Upgrade clj-kondo to 2026.01.12

This also updates issues it found.

Author: tobias

.clj-kondo/config.edn

@@ -60,8 +60,14 @@
   ;; suffice
   :redundant-fn-wrapper {:level :warning}
 
+  ;; Warn on format strings w/o format directives
+  :redundant-format {:level :warning}
+  
   ;; warn when binding symbols to themselves
   :redundant-let-binding {:level :warning}
+
+  ;; Warn when we cast/coerce a value that is already of the intended type
+  :redundant-primitive-coercion {:level :warning}
 
   ;; warn when calling str with a single arg
   :redundant-str-call {:level :warning}
@@ -78,5 +84,8 @@
 
   :unused-alias {:level :warning}
 
+  ;; Warn when we exclude a var from clojure that we don't actually use in the ns
+  :unused-excluded-var {:level :warning}
+  
   :used-underscored-binding {:level :warning}}}
 

.clj-kondo/imports/hiccup/hiccup/hiccup/hooks.clj

@@ -1,6 +1,7 @@
 (ns hiccup.hooks
-  (:require [clj-kondo.hooks-api :as api]
-            [clojure.set :as set]))
+  (:require
+   [clj-kondo.hooks-api :as api]
+   [clojure.set :as set]))
 
 ;; See https://github.com/clj-kondo/clj-kondo/blob/master/doc/hooks.md
 
@@ -16,7 +17,7 @@
 (defn- count-args [arity]
   (let [args (first (api/sexpr arity))]
     (if (= '& (fnext (reverse args)))
-      true ; unbounded args
+      true ;; unbounded args
       (count args))))
 
 (defn- dummy-arity [arg-count]

bin/clj-kondo

@@ -3,7 +3,7 @@
 
 set -euo pipefail
 
-CLJ_KONDO_VERSION="2025.12.23"
+CLJ_KONDO_VERSION="2026.01.12"
 ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/../" && pwd)
 
 function ensure_clj_kondo() {

test/clojars/unit/stats_test.clj

@@ -50,10 +50,10 @@
     (is (= 5 (stats/download-count stats "c" "z")))))
 
 (deftest format-stats-with-commas
-  (is "0" (stats/format-stats 0))
-  (is "1" (stats/format-stats 1))
-  (is "-1" (stats/format-stats -1))
-  (is "1" (stats/format-stats 1.25129))
-  (is "999" (stats/format-stats 999))
-  (is "1,000" (stats/format-stats 1000))
-  (is "2,123,512" (stats/format-stats 2123512)))
+  (is (= "0" (stats/format-stats 0)))
+  (is (= "1" (stats/format-stats 1)))
+  (is (= "-1" (stats/format-stats -1)))
+  (is (= "1" (stats/format-stats 1.25129)))
+  (is (= "999" (stats/format-stats 999)))
+  (is (= "1,000" (stats/format-stats 1000)))
+  (is (= "2,123,512" (stats/format-stats 2123512))))