On 11/12/14, Carsten Kunze <carsten.ku...@arcor.de> wrote: > by default Heirloom troff inserts a double word space if a line ends with > ":". Is this correct US English typography?
Most modern US typography uses the same amount of space for everything on the line: between sentences, between words, and after any punctuation that requires a following space. (Here, "modern" refers to the past 50 years or so; see http://en.wikipedia.org/wiki/History_of_sentence_spacing#Movement_to_single_sentence_spacing) So the default groff behavior of adding additional space between sentences also does not follow today's typical US typography. You would have to specify ".ss 12 0" to achieve US convention.
