$ echo "[extensions]" >> $HGRCPATH

  $ echo "bookmarks=" >> $HGRCPATH

  $ echo "mq=" >> $HGRCPATH

  $ hg init

  $ echo qqq>qqq.txt

add file

  $ hg add

  adding qqq.txt

commit first revision

  $ hg ci -m 1

set bookmark

  $ hg book test

  $ echo www>>qqq.txt

commit second revision

  $ hg ci -m 2

set bookmark

  $ hg book test2

update to -2

  $ hg update -r -2

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

  $ echo eee>>qqq.txt

commit new head

  $ hg ci -m 3

  created new head

bookmarks updated?

  $ hg book

     test                      1:25e1ee7a0081

     test2                     1:25e1ee7a0081

strip to revision 1

  $ hg strip 1

list bookmarks

  $ hg book

   * test                      1:8cf31af87a2b

   * test2                     1:8cf31af87a2b

immediate rollback and reentrancy issue

  $ echo "mq=!" >> $HGRCPATH

  $ hg init repo

  $ cd repo

  $ echo a > a

  $ hg ci -Am adda

  adding a

  $ echo b > b

  $ hg ci -Am addb

  adding b

  $ hg bookmarks markb

  $ hg rollback

  rolling back to revision 0 (undo commit)

are you there?

  $ hg bookmarks

  no bookmarks set

can you be added again?

  $ hg bookmarks markb

  $ hg bookmarks

   * markb                     0:07f494440405

  $ cd ..