Wrong \foreach while loading some libraries in tikz

[cao-]

When trying to load some libraries in Tikz, using the \usetikzlibrary command, the macro \foreach has the OpTeX definition rather than that of Tikz. Here is an example that fails:

\load[tikz]
\usetikzlibrary{graphs}
\bye

It doesn't fail if i redefine \foreach:

\load[tikz]\let\foreach=\_pgf_foreach
\usetikzlibrary{graphs}
\bye

I see that in tikz.opm we have \addto \tikz@startup@env {\let\foreach=\pgffor@foreach}: maybe there is some other Tikz macro that we should modify in the same way.

[olsak]

Thank you for bug report. I tried to solve it by my last commit.

[cao-]

Thank you for solving it :)