1 + hg init

     2 + echo a

     3 + hg add a

     4 + hg commit -t test -u test -d '0 0'

     5 + hg history

     6 changeset:   0:acb14030fe0a21b60322c440ad2d20cf7685a376

     7 tag:         tip

     8 user:        test

     9 date:        Thu Jan  1 00:00:00 1970

    10 summary:     test

    11 

    12 + hg tag -u test -d '0 0' bleah

    13 + hg history

    14 changeset:   1:863197ef03781c4fc00276d83eb66c4cb9cd91df

    15 tag:         tip

    16 user:        test

    17 date:        Thu Jan  1 00:00:00 1970

    18 summary:     Added tag bleah for changeset acb14030fe0a21b60322c440ad2d20cf7685a376

    19 

    20 changeset:   0:acb14030fe0a21b60322c440ad2d20cf7685a376

    21 tag:         bleah

    22 user:        test

    23 date:        Thu Jan  1 00:00:00 1970

    24 summary:     test

    25 

    26 + echo foo

    27 + hg tag -u test -d '0 0' bleah2

    28 abort: working copy of .hgtags is changed!

    29 (please commit .hgtags manually)

    30 + echo failed

    31 failed