[Bug 3983] New: prune: when pruning a changeset with a bookmark the bookmark deactivates

[mercurial-bugs at selenic.com]

http://bz.selenic.com/show_bug.cgi?id=3983

          Priority: normal
            Bug ID: 3983
                CC: mercurial-devel at selenic.com
          Assignee: pierre-yves.david at logilab.fr
           Summary: prune: when pruning a changeset with a bookmark the
                    bookmark deactivates
          Severity: bug
    Classification: Unclassified
                OS: Mac OS
          Reporter: sean.michael.farley at gmail.com
          Hardware: PC
            Status: UNCONFIRMED
           Version: 2.6.3
         Component: evolution
           Product: Mercurial

This appears to happen only when there are multiple bookmarks in an ancestry
line:

$ hg init .
$ echo a>a
$ hg ci -Am0
$ hg book @
$ hg book foo
$ echo b>>a
$ hg ci -Am1
$ hg book bar
$ echo c>>a
$ hg ci -Am2

Looking at the active bookmark, we see that it is 'bar':

$ hg book
   @                         0:a400c4e79487
 * bar                       2:f4fe8d5540e9
   foo                       1:9272668e857a

If we strip,

$ hg strip .

'bar' is still, correctly, active:

$ hg book
   @                         0:a400c4e79487
 * bar                       1:9272668e857a
   foo                       1:9272668e857a

But if we prune,

$ hg prune .

'bar' is deactivate:

$ hg book
   @                         0:a400c4e79487
   bar                       1:9272668e857a
   foo                       1:9272668e857a

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