From 49bb9009006b87d08407e4b467852ead19ea9444 Mon Sep 17 00:00:00 2001
From: Martino Visintin <mav@3e.eu>
Date: Tue, 18 Jun 2024 10:24:43 +0200
Subject: [PATCH] Fix mu/get-in for false-y keys

---
 src/malli/util.cljc       | 7 ++++---
 test/malli/util_test.cljc | 6 ++++++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/malli/util.cljc b/src/malli/util.cljc
index 8a7ed130f..857d3f205 100644
--- a/src/malli/util.cljc
+++ b/src/malli/util.cljc
@@ -339,11 +339,12 @@
    (get-in ?schema ks nil nil))
   ([?schema ks default]
    (get-in ?schema ks default nil))
-  ([?schema [k & ks] default options]
+  ([?schema ks default options]
    (let [schema (m/schema (or ?schema :map) options)]
-     (if-not k
+     (if-not (seq ks)
        schema
-       (let [sentinel #?(:clj (Object.), :cljs (js-obj))
+       (let [[k & ks] ks
+             sentinel #?(:clj (Object.), :cljs (js-obj))
              schema (get schema k sentinel)]
          (cond
            (identical? schema sentinel) default
diff --git a/test/malli/util_test.cljc b/test/malli/util_test.cljc
index 6e4f8ea34..e0a8c7522 100644
--- a/test/malli/util_test.cljc
+++ b/test/malli/util_test.cljc
@@ -428,6 +428,12 @@
                   [:x 0 0 0 1 :y 9]
                   pos-int?)
                  pos-int?))
+  (is (mu/equals (mu/get-in
+                  [:multi {:dispatch :x}
+                   [true [:map [:x :boolean]]]
+                   [false [:map [:x :boolean] [:y :boolean]]]]
+                  [false])
+                 [:map [:x :boolean] [:y :boolean]]))
   (is (mu/equals [:maybe [:tuple int? boolean?]]
                  (mu/get-in (m/schema [:maybe [:tuple int? boolean?]]) [])))
   (is (form= (mu/get-in (m/schema [:ref {:registry {::a int?, ::b string?}} ::a]) [0]) ::a))