Follow-up Comment #23, bug #65474 (group groff):
[comment #11 comment #11:]
> Solaris 10 /usr/bin/nroff outputs "CASE a", which is what I'd expect.
Heirloom troff does as well.
> gnroff outputs "NOTREACHED", which is surprising.
My guess at the end of comment #16 was wrong. This, it turns out, is an
application of bug #45502. In a nutshell, groff diverges from other troffs
when given an .if or .ie with an empty branch (no content after the
conditional), which is what the ". ie '1'2'" line has. Put any content after
that test, and all the troffs produce the same output.
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