3 cleanname \- clean a path name
12 For each file name argument,
14 by lexical processing only,
15 prints the shortest equivalent string that names the same
16 (possibly hypothetical) file.
17 It eliminates multiple and trailing slashes, and it lexically
22 directory components in the name.
26 unrooted names are prefixed with
30 .B /sys/src/cmd/cleanname.c