Guidance for a missing standard folder

Internal helper returning the advisory message for a folder in the standard toolero set, falling back to a generic message for any folder not in the lookup table.

Usage

.standard_folder_message(folder)

Arguments

folder

Character. A single folder name.

Value

A single character string.

Details

Lives beside .default_folders() on purpose: the set and the advice for each member of it are one fact, and keeping them in separate files is how they drift. A folder added to .default_folders() without an entry here still works – it gets the generic message – but the pairing is what makes the omission obvious.