contrib/docker/apache-server/vhost.conf

errors: restructure formatparse() to clarify conditions a bit

The `similar` list will be calculated only for
`error.UnknownIdentifier`. It was then printed only if `inst.location
is None`, which is true for that exception type, but it's an indirect
condition to rely on.

Also, it looked from the code like it could both report similarities
and print a hint. That would be a little awkward because the
similarity report looks similar to the hint (both are printed within
parentheses). I also added a `elif` to clarify that. I plan to
refactor this more coming patches so the similarity report actually is
a hint.

Differential Revision: https://phab.mercurial-scm.org/D9343

# Apache won't be able to resolve its own hostname, so we sneak this
# into the global context to silence a confusing-to-user warning on
# server start.
ServerName hg

<VirtualHost *:80>
  DocumentRoot /var/hg/htdocs
  <Directory />
    Options FollowSymLinks
    AllowOverride None
  </Directory>

  SetEnv HGENCODING UTF-8
  SetEnv LC_TYPE UTF-8

  WSGIDaemonProcess hg processes=${WSGI_PROCESSES} threads=${WSGI_THREADS} maximum-requests=${WSGI_MAX_REQUESTS} user=www-data group=www-data display-name=hg-wsgi
  WSGIProcessGroup hg

  WSGIScriptAliasMatch ^(.*) /var/hg/htdocs/hgweb.wsgi$1

  ErrorLog ${APACHE_LOG_DIR}/error.log
  LogLevel warn
  CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>