EncodingError is raised when checking code strings containing symbol literals with invalid UTF-8 chars for completeness

[egwspiti]

> MethodSource.complete_expression?('x = :"\xC3"')
 => EncodingError: invalid encoding symbol

Although this code string has invalid utf-8 chars, it is complete, and thus true should be returned.

[kyrylo]

I don't think it's possible to fix this easily given the mechanism this (and even my (fast_method_source)) library works.

[egwspiti]

Then I guess pry/pry#1516 should be reopened.