clarification on +: and -: operators

From: Paul Graham (pgraham@cadence.com)
Date: Wed May 01 2002 - 13:44:05 PDT

Precedence: bulk

I would like to clarify whether the +: and -: operators are single tokens or
pairs of tokens. This affects whether a space may appear between the
characters + and :, and whether it can be constructed out of a pair
of macros:

    `define x +
    `define y :

    A[i `x`y 4] // legal??

I would vote in favor of making each of +: and -: into a single
two-character token, not a pair of one-character tokens.

Paul

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