Finding containing directories

This package provides utilities for examining parent directories. As an example, git looks for a .git directory in any parent directory of the current directory. That would be expressed here as:

(find-parent-containing (current-directory) ".git")

Exports

(find-parent-containing [start path-string?] [sentinel path-string?]) -> (or/c #f path?)

Finds a parent directory of start that contains sentinel, or returns #f.

(find-parent-dir [start path-string?] [pred (-> path? any)]) -> (or/c #f path?)

Finds a parent directory of start that matches pred or returns #f.

Originally by @offby1 here: https://gist.github.com/offby1/6862232