Viivi version 00.23.00 (alpha) release notes

The following points were fixed in Viivi version 00.23.00 (alpha).

• The default R5RS compatibilities have been changed to allow more customary codes to be supported in the default state.
  • binding of the symbol call/cc
    • [OLD] no binding
    • [NEW] bound to #<procedure:call-with-current-continuation>
  • argument number for continuation calls
    • [OLD] one
    • [NEW] zero or one
  • argument number for eval calls
    • [OLD] one
    • [NEW] one or two
  • return value from define call
    • [OLD] #<unspecified>
    • [NEW] newly bound value
  • return value from set! call
    • [OLD] #<unspecified>
    • [NEW] newly bound value
  • return value from load call
    • [OLD] #<unspecified>
    • [NEW] last evaluation value


• With the above changes, the argument command -callcc has been changed to take a boolean argument value.
  • -callcc true
    To bind the symbol call/cc to #<proc:call-with-current-continuation>.
  • -callcc false
    To unbind the symbol call/cc from #<proc:call-with-current-continuation>.


• Error handling has been corrected for the argument commands -callcc/-C/-E.