🚀 go-pugleaf

I am running ISC 2.0.2 Unix and ISC text processing package.  When I have
the following line, with neither of the registers set on the command line:

	.if \nG==1&\nI==0 \{\
	.tm inside coverdef G=\nG I=\nI

It gets past the if statement and shows that both registers are indeed zero.

If I change the order of the test, like this:

	.if \nI==0&\nG==1 \{\
	.tm inside coverdef G=\nG I=\nI

It doesn't get to the next statement, just as I would expect.  If I do -rG1
on the command line, then it gets past the if statement, as I expected.

What the Hell is going on here?  Is the ISC version of DWB 2.0 broke?
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