comparison tests/test-topic.t @ 4061:ad4194399b47

topic: handle ambiguous arguments to topic() revset

These arguments can be interpreted as either string or a revset. The decision
is made based on existence of topic with such a name. This matches the behavior
of branch() revset.

The code needs to know all topics that ever existed in the repo, because some
commands report "disappearance" of topics after certain operations, using this
revset (e.g. via stack.stack or repo.revs).

4060:54eade86ac31

Using revsets in topic()
  $ tlog() {
  >   hg log -T '{rev}: {topic}\n' -r "$1"
  > }

  $ tlog 'topic(head())'
  9: fran
  $ tlog 'topic(:)'
  9: fran
  $ tlog 'topic(all())'
  9: fran
  $ tlog 'topic(topic(fran))'
  9: fran
  $ tlog 'topic(wdir())'
  9: fran

Deactivate the topic.
  $ hg topics
   * fran (1 changesets)
  $ hg topics --clear

4061:ad4194399b47

Using revsets in topic()
  $ tlog() {
  >   hg log -T '{rev}: {topic}\n' -r "$1"
  > }

  $ tlog 'topic(9)'
  9: fran
  $ tlog 'topic(8)'
  $ tlog 'topic(head())'
  9: fran
  $ tlog 'topic(:)'
  9: fran
  $ tlog 'topic(all())'
  9: fran
  $ tlog 'topic(topic(fran))'
  9: fran
  $ tlog 'topic(wdir())'
  9: fran
  $ tlog 'topic(nonsense)'
  abort: unknown revision 'nonsense'!
  [255]

Pattern matching in topic() revset
  $ tlog 'topic("re:nonsense")'
  $ tlog 'topic("literal:nonsense")'
  abort: topic 'nonsense' does not exist!
  [255]

Deactivate the topic.
  $ hg topics
   * fran (1 changesets)
  $ hg topics --clear