9 cerr << _ ("error: ") << s << '\n';
15 non_fatal_error (String s)
17 cerr << _ ("error: ") << s << '\n';
23 cerr << _ ("warning: ") <<m <<endl;
34 programming_error (String s)
36 cerr << _ ("programming error: ") << s << _ (" (Continuing; cross thumbs)") << '\n';