diff --git a/doc/d-utils.md b/doc/d-utils.md
index ebee6d4..d74dbec 100644
--- a/doc/d-utils.md
+++ b/doc/d-utils.md
@@ -584,3 +584,9 @@ Returns true if both BSTs contain the same keys and values.
     (import util-bst-bdict)
 
 Reimplementation of old number-only BST dictionary.
+
+## util-bst-ldict [module]
+
+    (import util-bst-ldict)
+
+Reimplementation of old list-based symbol dictionary using new BST backend.
diff --git a/src/Makefile b/src/Makefile
index 0bbe0f6..b06d23b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -56,7 +56,7 @@ HACKERBASE-OBJS=hackerbase.o testing.o listing.o cal-month.o		\
 	 util-utf8.o sgr-cell.o template-list-expander.o		\
 	 box-drawing.o util-list.o export-web-static.o util-dir.o	\
 	 dokuwiki.o racket-kwargs.o duck.o util-bst.o			\
-	 util-bst-bdict.o
+	 util-bst-bdict.o util-bst-ldict.o
 
 GENDOC-SOURCES=gendoc.scm duck-extract.import.scm			\
 	util-time.import.scm util-csv.import.scm util-git.import.scm	\
@@ -64,14 +64,15 @@ GENDOC-SOURCES=gendoc.scm duck-extract.import.scm			\
 	util-parser.import.scm util-list.import.scm			\
 	util-proc.import.scm util-format.import.scm			\
 	util-tag.import.scm util-string.import.scm			\
-	util-bst.import.scm util-bst-bdict.import.scm
+	util-bst.import.scm util-bst-bdict.import.scm			\
+	util-bst-ldict.import.scm
 
 GENDOC-OBJS=gendoc.o duck-extract.o util-time.o util-csv.o util-io.o	\
 	progress.o testing.o util-proc.o util-git.o util-io.o		\
 	util-stdout.o util-parser.o util-list.o util-proc.o		\
 	util-format.o racket-kwargs.o util-dict-list.o util-tag.o	\
 	util-set-list.o duck.o util-string.o util-bst.o			\
-	util-bst-bdict.o
+	util-bst-bdict.o util-bst-ldict.o
 
 .PHONY: imports
 imports: $(HACKERBASE-DEPS)
@@ -526,3 +527,9 @@ UTIL-BST-BDICT-SOURCES=util-bst-bdict.scm util-bst.import.scm	\
 
 util-bst-bdict.o: util-bst-bdict.import.scm
 util-bst-bdict.import.scm: $(UTIL-BST-BDICT-SOURCES)
+
+UTIL-BST-LDICT-SOURCES=util-bst-ldict.scm duck.import.scm	\
+	util-bst.import.scm util-proc.import.scm
+
+util-bst-ldict.o: util-bst-ldict.import.scm
+util-bst-ldict.import.scm: $(UTIL-BST-LDICT-SOURCES)
diff --git a/src/gendoc.scm b/src/gendoc.scm
index fce88ff..77aa588 100644
--- a/src/gendoc.scm
+++ b/src/gendoc.scm
@@ -34,4 +34,5 @@
 	  util-mail
 	  util-bst
 	  util-bst-bdict
+	  util-bst-ldict
 	  )
diff --git a/src/util-bst-ldict.scm b/src/util-bst-ldict.scm
index 46b3232..c891c49 100644
--- a/src/util-bst-ldict.scm
+++ b/src/util-bst-ldict.scm
@@ -5,12 +5,13 @@
 
 (module*
  util-bst-ldict
- #:doc ("xxx")
+ #:doc ("Reimplementation of old list-based symbol dictionary using new BST backend.")
  (
   )
 
  (import scheme
-	 util-bst)
+	 util-bst
+	 util-proc)
 
  (define (symbol<? a b)
    (string<? (symbol->string a)
@@ -31,7 +32,7 @@
  (define (ldict-map proc ld)
    (let ((i 0)
 	 (both? ((procedure-arity>=? 2) proc))
-	 (index? ((procedure-arity=>? 3) proc)))
+	 (index? ((procedure-arity>=? 3) proc)))
      (bst-map-bst ld
 		  (lambda (k v)
 		    (let ((r (if both?
@@ -48,4 +49,6 @@
  (define (ldict-reduce init proc ld)
    (bst-reduce ld proc init))
 
+ (define ldict-equal? bst-equal?)
+
  )
diff --git a/src/util-bst.scm b/src/util-bst.scm
index 13a7f9a..7a16475 100644
--- a/src/util-bst.scm
+++ b/src/util-bst.scm
@@ -429,9 +429,21 @@ arguments.")
    ("Returns true if both BSTs contain the same keys and values.")
    (if (bst-compat? b1 b2)
        (let-comparators
-	(EQ? <? b1)
-	#t
-	)
+	(EQ? _ b1)
+	(let ((g1 (bst-kv-iterator b1))
+	      (g2 (bst-kv-iterator b2)))
+	  (let loop ()
+	    (let ((kv1 (g1))
+		  (kv2 (g2)))
+	      (if (and (not kv1)
+		       (not kv2))
+		  #t
+		  (if (and (EQ? (car kv1)
+				(car kv2))
+			   (equality? (cdr kv1)
+				      (cdr kv2)))
+		      (loop)
+		      #f))))))
        #f))
 
  ;; Module self-tests