any chance you'd consider exporting write_union?

[cboettig]

Was just writing something to do this when I realized usethis must already be using such a function to update .Rbuildignore and .gitignore lists; and of course it does and looking at the source of write_union I can easily see your version is better engineered than mine. Of course I could adapt my code, but since it would then be a modification / derivation from usethis I should be crediting usethis directly and switching my license to GPL-3, and possibly listing usethis authors as ctb in the DESCRIPTION (though I sometimes worry that is misleading without proper context). All of which is obviously more cumbersome than if I could just call it as an exported function. Of course I realize my weird case is hardly a strong general case for exporting this.

[jennybc]

What do you think @hadley?

[hadley]

I think we could do it - we just need to think through the function name.