-rw-rw-r--   1 nelson   nelson      53752 Dec  9 09:24 gram.c
  -rw-rw-r--   1 nelson   nelson       1768 Dec  9 09:24 gram.h
  -rw-rw-r--   1 nelson   nelson      12273 Dec  9 09:24 lex.c
  -rw-rw-r--   1 nelson   nelson     205595 Dec  5 21:55 piewm-1.0.tar.gz

piewm-1.0.tar.gz is the source of the working piewm.  I found that
after publishing 1.0, for some reason, that bison -y didn't produce a
working gram.[ch], nor did flex -l produce a working lex.c, so I
include them in this directory.