Fix formatting when requires have metadata

Author: camsaul

cljfmt/src/cljfmt/core.cljc

@@ -565,13 +565,23 @@
      (and (= :token (z/tag zloc))
           (= :as (z/sexpr zloc)))))
 
+#?(:clj
+   (defn- symbol-node? [zloc]
+     (some-> zloc z/node n/symbol-node?)))
+
+#?(:clj
+   (defn- leftmost-symbol [zloc]
+     (some-> zloc z/leftmost (z/find (comp symbol-node? skip-meta)))))
+
 #?(:clj
    (defn- as-zloc->alias-mapping [as-zloc]
      (let [alias             (some-> as-zloc z/right z/sexpr)
-           current-namespace (some-> as-zloc z/leftmost z/sexpr)
+           current-namespace (some-> as-zloc leftmost-symbol z/sexpr)
            grandparent-node  (some-> as-zloc z/up z/up)
            parent-namespace  (when-not (ns-require-form? grandparent-node)
-                               (first (z/child-sexprs grandparent-node)))]
+                               (when (or (z/vector? grandparent-node)
+                                         (z/list? grandparent-node))
+                                 (first (z/child-sexprs grandparent-node))))]
        (when (and (symbol? alias) (symbol? current-namespace))
          {(str alias) (if parent-namespace
                         (format "%s.%s" parent-namespace current-namespace)

cljfmt/test/cljfmt/core_test.cljc

@@ -257,6 +257,33 @@
          {:indents {'thing.core/defn [[:inner 0]]}
           #?@(:cljs [:alias-map {"t" "thing.core"}])})
         "applies custom indentation to namespaced defn")
+    (testing "handles metadata on or comments before forms inside ns :require list"
+      (doseq [ignore-str [""
+                          "^{:clj-kondo/ignore [:discouraged-namespace]} "
+                          "^:clj-kondo/ignore "
+                          "^{some-symbol another-symbol} "
+                          "#_{:clj-kondo/ignore [:discouraged-namespace]} "
+                          "#_:clj-kondo/ignore "
+                          "^tag "
+                          "#_old-thing "]
+              ns-vec-str [(str ignore-str "[thing.core :as t]")
+                          (str ignore-str "[thing [core :as t]]")
+                          (str ignore-str "(thing [core :as t])")
+                          (str "[" ignore-str "thing.core :as t]")
+                          (str ignore-str " [" ignore-str "thing.core :as t]")]
+              :let [ns-str (str "(ns example (:require " ns-vec-str "))")]]
+        (testing ns-str
+          (is (reformats-to?
+               [ns-str
+                ""
+                "(t/defn foo [x]"
+                "(+ x 1))"]
+               [ns-str
+                ""
+                "(t/defn foo [x]"
+                "  (+ x 1))"]
+               {:indents {'ns [[:block 1]], 'thing.core/defn [[:inner 0]]}
+                #?@(:cljs [:alias-map {"t" "thing.core"}])})))))
     (is (reformats-to?
          ["(comment)"
           "(ns thing.core)"