diff -ur v15/ezmd.py v16/ezmd.py
--- v15/ezmd.py	2019-10-02 03:11:30.000000000 +0900
+++ v16/ezmd.py	2019-10-02 04:11:00.000000000 +0900
@@ -78,15 +78,31 @@
 cut_t_empty = lambda lst: cut_t_empty(lst[:-1]) if lst and lst[-1] == '' else lst
 cut_ht_empty = lambda lst: cut_t_empty( cut_h_empty(lst) )
 
+def buf_loop_new(buf, is_call, func):
+	e = Empty()
+	e.mode = e.next_mode = None
+	e.tmp = []
+
+	def run():
+		for e.s in buf:
+			if is_call(e):
+				func(e)
+				e.tmp = []
+				e.mode = e.next_mode
+
+			if e.s != None:
+				e.tmp.append(e.s)
+		func(e)
+
+	return e.to_attr( locals() )
+
 def esc_join(lst):
-	res = []
-	for s in lst:
-		if res and res[-1] and res[-1][-1] == '\\':
-			t = res[-1][:-1]
-			res[-1] = strip_tail(t) + strip_head(s)
-		else:
-			res.append(s)
-	return res
+	if len(lst) < 2:
+		return lst
+	if lst[0] and lst[0][-1] == '\\':
+		lst = [ strip_tail( lst[0][:-1] ) + strip_head( lst[1] ) ] + lst[2:]
+		return esc_join(lst)
+	return lst[:1] + esc_join( lst[1:] )
 
 s_idx = lambda s, p, dv=-1: s.index(p) if p in s else dv
 
@@ -174,17 +190,20 @@
 	buf = cut_ht_empty(buf)
 	if buf:
 		buf = cut_verb_idt(buf)
-		(lst, mode, mbuf) = ( [], '', [] )
-		for s in buf:
-			mode_ = '' if s == '' else ( 'dd' if s[0] in (' ', '\t') else 'dt' )
-			if mode_ != mode:
-				if mode and mbuf:
-					lst.append( tag_new( mode, {}, do_str(mbuf) ) )
-				(mode, mbuf) = ( mode_, [ s.strip() ] )
-			elif s:
-				mbuf.append( s.strip() )
-		if mode and mbuf:
-			lst.append( tag_new( mode, {}, do_str(mbuf) ) )
+		lst = []
+
+		def is_call(e):
+			e.next_mode = '' if e.s == '' else ( 'dd' if e.s[0] in (' ', '\t') else 'dt' )
+			e.s = e.s.strip()
+			return e.next_mode != e.mode
+
+		def func(e):
+			if e.mode and e.tmp:
+				lst.append( tag_new( e.mode, {}, do_str(e.tmp) ) )
+
+		e = buf_loop_new(buf, is_call, func)
+		e.run()
+
 		res.append( tag_new('dl', {}, lst) )
 
 def do_tr(s):
@@ -315,16 +334,16 @@
 def ezmd(lst):
 	lst = ['p'] + lst
 	(buf, res, hd_names) = ( [], [], [] )
-	mode = ''
-	while lst:
-		s = lst.pop(0)
-		(s, nmd) = next_mode_switch(s, mode);
-		if nmd != mode:
-			do_mode(mode, buf, res, hd_names)
-			(mode, buf) = (nmd, [])
-		if s != None:
-			buf.append(s)
-	do_mode(mode, buf, res, hd_names)
+
+	def is_call(e):
+		(e.s, e.next_mode) = next_mode_switch(e.s, e.mode)
+		return e.next_mode != e.mode
+
+	func = lambda e: do_mode(e.mode, e.tmp, res, hd_names)
+
+	e = buf_loop_new(lst, is_call, func)
+	e.run()
+
 	res = do_index(res, hd_names)
 	return res