The search-engine module was replaced by the opensearch module November 5, 2010, during epoch 0.9.3.  So if you are using an up-to-date version of Conkeror, refer to OpenSearch instead.

The way the search-engine module works is like this:

 1. You make a directory, and put your opensearch description files in it.
 1. Then you call `load_search_engines_in_directory` on an nsIFile object for that directory.  This creates definitions of your search engines in memory.
 1. Then you can define webjumps from the loaded search engines, by calling `define_search_engine_webjump` for each one.

As a typical example, suppose you have a subdirectory of your conkerorrc directory for your opensearch files.

{{{
load_search_engines_in_directory(make_file("~/.conkerorrc/search-engines"));
define_search_engine_webjump("foo.xml", "foo");
}}}