gistfile1.txt

Exists:

Foo
Foo::Bar
Foo::Bar::Baz
Foo::Baz::Bat
Foo::Baz::Bat::Bam

Examples:

Foo.full_const_get("Bar") #=> Foo::Bar
Foo::Baz.full_const_get("Bar::Baz") #=> Foo::Bar::Baz
Foo::Baz::Bat.full_const_get("Bar::Baz") #=> Foo::Bar::Baz

Algorithm:

do regular const_get, then do the rigid const_get from Merb. Failing that, try to do the rigid const_get for the first two, etc.