diff -ur v47/ezmd.py v48/ezmd.py
--- v47/ezmd.py	2020-02-15 11:15:17.000000000 +0900
+++ v48/ezmd.py	2020-07-16 01:04:06.000000000 +0900
@@ -788,12 +788,30 @@
 		do_mode_ul(buf)
 		return outbuf.pop_tmp()
 
+	def a_href_at(o):
+		def to_org(s):
+			if s.startswith( '@' ):
+				s = s [ 1: ]
+				s = s.replace( '$_', ' ' )
+			return s
+
+		href = o.prop.get( 'href' )
+		href = to_org( href )
+		for (h_i, n, name, s) in hd_names:
+			if s == href:
+				o.prop[ 'href' ] = '#' + name
+				break
+		o.v = to_org( o.v )
+		return o
+
 	def f_o(o):
 		if is_lst(o):
 			return flat_map(f_o, o)
 		if is_tag(o):
 			if o.name == 'index':
 				return f( o.v )
+			if o.name == 'a' and 'href' in o.prop and o.prop.get( 'href', '' ).startswith( '@' ):
+				return a_href_at( o )
 			o.v = f_o( o.v )
 		return o