Index: usr.bin/unexpand/unexpand.c
===================================================================
--- usr.bin/unexpand/unexpand.c
+++ usr.bin/unexpand/unexpand.c
@@ -73,6 +73,7 @@
 
 	setlocale(LC_CTYPE, "");
 
+	all = 0;
 	nstops = 1;
 	tabstops[0] = 8;
 	while ((ch = getopt(argc, argv, "at:")) != -1) {