- { "help", 0, 0, 'h' },
- { "usage", 0, 0, 'u' },
- { "version", 0, 0, 'v' },
- { "display", required_argument, 0, 'd' },
- { "bourne-shell", 0, 0, 'b' },
- { "c-shell", 0, 0, 'c' },
- { "export", 0, 0, 'x' },
- { 0, 0, 0, 0 }
+ { "help", 0, 0, 'h' },
+ { "usage", 0, 0, 'u' },
+ { "version", 0, 0, 'v' },
+ { "display", OPTF_ARGREQ, 0, 'd' },
+ { "bourne-shell", 0, 0, 'b' },
+ { "c-shell", 0, 0, 'c' },
+ { "export", 0, 0, 'x' },
+ { 0, 0, 0, 0 }