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# Based on nasty.awk, test same thing for printf # BEGIN { a="aaaaa" a=a a #10 a=a a #20 a=a a #40 a=a a #80 a=a a #160 a=a a # i.e. a is long enough printf("a = %s, f() = %s\n", a, f()) print a } function f() { gsub(/a/, "123", a) return "X" }