Helper functions:

  $ cacheexists() {

  >   [ -f .hg/cache/tags ] && echo "tag cache exists" || echo "no tag cache"

  > }

  $ dumptags() {

  >     rev=$1

  >     echo "rev $rev: .hgtags:"

  >     hg cat -r$rev .hgtags

  > }

# XXX need to test that the tag cache works when we strip an old head

# and add a new one rooted off non-tip: i.e. node and rev of tip are the

# same, but stuff has changed behind tip.

Setup:

  $ hg init t

  $ cd t

  $ cacheexists

  no tag cache

  $ hg id

  000000000000 tip

  $ cacheexists

  no tag cache

  $ echo a > a

  $ hg add a

  $ hg commit -m "test"

  $ hg co

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

  $ hg identify

  acb14030fe0a tip

  $ cacheexists

  tag cache exists

Try corrupting the cache

  $ printf 'a b' > .hg/cache/tags

  $ hg identify

  .hg/cache/tags is corrupt, rebuilding it

  acb14030fe0a tip

  $ cacheexists

  tag cache exists

  $ hg identify

  acb14030fe0a tip

Create local tag with long name:

  $ T=`hg identify --debug --id`

  $ hg tag -l "This is a local tag with a really long name!"

  $ hg tags

  tip                                0:acb14030fe0a

  This is a local tag with a really long name!     0:acb14030fe0a

  $ rm .hg/localtags

Create a tag behind hg's back:

  $ echo "$T first" > .hgtags

  $ cat .hgtags

  acb14030fe0a21b60322c440ad2d20cf7685a376 first

  $ hg add .hgtags

  $ hg commit -m "add tags"

  $ hg tags

  tip                                1:b9154636be93

  first                              0:acb14030fe0a

  $ hg identify

  b9154636be93 tip

Repeat with cold tag cache:

  $ rm -f .hg/cache/tags

  $ hg identify

  b9154636be93 tip

And again, but now unable to write tag cache:

  $ rm -f .hg/cache/tags

  $ chmod 555 .hg

  $ hg identify

  b9154636be93 tip

  $ chmod 755 .hg

Create a branch:

  $ echo bb > a

  $ hg status

  M a

  $ hg identify

  b9154636be93+ tip

  $ hg co first

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

  $ hg id

  acb14030fe0a+ first

  $ hg -v id

  acb14030fe0a+ first

  $ hg status

  M a

  $ echo 1 > b

  $ hg add b

  $ hg commit -m "branch"

  created new head

  $ hg id

  c8edf04160c7 tip

Merge the two heads:

  $ hg merge 1

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

  (branch merge, don't forget to commit)

  $ hg id

  c8edf04160c7+b9154636be93+ tip

  $ hg status

  M .hgtags

  $ hg commit -m "merge"

Create a fake head, make sure tag not visible afterwards:

  $ cp .hgtags tags

  $ hg tag last

  $ hg rm .hgtags

  $ hg commit -m "remove"

  $ mv tags .hgtags

  $ hg add .hgtags

  $ hg commit -m "readd"

  $ 

  $ hg tags

  tip                                6:35ff301afafe

  first                              0:acb14030fe0a

Add invalid tags:

  $ echo "spam" >> .hgtags

  $ echo >> .hgtags

  $ echo "foo bar" >> .hgtags

  $ echo "a5a5 invalid" >> .hg/localtags

  $ cat .hgtags 

  acb14030fe0a21b60322c440ad2d20cf7685a376 first

  spam

  foo bar

  $ hg commit -m "tags"

Report tag parse error on other head:

  $ hg up 3

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

  $ echo 'x y' >> .hgtags

  $ hg commit -m "head"

  created new head

  $ hg tags

  .hgtags@75d9f02dfe28, line 2: cannot parse entry

  .hgtags@75d9f02dfe28, line 4: node 'foo' is not well formed

  .hgtags@c4be69a18c11, line 2: node 'x' is not well formed

  tip                                8:c4be69a18c11

  first                              0:acb14030fe0a

  $ hg tip

  changeset:   8:c4be69a18c11

  tag:         tip

  parent:      3:ac5e980c4dc0

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     head

Test tag precedence rules:

  $ cd ..

  $ hg init t2

  $ cd t2

  $ echo foo > foo

  $ hg add foo

  $ hg ci -m 'add foo'      # rev 0

  $ hg tag bar              # rev 1

  $ echo >> foo

  $ hg ci -m 'change foo 1' # rev 2

  $ hg up -C 1

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

  $ hg tag -r 1 -f bar      # rev 3

  $ hg up -C 1

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

  $ echo >> foo

  $ hg ci -m 'change foo 2' # rev 4

  created new head

  $ hg tags

  tip                                4:0c192d7d5e6b

  bar                                1:78391a272241

Repeat in case of cache effects:

  $ hg tags

  tip                                4:0c192d7d5e6b

  bar                                1:78391a272241

Detailed dump of tag info:

  $ hg heads -q             # expect 4, 3, 2

  4:0c192d7d5e6b

  3:6fa450212aeb

  2:7a94127795a3

  $ dumptags 2

  rev 2: .hgtags:

  bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar

  $ dumptags 3

  rev 3: .hgtags:

  bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar

  bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar

  78391a272241d70354aa14c874552cad6b51bb42 bar

  $ dumptags 4

  rev 4: .hgtags:

  bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar

Dump cache:

  $ cat .hg/cache/tags

  4 0c192d7d5e6b78a714de54a2e9627952a877e25a 0c04f2a8af31de17fab7422878ee5a2dadbc943d

  3 6fa450212aeb2a21ed616a54aea39a4a27894cd7 7d3b718c964ef37b89e550ebdafd5789e76ce1b0

  2 7a94127795a33c10a370c93f731fd9fea0b79af6 0c04f2a8af31de17fab7422878ee5a2dadbc943d

  78391a272241d70354aa14c874552cad6b51bb42 bar

Test tag removal:

  $ hg tag --remove bar     # rev 5

  $ hg tip -vp

  changeset:   5:5f6e8655b1c7

  tag:         tip

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  files:       .hgtags

  description:

  Removed tag bar

  diff -r 0c192d7d5e6b -r 5f6e8655b1c7 .hgtags

  --- a/.hgtags	Thu Jan 01 00:00:00 1970 +0000

  +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000

  @@ -1,1 +1,3 @@

   bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar

  +78391a272241d70354aa14c874552cad6b51bb42 bar

  +0000000000000000000000000000000000000000 bar

  $ hg tags

  tip                                5:5f6e8655b1c7

  $ hg tags                 # again, try to expose cache bugs

  tip                                5:5f6e8655b1c7

Remove nonexistent tag:

  $ hg tag --remove foobar

  abort: tag 'foobar' does not exist

  [255]

  $ hg tip

  changeset:   5:5f6e8655b1c7

  tag:         tip

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     Removed tag bar

Undo a tag with rollback:

  $ hg rollback             # destroy rev 5 (restore bar)

  repository tip rolled back to revision 4 (undo commit)

  working directory now based on revision 4

  $ hg tags

  tip                                4:0c192d7d5e6b

  bar                                1:78391a272241

  $ hg tags

  tip                                4:0c192d7d5e6b

  bar                                1:78391a272241

Test tag rank:

  $ cd ..

  $ hg init t3

  $ cd t3

  $ echo foo > foo

  $ hg add foo

  $ hg ci -m 'add foo'       # rev 0

  $ hg tag -f bar            # rev 1 bar -> 0

  $ hg tag -f bar            # rev 2 bar -> 1

  $ hg tag -fr 0 bar         # rev 3 bar -> 0

  $ hg tag -fr 1 bar         # rev 4 bar -> 1

  $ hg tag -fr 0 bar         # rev 5 bar -> 0

  $ hg tags

  tip                                5:85f05169d91d

  bar                                0:bbd179dfa0a7

  $ hg co 3

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

  $ echo barbar > foo

  $ hg ci -m 'change foo'    # rev 6

  created new head

  $ hg tags

  tip                                6:735c3ca72986

  bar                                0:bbd179dfa0a7

Don't allow moving tag without -f:

  $ hg tag -r 3 bar

  abort: tag 'bar' already exists (use -f to force)

  [255]

  $ hg tags

  tip                                6:735c3ca72986

  bar                                0:bbd179dfa0a7

Strip 1: expose an old head:

  $ hg --config extensions.mq= strip 5

  saved backup bundle to $TESTTMP/t3/.hg/strip-backup/*-backup.hg (glob)

  $ hg tags                  # partly stale cache

  tip                                5:735c3ca72986

  bar                                1:78391a272241

  $ hg tags                  # up-to-date cache

  tip                                5:735c3ca72986

  bar                                1:78391a272241

Strip 2: destroy whole branch, no old head exposed

  $ hg --config extensions.mq= strip 4

  saved backup bundle to $TESTTMP/t3/.hg/strip-backup/*-backup.hg (glob)

  $ hg tags                  # partly stale

  tip                                4:735c3ca72986

  bar                                0:bbd179dfa0a7

  $ rm -f .hg/cache/tags

  $ hg tags                  # cold cache

  tip                                4:735c3ca72986

  bar                                0:bbd179dfa0a7

Test tag rank with 3 heads:

  $ cd ..

  $ hg init t4

  $ cd t4

  $ echo foo > foo

  $ hg add

  adding foo

  $ hg ci -m 'add foo'                 # rev 0

  $ hg tag bar                         # rev 1 bar -> 0

  $ hg tag -f bar                      # rev 2 bar -> 1

  $ hg up -qC 0

  $ hg tag -fr 2 bar                   # rev 3 bar -> 2

  $ hg tags

  tip                                3:197c21bbbf2c

  bar                                2:6fa450212aeb

  $ hg up -qC 0

  $ hg tag -m 'retag rev 0' -fr 0 bar  # rev 4 bar -> 0, but bar stays at 2

Bar should still point to rev 2:

  $ hg tags

  tip                                4:3b4b14ed0202

  bar                                2:6fa450212aeb

Test that removing global/local tags does not get confused when trying

to remove a tag of type X which actually only exists as a type Y:

  $ cd ..

  $ hg init t5

  $ cd t5

  $ echo foo > foo

  $ hg add

  adding foo

  $ hg ci -m 'add foo'                 # rev 0

  $ hg tag -r 0 -l localtag

  $ hg tag --remove localtag

  abort: tag 'localtag' is not a global tag

  [255]

  $ 

  $ hg tag -r 0 globaltag

  $ hg tag --remove -l globaltag

  abort: tag 'globaltag' is not a local tag

  [255]

  $ hg tags -v

  tip                                1:a0b6fe111088

  localtag                           0:bbd179dfa0a7 local

  globaltag                          0:bbd179dfa0a7