As of 1.6rc, the
get_all_lexers() function now includes the following lexer tuple for the windows registry lexer.
('reg', (), ('*.reg',), ('text/x-windows-registry',))
Note that the alises tuple is empty. This means there's no way to do
get_lexer_by_name for this lexer, and also means that any code that iterates through all the lexers building a simple id -> name mapping may fail when it hits this entry.