view tests/test-hgweb-json.t @ 44363:f7459da77f23

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 serve

  $ request() {
  >   get-with-headers.py --json localhost:$HGPORT "$1"
  > }

  $ hg init test
  $ cd test
  $ mkdir da
  $ echo foo > da/foo
  $ echo foo > foo
  $ hg -q ci -A -m initial
  $ echo bar > foo
  $ hg ci -m 'modify foo'
  $ echo bar > da/foo
  $ hg ci -m 'modify da/foo'
  $ hg bookmark bookmark1
  $ hg up default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (leaving bookmark bookmark1)
  $ hg mv foo foo-new
  $ hg commit -m 'move foo'
  $ hg tag -m 'create tag' tag1
  $ hg phase --public -r .
  $ echo baz > da/foo
  $ hg commit -m 'another commit to da/foo'
  $ hg tag -m 'create tag2' tag2
  $ hg bookmark bookmark2
  $ hg -q up -r 0
  $ hg -q branch test-branch
  $ echo branch > foo
  $ hg commit -m 'create test branch'
  $ echo branch_commit_2 > foo
  $ hg commit -m 'another commit in test-branch'
  $ hg -q up default
  $ hg merge --tool :local test-branch
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg commit -m 'merge test-branch into default'

  $ hg log -G
  @    changeset:   9:cc725e08502a
  |\   tag:         tip
  | |  parent:      6:ceed296fe500
  | |  parent:      8:ed66c30e87eb
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     merge test-branch into default
  | |
  | o  changeset:   8:ed66c30e87eb
  | |  branch:      test-branch
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     another commit in test-branch
  | |
  | o  changeset:   7:6ab967a8ab34
  | |  branch:      test-branch
  | |  parent:      0:06e557f3edf6
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     create test branch
  | |
  o |  changeset:   6:ceed296fe500
  | |  bookmark:    bookmark2
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     create tag2
  | |
  o |  changeset:   5:f2890a05fea4
  | |  tag:         tag2
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     another commit to da/foo
  | |
  o |  changeset:   4:93a8ce14f891
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     create tag
  | |
  o |  changeset:   3:78896eb0e102
  | |  tag:         tag1
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     move foo
  | |
  o |  changeset:   2:8d7c456572ac
  | |  bookmark:    bookmark1
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     modify da/foo
  | |
  o |  changeset:   1:f8bbb9024b10
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     modify foo
  |
  o  changeset:   0:06e557f3edf6
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     initial
  

  $ echo '[web]' >> .hg/hgrc
  $ echo 'allow-archive = bz2' >> .hg/hgrc
  $ hg serve -p $HGPORT -d --pid-file=hg.pid -A access.log -E error.log
  $ cat hg.pid >> $DAEMON_PIDS

(Try to keep these in roughly the order they are defined in webcommands.py)

(log is handled by filelog/ and changelog/ - ignore it)

(rawfile/ doesn't use templating - nothing to test)

file/{revision}/{path} shows file revision

  $ request json-file/78896eb0e102/foo-new
  200 Script output follows
  
  {
    "bookmarks": [],
    "branch": "default",
    "date": [
      0.0,
      0
    ],
    "desc": "move foo",
    "lines": [
      {
        "line": "bar\n"
      }
    ],
    "node": "78896eb0e102174ce9278438a95e12543e4367a7",
    "parents": [
      "f8bbb9024b10f93cdbb8d940337398291d40dea8"
    ],
    "path": "foo-new",
    "phase": "public",
    "tags": [
      "tag1"
    ],
    "user": "test"
  }

file/{revision} shows root directory info

  $ request json-file/cc725e08502a
  200 Script output follows
  
  {
    "abspath": "/",
    "bookmarks": [],
    "directories": [
      {
        "abspath": "/da",
        "basename": "da",
        "emptydirs": ""
      }
    ],
    "files": [
      {
        "abspath": ".hgtags",
        "basename": ".hgtags",
        "date": [
          0.0,
          0
        ],
        "flags": "",
        "size": 92
      },
      {
        "abspath": "foo-new",
        "basename": "foo-new",
        "date": [
          0.0,
          0
        ],
        "flags": "",
        "size": 4
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
    "tags": [
      "tip"
    ]
  }

changelog/ shows information about several changesets

  $ request json-changelog
  200 Script output follows
  
  {
    "changeset_count": 10,
    "changesets": [
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "merge test-branch into default",
        "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
        "parents": [
          "ceed296fe500c3fac9541e31dad860cb49c89e45",
          "ed66c30e87eb65337c05a4229efaa5f1d5285a90"
        ],
        "phase": "draft",
        "tags": [
          "tip"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit in test-branch",
        "node": "ed66c30e87eb65337c05a4229efaa5f1d5285a90",
        "parents": [
          "6ab967a8ab3489227a83f80e920faa039a71819f"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "create test branch",
        "node": "6ab967a8ab3489227a83f80e920faa039a71819f",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark2"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag2",
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45",
        "parents": [
          "f2890a05fea49bfaf9fb27ed5490894eba32da78"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit to da/foo",
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "parents": [
          "93a8ce14f89156426b7fa981af8042da53f03aa0"
        ],
        "phase": "draft",
        "tags": [
          "tag2"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag",
        "node": "93a8ce14f89156426b7fa981af8042da53f03aa0",
        "parents": [
          "78896eb0e102174ce9278438a95e12543e4367a7"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "move foo",
        "node": "78896eb0e102174ce9278438a95e12543e4367a7",
        "parents": [
          "8d7c456572acf3557e8ed8a07286b10c408bcec5"
        ],
        "phase": "public",
        "tags": [
          "tag1"
        ],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark1"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify da/foo",
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5",
        "parents": [
          "f8bbb9024b10f93cdbb8d940337398291d40dea8"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify foo",
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7"
  }

changelog/{revision} shows information starting at a specific changeset

  $ request json-changelog/f8bbb9024b10
  200 Script output follows
  
  {
    "changeset_count": 10,
    "changesets": [
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify foo",
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ],
    "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8"
  }

shortlog/ shows information about a set of changesets

  $ request json-shortlog
  200 Script output follows
  
  {
    "changeset_count": 10,
    "changesets": [
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "merge test-branch into default",
        "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
        "parents": [
          "ceed296fe500c3fac9541e31dad860cb49c89e45",
          "ed66c30e87eb65337c05a4229efaa5f1d5285a90"
        ],
        "phase": "draft",
        "tags": [
          "tip"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit in test-branch",
        "node": "ed66c30e87eb65337c05a4229efaa5f1d5285a90",
        "parents": [
          "6ab967a8ab3489227a83f80e920faa039a71819f"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "create test branch",
        "node": "6ab967a8ab3489227a83f80e920faa039a71819f",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark2"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag2",
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45",
        "parents": [
          "f2890a05fea49bfaf9fb27ed5490894eba32da78"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit to da/foo",
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "parents": [
          "93a8ce14f89156426b7fa981af8042da53f03aa0"
        ],
        "phase": "draft",
        "tags": [
          "tag2"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag",
        "node": "93a8ce14f89156426b7fa981af8042da53f03aa0",
        "parents": [
          "78896eb0e102174ce9278438a95e12543e4367a7"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "move foo",
        "node": "78896eb0e102174ce9278438a95e12543e4367a7",
        "parents": [
          "8d7c456572acf3557e8ed8a07286b10c408bcec5"
        ],
        "phase": "public",
        "tags": [
          "tag1"
        ],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark1"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify da/foo",
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5",
        "parents": [
          "f8bbb9024b10f93cdbb8d940337398291d40dea8"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify foo",
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7"
  }

shortlog is displayed by default (issue5978)

  $ request '?style=json'
  200 Script output follows
  
  {
    "changeset_count": 10,
    "changesets": [
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "merge test-branch into default",
        "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
        "parents": [
          "ceed296fe500c3fac9541e31dad860cb49c89e45",
          "ed66c30e87eb65337c05a4229efaa5f1d5285a90"
        ],
        "phase": "draft",
        "tags": [
          "tip"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit in test-branch",
        "node": "ed66c30e87eb65337c05a4229efaa5f1d5285a90",
        "parents": [
          "6ab967a8ab3489227a83f80e920faa039a71819f"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "create test branch",
        "node": "6ab967a8ab3489227a83f80e920faa039a71819f",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark2"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag2",
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45",
        "parents": [
          "f2890a05fea49bfaf9fb27ed5490894eba32da78"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit to da/foo",
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "parents": [
          "93a8ce14f89156426b7fa981af8042da53f03aa0"
        ],
        "phase": "draft",
        "tags": [
          "tag2"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag",
        "node": "93a8ce14f89156426b7fa981af8042da53f03aa0",
        "parents": [
          "78896eb0e102174ce9278438a95e12543e4367a7"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "move foo",
        "node": "78896eb0e102174ce9278438a95e12543e4367a7",
        "parents": [
          "8d7c456572acf3557e8ed8a07286b10c408bcec5"
        ],
        "phase": "public",
        "tags": [
          "tag1"
        ],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark1"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify da/foo",
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5",
        "parents": [
          "f8bbb9024b10f93cdbb8d940337398291d40dea8"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify foo",
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7"
  }

changeset/ renders the tip changeset

  $ request json-rev
  200 Script output follows
  
  {
    "bookmarks": [],
    "branch": "default",
    "date": [
      0.0,
      0
    ],
    "desc": "merge test-branch into default",
    "diff": [],
    "files": [
      {
        "file": "foo-new",
        "status": "modified"
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
    "parents": [
      "ceed296fe500c3fac9541e31dad860cb49c89e45",
      "ed66c30e87eb65337c05a4229efaa5f1d5285a90"
    ],
    "phase": "draft",
    "tags": [
      "tip"
    ],
    "user": "test"
  }

changeset/{revision} shows tags

  $ request json-rev/78896eb0e102
  200 Script output follows
  
  {
    "bookmarks": [],
    "branch": "default",
    "date": [
      0.0,
      0
    ],
    "desc": "move foo",
    "diff": [
      {
        "blockno": 1,
        "lines": [
          {
            "l": "--- a/foo\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 1,
            "t": "-"
          },
          {
            "l": "+++ /dev/null\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 2,
            "t": "+"
          },
          {
            "l": "@@ -1,1 +0,0 @@\n",
            "n": 3,
            "t": "@"
          },
          {
            "l": "-bar\n",
            "n": 4,
            "t": "-"
          }
        ]
      },
      {
        "blockno": 2,
        "lines": [
          {
            "l": "--- /dev/null\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 1,
            "t": "-"
          },
          {
            "l": "+++ b/foo-new\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 2,
            "t": "+"
          },
          {
            "l": "@@ -0,0 +1,1 @@\n",
            "n": 3,
            "t": "@"
          },
          {
            "l": "+bar\n",
            "n": 4,
            "t": "+"
          }
        ]
      }
    ],
    "files": [
      {
        "file": "foo",
        "status": "removed"
      },
      {
        "file": "foo-new",
        "status": "added"
      }
    ],
    "node": "78896eb0e102174ce9278438a95e12543e4367a7",
    "parents": [
      "8d7c456572acf3557e8ed8a07286b10c408bcec5"
    ],
    "phase": "public",
    "tags": [
      "tag1"
    ],
    "user": "test"
  }

changeset/{revision} shows bookmarks

  $ request json-rev/8d7c456572ac
  200 Script output follows
  
  {
    "bookmarks": [
      "bookmark1"
    ],
    "branch": "default",
    "date": [
      0.0,
      0
    ],
    "desc": "modify da/foo",
    "diff": [
      {
        "blockno": 1,
        "lines": [
          {
            "l": "--- a/da/foo\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 1,
            "t": "-"
          },
          {
            "l": "+++ b/da/foo\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 2,
            "t": "+"
          },
          {
            "l": "@@ -1,1 +1,1 @@\n",
            "n": 3,
            "t": "@"
          },
          {
            "l": "-foo\n",
            "n": 4,
            "t": "-"
          },
          {
            "l": "+bar\n",
            "n": 5,
            "t": "+"
          }
        ]
      }
    ],
    "files": [
      {
        "file": "da/foo",
        "status": "modified"
      }
    ],
    "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5",
    "parents": [
      "f8bbb9024b10f93cdbb8d940337398291d40dea8"
    ],
    "phase": "public",
    "tags": [],
    "user": "test"
  }

changeset/{revision} shows branches

  $ request json-rev/6ab967a8ab34
  200 Script output follows
  
  {
    "bookmarks": [],
    "branch": "test-branch",
    "date": [
      0.0,
      0
    ],
    "desc": "create test branch",
    "diff": [
      {
        "blockno": 1,
        "lines": [
          {
            "l": "--- a/foo\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 1,
            "t": "-"
          },
          {
            "l": "+++ b/foo\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 2,
            "t": "+"
          },
          {
            "l": "@@ -1,1 +1,1 @@\n",
            "n": 3,
            "t": "@"
          },
          {
            "l": "-foo\n",
            "n": 4,
            "t": "-"
          },
          {
            "l": "+branch\n",
            "n": 5,
            "t": "+"
          }
        ]
      }
    ],
    "files": [
      {
        "file": "foo",
        "status": "modified"
      }
    ],
    "node": "6ab967a8ab3489227a83f80e920faa039a71819f",
    "parents": [
      "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
    ],
    "phase": "draft",
    "tags": [],
    "user": "test"
  }

manifest/{revision}/{path} shows info about a directory at a revision

  $ request json-manifest/06e557f3edf6/
  200 Script output follows
  
  {
    "abspath": "/",
    "bookmarks": [],
    "directories": [
      {
        "abspath": "/da",
        "basename": "da",
        "emptydirs": ""
      }
    ],
    "files": [
      {
        "abspath": "foo",
        "basename": "foo",
        "date": [
          0.0,
          0
        ],
        "flags": "",
        "size": 4
      }
    ],
    "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
    "tags": []
  }

tags/ shows tags info

  $ request json-tags
  200 Script output follows
  
  {
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
    "tags": [
      {
        "date": [
          0.0,
          0
        ],
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "tag": "tag2"
      },
      {
        "date": [
          0.0,
          0
        ],
        "node": "78896eb0e102174ce9278438a95e12543e4367a7",
        "tag": "tag1"
      }
    ]
  }

bookmarks/ shows bookmarks info

  $ request json-bookmarks
  200 Script output follows
  
  {
    "bookmarks": [
      {
        "bookmark": "bookmark2",
        "date": [
          0.0,
          0
        ],
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45"
      },
      {
        "bookmark": "bookmark1",
        "date": [
          0.0,
          0
        ],
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5"
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7"
  }

branches/ shows branches info

  $ request json-branches
  200 Script output follows
  
  {
    "branches": [
      {
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
        "status": "open"
      },
      {
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "node": "ed66c30e87eb65337c05a4229efaa5f1d5285a90",
        "status": "inactive"
      }
    ]
  }

summary/ shows a summary of repository state

  $ request json-summary
  200 Script output follows
  
  {
    "archives": [
      {
        "extension": ".tar.bz2",
        "node": "tip",
        "type": "bz2",
        "url": "http://*:$HGPORT/archive/tip.tar.bz2" (glob)
      }
    ],
    "bookmarks": [
      {
        "bookmark": "bookmark2",
        "date": [
          0.0,
          0
        ],
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45"
      },
      {
        "bookmark": "bookmark1",
        "date": [
          0.0,
          0
        ],
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5"
      }
    ],
    "branches": [
      {
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
        "status": "open"
      },
      {
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "node": "ed66c30e87eb65337c05a4229efaa5f1d5285a90",
        "status": "inactive"
      }
    ],
    "labels": [],
    "lastchange": [
      0.0,
      0
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
    "shortlog": [
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "merge test-branch into default",
        "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
        "parents": [
          "ceed296fe500c3fac9541e31dad860cb49c89e45",
          "ed66c30e87eb65337c05a4229efaa5f1d5285a90"
        ],
        "phase": "draft",
        "tags": [
          "tip"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit in test-branch",
        "node": "ed66c30e87eb65337c05a4229efaa5f1d5285a90",
        "parents": [
          "6ab967a8ab3489227a83f80e920faa039a71819f"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "create test branch",
        "node": "6ab967a8ab3489227a83f80e920faa039a71819f",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark2"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag2",
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45",
        "parents": [
          "f2890a05fea49bfaf9fb27ed5490894eba32da78"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit to da/foo",
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "parents": [
          "93a8ce14f89156426b7fa981af8042da53f03aa0"
        ],
        "phase": "draft",
        "tags": [
          "tag2"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag",
        "node": "93a8ce14f89156426b7fa981af8042da53f03aa0",
        "parents": [
          "78896eb0e102174ce9278438a95e12543e4367a7"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "move foo",
        "node": "78896eb0e102174ce9278438a95e12543e4367a7",
        "parents": [
          "8d7c456572acf3557e8ed8a07286b10c408bcec5"
        ],
        "phase": "public",
        "tags": [
          "tag1"
        ],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark1"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify da/foo",
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5",
        "parents": [
          "f8bbb9024b10f93cdbb8d940337398291d40dea8"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify foo",
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ],
    "tags": [
      {
        "date": [
          0.0,
          0
        ],
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "tag": "tag2"
      },
      {
        "date": [
          0.0,
          0
        ],
        "node": "78896eb0e102174ce9278438a95e12543e4367a7",
        "tag": "tag1"
      }
    ]
  }

  $ request json-changelog?rev=create
  200 Script output follows
  
  {
    "entries": [
      {
        "bookmarks": [],
        "branch": "test-branch",
        "date": [
          0.0,
          0
        ],
        "desc": "create test branch",
        "node": "6ab967a8ab3489227a83f80e920faa039a71819f",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark2"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag2",
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45",
        "parents": [
          "f2890a05fea49bfaf9fb27ed5490894eba32da78"
        ],
        "phase": "draft",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "create tag",
        "node": "93a8ce14f89156426b7fa981af8042da53f03aa0",
        "parents": [
          "78896eb0e102174ce9278438a95e12543e4367a7"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
    "query": "create"
  }

filediff/{revision}/{path} shows changes to a file in a revision

  $ request json-diff/f8bbb9024b10/foo
  200 Script output follows
  
  {
    "author": "test",
    "children": [],
    "date": [
      0.0,
      0
    ],
    "desc": "modify foo",
    "diff": [
      {
        "blockno": 1,
        "lines": [
          {
            "l": "--- a/foo\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 1,
            "t": "-"
          },
          {
            "l": "+++ b/foo\tThu Jan 01 00:00:00 1970 +0000\n",
            "n": 2,
            "t": "+"
          },
          {
            "l": "@@ -1,1 +1,1 @@\n",
            "n": 3,
            "t": "@"
          },
          {
            "l": "-foo\n",
            "n": 4,
            "t": "-"
          },
          {
            "l": "+bar\n",
            "n": 5,
            "t": "+"
          }
        ]
      }
    ],
    "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
    "parents": [
      "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
    ],
    "path": "foo"
  }

comparison/{revision}/{path} shows information about before and after for a file

  $ request json-comparison/f8bbb9024b10/foo
  200 Script output follows
  
  {
    "author": "test",
    "children": [],
    "comparison": [
      {
        "lines": [
          {
            "ll": "foo",
            "ln": 1,
            "rl": "bar",
            "rn": 1,
            "t": "replace"
          }
        ]
      }
    ],
    "date": [
      0.0,
      0
    ],
    "desc": "modify foo",
    "leftnode": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
    "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
    "parents": [
      "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
    ],
    "path": "foo",
    "rightnode": "f8bbb9024b10f93cdbb8d940337398291d40dea8"
  }

annotate/{revision}/{path} shows annotations for each line

  $ request json-annotate/f8bbb9024b10/foo
  200 Script output follows
  
  {
    "abspath": "foo",
    "annotate": [
      {
        "abspath": "foo",
        "author": "test",
        "desc": "modify foo",
        "line": "bar\n",
        "lineno": 1,
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "revdate": [
          0.0,
          0
        ],
        "targetline": 1
      }
    ],
    "author": "test",
    "children": [],
    "date": [
      0.0,
      0
    ],
    "desc": "modify foo",
    "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
    "parents": [
      "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
    ],
    "permissions": ""
  }

filelog/{revision}/{path} shows history of a single file

  $ request json-filelog/f8bbb9024b10/foo
  200 Script output follows
  
  {
    "entries": [
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify foo",
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ]
  }

  $ request json-filelog/cc725e08502a/da/foo
  200 Script output follows
  
  {
    "entries": [
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "another commit to da/foo",
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "parents": [
          "8d7c456572acf3557e8ed8a07286b10c408bcec5"
        ],
        "phase": "draft",
        "tags": [
          "tag2"
        ],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark1"
        ],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "modify da/foo",
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "tags": [],
        "user": "test"
      }
    ]
  }

(archive/ doesn't use templating, so ignore it)

(static/ doesn't use templating, so ignore it)

graph/ shows information that can be used to render a graph of the DAG

  $ request json-graph
  200 Script output follows
  
  {
    "changeset_count": 10,
    "changesets": [
      {
        "bookmarks": [],
        "branch": "default",
        "col": 0,
        "color": 1,
        "date": [
          0.0,
          0
        ],
        "desc": "merge test-branch into default",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7",
        "parents": [
          "ceed296fe500c3fac9541e31dad860cb49c89e45",
          "ed66c30e87eb65337c05a4229efaa5f1d5285a90"
        ],
        "phase": "draft",
        "row": 0,
        "tags": [
          "tip"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "col": 1,
        "color": 2,
        "date": [
          0.0,
          0
        ],
        "desc": "another commit in test-branch",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "ed66c30e87eb65337c05a4229efaa5f1d5285a90",
        "parents": [
          "6ab967a8ab3489227a83f80e920faa039a71819f"
        ],
        "phase": "draft",
        "row": 1,
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "test-branch",
        "col": 1,
        "color": 2,
        "date": [
          0.0,
          0
        ],
        "desc": "create test branch",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "6ab967a8ab3489227a83f80e920faa039a71819f",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "draft",
        "row": 2,
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark2"
        ],
        "branch": "default",
        "col": 0,
        "color": 1,
        "date": [
          0.0,
          0
        ],
        "desc": "create tag2",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "ceed296fe500c3fac9541e31dad860cb49c89e45",
        "parents": [
          "f2890a05fea49bfaf9fb27ed5490894eba32da78"
        ],
        "phase": "draft",
        "row": 3,
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "col": 0,
        "color": 1,
        "date": [
          0.0,
          0
        ],
        "desc": "another commit to da/foo",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "f2890a05fea49bfaf9fb27ed5490894eba32da78",
        "parents": [
          "93a8ce14f89156426b7fa981af8042da53f03aa0"
        ],
        "phase": "draft",
        "row": 4,
        "tags": [
          "tag2"
        ],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "col": 0,
        "color": 1,
        "date": [
          0.0,
          0
        ],
        "desc": "create tag",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "93a8ce14f89156426b7fa981af8042da53f03aa0",
        "parents": [
          "78896eb0e102174ce9278438a95e12543e4367a7"
        ],
        "phase": "public",
        "row": 5,
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "col": 0,
        "color": 1,
        "date": [
          0.0,
          0
        ],
        "desc": "move foo",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "78896eb0e102174ce9278438a95e12543e4367a7",
        "parents": [
          "8d7c456572acf3557e8ed8a07286b10c408bcec5"
        ],
        "phase": "public",
        "row": 6,
        "tags": [
          "tag1"
        ],
        "user": "test"
      },
      {
        "bookmarks": [
          "bookmark1"
        ],
        "branch": "default",
        "col": 0,
        "color": 1,
        "date": [
          0.0,
          0
        ],
        "desc": "modify da/foo",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 1,
            "width": -1
          }
        ],
        "node": "8d7c456572acf3557e8ed8a07286b10c408bcec5",
        "parents": [
          "f8bbb9024b10f93cdbb8d940337398291d40dea8"
        ],
        "phase": "public",
        "row": 7,
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "col": 0,
        "color": 1,
        "date": [
          0.0,
          0
        ],
        "desc": "modify foo",
        "edges": [
          {
            "bcolor": "",
            "col": 0,
            "color": 1,
            "nextcol": 0,
            "width": -1
          },
          {
            "bcolor": "",
            "col": 1,
            "color": 2,
            "nextcol": 0,
            "width": -1
          }
        ],
        "node": "f8bbb9024b10f93cdbb8d940337398291d40dea8",
        "parents": [
          "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e"
        ],
        "phase": "public",
        "row": 8,
        "tags": [],
        "user": "test"
      },
      {
        "bookmarks": [],
        "branch": "default",
        "col": 0,
        "color": 2,
        "date": [
          0.0,
          0
        ],
        "desc": "initial",
        "edges": [],
        "node": "06e557f3edf66faa1ccaba5dd8c203c21cc79f1e",
        "parents": [],
        "phase": "public",
        "row": 9,
        "tags": [],
        "user": "test"
      }
    ],
    "node": "cc725e08502a79dd1eda913760fbe06ed7a9abc7"
  }

help/ shows help topics

  $ request json-help
  200 Script output follows
  
  {
    "earlycommands": [
      {
        "summary": "abort an unfinished operation (EXPERIMENTAL)",
        "topic": "abort"
      },
      {
        "summary": "add the specified files on the next commit",
        "topic": "add"
      },
      {
        "summary": "show changeset information by line for each file",
        "topic": "annotate"
      },
      {
        "summary": "make a copy of an existing repository",
        "topic": "clone"
      },
      {
        "summary": "commit the specified files or all outstanding changes",
        "topic": "commit"
      },
      {
        "summary": "resumes an interrupted operation (EXPERIMENTAL)",
        "topic": "continue"
      },
      {
        "summary": "diff repository (or selected files)",
        "topic": "diff"
      },
      {
        "summary": "dump the header and diffs for one or more changesets",
        "topic": "export"
      },
      {
        "summary": "forget the specified files on the next commit",
        "topic": "forget"
      },
      {
        "summary": "create a new repository in the given directory",
        "topic": "init"
      },
      {
        "summary": "show revision history of entire repository or files",
        "topic": "log"
      },
      {
        "summary": "merge another revision into working directory",
        "topic": "merge"
      },
      {
        "summary": "pull changes from the specified source",
        "topic": "pull"
      },
      {
        "summary": "push changes to the specified destination",
        "topic": "push"
      },
      {
        "summary": "remove the specified files on the next commit",
        "topic": "remove"
      },
      {
        "summary": "start stand-alone webserver",
        "topic": "serve"
      },
      {
        "summary": "show changed files in the working directory",
        "topic": "status"
      },
      {
        "summary": "summarize working directory state",
        "topic": "summary"
      },
      {
        "summary": "update working directory (or switch revisions)",
        "topic": "update"
      }
    ],
    "othercommands": [
      {
        "summary": "add all new files, delete all missing files",
        "topic": "addremove"
      },
      {
        "summary": "create an unversioned archive of a repository revision",
        "topic": "archive"
      },
      {
        "summary": "reverse effect of earlier changeset",
        "topic": "backout"
      },
      {
        "summary": "subdivision search of changesets",
        "topic": "bisect"
      },
      {
        "summary": "create a new bookmark or list existing bookmarks",
        "topic": "bookmarks"
      },
      {
        "summary": "set or show the current branch name",
        "topic": "branch"
      },
      {
        "summary": "list repository named branches",
        "topic": "branches"
      },
      {
        "summary": "create a bundle file",
        "topic": "bundle"
      },
      {
        "summary": "output the current or given revision of files",
        "topic": "cat"
      },
      {
        "summary": "show combined config settings from all hgrc files",
        "topic": "config"
      },
      {
        "summary": "mark files as copied for the next commit",
        "topic": "copy"
      },
      {
        "summary": "list tracked files",
        "topic": "files"
      },
      {
        "summary": "copy changes from other branches onto the current branch",
        "topic": "graft"
      },
      {
        "summary": "search for a pattern in specified files",
        "topic": "grep"
      },
      {
        "summary": "show branch heads",
        "topic": "heads"
      },
      {
        "summary": "show help for a given topic or a help overview",
        "topic": "help"
      },
      {
        "summary": "identify the working directory or specified revision",
        "topic": "identify"
      },
      {
        "summary": "import an ordered set of patches",
        "topic": "import"
      },
      {
        "summary": "show new changesets found in source",
        "topic": "incoming"
      },
      {
        "summary": "output the current or given revision of the project manifest",
        "topic": "manifest"
      },
      {
        "summary": "show changesets not found in the destination",
        "topic": "outgoing"
      },
      {
        "summary": "show aliases for remote repositories",
        "topic": "paths"
      },
      {
        "summary": "set or show the current phase name",
        "topic": "phase"
      },
      {
        "summary": "roll back an interrupted transaction",
        "topic": "recover"
      },
      {
        "summary": "rename files; equivalent of copy + remove",
        "topic": "rename"
      },
      {
        "summary": "redo merges or set/view the merge status of files",
        "topic": "resolve"
      },
      {
        "summary": "restore files to their checkout state",
        "topic": "revert"
      },
      {
        "summary": "print the root (top) of the current working directory",
        "topic": "root"
      },
      {
        "summary": "save and set aside changes from the working directory",
        "topic": "shelve"
      },
      {
        "summary": "add one or more tags for the current or given revision",
        "topic": "tag"
      },
      {
        "summary": "list repository tags",
        "topic": "tags"
      },
      {
        "summary": "apply one or more bundle files",
        "topic": "unbundle"
      },
      {
        "summary": "restore a shelved change to the working directory",
        "topic": "unshelve"
      },
      {
        "summary": "verify the integrity of the repository",
        "topic": "verify"
      },
      {
        "summary": "output version and copyright information",
        "topic": "version"
      }
    ],
    "topics": [
      {
        "summary": "Bundle File Formats",
        "topic": "bundlespec"
      },
      {
        "summary": "Colorizing Outputs",
        "topic": "color"
      },
      {
        "summary": "Configuration Files",
        "topic": "config"
      },
      {
        "summary": "Date Formats",
        "topic": "dates"
      },
      {
        "summary": "Deprecated Features",
        "topic": "deprecated"
      },
      {
        "summary": "Diff Formats",
        "topic": "diffs"
      },
      {
        "summary": "Environment Variables",
        "topic": "environment"
      },
      {
        "summary": "Using Additional Features",
        "topic": "extensions"
      },
      {
        "summary": "Specifying File Sets",
        "topic": "filesets"
      },
      {
        "summary": "Command-line flags",
        "topic": "flags"
      },
      {
        "summary": "Glossary",
        "topic": "glossary"
      },
      {
        "summary": "Syntax for Mercurial Ignore Files",
        "topic": "hgignore"
      },
      {
        "summary": "Configuring hgweb",
        "topic": "hgweb"
      },
      {
        "summary": "Technical implementation topics",
        "topic": "internals"
      },
      {
        "summary": "Merge Tools",
        "topic": "merge-tools"
      },
      {
        "summary": "Pager Support",
        "topic": "pager"
      },
      {
        "summary": "File Name Patterns",
        "topic": "patterns"
      },
      {
        "summary": "Working with Phases",
        "topic": "phases"
      },
      {
        "summary": "Specifying Revisions",
        "topic": "revisions"
      },
      {
        "summary": "Using Mercurial from scripts and automation",
        "topic": "scripting"
      },
      {
        "summary": "Subrepositories",
        "topic": "subrepos"
      },
      {
        "summary": "Template Usage",
        "topic": "templating"
      },
      {
        "summary": "URL Paths",
        "topic": "urls"
      }
    ]
  }

help/{topic} shows an individual help topic

  $ request json-help/phases
  200 Script output follows
  
  {
    "rawdoc": "Working with Phases\n*", (glob)
    "topic": "phases"
  }

Error page shouldn't crash

  $ request json-changeset/deadbeef
  404 Not Found
  
  {
    "error": "unknown revision 'deadbeef'"
  }
  [1]

Commit message with Japanese Kanji 'Noh', which ends with '\x5c'

  $ echo foo >> da/foo
  >>> open('msg', 'wb').write(b'\x94\x5c\x0a') and None
  $ HGENCODING=cp932 hg ci -l msg

Commit message with null character

  $ echo foo >> da/foo
  >>> open('msg', 'wb').write(b'commit with null character: \0\n') and None
  $ hg ci -l msg
  $ rm msg

Stop and restart with HGENCODING=cp932

  $ killdaemons.py
  $ HGENCODING=cp932 hg serve -p $HGPORT -d --pid-file=hg.pid \
  > -A access.log -E error.log
  $ cat hg.pid >> $DAEMON_PIDS

Test json escape of multibyte characters

  $ request json-filelog/tip/da/foo?revcount=2 | grep '"desc":'
        "desc": "commit with null character: \u0000",
        "desc": "\u80fd",