128 static unsigned ibc;	/* number of bytes still in the input buffer */  variable
948 		ibc = read(ibf, (char *)ibuf, ibs);  in main()
949 		if (ibc == (unsigned)-1)  in main()
964 			if (ibc == 0)  in main()
997 	ibc = 0;	/* no input characters yet */  in main()
1036 			ibc = read(ibf, (char *)ibuf, ibs);  in main()
1040 			if (ibc == (unsigned)-1)  in main()
1054 					ibc = ibs; /* assume a full block */  in main()
1067 			ibc = 0;  in main()
1073 		if (ibc == 0)  in main()
1187 		else if (ibc == ibs)  in main()
1199 				c = ibs - ibc;  in main()
1207 				ibc = ibs;  in main()
1216 			if (ibc & 1)	/* if the byte count is odd, */  in main()
1218 				ip[ibc] = 0;  /* make it even, pad with zero */  in main()
1220 			c = ibc >> 1;	/* compute the pair count */  in main()
1237 			obc = ibc;  in main()
1255 			while ((c = ibc) != 0)  in main()
1261 				ibc -= c;  in main()
1352 			while ((c = ibc) != 0)  in main()
1360 				ibc -= c;  in main()
1439 			while ((c = ibc) != 0)  in main()
1455 					if ((ibc = c) == 0)  in main()
1468 				ibc -= c;  in main()
1606 					ibc += c - 1;  in main()