SAS Macro Language: Reference

Referring to Already Quoted Variables

Items that have been masked by a macro quoting function, such as the value of &WHOSE in the following program, remain masked as long as the item is being used by the macro processor. When you use the value of WHOSE later in a macro program statement, you do not need to mask the reference again.

/* Use %STR to mask the constant, and use a  % sign to mark */
/* the unmatched single quotation mark. */
%let whose=%str(John%'s);

/* You don't need to mask the macro reference, since it was */
/* masked in the %LET statement, and remains masked. */
%put *** This coat is &whose ***;

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