Re: Should we provide a keyword than means (1/0) ?

[Hans-Bernhard B. <br...@ph...>]

Ethan A Merritt wrote:

> Sure. But in this case the behavior of sscanf() or strtod() does not
> matter. parse_primary_expression() has:

>     } else if (isanumber(c_token)) {
>     } else if (isletter(c_token)) {
>     } else

> So even if the code in scanner.c has previously identified this token as
> NaN or Inf, parse_primary_expression() will ignore that and instead
> try to find a variable with that name.

Not really.  Note how isanumber() is implemented: it returns

	!token[t_num].is_token

i.e. if NaN was found in the command line, this leaves it completely up 
to the scanner whether to interpret that as a token (i.e. keyword or 
variable) or as a number.