$ hg init repo

  $ cd repo

  $ echo base > base

  $ hg add base

  $ hg commit -m "base"

  $ hg bookmark -i base

  $ echo 1 > a

  $ hg add a

  $ hg commit -m "file"

  $ hg bookmark -i file

  $ echo 2 > a

  $ hg commit -m "file2"

  $ hg bookmark -i file2

  $ hg up -q 0

  $ mkdir a

  $ echo 2 > a/b

  $ hg add a/b

  $ hg commit -m "dir"

  created new head

  $ hg bookmark -i dir

Basic merge - local file conflicts with remote directory

  $ hg up -q file

  $ hg bookmark -i

  $ hg merge --verbose dir

  resolving manifests

  a: path conflict - a file or link has the same name as a directory

  the local file has been renamed to a~853701544ac3

  resolve manually then use 'hg resolve --mark a'

  moving a to a~853701544ac3

  getting a/b

  1 files updated, 0 files merged, 0 files removed, 1 files unresolved

  use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon

  [1]

  $ hg update --clean .

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ rm a~853701544ac3

Basic update - local directory conflicts with remote file

  $ hg up -q 0

  $ mkdir a

  $ echo 3 > a/b

  $ hg up file

  a: untracked directory conflicts with file

  abort: untracked files in working directory differ from files in requested revision

  [255]

  $ hg up --clean file

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (activating bookmark file)

Repo state is ok

  $ hg sum

  parent: 1:853701544ac3 

   file

  branch: default

  bookmarks: *file

  commit: (clean)

  update: 2 new changesets (update)

  phases: 4 draft

Basic update - untracked file conflicts with remote directory

  $ hg up -q 0

  $ echo untracked > a

  $ hg up --config merge.checkunknown=warn dir

  a: replacing untracked file

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (activating bookmark dir)

  $ cat a.orig

  untracked

  $ rm -f a.orig

Basic clean update - local directory conflicts with changed remote file

  $ hg up -q file

  $ rm a

  $ mkdir a

  $ echo 4 > a/b

  $ hg up file2

  abort: *: '$TESTTMP/repo/a' (glob)

  [255]

  $ hg up --clean file2

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (activating bookmark file2)

Repo state is ok

  $ hg sum

  parent: 2:f64e09fac717 

   file2

  branch: default

  bookmarks: *file2

  commit: (clean)

  update: 1 new changesets, 2 branch heads (merge)

  phases: 4 draft