# comment
@=64
A=65
a=97
key=107 than nothing
key.sub=k is 107 and dot is 46
key2=key3 value2
key1=value1 - violation
key3=value3
key4=
B=2=3 - violation
# an other comment
key5=first double key pair
key3=value4 - violation
key5=second double key pair again
#comment
key3=value4 - violation, verify correct line number
