There is a set of ICANN recommendations for search list processing: https://www.icann.org/en/groups/ssac/documents/sac-064-en.pdf I do not think this is something that can be currently configured in /etc/resolv.conf. Eventually, we should also change the default, but the immediate goal is to provide configuration options to follow the recommendations if the system administrator desires that. Defaulting the search list from the host name is also something that will need fixing. Currently, there does not seem to be a good way to disable the search list completely and also prevent dotless queries from reaching the root name servers.
*** Bug 13935 has been marked as a duplicate of this bug. ***