document using ebgaramond package won't print, and won't work on LuaLaTeX

Question

I have a document that I prepared with the ebgaramond package, because I like the look of Garamond fonts. It looks fine on the screen, but when I try to print it, all the characters that should be in the garamond font just come out as hollow rectangles. What can I do to try and resolve this?

Some details: I'm using pdflatex (via TexShop) on a Mac. I've tried upgrading to TexLive 2019 and making sure my printer drivers are up to date, but those things didn't change anything.

On a suggestion from @Mico, I tried compiling the document using LuaLaTeX and XeLaTeX instead of pdflatex. They both complain about the ebgaramond package. Here's a MWE:

\documentclass[a4paper]{article}

\usepackage{ebgaramond}

\begin{document}

This is a test.

\end{document}

and here's the output from LuaLaTeX:

This is LuaTeX, Version 1.10.0 (TeX Live 2019) 
 restricted system commands enabled.
(./ebgaramond.tex
LaTeX2e <2020-02-02> patch level 1
 L3 programming layer <2020-02-11>
(/usr/local/texlive/2019/texmf-dist/tex/latex/base/article.cls
Document Class: article 2019/12/20 v1.4l Standard LaTeX document class
(/usr/local/texlive/2019/texmf-dist/tex/latex/base/size10.clo))
(/usr/local/texlive/2019/texmf-dist/tex/latex/ebgaramond/ebgaramond.sty
(/usr/local/texlive/2019/texmf-dist/tex/generic/iftex/ifxetex.sty
(/usr/local/texlive/2019/texmf-dist/tex/generic/iftex/iftex.sty))
(/usr/local/texlive/2019/texmf-dist/tex/generic/iftex/ifluatex.sty)
(/usr/local/texlive/2019/texmf-dist/tex/latex/xkeyval/xkeyval.sty
(/usr/local/texlive/2019/texmf-dist/tex/generic/xkeyval/xkeyval.tex
(/usr/local/texlive/2019/texmf-dist/tex/generic/xkeyval/xkvutils.tex
(/usr/local/texlive/2019/texmf-dist/tex/generic/xkeyval/keyval.tex))))
(/usr/local/texlive/2019/texmf-dist/tex/latex/base/textcomp.sty)
(/usr/local/texlive/2019/texmf-dist/tex/latex/fontspec/fontspec.sty
(/usr/local/texlive/2019/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
(/usr/local/texlive/2019/texmf-dist/tex/latex/l3kernel/expl3.sty
(/usr/local/texlive/2019/texmf-dist/tex/latex/l3backend/l3backend-pdfmode.def))
) (/usr/local/texlive/2019/texmf-dist/tex/latex/fontspec/fontspec-luatex.sty
(/usr/local/texlive/2019/texmf-dist/tex/latex/base/fontenc.sty)
(/usr/local/texlive/2019/texmf-dist/tex/latex/fontspec/fontspec.cfg)))

/usr/local/texlive/2019/texmf-dist/tex/latex/ebgaramond/ebgaramond.sty:140: LaT
eX3 Error: Command '\swshape' already defined!

For immediate help type H <return>.
 ...                                              

l.140   \newfontfamily
                    \ebgaramondOsF

Answer 1

I would like to suggest that until the maintainer of the ebgaramond package provides an update to make it compilable under the latest versions of LuaLaTeX and XeLaTeX, you either follow Ulrike's suggestion and issue the instruction \let\swshape\undefined before loading the ebgaramond package or load the font via the fontspec-\setmainfont route.

An advantage of the fontspec route is that it lets you enable additional ligatures beyond the "basic 5" set, viz., ff, fi, ffi, fl, and ffl. With either LuaLaTeX or XeLaTeX, the MWE (minimum working example) shown below generates the following output:

In contrast, the output generated with pdfLaTeX is as follows:

\documentclass{article}
\usepackage{iftex}
\ifluatex
  \usepackage[no-math]{fontspec}
  \setmainfont{EB Garamond}[Ligatures={TeX,Common,Rare},
      Numbers={OldStyle,Proportional}] % choose suitable options
\else\ifxetex
  \usepackage[no-math]{fontspec}
  \setmainfont{EB Garamond}[Ligatures={TeX,Common,Rare},
      Numbers={OldStyle,Proportional}]
\else % we must be using pdftex
  \usepackage[oldstyle,proportional]{ebgaramond}
\fi\fi
\begin{document}
0123456789. ff fi ffi fl ffl. The. fb ffb fh ffh fj ffj fk ffk ft fft. \em as es is us
\end{document}