From 4082718439e4facecfe72a94076fb51f1b97cb14 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@lysator.liu.se>
Date: Wed, 12 Aug 2020 16:58:03 +0200
Subject: Minor changes.

---
 module/util.scm | 1 +
 1 file changed, 1 insertion(+)

(limited to 'module/util.scm')

diff --git a/module/util.scm b/module/util.scm
index fce1c014..1cc357fa 100644
--- a/module/util.scm
+++ b/module/util.scm
@@ -375,6 +375,7 @@
     (for value in lst
          (let ((key (proc value)))
            (hash-set! h key (cons value (hash-ref h key '())))))
+    ;; NOTE changing this list to cons allows the output to work with assq-merge.
     (hash-map->list list h)))
 
 ;; (group-by '(0 1 2 3 4 2 5 6) 2)
-- 
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