The offset from the start of the file in code units of the given encoding.
The column number in code units of the given encoding where this location starts from the start of the line.
in [foo, bar, baz]
in InstanceVariableReadNode[name: Symbol] in { name: Symbol
}
returns match status of CSI/SS3 sequence and matched length
Remove everything in the DependencyList
that matches but doesn’t satisfy items in dependencies
(a hash of gem names to arrays of dependencies).