Set up test environment.
  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > amend=
  > rebase=
  > strip=
  > [experimental]
  > evolution = createmarkers, allowunstable
  > [ui]
  > interactive = true
  > [amend]
  > safestrip = false
  > [hint]
  > ack-hint-ack = true
  > EOF
  $ mkcommit() {
  >    echo "${1}1" > "${1}1"
  >    echo "${1}2" > "${1}2"
  >    hg add "${1}1" "${1}2"
  >    hg ci -m "add ${1}1 and ${1}2"
  > }
  $ reset() {
  >   cd ..
  >   rm -rf repo
  >   hg init repo
  >   cd repo
  > }

Initialize repo.
  $ hg init repo && cd repo
  $ mkcommit a
  $ mkcommit b
  $ mkcommit c
  $ mkcommit d
  $ showgraph
  @  3 d86136f6dbff add d1 and d2
  |
  o  2 e5cbbeb3434b add c1 and c2
  |
  o  1 b7fb8fde59b2 add b1 and b2
  |
  o  0 c20cc4d302fc add a1 and a2

Test that split behaves correctly on error.
  $ hg split -r 0 1 2
  abort: more than one revset is given
  (use either `hg split <rs>` or `hg split --rev <rs>`, not both)
  [255]

Test basic case of splitting a head.
  $ hg split << EOF
  > y
  > y
  > n
  > y
  > EOF
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  adding d1
  adding d2
  diff --git a/d1 b/d1
  new file mode 100644
  examine changes to 'd1'? [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +d1
  record change 1/2 to 'd1'? [Ynesfdaq?] y
  
  diff --git a/d2 b/d2
  new file mode 100644
  examine changes to 'd2'? [Ynesfdaq?] n
  
  Done splitting? [yN] y

  $ showgraph
  @  5 43b9beefca2e add d1 and d2
  |
  o  4 3c66f08f0fd3 add d1 and d2
  |
  o  2 e5cbbeb3434b add c1 and c2
  |
  o  1 b7fb8fde59b2 add b1 and b2
  |
  o  0 c20cc4d302fc add a1 and a2

Split in the middle of a stack.
  $ hg up 2
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg split << EOF
  > y
  > y
  > n
  > y
  > EOF
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  adding c1
  adding c2
  diff --git a/c1 b/c1
  new file mode 100644
  examine changes to 'c1'? [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +c1
  record change 1/2 to 'c1'? [Ynesfdaq?] y
  
  diff --git a/c2 b/c2
  new file mode 100644
  examine changes to 'c2'? [Ynesfdaq?] n
  
  Done splitting? [yN] y
  rebasing 4:* "add d1 and d2" (glob)
  rebasing 5:* "add d1 and d2"* (glob)

  $ showgraph
  o  9 bdb846f063c6 add d1 and d2
  |
  o  8 acbc5d06143b add d1 and d2
  |
  @  7 bff303a2c228 add c1 and c2
  |
  o  6 6227053e403e add c1 and c2
  |
  o  1 b7fb8fde59b2 add b1 and b2
  |
  o  0 c20cc4d302fc add a1 and a2

Split with multiple children and using hash.
  $ hg up c20c
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ mkcommit d
  $ hg split c20c << EOF
  > y
  > y
  > n
  > y
  > EOF
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  adding a1
  adding a2
  diff --git a/a1 b/a1
  new file mode 100644
  examine changes to 'a1'? [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +a1
  record change 1/2 to 'a1'? [Ynesfdaq?] y
  
  diff --git a/a2 b/a2
  new file mode 100644
  examine changes to 'a2'? [Ynesfdaq?] n
  
  Done splitting? [yN] y
  rebasing 1:* "add b1 and b2" (glob)
  rebasing 6:* "add c1 and c2" (glob)
  rebasing 7:* "add c1 and c2" (glob)
  rebasing 8:* "add d1 and d2" (glob)
  rebasing 9:* "add d1 and d2" (glob)
  rebasing 10:* "add d1 and d2"* (glob)

  $ showgraph
  o  18 5ad76779e999 add d1 and d2
  |
  | o  17 c2fa6cc56f60 add d1 and d2
  | |
  | o  16 7c766f705803 add d1 and d2
  | |
  | o  15 7300aee81508 add c1 and c2
  | |
  | o  14 7c57722f849b add c1 and c2
  | |
  | o  13 cf2484b29d75 add b1 and b2
  |/
  @  12 a265b3c6c419 add a1 and a2
  |
  o  11 5a5595e342b1 add a1 and a2

Split using revset.
  $ hg strip 18
  saved backup bundle to * (glob)
  $ hg split "children(.)" << EOF
  > y
  > y
  > n
  > y
  > EOF
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  adding b1
  adding b2
  diff --git a/b1 b/b1
  new file mode 100644
  examine changes to 'b1'? [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +b1
  record change 1/2 to 'b1'? [Ynesfdaq?] y
  
  diff --git a/b2 b/b2
  new file mode 100644
  examine changes to 'b2'? [Ynesfdaq?] n
  
  Done splitting? [yN] y
  rebasing 14:* "add c1 and c2" (glob)
  rebasing 15:* "add c1 and c2" (glob)
  rebasing 16:* "add d1 and d2" (glob)
  rebasing 17:* "add d1 and d2"* (glob)

  $ showgraph
  o  23 065a5bb834a6 add d1 and d2
  |
  o  22 e3e63b66173e add d1 and d2
  |
  o  21 6b6c4cdbcb5c add c1 and c2
  |
  o  20 216c1cfd66ba add c1 and c2
  |
  @  19 ef9770b15bd8 add b1 and b2
  |
  o  18 172212eeb9e4 add b1 and b2
  |
  o  12 a265b3c6c419 add a1 and a2
  |
  o  11 5a5595e342b1 add a1 and a2
  
  o  10 bd98a3c83a29 add d1 and d2
  |
  x  0 c20cc4d302fc add a1 and a2

Test that command aborts when given multiple commits.
  $ hg split 11 12
  abort: more than one revset is given
  (use either `hg split <rs>` or `hg split --rev <rs>`, not both)
  [255]

Test --no-rebase flag.
  $ mkcommit e
  $ hg rebase -s 20 -d .
  rebasing 20:* "add c1 and c2" (glob)
  rebasing 21:* "add c1 and c2" (glob)
  rebasing 22:* "add d1 and d2" (glob)
  rebasing 23:* "add d1 and d2" (glob)
  $ showgraph
  o  28 5f8ed24aed8c add d1 and d2
  |
  o  27 b5591417a3eb add d1 and d2
  |
  o  26 484cd1d66520 add c1 and c2
  |
  o  25 e051398780c8 add c1 and c2
  |
  @  24 c1d00dbe112a add e1 and e2
  |
  o  19 ef9770b15bd8 add b1 and b2
  |
  o  18 172212eeb9e4 add b1 and b2
  |
  o  12 a265b3c6c419 add a1 and a2
  |
  o  11 5a5595e342b1 add a1 and a2
  
  o  10 bd98a3c83a29 add d1 and d2
  |
  x  0 c20cc4d302fc add a1 and a2
  $ hg split --no-rebase << EOF
  > y
  > y
  > n
  > y
  > EOF
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  adding e1
  adding e2
  diff --git a/e1 b/e1
  new file mode 100644
  examine changes to 'e1'? [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +e1
  record change 1/2 to 'e1'? [Ynesfdaq?] y
  
  diff --git a/e2 b/e2
  new file mode 100644
  examine changes to 'e2'? [Ynesfdaq?] n
  
  Done splitting? [yN] y

  $ showgraph
  @  30 f98ad9103c3d add e1 and e2
  |
  o  29 cc95492dd94d add e1 and e2
  |
  | o  28 5f8ed24aed8c add d1 and d2
  | |
  | o  27 b5591417a3eb add d1 and d2
  | |
  | o  26 484cd1d66520 add c1 and c2
  | |
  | o  25 e051398780c8 add c1 and c2
  | |
  | x  24 c1d00dbe112a add e1 and e2
  |/
  o  19 ef9770b15bd8 add b1 and b2
  |
  o  18 172212eeb9e4 add b1 and b2
  |
  o  12 a265b3c6c419 add a1 and a2
  |
  o  11 5a5595e342b1 add a1 and a2
  
  o  10 bd98a3c83a29 add d1 and d2
  |
  x  0 c20cc4d302fc add a1 and a2

Test that bookmarks are correctly moved.
  $ reset
  $ mkcommit a
  $ hg book test1
  $ hg book test2
  $ hg bookmarks
     test1                     0:* (glob)
   * test2                     0:* (glob)
  $ hg split << EOF
  > y
  > y
  > n
  > y
  > EOF
  (leaving bookmark test2)
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  adding a1
  adding a2
  diff --git a/a1 b/a1
  new file mode 100644
  examine changes to 'a1'? [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +a1
  record change 1/2 to 'a1'? [Ynesfdaq?] y
  
  diff --git a/a2 b/a2
  new file mode 100644
  examine changes to 'a2'? [Ynesfdaq?] n
  
  Done splitting? [yN] y

  $ showgraph
  @  2 a265b3c6c419 add a1 and a2
  |
  o  1 5a5595e342b1 add a1 and a2
  $ hg bookmarks
     test1                     2:* (glob)
   * test2                     2:* (glob)

Test the hint for Phabricator Diffs being duplicated
  $ cd ..
  $ newrepo
  $ echo 1 > a1
  $ echo 2 > a2
  $ hg commit -Aqm "Differential Revision: http://example.com/D1234"
  $ hg split --config split.phabricatoradvice="amend the commit messages to remove them" << EOF
  > y
  > y
  > n
  > y
  > EOF
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  adding a1
  adding a2
  diff --git a/a1 b/a1
  new file mode 100644
  examine changes to 'a1'? [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +1
  record change 1/2 to 'a1'? [Ynesfdaq?] y
  
  diff --git a/a2 b/a2
  new file mode 100644
  examine changes to 'a2'? [Ynesfdaq?] n
  
  Done splitting? [yN] y
  hint[split-phabricator]: some split commits have the same Phabricator Diff associated with them
  amend the commit messages to remove them
  $ showgraph
  @  2 b696183283c3 Differential Revision: http://example.com/D1234
  |
  o  1 6add538b4b79 Differential Revision: http://example.com/D1234