Preprocessor macro to quote its argument

[Adrian McCarthy]

In article <1112 at mti.mti.com> adrian at mti.UUCP I wrote:
>Ever needed a preprocessor macro that could quote its argument?  [...]
>	#define Q	"
>	#define Q1(x)	Q x "

It has been pointed out by several kind folks that this is *not*
ANSI-compliant.  ANSI preprocessors do the tokenization of the input for
the rest of the compiler (thus ``preprocessor'' is arguably a misnomer),
so the #define lines would generate errors since the unpaired double-quote
is an incomplete token.

For ANSI preprocessors, use:
	#define Q1(x)	#x
For pre-ANSI preprocessors, the original solution *may* work.  Reportedly,
	#define Q1(x)	" x "
may even work with many pre-ANSI preprocessors, though not VAX C.

OK, so I was wrong,
Aid.  (adrian at gonzo.mti.com)