When matching a name, this pattern extracts a number of name components, and saves the sub-name
in variables object in VariablePattern.match return value.
When building a name, this pattern succeeds if the variable is present in
VariablePattern.build function argument.
Match or construct a variable name portion.
Remarks
When matching a name, this pattern extracts a number of name components, and saves the sub-name in variables object in VariablePattern.match return value.
When building a name, this pattern succeeds if the variable is present in VariablePattern.build function argument.