diff -ur v22/ezmd.py v23/ezmd.py
--- v22/ezmd.py	2019-10-04 20:10:13.000000000 +0900
+++ v23/ezmd.py	2019-10-06 13:12:35.000000000 +0900
@@ -9,22 +9,19 @@
 
 is_all_ge_n = lambda s, c, n: all( map( lambda c_: c_ == c, s ) ) and len(s) >= n
 
-def next_mode_switch(s, mode):
-	if mode == 'pre':
-		return (None, 'p') if s == '/' else (s, mode)
-
-	if s in modes:
-		return (None, s) if s != mode else (None, mode)
-
-	if is_all_ge_n(s, '-', 4):
-		return (s, 'hr')
-
-	if mode == 'hr':
-		if is_all_ge_n(s, '-', 4):
-			return (s, 'hr')
-		return (s, 'p')
-
-	return (s, mode)
+def next_mode_switch(e):
+	if (e.mode, e.s) == ('pre', '/'):
+		(e.s, e.next_mode) = (None, 'p')
+	elif e.mode in heads and not e.s.strip():
+		(e.s, e.next_mode) = (None, 'p' if e.tmp else e.mode)
+	elif e.s in modes:
+		(e.s, e.next_mode) = (None, e.s)
+	elif is_all_ge_n(e.s, '-', 4):
+		e.next_mode = 'hr'
+	elif e.mode == 'hr':
+		e.next_mode = 'hr' if is_all_ge_n(e.s, '-', 4) else 'p'
+	else:
+		e.next_mode = e.mode
 
 class Empty:
 	def __init__(self, dic={}):
@@ -510,7 +507,7 @@
 	(buf, hd_names) = ( [], [] )
 
 	def is_call(e):
-		(e.s, e.next_mode) = next_mode_switch(e.s, e.mode)
+		next_mode_switch(e)
 		return e.next_mode != e.mode
 
 	func = lambda e: do_mode(e.mode, e.tmp, hd_names)