Get raw directory path with consistent handling across all functions

This function provides a consistent way to handle raw_dir across all fairenough functions. If raw_dir is provided, it sets the global option and returns the normalized path. If raw_dir is NULL, it checks for the global option, falling back to "data_raw"

Usage

get_raw_dir(raw_dir = NULL)

Arguments

raw_dir

Optional base path to set

Value

Normalized base path