ref: 91f35d25cdc9e46efb740c51e2a8b0b0a4dec91a
dir: /bugs-fixed/string-conv.awk/
BEGIN {
OFMT = ">>%.6g<<"
a = 12.1234
print "a =", a
b = a ""
print "1 ->", b
CONVFMT = "%2.2f"
b = a ""
print "2 ->", b
CONVFMT = "%.12g"
b = a ""
print "3 ->", b
}