58 	int rval, width;  in main()  local
62 	width = -1;  in main()
73 			if ((width = atoi(optarg)) <= 0) {  in main()
74 				errx(1, "illegal width value");  in main()
79 			/* Accept a width as eg. -30. Note that a width  in main()
85 				/* The width is a number with multiple digits:  in main()
87 				width = width * 10 + (ch - '0');  in main()
90 				/* Set the width, unless it was previously  in main()
92 				 * would all give a width of 5 and not 10:  in main()
96 				if (width == -1)  in main()
97 					width = ch - '0';  in main()
109 	if (width == -1)  in main()
110 		width = DEFLINEWIDTH;  in main()
113 		fold(width);  in main()
119 			fold(width);  in main()
126 	(void)fprintf(stderr, "usage: fold [-bs] [-w width] [file ...]\n");  in usage()
131  * Fold the contents of standard input to fit within WIDTH columns (or bytes)
136  * column > width, or a newline or EOF is read.
138  * The buffer can grow larger than WIDTH due to backspaces and carriage
142 fold(int width)  in fold()  argument
156 		if ((col = newpos(col, ch)) > width) {  in fold()