125   int argn;  in parse_switches()  local
141   for (argn = 1; argn < argc; argn++) {  in parse_switches()
142     arg = argv[argn];  in parse_switches()
145       if (argn <= last_file_arg_seen) {  in parse_switches()
165       if (++argn >= argc)	/* advance to next argument */  in parse_switches()
167       if (keymatch(argv[argn], "none", 1)) {  in parse_switches()
169       } else if (keymatch(argv[argn], "comments", 1)) {  in parse_switches()
171       } else if (keymatch(argv[argn], "all", 1)) {  in parse_switches()
190       if (++argn >= argc)	/* advance to next argument */  in parse_switches()
192       if (keymatch(argv[argn], "horizontal", 1))  in parse_switches()
194       else if (keymatch(argv[argn], "vertical", 1))  in parse_switches()
212       if (++argn >= argc)	/* advance to next argument */  in parse_switches()
214       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)  in parse_switches()
232       if (++argn >= argc)	/* advance to next argument */  in parse_switches()
234       outfilename = argv[argn];	/* save it away for later use */  in parse_switches()
252       if (++argn >= argc)	/* advance to next argument */  in parse_switches()
254       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)  in parse_switches()
268       if (++argn >= argc)	/* advance to next argument */  in parse_switches()
270       if (keymatch(argv[argn], "90", 2))  in parse_switches()
272       else if (keymatch(argv[argn], "180", 3))  in parse_switches()
274       else if (keymatch(argv[argn], "270", 3))  in parse_switches()
282       if (++argn >= argc)	/* advance to next argument */  in parse_switches()
284       scansarg = argv[argn];  in parse_switches()
325   return argn;			/* return index of next arg (file name) */  in parse_switches()