On Fri, Jul 31, 2020 at 08:52:59PM +0200, Pierre-Jean Fichet wrote: > Subject: Re: Groff vs Heirloom troff (was Re: Quick question: how to do > .index in groff?) > > Larry Kollar <larry.kol...@me.com> wrote: > > I’m using neatroff for printed fiction,... > > (including font features like small caps and extended > > ligatures) and paragraph- at-once justification. Still, I > > chafe at its low resolution (1/720in vs Groff’s 1/72000in), > > because some microtypography requires a bit more than 1/10pt > > precision. The macro set I use tries to accommodate either one. > > As a simple curiosity, to help me improve my typographic eye, could > you please explain me in which situation you need a higher resolution?
For almost everything I typeset, especially books and newsletter-type publications, I always at least a few places where I need to use track kerning on a paragraph in order to get good word spacing and to shorten or lengthen paragraphs in order to avoid widows (the last line of a paragraph starting a column of text). When I adjust the kerning (or mortising, if necessary) in values of one-hundredth or one-thousandth of a point, it can make a difference in whether a word fits on a line or is broken or pushed to the next line, thereby making the paragraph too long. I avoid trying to adjust only part of a paragraph because that can drastically affect the "colour" (i.e., density) of the text. That said, I've never been convinced that paragraph-at-a-time justification makes a difference to the work I need to do for getting good word fits and even colour to the page. Over a period of about ten years starting in the late 1990s, I typeset about 20 books using LaTeX (probably about 15,000 pages altogether, the proceedings from various computer conferences) and I found that the TeX paragraph-at-a-time justification had to be scrutinized and adjusted just as much as my groff work. The trade-off to getting better word spacing was that often TeX just failed and overset lines. When it oversets a line you either have to catch the stderr messages warning about that (among much other noise) or look closely at the right margin to find often very small amounts of protrusions into the margin. I much prefer groff's process because I know it will never overset and bad spacing catches my eye very easily. Maybe this isn't a good argument against using the Knuth-Plass algorithm for justification, and maybe I just never found the correct way to solve my problems in TeX, but I would like to caution people who think that the implementation of that algorithm in groff is going to lessen the effort that goes into high-quality typography. I should also point out that I think the TeX community is a wonderful group of people. I attended their annual conference a few years ago when it occurred in Toronto and had a really good time. Collaborating and exchanging typographical ideas with them would be of great benefit to both of our communities. -- Steve -- Steve Izma - Home: 35 Locust St., Kitchener, Ontario, Canada N2H 1W6 E-mail: si...@golden.net phone: 519-745-1313 cell (text only; not frequently checked): 519-998-2684 == I have always felt the necessity to verify what to many seemed a simple multiplication table. -- Ilya Ehrenburg (Soviet author and critic; he's not talking about mathematics)