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This might naturally fix #16929 also but you should confirm.

This might naturally fix #16929 also but you should confirm.

just checked, and it doesn't.

... but now it does ! The fix is actually orthogonal to the initial goal of this PR but it indeed felt related enough to be bundled with it. Let me know if you'd like me to split the PR instead.

fine to adjust one of the existing ones to pass in a path instead of a string.

done ! I parametrized the only existing test using IERS_B.read directly.