Will upcoming ggplot2::calc() clash with raster::calc()?

This was asked on twitter:
https://twitter.com/hadleywickham/status/996430251499536385 , by Hadley
Wickham:

"Can any raster user comment on if the new ggplot2::calc() function is
going to cause significant pain because it clashes with raster::calc()?"

I'll report answers back to twitter, or directly to Hadley if it doesn't
fit in 280 chars.

Edzer Pebesma
Institute for Geoinformatics
Heisenbergstrasse 2, 48151 Muenster, Germany
Phone: +49 251 8333081