--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/harfbuzz/util/hb-ot-shape-closure.cc	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,122 @@
+/*
+ * 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
+ */
+
+#include "batch.hh"
+#include "font-options.hh"
+#include "main-font-text.hh"
+#include "shape-options.hh"
+#include "text-options.hh"
+
+const unsigned DEFAULT_FONT_SIZE = FONT_SIZE_NONE;
+const unsigned SUBPIXEL_BITS = 0;
+
+struct shape_closure_consumer_t
+{
+  void add_options (struct option_parser_t *parser)
+  {
+    parser->set_summary ("Find glyph set from input text under shaping closure.");
+    shaper.add_options (parser);
+
+    GOptionEntry entries[] =
+    {
+      {"no-glyph-names",	0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,	&this->show_glyph_names,	"Use glyph indices instead of names",	nullptr},
+      {nullptr}
+    };
+    parser->add_group (entries,
+		       "format",
+		       "Format options:",
+		       "Options controlling output formatting",
+		       this);
+  }
+
+  void init (const font_options_t *font_opts)
+  {
+    glyphs = hb_set_create ();
+    font = hb_font_reference (font_opts->font);
+    failed = false;
+    buffer = hb_buffer_create ();
+  }
+  template <typename text_options_type>
+  bool consume_line (text_options_type &text_opts)
+  {
+    unsigned int text_len;
+    const char *text;
+    if (!(text = text_opts.get_line (&text_len)))
+      return false;
+
+    hb_set_clear (glyphs);
+    shaper.shape_closure (text, text_len, font, buffer, glyphs);
+
+    if (hb_set_is_empty (glyphs))
+      return true;
+
+    /* Print it out! */
+    bool first = true;
+    for (hb_codepoint_t i = -1; hb_set_next (glyphs, &i);)
+    {
+      if (first)
+	first = false;
+      else
+	printf (" ");
+      if (show_glyph_names)
+      {
+	char glyph_name[64];
+	hb_font_glyph_to_string (font, i, glyph_name, sizeof (glyph_name));
+	printf ("%s", glyph_name);
+      } else
+	printf ("%u", i);
+    }
+
+    return true;
+  }
+  void finish (const font_options_t *font_opts)
+  {
+    printf ("\n");
+    hb_font_destroy (font);
+    font = nullptr;
+    hb_set_destroy (glyphs);
+    glyphs = nullptr;
+    hb_buffer_destroy (buffer);
+    buffer = nullptr;
+  }
+
+  bool failed;
+
+  protected:
+  shape_options_t shaper;
+  hb_bool_t show_glyph_names = true;
+
+  hb_set_t *glyphs = nullptr;
+  hb_font_t *font = nullptr;
+  hb_buffer_t *buffer = nullptr;
+};
+
+int
+main (int argc, char **argv)
+{
+  using main_t = main_font_text_t<shape_closure_consumer_t, font_options_t, text_options_t>;
+  return batch_main<main_t> (argc, argv);
+}