In the Debian tracking system we got a report that the minimal working sample file can't be compiled using plain tex any more. This broken in the latest upload of tkiz/pgf.
------------------- snipp ---------------------
\input tikz
\bye
------------------- snipp ---------------------
Fails to compile using plain tex call. I did not find a patch in your git. Thanks! Hilmar
What is the error? Where is the link to the Debian bug? For me it works without problems on
pdftex,luatex, andxetex. Keep in mind that PGF requires e-TeX.https://bugs.debian.org/920368
You are right, using etex instead of tex solves this issue.
After recieving more complaints from users of ancient technology, I fixed this in https://sourceforge.net/p/pgf/git/ci/4abefd1fbdcbae6b93afd6e1409097787ad189f1/. Keep in mind that everything that relies on
\scantokensis bound to fail, such as thebabelandquoteslibraries.