---
- branch: MAIN
  date: Thu Aug 12 09:27:54 UTC 2010
  files:
  - new: '1.19'
    old: '1.18'
    path: pkgsrc/lang/ksi/Makefile
    pathrev: pkgsrc/lang/ksi/Makefile@1.19
    type: modified
  - new: '1.6'
    old: '1.5'
    path: pkgsrc/lang/ksi/PLIST
    pathrev: pkgsrc/lang/ksi/PLIST@1.6
    type: modified
  - new: '1.7'
    old: '1.6'
    path: pkgsrc/lang/ksi/distinfo
    pathrev: pkgsrc/lang/ksi/distinfo@1.7
    type: modified
  id: 20100812T092754Z.a4ff50d2e7648b82e8125f5f257637c904349261
  log: |
    Update to KSi 3.9.0

    3.9.0
    =====

    * Prerelease of the 4.0.0 that will be R6RS compliant.

    * The doc directory temporary removed from distrib.
      The old docs obsolete and new is not ready.

    * Simple R6RS-like library manager implemented.
      "load" function removed (use "import" syntax instead).

    * the ksi module system removed in a favour of new R6RS library system.

    * `psyntax.ss' that implemented 'syntax-case' in older revisions of the ksi, was removed.
      As a result, only core syntax evaluated by ksi.
      And ksi core is not a R6RS core :-(

    * '(gensym)' generate (almost) unique symbol names.
      As a part of generated symbol name used a 'session_id' that is initialized at startup.
      So, each ksi invocation has its own 'session_id'.
      This can help (in a future) to hardly optimize the scheme code evaluation
      Now the 'session_id' is initialized with random bits converted to readable string.

    * the "do" syntax, "delay" syntax and "force" function was removed from the ksi core.

    * the 'struct Ksi_Environ' and companions was rewriten almost completly.
      Now the environment has the name, the export list
      and the hashtab that maps the symbol to the value
      A value can be a plain value (the symbol is a variable) or a syntax value.
      If a symbol is bound to a syntax value, it can not be defined, assigned or
      used in any other case except in a intented syntax form
      As a special case, if a symbol is bound to a syntax value and the value is a procedure,
      the procedure is applyed to the form before evaluating it.
      (Look at 'ksi_defsyntax()' and 'ksi_compile()' for details).
      This mechanics is intended for low-level macros (as "define-macro!")
      and derived forms such as 'cond', 'case', etc.
      The normal sanitary macro system planned ;-).

    * All packed-in-the-pointer objects was removed.
      Such objects as 'ksi_nil', 'ksi_false' and so on,
      are implemented as a pointers to a memory location
      that allocated when initializing the ksi library.
      Do not be suprized the error if you use its before calling `ksi_init()'.

    * The 'struct Ksi_Char' (added) is internal representation of a character now.
     (first step to unicode).

    * the GMP library used for exact arithmetics now.
      As a result, the ksi supports the exact rational numbers now.

    * The short integers was removed.  Bignums are the only exact numbers now.
      And predefined constans 'ksi_zero', 'ksi_one', etc was removed too.
      (Use 'ksi_long2num()' in C code)

    * A flonum has real and imag part always, and so, a flonum is a complex number now.
      But 'real?' returns #t if imaginary part is zero
      and 'number->string' do not print "+0.0i" if imaginary part is zero.
      (This is not what R6RS requires but alas, it is the ksi)

    * balanced comments are writen within "#| |#" construct now
      (not with "#! !#" as in the previous revisions of the ksi).
      The sequence "#!<identifier>" used for the reader directives now.
      In addition, to support the scheme scripts, the sequence "#! " (note whitespace)
      and "#!/" in the very begin of a file supposed as a one-line comment.

    * Reader now case-sensitive by default, as required R6RS.
     Use the "#!fold-case" directive to switch the reader to the case-insensitive mode,
     and "#!no-fold-case" to switch to the case-sensitive mode back.

    * By default, the reader parses postfix keyword notation, such as "key:".
     "#!keyword-prefix" switches the reader to prefix mode, such as ":key",
     and "#!keyword-postfix" switches the reader back to postfix mode.

    * By default, the reader do not parses the old ksi keyword notation, such as "#:key".
     Use the "#!keyword-sharp" directive to switch the old mode on,
     and "#!no-keyword-sharp" to switch off.

    * "#!r6rs" directive switches the reader to the R6RS mode,
      and "#!ksi" directive switches the reader to the default mode back.

     In the r6rs mode:
       -- the keywords are not parsed at all;
       -- any sequence that starts with digit, '+', '-', '.', tried to be parsed as a number
          and, if cannot, exception raised.
          Otherwice the sequence is parsed as a symbol.

     In the ksi mode:
       --  the keywords are parsed;
       --  any sequence, that starts with digit, or '+', '-', '.' folowed by digit,
           tried to be parsed as a number and, if cannot, exception raised.
           Otherwice the sequence is parsed as a symbol.

     So, the sequence like '+x' is parsed as symbol in the ksi mode, but raise exception in the r6rs mode.

     Note that in the previous revisions of the ksi, any sequence,
     that cannot be parsed as a number, was considered as a symbol (never exception raised).

    3.5.1
    =====

    * bugfixes

    * (Windows) ksi dll name has version info now.

    3.5.0
    =====

    * code refactoring
  module: pkgsrc
  subject: 'CVS commit: pkgsrc/lang/ksi'
  unixtime: '1281605274'
  user: asau