rem: return 0;
add: return false;
context: open_file (char *name, COLUMN *p){  if (STREQ (name, "-"))    {      p->name = _("standard input");      p->fp = stdin;      have_read_stdin = 1;    }  else    {      p->name = name;      p->fp = fopen (name, "r");    }  if (p->fp == NULL)    {      ++failed_opens;      if (!ignore_failed_opens)	error (0, errno, "%s", name);      return 0;    }  p->status = OPEN;  p->full_page_printed = FALSE;  ++total_files;  return 1;}