--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/harfbuzz/src/hb-set.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,200 @@
+/*
+ * Copyright © 2012  Google, Inc.
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
+#error "Include <hb.h> instead."
+#endif
+
+#ifndef HB_SET_H
+#define HB_SET_H
+
+#include "hb-common.h"
+
+HB_BEGIN_DECLS
+
+
+/**
+ * HB_SET_VALUE_INVALID:
+ *
+ * Unset #hb_set_t value.
+ *
+ * Since: 0.9.21
+ */
+#define HB_SET_VALUE_INVALID ((hb_codepoint_t) -1)
+
+/**
+ * hb_set_t:
+ *
+ * Data type for holding a set of integers. #hb_set_t's are
+ * used to gather and contain glyph IDs, Unicode code
+ * points, and various other collections of discrete 
+ * values.
+ *
+ **/
+typedef struct hb_set_t hb_set_t;
+
+
+HB_EXTERN hb_set_t *
+hb_set_create (void);
+
+HB_EXTERN hb_set_t *
+hb_set_get_empty (void);
+
+HB_EXTERN hb_set_t *
+hb_set_reference (hb_set_t *set);
+
+HB_EXTERN void
+hb_set_destroy (hb_set_t *set);
+
+HB_EXTERN hb_bool_t
+hb_set_set_user_data (hb_set_t           *set,
+		      hb_user_data_key_t *key,
+		      void *              data,
+		      hb_destroy_func_t   destroy,
+		      hb_bool_t           replace);
+
+HB_EXTERN void *
+hb_set_get_user_data (const hb_set_t     *set,
+		      hb_user_data_key_t *key);
+
+
+/* Returns false if allocation has failed before */
+HB_EXTERN hb_bool_t
+hb_set_allocation_successful (const hb_set_t *set);
+
+HB_EXTERN hb_set_t *
+hb_set_copy (const hb_set_t *set);
+
+HB_EXTERN void
+hb_set_clear (hb_set_t *set);
+
+HB_EXTERN hb_bool_t
+hb_set_is_empty (const hb_set_t *set);
+
+HB_EXTERN void
+hb_set_invert (hb_set_t *set);
+
+HB_EXTERN hb_bool_t
+hb_set_has (const hb_set_t *set,
+	    hb_codepoint_t  codepoint);
+
+HB_EXTERN void
+hb_set_add (hb_set_t       *set,
+	    hb_codepoint_t  codepoint);
+
+HB_EXTERN void
+hb_set_add_range (hb_set_t       *set,
+		  hb_codepoint_t  first,
+		  hb_codepoint_t  last);
+
+HB_EXTERN void
+hb_set_add_sorted_array (hb_set_t             *set,
+		         const hb_codepoint_t *sorted_codepoints,
+		         unsigned int          num_codepoints);
+
+HB_EXTERN void
+hb_set_del (hb_set_t       *set,
+	    hb_codepoint_t  codepoint);
+
+HB_EXTERN void
+hb_set_del_range (hb_set_t       *set,
+		  hb_codepoint_t  first,
+		  hb_codepoint_t  last);
+
+HB_EXTERN hb_bool_t
+hb_set_is_equal (const hb_set_t *set,
+		 const hb_set_t *other);
+
+HB_EXTERN unsigned int
+hb_set_hash (const hb_set_t *set);
+
+HB_EXTERN hb_bool_t
+hb_set_is_subset (const hb_set_t *set,
+		  const hb_set_t *larger_set);
+
+HB_EXTERN void
+hb_set_set (hb_set_t       *set,
+	    const hb_set_t *other);
+
+HB_EXTERN void
+hb_set_union (hb_set_t       *set,
+	      const hb_set_t *other);
+
+HB_EXTERN void
+hb_set_intersect (hb_set_t       *set,
+		  const hb_set_t *other);
+
+HB_EXTERN void
+hb_set_subtract (hb_set_t       *set,
+		 const hb_set_t *other);
+
+HB_EXTERN void
+hb_set_symmetric_difference (hb_set_t       *set,
+			     const hb_set_t *other);
+
+HB_EXTERN unsigned int
+hb_set_get_population (const hb_set_t *set);
+
+/* Returns HB_SET_VALUE_INVALID if set empty. */
+HB_EXTERN hb_codepoint_t
+hb_set_get_min (const hb_set_t *set);
+
+/* Returns HB_SET_VALUE_INVALID if set empty. */
+HB_EXTERN hb_codepoint_t
+hb_set_get_max (const hb_set_t *set);
+
+/* Pass HB_SET_VALUE_INVALID in to get started. */
+HB_EXTERN hb_bool_t
+hb_set_next (const hb_set_t *set,
+	     hb_codepoint_t *codepoint);
+
+/* Pass HB_SET_VALUE_INVALID in to get started. */
+HB_EXTERN hb_bool_t
+hb_set_previous (const hb_set_t *set,
+		 hb_codepoint_t *codepoint);
+
+/* Pass HB_SET_VALUE_INVALID for first and last to get started. */
+HB_EXTERN hb_bool_t
+hb_set_next_range (const hb_set_t *set,
+		   hb_codepoint_t *first,
+		   hb_codepoint_t *last);
+
+/* Pass HB_SET_VALUE_INVALID for first and last to get started. */
+HB_EXTERN hb_bool_t
+hb_set_previous_range (const hb_set_t *set,
+		       hb_codepoint_t *first,
+		       hb_codepoint_t *last);
+
+/* Pass HB_SET_VALUE_INVALID in to get started. */
+HB_EXTERN unsigned int
+hb_set_next_many (const hb_set_t *set,
+		  hb_codepoint_t  codepoint,
+		  hb_codepoint_t *out,
+		  unsigned int    size);
+
+HB_END_DECLS
+
+#endif /* HB_SET_H */