Hi, Doug! At 2020-12-22T09:33:20-0500, M Douglas McIlroy wrote: > The words about double spacing quoted below can be misread as > unconditional advice. I suggest replacing "In" with "In this case". > > Also so much mention of AT&T strikes me as clutter. At least the first > instance would better be dropped. > > "If a second argument is never given to the 'ss' request, GNU 'troff' > separates sentences as AT&T 'troff' does. In input to GNU 'troff', as > with AT&T 'troff', a sentence should always be followed by either a > newline or two spaces."
I ended up eliminating that entire paragraph, as it is now redundant
with other, earlier, material in our Texinfo manual.
The second sentence is anticipated by node "Sentences":
...when GNU @code{troff} encounters one of these
[end-of-sentence] characters at the end of a line, or one of
them is followed by two or more spaces on the same input line,
it appends a normal space followed by an inter-sentence space in
the formatted output.
The first sentence is anticipated earlier in the same node:
The optional second argument sets the amount of additional space
separating sentences on the same output line in fill mode. If
the second argument is omitted,
@var{additional-sentence-space-size} is set to
@var{word-space-size}.
I also eliminated the paragraph from groff_diff(7); describing how groff
_isn't_ different from AT&T troff isn't in the page's charter--neither
is general advice on good input conventions.
Regards,
Branden
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