From 7a829e015bc2721bf56c289ac3587f3bf2facf0b Mon Sep 17 00:00:00 2001
From: dualfroz <me@dualfroz.com>
Date: Wed, 14 Oct 2026 18:48:44 +0200
Subject: [PATCH] fix sweep unTag with an array, fixes #1009

---
 src/1-one/sweep/methods/tagger/index.js |  3 ++-
 tests/03-three/misc/sweep-tag.test.js   | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/1-one/sweep/methods/tagger/index.js b/src/1-one/sweep/methods/tagger/index.js
index 7f79c93..22c7690 100644
--- a/src/1-one/sweep/methods/tagger/index.js
+++ b/src/1-one/sweep/methods/tagger/index.js
@@ -47,7 +47,8 @@ const tagger = function (list, document, world) {
       }
     }
     if (todo.unTag !== undefined) {
-      unTag(terms, todo.unTag, model.one.tagSet, reason)
+      const tags = Array.isArray(todo.unTag) ? todo.unTag : [todo.unTag]
+      tags.forEach(tag => unTag(terms, tag, model.one.tagSet, reason))
     }
     // allow setting chunks, too
     if (todo.chunk) {
diff --git a/tests/03-three/misc/sweep-tag.test.js b/tests/03-three/misc/sweep-tag.test.js
index b8235d8..38448ad 100644
--- a/tests/03-three/misc/sweep-tag.test.js
+++ b/tests/03-three/misc/sweep-tag.test.js
@@ -38,3 +38,21 @@ test('sweep-freeze:', function (t) {
   t.equal(m.has('#Adjective'), false, here + 'front steps frozen')
   t.end()
 })
+
+test('sweep-untag:', function (t) {
+  const matches = [
+    { match: 'clinic', unTag: ['ProperNoun', 'Person'] },
+    { match: 'walked', unTag: 'Verb' },
+  ]
+  const net = nlp.buildNet(matches)
+  let doc = nlp('There are thirty days in the January Clinic')
+  doc.sweep(net)
+  const m = doc.match('clinic')
+  t.equal(m.has('#ProperNoun'), false, here + 'untag array first')
+  t.equal(m.has('#Person'), false, here + 'untag array second')
+
+  doc = nlp('Spencer walked')
+  doc.sweep(net)
+  t.equal(doc.has('#PastTense'), false, here + 'untag children')
+  t.end()
+})