-*- mode:outline -*-

* Priorities
============
A (High)   to be fixed before release
B (Medium) desirable to fix at some point
C (Low)    probably not worth wasting time on

* This is a list of things which need doing in the generic interface
====================================================================

A Structured review of complete system (2h hhg & tms)

A Update documentation, in particular document bugs and workarounds
  (4h hhg & tms) 

A Implement more generic mechanism for large undos (2h)

    COQ: C-c u inside a Section should reset the whole section, then
         redo defns 

    LEGO: consider Discharge; perhaps unrol to the beginning of the
          module?
    
B Implement proof-find-previous-terminator and bind it to C-c C-a
  (45min tms)

B Technical documentation to record expertise and allow users of other
  proof systems to adopt generic package (40h hhg & tms)

B Port packages to XEmacs 20

A Fixing up errors caused by pbp-generated commands; currently, script
  management unwisely assumes that pbp commands cannot fail (2h tms)

C pbp code doesn't quite accord with the tech report; in particular it
  decodes annotations eagerly. Lazily would be faster, and it's what
  the tech report claims
  --- djs: probably not much faster, actually.

C It would be nice to have a version ported to emacs19 (or
  20). Unfortunately, it's currently impossible to port the pbp code,
  since emacs19 doesn't properly handle highlighting of nested
  overlays. The bulk of the stuff dependent on which version of emacs
  is running has been moved to proof-dependencies.el, but there are
  doubtless differences in font-locking and menu code which will
  require some work. One should check regularly if extents become
  available in emacs19

B file handling could be more robust; perhaps one should always cd to
  the directory corresponding to the script buffer (currently only
  done for the buffer which starts up the proof system) (30min tms)

C LEGO and Coq modes overwrite each other.

C We need to go over to piped communication rather than ptys to fix
  the (Solaris) ^G bug. In this circumstance there's a bug in the
  eager annotation code

C Outline-mode does not work due to read-only restrictions of
  protected region

* Here are things to be done to Lego mode
=========================================

A LEGO mode might incorporate changes to Coq mode menu, in particular
  making help refer to the info file (30min tms)

A Sometimes e.g., ~tms/lego/imperative/recursion/Prepare_vc.l,
  annotations are recorded in the object file. This needs to be
  changed in the SML code. (initially 2h tms)

C Mechanism to save object file

A Equiv, Next,... aren't handled properly, because LEGO does not
  refresh the proof state. Perhaps it would be easiest to get LEGO to
  output more information in proof script mode (2h tms)

A Error messages need to be revised e.g., if an import fails, LEGO
  outputs

    Error in file: search: undefined or out of context: should
   (* closing file ./blah.l; time= 0.010000  gc= 0.0  sys= 0.0 *)
   Error: Unwinding to top-level

  but script management only prints the last line. (5h tms)

* Here are things to be done to Coq mode
========================================

? There's a bug so the goal buffer isn't displaying everything that
  happens.

C Sections and files are handled incorrectly.

A Update documentation to include C-c C-s. (10min hhg)

A Lifted nested lemmas respond incorrectly to C-c u: Coq gets sent the
  correct command if I undo up to the lower lemma, but the buffer
  undoes to the upper lemma.  I.e., if I start Lemma x, then prove
  Lemma y, then finish x, and undo lemma x, then lemma y gets undone
  in the buffer as well. (45min hhg)

B Proof-by-Pointing (10h hhg)