On 7/17/22, Douglas McIlroy <douglas.mcil...@dartmouth.edu> wrote: > In regard to turning the warning on or off, the warning should not be > given when sentence spacing is set to 0 (or below some small > threshold).
Since the proposal (now filed as http://savannah.gnu.org/bugs/?62776) gives the user the power to turn the warning on and off at will throughout the document, it seems presumptuous to second-guess the user's stated preference based on other factors. > In that case the opposite warning would be appropriate--a > double space between sentences is questionable when sentence spacing > is 0. On *input*, the user should (ideally) always put two spaces between sentences, as this enables groff to properly detect sentence divisions and do with those whatever is requested via .ss. (In practice, if the additional sentence spacing will be set to 0 throughout the document and remain that way forevermore no matter who later edits the document in its lifetime, this doesn't matter, but the future is hard to know with that much certainty, so letting groff detect all sentence divisions is a good defensive-writing strategy.) A double space between words *within* a sentence is more likely to be a typo, and one that adversely affects the output, but that's a different issue.