Clojure parsing WTFs

No spec of any kind :( The closest is the reader documentation, but this is sparse, incomplete, and uses imprecise language.

Lexing/parsing edge cases

Reader doc says "Symbols begin with a non-numeric character and can contain alphanumeric characters and *, +, !, -, _, and ? (other characters will be allowed eventually, but not all macro characters have been determined)"
- So +foo is a valid symbol. However, +3foo is interpreted as an (invalid) number.
Doc says "Numbers - generally represented as per Java". However, there are several kinds of numeric literals that Java supports which Clojure does not recognize; this is undocumented:
- Binary literals (e.g. 0b1101) are unrecognized, even though hex literals (0x42) are
- Long, float, and double suffixes (e.g. 1.234f)
- Java 7+ allows for underscores in numbers for readability: 123_456
There are several undocumnented dispatch macro forms: #^, #!, #=, #<.