#507 Regression in pgffor

[Henri Menke]

The pgffor has changed to handle FPU types, but since then direct usage of registers fails. The MWE has to be processed with pdfLaTeX.

\documentclass{article}
\usepackage{pgffor}
\begin{document}
\pdfximage{example-image.pdf}
\begingroup
\tracingall
\foreach \n in {1,...,\pdflastximagepages} {}
\endgroup
\end{document}

Workaround: Prefix registers with \the.

[Henri Menke]

Other workaround: Restore the old \foreach behaviour.

\def\pgffor@dots@value@process#1{%
        \expandafter\pgffor@dots@stripcontext#1\pgffor@@stop%
        \expandafter\pgffor@dots@charcheck\pgffor@dotsvalue\pgffor@@stop%
  \let#1=\pgffor@dotsvalue% 
}

[Henri Menke]

The offending commit is this one: https://sourceforge.net/p/pgf/git/ci/acdfa1450bd2beda4d6865bb2717e4d6f628c875/