--- uniq.c	Wed Sep  5 20:36:20 2007
+++ uniq.c-modified	Wed Sep  5 20:24:01 2007
@@ -55,8 +55,6 @@
 #include <string.h>
 #include <unistd.h>
 
-#define	MAXLINELEN	(8 * 1024)
-
 int cflag, dflag, uflag;
 int numchars, numfields, repeats;
 
@@ -72,7 +70,8 @@
 	char *t1, *t2;
 	FILE *ifp = NULL, *ofp = NULL;
 	int ch;
-	char *prevline, *thisline;
+	char *prevline, *thisline, *p;
+	size_t prevlinesize, thislinesize, psize;
 
 	obsolete(argv);
 	while ((ch = getopt(argc, argv, "cdf:s:u")) != -1) {
@@ -135,15 +134,25 @@
 		usage();
 	}
 
-	prevline = malloc(MAXLINELEN);
-	thisline = malloc(MAXLINELEN);
-	if (prevline == NULL || thisline == NULL)
+	if ((p = fgetln(ifp, &psize)) == NULL)
+		return 0;
+	prevlinesize = psize;
+	if ((prevline = malloc(prevlinesize + 1)) == NULL)
 		err(1, "malloc");
+	(void)memcpy(prevline, p, prevlinesize);
+	prevline[prevlinesize] = '\0';
 
-	if (fgets(prevline, MAXLINELEN, ifp) == NULL)
-		exit(0);
+	thislinesize = psize;
+	if ((thisline = malloc(thislinesize + 1)) == NULL)
+		err(1, "malloc");
+	while ((p = fgetln(ifp, &psize)) != NULL) {
+		if (psize > thislinesize) {
+			if ((thisline = realloc(thisline, psize + 1)) == NULL)
+				err(1, "realloc");
+			thislinesize = psize;
+		}
+		(void)memcpy(thisline, p, psize);
 
-	while (fgets(thisline, MAXLINELEN, ifp)) {
 		/* If requested get the chosen fields + character offsets. */
 		if (numfields || numchars) {
 			t1 = skip(thisline);
@@ -155,15 +164,22 @@
 
 		/* If different, print; set previous to new value. */
 		if (strcmp(t1, t2)) {
+			size_t ts;
+
 			show(ofp, prevline);
 			t1 = prevline;
 			prevline = thisline;
 			thisline = t1;
+			ts = prevlinesize;
+			prevlinesize = thislinesize;
+			thislinesize = ts;
 			repeats = 0;
 		} else
 			++repeats;
 	}
 	show(ofp, prevline);
+	free(prevline);
+	free(thisline);
 	exit(0);
 }