options mprint mtrace mlogic symbolgen;

%macro test_no_quotes(title);
  %if &title = %then %let title = Default title;
  %put SPECIAL: TITLE is "&title";
%mend;

%test_no_quotes(Shoe Sales by Quarter);
%test_no_quotes(Stocks and Shares Earnings);
%test_no_quotes();

%macro test_quotes(title);
  %if "&title" = "" %then %let title = Default title;
  %put SPECIAL: TITLE is "&title";
%mend;

%test_quotes(Shoe Sales by Quarter);
%test_quotes(Stocks and Shares Earnings);
%test_quotes();