🚀 go-pugleaf

In article <1995Oct21.233622.11972@news.wrc.xerox.com>,
leisner@sdsp.mc.xerox.com wrote:

>I want to token paste after macro expansion...any strategies?

  #define A tokenA
  #define B tokenB
  #define PASTEX(X,Y) PASTE(X,Y)
  #define PASTE(X,Y) X ## Y
  
  PASTEX(A,B)

You need PASTEX because ## disables further replacement for the
surrounding pp-tokens, so you have to bury it to let argument subsitution
in PASTEX do the expansions first.

That might seem strange at first, but you're constructing tokens out of
bits and pieces - this avoids accidents with the pieces, or at least it
avoids the ones you don't ask for by doing something like this...

Jim
-- 
Jim Hill              Contents public domain and worth $.02 more than you paid.
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