Consider the following minimal case: .di d foo .di .rm d
As I understand it, this diversion should never be "sprung", as there is no trap to force it out, but an output node is created (I think); an empty-page document (of 66 lines) is created from the above input. That's groff. On Unix Version 7 nroff, the diversion's contents, "foo", are output anyway. (I've started playing with SIMH.) Not only that, but I get 132 lines of output. My supposition is that some kind of implicit end-of-page trap is sprung and forces the diversion out, but on the next page, for 2 pages total. By contrast, the following input generates no output in either groff or V7 nroff: .nr a 1 .de b foobar .. .ds s S I don't feel I understand diversions very well, but can someone illuminate the above? My expectation would be no output at all from the above diversion input, not even a blank document. Regards, Branden
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