TODO


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-----------------------------------------------------------------------------
-- bugs

* Pick the preferred export names as per the paper.

* A module re-export should only reference the target module if the
  target module is imported without hiding any of its exports (otherwise
  we should inline just the exported bits).

* remove the s/r conflicts I added to the grammar

* Support for the rest of GHC extensions in the parser:
  - scoped type variables (return types left to do).
  - template haskell
  - explicit kind annotations

* Be a bit cleaner about error cases: some internal errors can be
  generated by bugs in the Haskell source.  Divide out the proper
  internal error cases and emit proper error messages.

* derived instance support isn't quite right (doing it properly is 
  hard, though).

* Referring to something that has a defn but no type signature doesn't
  elicit a useful message.

* The synopsis generated for a module with no docs should not attempt to
  link to the doc for each entity.  We need a different kind of summary
  here: what we really want is just the documentation section but without
  the extra whitespace between decls.

-----------------------------------------------------------------------------
-- features

* nested itemized and enumerated lists.

* There ought to be a way to include some structure in the "description"
  (section headings, etc.) and possibly in other comments.  (suggseted
  by Daan).

* Comments on instance declarations?  (suggested by Daan and Iavor).

* Comments on default method declarations?  (suggested by Satnam).

* Add a search feature which just invokes Google?

* Do the unlitting/CPPing from Haddock itself so we get the source file
  links right.

* attributes for individual declarations, eg.
    -- #abstract
  or targetted to a specific decl:
    -- #T: abstract

  #long, #short, #noinstances (on a type or class)

  #inline, #noinline on a module export

* Allow documentation annotations to explicitly name the entity they
  refer to.

* In the contents page, indicate portability/stability of each module
  somehow.

* Add back-references from the definition to the uses of types/classes
  (perhaps in the index?)

* Add a link to the defining location of a re-exported entity

* fixities

* include file revision info in module headers

* Allow individual function arguments to be documented when the function
  type is a record element?

* hiding instances?

-----------------------------------------------------------------------------
-- cosmetic

* for a constructor, don't fill its entire cell with a grey background.

* switch to longer rendering form for datatypes when necessary?

* remove extra whitespace from the generated HTML to save space