GBCC
grabh(hp, GTO|GSUBJECT|GCC|GBCC);
hp->h_bcc = cat(hp->h_bcc, extract(&linebuf[2], GBCC));
puthead(hp, stdout, GTO|GSUBJECT|GCC|GBCC|GNL);
if (gethfromtty(hp, GBCC) == -1)
#define GMASK (GTO|GSUBJECT|GCC|GBCC)
bcc = cat(bcc, nalloc(optarg, GBCC));
else if ((np->n_type & GMASK) == GBCC)
(void)puthead(hp, nfo, GTO|GSUBJECT|GCC|GBCC|GNL|GCOMMA);
if (hp->h_bcc != NULL && w & GBCC)
if (gflags & GBCC) {
hp->h_bcc = extract(s, GBCC);