From: nobuyoshi nakada <nobuyoshi.nakada@...>
Date: 2005-08-05T11:20:41+09:00
Subject: Re: ruby-dev summary 26468-26661

Hi,

At Fri, 5 Aug 2005 00:29:55 +0900,
Eric Mahurin wrote in [ruby-talk:150730]:
> Here is my proposal:
> 
> { args : code }
> 
> Even if when you make the args : optional to preserve
> compatibility, I think this would be parsable if you treat the
> arg list (possibly with default expressions) like a normal
> statment except that the delimiter is ":" instead of ";".  This
> should work because an arg list is a syntactically valid
> statement.  i.e.
> 
> a=1
> other=[3,4]
> a,b=2,*other
> 
> When the lexer finds a ":" instead of a ";" or newline as the
> statement delimiter of first statement, it would treat that as
> the arg list.

Default values can be very long beyond new lines, if it is a
block statement or is parenthesized.  it seems very confusing
and I guess such parser is impossible.  Leading sign would be
mandatory.

-- 
Nobu Nakada