fixed quoted double quote bug, added tests

Tools/unix/uz80as/Makefile

@@ -58,9 +58,15 @@ clean:
 uz80as: $(OBJECTS)
 	$(CC) $(CFLAGS) -o uz80as $(OBJECTS) 
 
-test: test.asm uz80as
-	./uz80as test.asm
-	cat test.lst
+TESTS=test*.asm
+
+test: uz80as
+	echo "running tests"
+	for i in $(TESTS) ; do \
+		echo "====== $$i ======" ; \
+		./uz80as $$i ; \
+		cat $$(basename $$i .asm).lst ; \
+	done
 
 .c.o:
 	$(CC) $(CFLAGS) -I. -c $< -o $@

Tools/unix/uz80as/pp.c

@@ -278,8 +278,12 @@ static int expand_line(char *dp, char *dq, const char *p)
 			/* strings */
 			s = p;
 			p++;
-			while (*p != '\0' && *p != '\"')
+			/* skip over the string literal */
+			while (*p != '\0' && *p != '\"') {
+				if (p[0] == '\\' && p[1] == '\"')
+					p++;
 				p++;
+			}
 			if (*p == '\"')
 				p++;
 			dp = copypp(dp, dq, s, p);