Gets the path for @descendant relative to @parent.
This call does no blocking I/O.
input #GFile
Return: string with the relative path from @descendant to @parent, or %NULL if @descendant doesn't have @parent as prefix. The returned string should be freed with g_free() when no longer needed.
See Implementation
Gets the path for @descendant relative to @parent.
This call does no blocking I/O.