#include <allegro5/allegro.h> bool al_join_paths(ALLEGRO_PATH *path, const ALLEGRO_PATH *tail)
Concatenate two path structures. The first path structure is modified. If `tail' is an absolute path, this function does nothing.
If `tail' is a relative path, all of its directory components will be appended to `path'. tail’s filename will also overwrite path’s filename, even if it is just the empty string.
Tail’s drive is ignored.
Returns true if `tail' was a relative path and so concatenated to `path', otherwise returns false.