errors: raise InputError on early parse error in dispatch
I didn't think this would have any effect on the tests, but it does
because the catching in `scmutil.callcatch()` still happens. That's
because `dispatch` passes in the function that includes the parsing as
an argument to that function.
I initially used `ConfigError` here but Matt Harbison convinced me to
use `InputError`. I think that makes sense since error is not in a
config file.
Differential Revision: https://phab.mercurial-scm.org/D9387
#!/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)