TeX Live 2019 / TikZ

[Achim Gratz]

I'm chasing a recent xfig test failure (i.e. that test was OK about a
year ago) that boils down to this TeX invocation:

--8<---------------cut here---------------start------------->8---
$ tex
This is TeX, Version 3.14159265 (TeX Live 2019/Cygwin) (preloaded format=tex)
**\input tikz
(/usr/share/texmf-dist/tex/plain/pgf/frontendlayer/tikz.tex
(/usr/share/texmf-dist/tex/plain/pgf/basiclayer/pgf.tex
(/usr/share/texmf-dist/tex/plain/pgf/utilities/pgfrcs.tex
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common.tex
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common-lists.tex))
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-plain.def
(/usr/share/texmf-dist/tex/generic/oberdiek/atbegshi.sty
(/usr/share/texmf-dist/tex/generic/oberdiek/infwarerr.sty)
(/usr/share/texmf-dist/tex/generic/oberdiek/ltxcmds.sty)
(/usr/share/texmf-dist/tex/generic/oberdiek/ifpdf.sty)))
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfrcs.code.tex
(/usr/share/texmf-dist/tex/generic/pgf/pgf.revision.tex)))
(/usr/share/texmf-dist/tex/plain/pgf/basiclayer/pgfcore.tex
(/usr/share/texmf-dist/tex/plain/pgf/systemlayer/pgfsys.tex
(/usr/share/texmf-dist/tex/plain/pgf/utilities/pgfrcs.tex)
(/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgfsys.code.tex
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfkeys.code.tex
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfkeysfiltered.code.tex))
! Undefined control sequence.
\pgfkeyssetevalue ...gfkeys@temptoks =\scantokens 
                                                  \expandafter {\expandafter...

\pgfkeys@ifcsname ...\fi \ifpgfkeys@csname@test #2
                                                  \else #3\fi 
\pgfkeys@ifcsname ...gfkeys@csname@test #2\else #3
                                                  \fi 
\pgfkeys@ifcsname ...gfkeys@csname@test #2\else #3
                                                  \fi 
\pgfkeys@unpack ...pgfeov \else \pgfkeys@case@one 
                                                  \fi \fi 
\pgfkeys@@normal ...pgfkeysnovalue =\pgfkeys@stop 
                                                  \pgfkeys@parse 
...
l.17 \pgfkeys{/pgf/.is family}
--8<---------------cut here---------------end--------------->8---

My installation has these packages:

--8<---------------cut here---------------start------------->8---
texlive-collection-basic-20190509-1
texlive-collection-bibtexextra-20190509-1
texlive-collection-binextra-20190509-1
texlive-collection-fontsextra-20190509-1
texlive-collection-fontsrecommended-20190509-1
texlive-collection-fontutils-20190509-1
texlive-collection-formatsextra-20190509-1
texlive-collection-htmlxml-20170520-1
texlive-collection-langgerman-20190509-1
texlive-collection-latex-20190509-1
texlive-collection-latexextra-20190509-1
texlive-collection-latexrecommended-20190509-1
texlive-collection-mathextra-20190509-1
texlive-collection-mathscience-20190509-1
texlive-collection-pictures-20190509-1
texlive-collection-plaingeneric-20190509-1
texlive-collection-xetex-20190509-1
texlive-debuginfo-20190509-1
--8<---------------cut here---------------end--------------->8---

Is there a dependency missing or does something else not match up?  I've
already re-generated all formats to no avail.


Regards,
Achim.
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