infile_set
infile_set(file, isb.st_size);
infile_set(file, in_size);
infile_set("(stdin)", in_size);
infile_set("(stdout)", 0);
infile_set("(stdout)", sb.st_size);
infile_set(file, sbp->st_size);
static void infile_set(const char *newinfile, off_t total);