revlog: finer computation of "issnapshot"
If the parent had an empty diff, we skip of it to compute a diff against the
parent base. This create shorter and simpler chain.
However these case could be wrongly detected as snapshot. So we improve the code
doing this detection.
In practice nobody care as when tried on a copy of mozilla-try and we got the
same number of snapshot (1315) in both case.
Performance where equivalent.
#!/usr/bin/env python3
#
# 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 = b"/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)