ref: 6c2f8fd5e4f0e0be44495a5526930fa3760cd87e
dir: /appl/lib/workdir.b/
implement Workdir; include "sys.m"; include "workdir.m"; init(): string { sys := load Sys Sys->PATH; fd := sys->open(".", Sys->OREAD); if(fd == nil) return nil; return sys->fd2path(fd); }