$ cat >> $HGRCPATH << EOF

  > [extensions]

  > show =

  > EOF

  $ hg init repo0

  $ cd repo0

Command works on an empty repo

  $ hg show work

Single draft changeset shown

  $ echo 0 > foo

  $ hg -q commit -A -m 'commit 0'

  $ hg show work

  @  9f17 commit 0

Even when it isn't the wdir

  $ hg -q up null

  $ hg show work

  o  9f17 commit 0

Single changeset is still there when public because it is a head

  $ hg phase --public -r 0

  $ hg show work

  o  9f17 commit 0

A draft child will show both it and public parent

  $ hg -q up 0

  $ echo 1 > foo

  $ hg commit -m 'commit 1'

  $ hg show work

  @  181c commit 1

  o  9f17 commit 0

Multiple draft children will be shown

  $ echo 2 > foo

  $ hg commit -m 'commit 2'

  $ hg show work

  @  128c commit 2

  o  181c commit 1

  o  9f17 commit 0

Bumping first draft changeset to public will hide its parent

  $ hg phase --public -r 1

  $ hg show work

  @  128c commit 2

  o  181c commit 1

  ~

Multiple DAG heads will be shown

  $ hg -q up -r 1

  $ echo 3 > foo

  $ hg commit -m 'commit 3'

  created new head

  $ hg show work

  @  f0ab commit 3

  | o  128c commit 2

  |/

  o  181c commit 1

  ~

Even when wdir is something else

  $ hg -q up null

  $ hg show work

  o  f0ab commit 3

  | o  128c commit 2

  |/

  o  181c commit 1

  ~

Draft child shows public head (multiple heads)

  $ hg -q up 0

  $ echo 4 > foo

  $ hg commit -m 'commit 4'

  created new head

  $ hg show work

  @  668c commit 4

  | o  f0ab commit 3

  | | o  128c commit 2

  | |/

  | o  181c commit 1

  |/

  o  9f17 commit 0

  $ cd ..

Branch name appears in output

  $ hg init branches

  $ cd branches

  $ echo 0 > foo

  $ hg -q commit -A -m 'commit 0'

  $ echo 1 > foo

  $ hg commit -m 'commit 1'

  $ echo 2 > foo

  $ hg commit -m 'commit 2'

  $ hg phase --public -r .

  $ hg -q up -r 1

  $ hg branch mybranch

  marked working directory as branch mybranch

  (branches are permanent and global, did you want a bookmark?)

  $ echo 3 > foo

  $ hg commit -m 'commit 3'

  $ echo 4 > foo

  $ hg commit -m 'commit 4'

  $ hg show work

  @  f8dd (mybranch) commit 4

  o  90cf (mybranch) commit 3

  | o  128c commit 2

  |/

  o  181c commit 1

  ~

  $ cd ..

Bookmark name appears in output

  $ hg init bookmarks

  $ cd bookmarks

  $ echo 0 > foo

  $ hg -q commit -A -m 'commit 0'

  $ echo 1 > foo

  $ hg commit -m 'commit 1'

  $ echo 2 > foo

  $ hg commit -m 'commit 2'

  $ hg phase --public -r .

  $ hg bookmark @

  $ hg -q up -r 1

  $ echo 3 > foo

  $ hg commit -m 'commit 3'

  created new head

  $ echo 4 > foo

  $ hg commit -m 'commit 4'

  $ hg bookmark mybook

  $ hg show work

  @  cac8 (mybook) commit 4

  o  f0ab commit 3

  | o  128c (@) commit 2

  |/

  o  181c commit 1

  ~

  $ cd ..

Tags are rendered

  $ hg init tags

  $ cd tags

  $ echo 0 > foo

  $ hg -q commit -A -m 'commit 1'

  $ echo 1 > foo

  $ hg commit -m 'commit 2'

  $ hg tag 0.1

  $ hg phase --public -r .

  $ echo 2 > foo

  $ hg commit -m 'commit 3'

  $ hg tag 0.2

  $ hg show work

  @  3758 Added tag 0.2 for changeset 6379c25b76f1

  o  6379 (0.2) commit 3

  o  a2ad Added tag 0.1 for changeset 6a75536ea0b1

  ~

  $ cd ..

Multiple names on same changeset render properly

  $ hg init multiplenames

  $ cd multiplenames

  $ echo 0 > foo

  $ hg -q commit -A -m 'commit 1'

  $ hg phase --public -r .

  $ hg branch mybranch

  marked working directory as branch mybranch

  (branches are permanent and global, did you want a bookmark?)

  $ hg bookmark mybook

  $ echo 1 > foo

  $ hg commit -m 'commit 2'

  $ hg show work

  @  3483 (mybook) (mybranch) commit 2

  o  97fc commit 1

Multiple bookmarks on same changeset render properly

  $ hg book mybook2

  $ hg show work

  @  3483 (mybook mybook2) (mybranch) commit 2

  o  97fc commit 1

  $ cd ..

Extra namespaces are rendered

  $ hg init extranamespaces

  $ cd extranamespaces

  $ echo 0 > foo

  $ hg -q commit -A -m 'commit 1'

  $ hg phase --public -r .

  $ echo 1 > foo

  $ hg commit -m 'commit 2'

  $ echo 2 > foo

  $ hg commit -m 'commit 3'

  $ hg --config extensions.revnames=$TESTDIR/revnamesext.py show work

  @  32f3 (r2) commit 3

  o  6a75 (r1) commit 2

  o  97fc (r0) commit 1

Obsolescence information appears in labels.

  $ cat >> .hg/hgrc << EOF

  > [experimental]

  > evolution=createmarkers

  > EOF

  $ hg debugobsolete `hg log -r 'desc("commit 2")' -T "{node}"`

  1 new obsolescence markers

  obsoleted 1 changesets

  1 new orphan changesets

  $ hg show work --color=debug

  @  [log.changeset changeset.draft changeset.unstable instability.orphan|32f3] [log.description|commit 3]

  x  [log.changeset changeset.draft changeset.obsolete|6a75] [log.description|commit 2]

  ~

  $ cd ..

Prefix collision on hashes increases shortest node length

  $ hg init hashcollision

  $ cd hashcollision

  $ echo 0 > a

  $ hg -q commit -Am 0

  $ for i in 17 1057 2857 4025; do

  >   hg -q up 0

  >   echo $i > a

  >   hg -q commit -m $i

  >   echo 0 > a

  >   hg commit -m "$i commit 2"

  > done

  $ hg show work

  @  cfd04 4025 commit 2

  o  c562d 4025

  | o  08048 2857 commit 2

  | o  c5623 2857

  |/

  | o  6a6b6 1057 commit 2

  | o  c5625 1057

  |/

  | o  96b4e 17 commit 2

  | o  11424 17

  |/

  o  b4e73 0

  $ cd ..