On Tue, Dec 22, 2020, John Gardner wrote: > I condemn two spaces, period.
Having gotten bitten by the who-says-what-where bug concerning double-spaced sentences, I re-read my own documentation for the .SS macro in mom. Seems to me I covered all the bases: "Typeset copy should never have two spaces between sentences, and the "zero" argument [to .SS] tells groff to give the extra spaces no space at all (effectively removing them). Therefore, if you double-space your sentences (as you should when writing in a text editor), get in the habit of putting .SS 0 at the top of your files. If you do use SS for something other than ensuring that you don’t get unwanted sentence spaces in output copy, you can set or reset the sentence space to the groff default (the same width as a word space, ie double-spaced input sentences will appear double-spaced on output as well) with .SS DEFAULT If you’re using the document processing macros and your PRINTSTYLE is TYPEWRITE, .SS DEFAULT is the default, because you do want double spaces between sentences in copy that imitates the look of a typewritten document." -- Peter Schaffter https://www.schaffter.ca