@ericsfraga @jbc I've read multiple times, that those rules were true for physical #typewriter setups but lost their significance with computers. Systems like LaTeX might add some extra spacing (although not twice as large) between sentences. Furthermore, some experts argue that the tiny dot at the bottom before the following space is almost as a second space at least from the psychological perspective.

In my world, the use of #doublespace is no thing at all anywhere.

Strunk and White "The Elements of Style" does not mention double spaces as far as I can see.

Robert Bringhurst "The Elements of Typographic Style" (1992) has a chapter on that: p.28 2.1.4: "Use a single word space between sentences". He argues that this is a "quaint Victorian habit" which resulted from classical latin and greek where sentences were started with lowercase letters.

HTH & YMMV

#typography #typesetting