[cvs-nhc98] patch applied (hat): Changes to the hat-observe :info command.

[Malcolm Wallace]

Thu Oct 17 03:37:28 PDT 2002  malcolm
  * Changes to the hat-observe :info command.
  
  Previously, all of :info was implemented in C.  Now, only the search of
  the file for identifiers/counts is in C.  All the identifier information
  is transferred to Haskell as a symbol table, and Haskell sorts it for
  presentation to the user.
  
  For the moment, we just sort identifiers by module, then
  alphabetically.  However, the possibility is now open for many
  different kinds of info display, e.g. sorted by count, one module only,
  more detailed info about a particular identifier, separate info for
  constructors, locals etc.  We also now have the opportunity to use
  qualified identifiers in patterns, to resolve fixity/precedence in
  patterns, etc.

    M ./src/hattools/HatObserve.hs -7 +17
    A ./src/hattools/Ident.hs
    M ./src/hattools/LowLevel.hs -6 +6
    M ./src/hattools/Makefile -1 +1
    M ./src/hattools/Observe.hs -2 +6
    M ./src/hattools/artutils.c -4 +14
    M ./src/hattools/hat-names.c -56 +142