diff -ur v11/ezmd.py v12/ezmd.py
--- v11/ezmd.py	2019-09-30 00:19:27.000000000 +0900
+++ v12/ezmd.py	2019-09-30 01:52:00.000000000 +0900
@@ -72,19 +72,41 @@
 		return { 's': v2 }
 	return { 'a href="{}"'.format(v1): v2 } if v1 else v2
 
-def do_str(s):
-	# a href
+def do_br(s):
+	p = '\\n'
+	if p in s:
+		lst = flat_map( lambda s_: [ s_, { 'br': '/' } ], s.split(p) )[:-1]
+		return from_lst( cut_empty(lst) )
+	return s
+
+def do_a_href(s):
 	(h, t) = ('[[', ']]')
 	(ih, it) = list( map( lambda p: s_idx(s, p), (h, t) ) )
 	if 0 <= ih and ih < it:
 		s3 = lst_strip( ( s[:ih], s[ih+len(h):it], s[it+len(t):] ) )
-		m = s3[1]
-		if m:
-			(v1, v2) = lst_strip( m.split('|') ) if '|' in m else (m, m)
-			s3[1] = do_v1v2(v1, v2)
-		return from_lst( cut_empty(s3) )
+
+		def mcv(s):
+			(v1, v2) = lst_strip( s.split('|') ) if '|' in s else (s, s)
+			return do_v1v2(v1, v2)				
+
+		cvs = ( (lambda s: s), mcv, do_a_href )
+		f = lambda i: cvs[i]( s3[i] )
+		return from_lst( cut_empty( flat_map( f, range(3) ) ) )
 	return s
 
+#
+# sol : str or lst
+#
+def map_sol(f_s_ret_sol, sol):
+	f = lambda o: o if type(o) == dict else f_s_ret_sol(o)
+	return flat_map(f, sol) if type(sol) == list else f_s_ret_sol(sol)
+
+def do_str(sol): # str or list
+	cvs = (do_br, do_a_href)
+	for cv in cvs:
+		sol = map_sol(cv, sol)
+	return sol
+
 def do_mode_ul(buf, res):
 	buf = esc_join(buf)
 	buf = list( filter( lambda s: s.strip(), buf ) )