getfrom
if ((ev = getfrom(&cmd, &from, search, delim)) != 1)
getfrom(*argv);
static void getfrom(char *);
static void getfrom(char *);
getfrom(buf + sizeof("From ") - 1);
getfrom(buf + sizeof("From:") - 1);
getfrom(buf + sizeof("Return-Path:") - 1);
getfrom(buf + sizeof("Sender:") - 1);