Forums Bug Reports $calc(*/0)

In mIRC 6.1:
//echo -a $calc($null/1) returns "0"
//echo -a $calc($calc(0/0)/1) returns "0"

In mIRC 6.03:
//echo -a $calc($null/1) returns "* /echo: insufficient parameters"
//echo -a $calc($calc(0/0)/1) returns "0"

That's what I'm talking about.
Sorry for post things about an old mIRC version.