github.com/benhoyt/goawk@v1.8.1/testdata/gawk/printfchar.awk (about)

     1  BEGIN {
     2  	x[65] = 1;
     3  	for (i in x) {
     4  		# i should be a string
     5  		printf "%c\n", i	# should print 1st char of string
     6  	}
     7  }