diff -ur v19/ezyaml.c v20/ezyaml.c
--- v19/ezyaml.c	2018-09-12 22:21:15.000000000 +0900
+++ v20/ezyaml.c	2018-09-12 22:21:45.000000000 +0900
@@ -29,11 +29,20 @@
 		r = cp_add( r, strdup(to) );
 		s = t + strlen(from);
 	}
-	r = cp_add(r, s);
+	r = cp_add( r, strdup(s) );
 	free(bak); /* ! */
 	return r;
 }
 
+char *
+cp_char_n(char v, int n)
+{
+	char *r = malloc(n+1);
+	memset(r, v, n);
+	r[n] = '\0';
+	return r;
+}
+
 /**/
 
 void
@@ -395,7 +404,7 @@
 				struct obj *str = list_pop_top(lines);
 				char *s = slice_tail( obj_buf(str), idt );
 				struct obj *add = get_cont_str(idt, lines);
-				struct obj *ret = str_new("  ");
+				struct obj *ret = str_new(" ");
 				ret = str_append(ret, s);
 				ret = str_append( ret, obj_buf(add) );
 
@@ -492,6 +501,54 @@
 struct obj *dump_obj(struct obj *obj, int idt);
 
 struct obj *
+wrap_line(struct obj *str, int idt)
+{
+	struct obj *lst;
+	char *sum;
+	char *s = obj_buf(str);
+
+	if( strchr(s, ' ') == NULL ){
+		return str;
+	}
+
+	s = cp_replace( strdup(s), " ", "\n" );
+	lst = lines_new(s);
+	free(s);
+	obj_del(str);
+
+	sum = strdup("");
+
+	str = list_pop_top(lst);
+	s = strdup( obj_buf(str) );
+	obj_del(str);
+
+	while( list_len(lst) ){
+		char *t;
+		while( list_len(lst) && strlen(s) + 2 <= 82 ){
+			str = list_pop_top(lst);
+			t = strdup( obj_buf(str) );
+			obj_del(str);
+			s = cp_add( s, strdup(" ") );
+			s = cp_add(s, t);
+		}
+		if( list_len(lst) ){
+			sum = cp_add(sum, s);
+			sum = cp_add( sum, strdup("\n") );
+			s = cp_char_n(' ', idt+2);
+
+			str = list_pop_top(lst);
+			t = strdup( obj_buf(str) );
+			obj_del(str);
+			s = cp_add(s, t);
+		}
+	}
+	sum = cp_add(sum, s);
+	str = str_new(sum);
+	free(sum);
+	return str;
+}
+
+struct obj *
 dump_dict(struct obj *dic, int idt)
 {
 	struct obj *lines = list_new();
@@ -515,6 +572,7 @@
 			tmp = dump_value(v, 'r');
 			str = str_append( str, obj_buf(tmp) );
 			obj_del(tmp);
+			str = wrap_line(str, idt);
 		}
 		list_append(lines, str);
 
@@ -643,13 +701,12 @@
 dump_other(struct obj *obj, int idt, int from_dic)
 {
 	struct obj *str = dump_value(obj, from_dic);
-	char *s = malloc(idt+1);
-	memset(s, ' ', idt);
-	s[idt] = '\0';
-
+	char *s = cp_char_n(' ', idt);
 	s = cp_add( s, strdup( obj_buf(str) ) );
 	obj_del(str);
-	return str_new(s);
+	str = wrap_line( str_new(s), idt);
+	free(s);
+	return str;
 }
 
 struct obj *
diff -ur v19/ezyaml.py v20/ezyaml.py
--- v19/ezyaml.py	2018-09-12 22:21:15.000000000 +0900
+++ v20/ezyaml.py	2018-09-12 22:21:45.000000000 +0900
@@ -200,6 +200,21 @@
 
 ###
 
+def wrap_line(s, idt):
+	if ' ' not in s:
+		return s
+	lst = s.split(' ')
+	sum = ''
+	s = lst.pop(0)
+	while lst:
+		while lst and len(s) + 2 <= 82:
+			s += ' ' + lst.pop(0)
+		if lst:
+			sum += s + '\n'
+			s = ' ' * (idt+2) + lst.pop(0)
+	sum += s
+	return sum
+
 def dump_dict(dic, idt):
 	lines = []
 	for (k, v) in dic.items():
@@ -212,6 +227,7 @@
 			s = dump_dict(v, idt+2)
 		else:
 			s += ' ' + dump_value(v, from_dic='r')
+			s = wrap_line(s, idt)
 		lines.append(s)
 	return '\n'.join(lines)
 
@@ -267,8 +283,9 @@
 	return '{}'.format(obj)
 
 def dump_other(obj, idt, from_dic=None):
-	return (' ' * idt) + dump_value(obj, from_dic)
-
+	s = (' ' * idt) + dump_value(obj, from_dic)
+	return wrap_line(s, idt)
+	
 def dump_obj(obj, idt):
 	t = type(obj)
 	if t == dict and obj: