[Python-apps-team] Bug#552423: Reserved revnos aren't.

[Trent W. Buck]

Package: mercurial
Version: 1.3.1-1
Severity: normal

Apparently "tip", "null" and "." are reserved revision strings.  But
"hg branch" doesn't stop you using them as normal branch names:

    $ hg init
    $ hg help revisions | grep reserved
        The reserved name "tip" is a special tag that always identifies
        The reserved name "null" indicates the null revision. This is the
        The reserved name "." indicates the working directory parent. If
    $ for i in tip null .; do hg branch $i; hg ci -m $i; done
    marked working directory as branch tip
    marked working directory as branch null
    marked working directory as branch .
    $ hg branches
    .                              2:8161069982f6
    null                           1:88bb6444027e (inactive)
    tip                            0:ac0a4b021d5c (inactive)

I happened to notice this when a co-worker accidentally created a tag
and a branch with the same name, and "hg update release-1.2.3" took me
to the tag instead of the branch.  I was very confused for a while,
because "hg fetch" claimed I wasn't at a branch head.

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.30-2-686 (SMP w/1 CPU core)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages mercurial depends on:
ii  libc6                         2.9-25     GNU C Library: Shared libraries
ii  mercurial-common              1.3.1-1    scalable distributed version contr
ii  python                        2.5.4-2    An interactive high-level object-o
ii  python-support                1.0.4      automated rebuilding support for P
ii  ucf                           3.0022     Update Configuration File: preserv

mercurial recommends no packages.

Versions of packages mercurial suggests:
ii  emacs                         23.1+1-4   The GNU Emacs editor (metapackage)
pn  kdiff3 | tkdiff | meld | xxdi <none>     (no description available)
pn  qct                           <none>     (no description available)
pn  wish                          <none>     (no description available)

-- no debconf information