phases: remove excessive optimization from newheads() (issue5939)
This function is intended to compute 'heads(::heads - roots::)', but it
failed because 'heads + parents(roots)' missed sibling branches of the roots.
That's why the public heads slipped down from D to B in the example added by
2a227782e754 "tests: add test demonstrating phase loss when cloning":
> E draft
> |\Z draft
> | Y draft
> D | public
> | X draft
> C/ public
> B public
> A public
where heads = {E, Z},
roots = {X}
#!/usr/bin/env python
#
# An example hgweb CGI script, edit as necessary
# See also https://mercurial-scm.org/wiki/PublishingRepositories
# Path to repo or hgweb config to serve (see 'hg help hgweb')
config = "/path/to/repo/or/config"
# Uncomment and adjust if Mercurial is not installed system-wide
# (consult "installed modules" path from 'hg debuginstall'):
#import sys; sys.path.insert(0, "/path/to/python/lib")
# Uncomment to send python tracebacks to the browser if an error occurs:
#import cgitb; cgitb.enable()
from mercurial import demandimport; demandimport.enable()
from mercurial.hgweb import hgweb, wsgicgi
application = hgweb(config)
wsgicgi.launch(application)