Hi Branden, this is great – thanks for both the explanation (re: font-subsetting) and the positive outlook on the future of groff's macro packages.
- Jan On 2024-04-16 13:00, G. Branden Robinson wrote: > Hi Jan, > > At 2024-04-16T19:32:18+0200, Jan Eden wrote: > > after using LaTeX (pdflatex) for several years, I am testing groff > > (with mom and mm) to create PDF documents for the first time. > > > > With mom, the process is straightforward: A PDF outline is created > > automatically, the TOC entries are linked to the headings, and > > additional PDF links can be created according to the docs[1]. > > Yup. mom(7) has had first-class PDF support for several years. > > > It is a bit trickier with mm. I was able to create a PDF outline using > > a tip by T. Kurt Bond[2], and a link using the .pdfhref macro – but > > only with the native gropdf (groff -Tpdf), which creates really large > > files (> 500k). > > The large size may be due to the lack of font subsetting in groff 1.23.0 > and earlier. But I have good news for you; in groff Git, gropdf has, > and in the forthcoming 1.24 release we expect, precisely this feature. > > > The output of pdfmom, on the other hand, can be piped > > to ps2pdf without losing the PDF outline or links (output size: ~ > > 80k). > > > > Is it possible to > > > > - create small PDF files (via pdfroff or groff | ps2pdf) while keeping > > PDF outline/links using the mm package? > > I think Deri James's recent changes to gropdf will indeed reduce the > size of PDF files, but outlining and linking will require some work, > either within the package or via supplementary user-authored macros. > > The latter is not necessarily difficult. For an example, see the > following extension to ms(7). > > https://github.com/g-branden-robinson/retypesetting-mathematics/blob/master/g.mac > > Since Kernighan & Cherry had presciently defined an `SC` macro, local to > the document, to manage section headings for them, it was shockingly > easy for me declare a PDF bookmark within it. > > One line: that's how straightforward it was to add a PDF outline to a > 1970s document. > > > - create links from the TOC to the document headings/sections > > automatically using mm? > > I don't think this is possible with no macro effort from a document > author at present since the mm(7) package has no notion of internal > hyperlinking features or PDF. > > However, having just added these to man(7) and mdoc(7), I have an idea > how to do so for ms(7), me(7), and mm(7), and once that is done, we'll > have hyperlink/navigation parity among all of groff's full-service macro > packages. > > Regards, > Branden
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