Some readers (namespaced maps, tagged literals, anonymous arguments) allow reads that return nothing to “sneak” into the middle of these forms. Reads that return nothing include:

• line comments starting with ; or #!

• discard #_

• reader conditional #? or #?@ with no matching feature

Furthermore, once a non-returning read has occurred, regular whitespace may then be read again too.

Namespaced map example (this reads as #:foo{:bar :baz} ):

Tagged literal example:

Anonymous argument: - moved this issue to CLJ-2813

Approach:

Extract the body from the read loop to expose a new readSome method that returns either a form or the reader (indicating no value has been read). For namespaced maps and tagged literals, use readSome() instead of read() and fail if nothing read. nil is a valid return so the reader value is used as a sentintel.

For anonymous function arguments, moved to (modify reader approach to use regex).

Patch:

clj-2160-4.patch