Hi Rich,

Am Dienstag, den 05.11.2013, 18:31 -0500 schrieb Rich Felker:
> While it doesn't really matter in this file, in general, macro
> arguments should be properly parenthesized, as in:

> +#define NUM(n) ((n) == -1 ? 0 : -1), ((n) == -1 ? 0 : (n))

for such a macro that is replacing two function arguments, I'd go for
a much more descriptive name, something like NUM2ARGS

> +#define STR(s) ((s) ? (s) : "")

in the context of the actual function that would certainly overkill,
but generally it is not a good idea to mix user strings and string
literals without consting them. So in a general context I'd go for
something like

#define STR(S) ((char const*)((S) ? (S) : ""))

or even

#define STR(S) ((S) ? (char const*){ (S) } : "")

to have a better type check for the argument

Jens



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