Devtools: Handy function to reset options to defaults

[stevecondylios]

Resetting options to their defaults can be a little cumbersome (I have just come from look around here, and here)

It could be useful to have something easily available, perhaps:

reset_options <- function() {
  default_opts <- callr::r(function(){options()})
  options(default_opts)
}

Note: there may already be easier/better ways of doing this. Apologies in advance if that's the case here

[jimhester]

You may want to consider using callr::r_vanilla() to do this, so that any options changed in your .Rprofile are not included.

But in general I don't think this function needs to be in devtools.

[jennybc]

Base R should arguably expose the (default) options in some programmatic way. I've also often wanted a way to see the options "in force" and understand which are R defaults vs., say, set via an .Rprofile. Basically something like git config --list --show-origin. You @stevecondylios might consider opening an issue here: https://github.com/HenrikBengtsson/Wishlist-for-R/issues

[hadley]

Also, you should be aware of withr, which allows you to temporarily set options.