Source the nearest `.Rprofile` from a directory tree

Starting from `start`, this function searches for a `.Rprofile` file in the current directory and then each parent directory until `stop_at` (inclusive) or the filesystem root is reached. The first `.Rprofile` found is sourced and the search stops immediately. The file is sourced with `chdir = TRUE`, so relative file paths in `.Rprofile` are resolved from the `.Rprofile` folder. Objects created by `.Rprofile` are assigned into the caller environment.

Usage

source_rprofile(start = getwd(), stop_at = "/")

Arguments

start

Character scalar. Directory where the search begins. Defaults to [base::getwd()].

stop_at

Character scalar. Directory at which upward searching stops. Defaults to `"/"`.

Value

Invisibly returns the path to the sourced `.Rprofile` file, or `NULL` if no `.Rprofile` is found. Side effects from `.Rprofile` are applied in the caller environment.