>Isn't possible to do it in a single line in the same prxchange rather than in two separate lines.
It is possible if the replacement string is not changing, for example always ---.
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For an increase in speed, try the following which uses lazy repetition factors (i.e. \s*?) data test; length var1 $ 100 var2 $ 100; var1=' // / /ab c / d e f /g hij/ //kl m/ / '; var2=prxchange('s/\s*?(\/)\s*?(?!\s)/$1/', -1, var1); run;
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