An explanatory note to be added to error messages when there's a problem with abstract var defs
[a, b, c] => "(a, b, c)" [a, B] => "(param1, param2)" [a, B, c] => "(param1, ..., param2)"
Look through the base types of the found type for any which might have been valid subtypes if given conformant type arguments.
Does the positioned line assigned to t1 precede that of t2?
For errors which are artifacts of the implementation: such messages indicate that the restriction may be lifted in the future.
Devising new ways of communicating error info out of desperation to work on error messages.
The symbol which the given accessor represents (possibly in part).
Given any number of types, alters the name information in the symbols until they can be distinguished from one another: then executes the given code.