[self-follow-up to correct an error] Please ignore the following paragraph.
At 2026-03-06T00:57:57-0600, G. Branden Robinson wrote: > First, not trusting file(1), I built a list of "sophisticated" > *roff documents by searching for any document that had an AT&T > style control request in it. This would, admittedly, not have > caught documents that changed the control character before issuing > `if` or `ie` requests, or which wrapped or replaced them. > (Replacing them would be a pretty neat trick, though Doug > McIlroy's Turing-complete simple macro expander would seem to > establish that it is, in fact, possible.[8]) The quoted email took a while to compose, and in the course of doing so I changed my approach to gathering relevant information. The foregoing is a relic thereof. > [8] https://www.cs.dartmouth.edu/doug/barem4.txt However, I'm glad to bring attention to this nifty document. :) Regards, Branden
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