -> 4
  }
  $ hg annotate baz
  17: 1 baz:1
  18: 2 baz:2
  19: 3 baz:3
  20: 4 baz:4
  16: 5

annotate clean file

  $ hg annotate -ncr "wdir()" foo
  11 472b18db256d : foo

annotate modified file

  $ echo foofoo >> foo
  $ hg annotate -r "wdir()" foo
  11 : foo
  20+: foofoo

  $ hg annotate -cr "wdir()" foo
  472b18db256d : foo
  b6bedd5477e7+: foofoo

  $ hg annotate -ncr "wdir()" foo
  11 472b18db256d : foo
  20 b6bedd5477e7+: foofoo

  $ hg annotate --debug -ncr "wdir()" foo
  11 472b18db256d1e8282064eab4bfdaf48cbfe83cd : foo
  20 b6bedd5477e797f25e568a6402d4697f3f895a72+: foofoo

  $ hg annotate -udr "wdir()" foo
  test Thu Jan 01 00:00:00 1970 +0000: foo
  test [A-Za-z0-9:+ ]+: foofoo (re)

  $ hg annotate -ncr "wdir()" -Tjson foo
  [
   {
    "lines": [{"line": "foo\n", "node": "472b18db256d1e8282064eab4bfdaf48cbfe83cd", "rev": 11}, {"line": "foofoo\n", "node": "ffffffffffffffffffffffffffffffffffffffff", "rev": 2147483647}],
    "path": "foo"
   }
  ]

annotate added file

  $ echo bar > bar
  $ hg add bar
  $ hg annotate -ncr "wdir()" bar
  20 b6bedd5477e7+: bar

annotate renamed file

  $ hg rename foo renamefoo2
  $ hg annotate -ncr "wdir()" renamefoo2
  11 472b18db256d : foo
  20 b6bedd5477e7+: foofoo

annotate missing file

  $ rm baz

  $ hg annotate -ncr "wdir()" baz
  abort: $TESTTMP\repo\baz: $ENOENT$ (windows !)
  abort: $ENOENT$: '$TESTTMP/repo/baz' (no-windows !)
  [255]

annotate removed file

  $ hg rm baz

  $ hg annotate -ncr "wdir()" baz
  abort: $TESTTMP\repo\baz: $ENOENT$ (windows !)
  abort: $ENOENT$: '$TESTTMP/repo/baz' (no-windows !)
  [255]

  $ hg revert --all --no-backup --quiet
  $ hg id -n
  20

Test followlines() revset; we usually check both followlines(pat, range) and
followlines(pat, range, descend=True) to make sure both give the same result
when they should.

  $ echo a >> foo
  $ hg ci -m 'foo: add a'
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:5)'
  16: baz:0
  19: baz:3
  20: baz:4
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:5, startrev=20)'
  16: baz:0
  19: baz:3
  20: baz:4
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:5, startrev=19)'
  16: baz:0
  19: baz:3
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:5, startrev=19, descend=True)'
  19: baz:3
  20: baz:4
  $ printf "0\n0\n" | cat - baz > baz1
  $ mv baz1 baz
  $ hg ci -m 'added two lines with 0'
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 5:7)'
  16: baz:0
  19: baz:3
  20: baz:4
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:5, descend=true, startrev=19)'
  19: baz:3
  20: baz:4
  $ echo 6 >> baz
  $ hg ci -m 'added line 8'
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 5:7)'
  16: baz:0
  19: baz:3
  20: baz:4
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:5, startrev=19, descend=1)'
  19: baz:3
  20: baz:4
  $ sed 's/3/3+/' baz > baz.new
  $ mv baz.new baz
  $ hg ci -m 'baz:3->3+'
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 5:7, descend=0)'
  16: baz:0
  19: baz:3
  20: baz:4
  24: baz:3->3+
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:5, startrev=17, descend=True)'
  19: baz:3
  20: baz:4
  24: baz:3->3+
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 1:2, descend=false)'
  22: added two lines with 0

file patterns are okay
  $ hg log -T '{rev}: {desc}\n' -r 'followlines("path:baz", 1:2)'
  22: added two lines with 0

renames are followed
  $ hg mv baz qux
  $ sed 's/4/4+/' qux > qux.new
  $ mv qux.new qux
  $ hg ci -m 'qux:4->4+'
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(qux, 5:7)'
  16: baz:0
  19: baz:3
  20: baz:4
  24: baz:3->3+
  25: qux:4->4+

but are missed when following children
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 5:7, startrev=22, descend=True)'
  24: baz:3->3+

merge
  $ hg up 24 --quiet
  $ echo 7 >> baz
  $ hg ci -m 'one more line, out of line range'
  created new head
  $ sed 's/3+/3-/' baz > baz.new
  $ mv baz.new baz
  $ hg ci -m 'baz:3+->3-'
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 5:7)'
  16: baz:0
  19: baz:3
  20: baz:4
  24: baz:3->3+
  27: baz:3+->3-
  $ hg merge 25
  merging baz and qux to qux
  warning: conflicts while merging qux! (edit, then use 'hg resolve --mark')
  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]
  $ cat qux
  0
  0
  1 baz:1
  2 baz:2
  <<<<<<< working copy: 863de62655ef - test: baz:3+->3-
  3- baz:3
  4 baz:4
  ||||||| base
  3+ baz:3
  4 baz:4
  =======
  3+ baz:3
  4+ baz:4
  >>>>>>> merge rev:    cb8df70ae185 - test: qux:4->4+
  5
  6
  7
  $ cat > qux <<EOF
  > 0
  > 0
  > 1 baz:1
  > 2 baz:2
  > 3- baz:3
  > 4 baz:4
  > 5
  > 6
  > 7
  > EOF
  $ hg resolve --mark -q
  $ rm qux.orig
  $ hg ci -m merge
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(qux, 5:7)'
  16: baz:0
  19: baz:3
  20: baz:4
  24: baz:3->3+
  25: qux:4->4+
  27: baz:3+->3-
  28: merge
  $ hg up 25 --quiet
  $ hg merge 27
  merging qux and baz to qux
  warning: conflicts while merging qux! (edit, then use 'hg resolve --mark')
  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]
  $ cat qux
  0
  0
  1 baz:1
  2 baz:2
  <<<<<<< working copy: cb8df70ae185 - test: qux:4->4+
  3+ baz:3
  4+ baz:4
  ||||||| base
  3+ baz:3
  4 baz:4
  =======
  3- baz:3
  4 baz:4
  >>>>>>> merge rev:    863de62655ef - test: baz:3+->3-
  5
  6
  7
  $ cat > qux <<EOF
  > 0
  > 0
  > 1 baz:1
  > 2 baz:2
  > 3+ baz:3
  > 4+ baz:4
  > 5
  > 6
  > EOF
  $ hg resolve --mark -q
  $ rm qux.orig
  $ hg ci -m 'merge from other side'
  created new head
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(qux, 5:7)'
  16: baz:0
  19: baz:3
  20: baz:4
  24: baz:3->3+
  25: qux:4->4+
  27: baz:3+->3-
  29: merge from other side
  $ hg up 24 --quiet

we are missing the branch with rename when following children
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 5:7, startrev=26, descend=True)'
  27: baz:3+->3-

we follow all branches in descending direction
  $ hg up 23 --quiet
  $ sed 's/3/+3/' baz > baz.new
  $ mv baz.new baz
  $ hg ci -m 'baz:3->+3'
  created new head
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 2:5, startrev=16, descend=True)' --graph
  @  30: baz:3->+3
  :
  : o  27: baz:3+->3-
  : :
  : o  24: baz:3->3+
  :/
  o    20: baz:4
  |\
  | o  19: baz:3
  |/
  o  18: baz:2
  :
  o  16: baz:0
  |
  ~

Issue5595: on a merge changeset with different line ranges depending on
parent, be conservative and use the surrounding interval to avoid loosing
track of possible further descendants in specified range.

  $ hg up 23 --quiet
  $ hg cat baz -r 24
  0
  0
  1 baz:1
  2 baz:2
  3+ baz:3
  4 baz:4
  5
  6
  $ cat > baz << EOF
  > 0
  > 0
  > a
  > b
  > 3+ baz:3
  > 4 baz:4
  > y
  > z
  > EOF
  $ hg ci -m 'baz: mostly rewrite with some content from 24'
  created new head
  $ hg merge --tool :merge-other 24
  merging baz
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m 'merge forgetting about baz rewrite'
  $ cat > baz << EOF
  > 0
  > 0
  > 1 baz:1
  > 2+ baz:2
  > 3+ baz:3
  > 4 baz:4
  > 5
  > 6
  > EOF
  $ hg ci -m 'baz: narrow change (2->2+)'
  $ hg log -T '{rev}: {desc}\n' -r 'followlines(baz, 3:4, startrev=20, descend=True)' --graph
  @  33: baz: narrow change (2->2+)
  |
  o    32: merge forgetting about baz rewrite
  |\
  | o  31: baz: mostly rewrite with some content from 24
  | :
  | : o  30: baz:3->+3
  | :/
  +---o  27: baz:3+->3-
  | :
  o :  24: baz:3->3+
  :/
  o    20: baz:4
  |\
  ~ ~

An integer as a line range, which is parsed as '1:1'

  $ hg log -r 'followlines(baz, 1)'
  changeset:   22:2174d0bf352a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     added two lines with 0
  

check error cases
  $ hg up 24 --quiet
  $ hg log -r 'followlines()'
  hg: parse error: followlines takes at least 1 positional arguments
  [255]
  $ hg log -r 'followlines(baz)'
  hg: parse error: followlines requires a line range
  [255]
  $ hg log -r 'followlines(baz, x)'
  hg: parse error: followlines expects a line number or a range
  [255]
  $ hg log -r 'followlines(baz, 1:2, startrev=desc("b"))'
  hg: parse error: followlines expects exactly one revision
  [255]
  $ hg log -r 'followlines("glob:*", 1:2)'
  hg: parse error: followlines expects exactly one file
  [255]
  $ hg log -r 'followlines(baz, 1:)'
  hg: parse error: line range bounds must be integers
  [255]
  $ hg log -r 'followlines(baz, :1)'
  hg: parse error: line range bounds must be integers
  [255]
  $ hg log -r 'followlines(baz, x:4)'
  hg: parse error: line range bounds must be integers
  [255]
  $ hg log -r 'followlines(baz, 5:4)'
  hg: parse error: line range must be positive
  [255]
  $ hg log -r 'followlines(baz, 0:4)'
  hg: parse error: fromline must be strictly positive
  [255]
  $ hg log -r 'followlines(baz, 2:40)'
  abort: line range exceeds file size
  [255]
  $ hg log -r 'followlines(baz, 2:4, startrev=20, descend=[1])'
  hg: parse error at 43: not a prefix: [
  (followlines(baz, 2:4, startrev=20, descend=[1])
                                              ^ here)
  [255]
  $ hg log -r 'followlines(baz, 2:4, startrev=20, descend=a)'
  hg: parse error: descend argument must be a boolean
  [255]

Test empty annotate output

  $ printf '\0' > binary
  $ touch empty
  $ hg ci -qAm 'add binary and empty files'

  $ hg annotate binary empty
  binary: binary file

  $ hg annotate -Tjson binary empty
  [
   {
    "path": "binary"
   },
   {
    "lines": [],
    "path": "empty"
   }
  ]

Test annotate with whitespace options

  $ cd ..
  $ hg init repo-ws
  $ cd repo-ws
  $ cat > a <<EOF
  > aa
  > 
  > b b
  > EOF
  $ hg ci -Am "adda"
  adding a
  $ sed 's/EOL$//g' > a <<EOF
  > a  a
  > 
  >  EOL
  > b  b
  > EOF
  $ hg ci -m "changea"

Annotate with no option

  $ hg annotate a
  1: a  a
  0: 
  1:  
  1: b  b

Annotate with --ignore-space-change

  $ hg annotate --ignore-space-change a
  1: a  a
  1: 
  0:  
  0: b  b

Annotate with --ignore-all-space

  $ hg annotate --ignore-all-space a
  0: a  a
  0: 
  1:  
  0: b  b

Annotate with --ignore-blank-lines (similar to no options case)

  $ hg annotate --ignore-blank-lines a
  1: a  a
  0: 
  1:  
  1: b  b

  $ cd ..

Annotate with orphaned CR (issue5798)
-------------------------------------

  $ hg init repo-cr
  $ cd repo-cr

  $ cat <<'EOF' >> "$TESTTMP/substcr.py"
  > import sys
  > from mercurial.utils import procutil
  > procutil.setbinary(sys.stdin)
  > procutil.setbinary(sys.stdout)
  > stdin = getattr(sys.stdin, 'buffer', sys.stdin)
  > stdout = getattr(sys.stdout, 'buffer', sys.stdout)
  > stdout.write(stdin.read().replace(b'\r', b'[CR]'))
  > EOF

  >>> with open('a', 'wb') as f:
  ...     f.write(b'0a\r0b\r\n0c\r0d\r\n0e\n0f\n0g') and None
  $ hg ci -qAm0
  >>> with open('a', 'wb') as f:
  ...     f.write(b'0a\r0b\r\n1c\r1d\r\n0e\n1f\n0g') and None
  $ hg ci -m1

  $ hg annotate -r0 a | "$PYTHON" "$TESTTMP/substcr.py"
  0: 0a[CR]0b[CR]
  0: 0c[CR]0d[CR]
  0: 0e
  0: 0f
  0: 0g
  $ hg annotate -r1 a | "$PYTHON" "$TESTTMP/substcr.py"
  0: 0a[CR]0b[CR]
  1: 1c[CR]1d[CR]
  0: 0e
  1: 1f
  0: 0g

  $ cd ..

Annotate with linkrev pointing to another branch
------------------------------------------------

create history with a filerev whose linkrev points to another branch

  $ hg init branchedlinkrev
  $ cd branchedlinkrev
  $ echo A > a
  $ hg commit -Am 'contentA'
  adding a
  $ echo B >> a
  $ hg commit -m 'contentB'
  $ hg up --rev 'desc(contentA)'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo unrelated > unrelated
  $ hg commit -Am 'unrelated'
  adding unrelated
  created new head
  $ hg graft -r 'desc(contentB)'
  grafting 1:fd27c222e3e6 "contentB"
  $ echo C >> a
  $ hg commit -m 'contentC'
  $ echo W >> a
  $ hg log -G
  @  changeset:   4:072f1e8df249
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     contentC
  |
  o  changeset:   3:ff38df03cc4b
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     contentB
  |
  o  changeset:   2:62aaf3f6fc06
  |  parent:      0:f0932f74827e
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     unrelated
  |
  | o  changeset:   1:fd27c222e3e6
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     contentB
  |
  o  changeset:   0:f0932f74827e
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     contentA
  

Annotate should list ancestor of starting revision only

  $ hg annotate a
  0: A
  3: B
  4: C

  $ hg annotate a -r 'wdir()'
  0 : A
  3 : B
  4 : C
  4+: W

Even when the starting revision is the linkrev-shadowed one:

  $ hg annotate a -r 3
  0: A
  3: B

  $ cd ..

Issue5360: Deleted chunk in p1 of a merge changeset

  $ hg init repo-5360
  $ cd repo-5360
  $ echo 1 > a
  $ hg commit -A a -m 1
  $ echo 2 >> a
  $ hg commit -m 2
  $ echo a > a
  $ hg commit -m a
  $ hg update '.^' -q
  $ echo 3 >> a
  $ hg commit -m 3 -q
  $ hg merge 2 -q
  warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
  [1]
  $ cat a
  <<<<<<< working copy: 0a068f0261cf - test: 3
  1
  2
  3
  ||||||| base
  1
  2
  =======
  a
  >>>>>>> merge rev:    9409851bc20a - test: a
  $ cat > a << EOF
  > b
  > 1
  > 2
  > 3
  > a
  > EOF
  $ hg resolve --mark -q
  $ rm a.orig
  $ hg commit -m m
  $ hg annotate a
  4: b
  0: 1
  1: 2
  3: 3
  2: a

  $ cd ..