--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/harfbuzz/src/OT/Layout/GPOS/LigatureArray.hh	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,56 @@
+#ifndef OT_LAYOUT_GPOS_LIGATUREARRAY_HH
+#define OT_LAYOUT_GPOS_LIGATUREARRAY_HH
+
+namespace OT {
+namespace Layout {
+namespace GPOS_impl {
+
+
+typedef AnchorMatrix LigatureAttach;    /* component-major--
+                                         * in order of writing direction--,
+                                         * mark-minor--
+                                         * ordered by class--zero-based. */
+
+/* Array of LigatureAttach tables ordered by LigatureCoverage Index */
+struct LigatureArray : List16OfOffset16To<LigatureAttach>
+{
+  template <typename Iterator,
+            hb_requires (hb_is_iterator (Iterator))>
+  bool subset (hb_subset_context_t *c,
+               Iterator             coverage,
+               unsigned             class_count,
+               const hb_map_t      *klass_mapping) const
+  {
+    TRACE_SUBSET (this);
+    const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
+
+    auto *out = c->serializer->start_embed (this);
+    if (unlikely (!c->serializer->extend_min (out)))  return_trace (false);
+
+    for (const auto _ : + hb_zip (coverage, *this)
+                  | hb_filter (glyphset, hb_first))
+    {
+      auto *matrix = out->serialize_append (c->serializer);
+      if (unlikely (!matrix)) return_trace (false);
+
+      const LigatureAttach& src = (this + _.second);
+      auto indexes =
+          + hb_range (src.rows * class_count)
+          | hb_filter ([=] (unsigned index) { return klass_mapping->has (index % class_count); })
+          ;
+      matrix->serialize_subset (c,
+                                _.second,
+                                this,
+                                src.rows,
+                                indexes);
+    }
+    return_trace (this->len);
+  }
+};
+
+
+}
+}
+}
+
+#endif /* OT_LAYOUT_GPOS_LIGATUREARRAY_HH */