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diff --git a/src/freetype/afglobal.c b/src/freetype/afglobal.c
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+/***************************************************************************/
+/*                                                                         */
+/*  afglobal.c                                                             */
+/*                                                                         */
+/*    Auto-fitter routines to compute global hinting values (body).        */
+/*                                                                         */
+/*  Copyright 2003-2018 by                                                 */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include "afglobal.h"
+#include "afranges.h"
+#include "afshaper.h"
+#include FT_INTERNAL_DEBUG_H
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
+  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
+  /* messages during execution.                                            */
+  /*                                                                       */
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_afglobal
+
+
+  /* get writing system specific header files */
+#undef  WRITING_SYSTEM
+#define WRITING_SYSTEM( ws, WS )  /* empty */
+#include "afwrtsys.h"
+
+#include "aferrors.h"
+
+
+#undef  SCRIPT
+#define SCRIPT( s, S, d, h, H, ss )         \
+          AF_DEFINE_SCRIPT_CLASS(           \
+            af_ ## s ## _script_class,      \
+            AF_SCRIPT_ ## S,                \
+            af_ ## s ## _uniranges,         \
+            af_ ## s ## _nonbase_uniranges, \
+            AF_ ## H,                       \
+            ss )
+
+#include "afscript.h"
+
+
+#undef  STYLE
+#define STYLE( s, S, d, ws, sc, ss, c )  \
+          AF_DEFINE_STYLE_CLASS(         \
+            af_ ## s ## _style_class,    \
+            AF_STYLE_ ## S,              \
+            ws,                          \
+            sc,                          \
+            ss,                          \
+            c )
+
+#include "afstyles.h"
+
+
+
+#undef  WRITING_SYSTEM
+#define WRITING_SYSTEM( ws, WS )               \
+          &af_ ## ws ## _writing_system_class,
+
+  FT_LOCAL_ARRAY_DEF( AF_WritingSystemClass )
+  af_writing_system_classes[] =
+  {
+
+#include "afwrtsys.h"
+
+    NULL  /* do not remove */
+  };
+
+
+#undef  SCRIPT
+#define SCRIPT( s, S, d, h, H, ss )   \
+          &af_ ## s ## _script_class,
+
+  FT_LOCAL_ARRAY_DEF( AF_ScriptClass )
+  af_script_classes[] =
+  {
+
+#include "afscript.h"
+
+    NULL  /* do not remove */
+  };
+
+
+#undef  STYLE
+#define STYLE( s, S, d, ws, sc, ss, c ) \
+          &af_ ## s ## _style_class,
+
+  FT_LOCAL_ARRAY_DEF( AF_StyleClass )
+  af_style_classes[] =
+  {
+
+#include "afstyles.h"
+
+    NULL  /* do not remove */
+  };
+
+
+  /* Compute the style index of each glyph within a given face. */
+
+  static FT_Error
+  af_face_globals_compute_style_coverage( AF_FaceGlobals  globals )
+  {
+    FT_Error    error;
+    FT_Face     face        = globals->face;
+    FT_CharMap  old_charmap = face->charmap;
+    FT_UShort*  gstyles     = globals->glyph_styles;
+    FT_UInt     ss;
+    FT_UInt     i;
+    FT_UInt     dflt        = ~0U; /* a non-valid value */
+
+
+    /* the value AF_STYLE_UNASSIGNED means `uncovered glyph' */
+    for ( i = 0; i < (FT_UInt)globals->glyph_count; i++ )
+      gstyles[i] = AF_STYLE_UNASSIGNED;
+
+    error = FT_Select_Charmap( face, FT_ENCODING_UNICODE );
+    if ( error )
+    {
+      /*
+       * Ignore this error; we simply use the fallback style.
+       * XXX: Shouldn't we rather disable hinting?
+       */
+      error = FT_Err_Ok;
+      goto Exit;
+    }
+
+    /* scan each style in a Unicode charmap */
+    for ( ss = 0; af_style_classes[ss]; ss++ )
+    {
+      AF_StyleClass       style_class =
+                            af_style_classes[ss];
+      AF_ScriptClass      script_class =
+                            af_script_classes[style_class->script];
+      AF_Script_UniRange  range;
+
+
+      if ( !script_class->script_uni_ranges )
+        continue;
+
+      /*
+       *  Scan all Unicode points in the range and set the corresponding
+       *  glyph style index.
+       */
+      if ( style_class->coverage == AF_COVERAGE_DEFAULT )
+      {
+        if ( (FT_UInt)style_class->script ==
+             globals->module->default_script )
+          dflt = ss;
+
+        for ( range = script_class->script_uni_ranges;
+              range->first != 0;
+              range++ )
+        {
+          FT_ULong  charcode = range->first;
+          FT_UInt   gindex;
+
+
+          gindex = FT_Get_Char_Index( face, charcode );
+
+          if ( gindex != 0                                                &&
+               gindex < (FT_ULong)globals->glyph_count                    &&
+               ( gstyles[gindex] & AF_STYLE_MASK ) == AF_STYLE_UNASSIGNED )
+            gstyles[gindex] = (FT_UShort)ss;
+
+          for (;;)
+          {
+            charcode = FT_Get_Next_Char( face, charcode, &gindex );
+
+            if ( gindex == 0 || charcode > range->last )
+              break;
+
+            if ( gindex < (FT_ULong)globals->glyph_count                    &&
+                 ( gstyles[gindex] & AF_STYLE_MASK ) == AF_STYLE_UNASSIGNED )
+              gstyles[gindex] = (FT_UShort)ss;
+          }
+        }
+
+        /* do the same for the script's non-base characters */
+        for ( range = script_class->script_uni_nonbase_ranges;
+              range->first != 0;
+              range++ )
+        {
+          FT_ULong  charcode = range->first;
+          FT_UInt   gindex;
+
+
+          gindex = FT_Get_Char_Index( face, charcode );
+
+          if ( gindex != 0                                          &&
+               gindex < (FT_ULong)globals->glyph_count              &&
+               ( gstyles[gindex] & AF_STYLE_MASK ) == (FT_UShort)ss )
+            gstyles[gindex] |= AF_NONBASE;
+
+          for (;;)
+          {
+            charcode = FT_Get_Next_Char( face, charcode, &gindex );
+
+            if ( gindex == 0 || charcode > range->last )
+              break;
+
+            if ( gindex < (FT_ULong)globals->glyph_count              &&
+                 ( gstyles[gindex] & AF_STYLE_MASK ) == (FT_UShort)ss )
+              gstyles[gindex] |= AF_NONBASE;
+          }
+        }
+      }
+      else
+      {
+        /* get glyphs not directly addressable by cmap */
+        af_shaper_get_coverage( globals, style_class, gstyles, 0 );
+      }
+    }
+
+    /* handle the remaining default OpenType features ... */
+    for ( ss = 0; af_style_classes[ss]; ss++ )
+    {
+      AF_StyleClass  style_class = af_style_classes[ss];
+
+
+      if ( style_class->coverage == AF_COVERAGE_DEFAULT )
+        af_shaper_get_coverage( globals, style_class, gstyles, 0 );
+    }
+
+    /* ... and finally the default OpenType features of the default script */
+    af_shaper_get_coverage( globals, af_style_classes[dflt], gstyles, 1 );
+
+    /* mark ASCII digits */
+    for ( i = 0x30; i <= 0x39; i++ )
+    {
+      FT_UInt  gindex = FT_Get_Char_Index( face, i );
+
+
+      if ( gindex != 0 && gindex < (FT_ULong)globals->glyph_count )
+        gstyles[gindex] |= AF_DIGIT;
+    }
+
+  Exit:
+    /*
+     *  By default, all uncovered glyphs are set to the fallback style.
+     *  XXX: Shouldn't we disable hinting or do something similar?
+     */
+    if ( globals->module->fallback_style != AF_STYLE_UNASSIGNED )
+    {
+      FT_Long  nn;
+
+
+      for ( nn = 0; nn < globals->glyph_count; nn++ )
+      {
+        if ( ( gstyles[nn] & AF_STYLE_MASK ) == AF_STYLE_UNASSIGNED )
+        {
+          gstyles[nn] &= ~AF_STYLE_MASK;
+          gstyles[nn] |= globals->module->fallback_style;
+        }
+      }
+    }
+
+    FT_Set_Charmap( face, old_charmap );
+    return error;
+  }
+
+
+  FT_LOCAL_DEF( FT_Error )
+  af_face_globals_new( FT_Face          face,
+                       AF_FaceGlobals  *aglobals,
+                       AF_Module        module )
+  {
+    FT_Error        error;
+    FT_Memory       memory;
+    AF_FaceGlobals  globals = NULL;
+
+
+    memory = face->memory;
+
+    /* we allocate an AF_FaceGlobals structure together */
+    /* with the glyph_styles array                      */
+    if ( FT_ALLOC( globals,
+                   sizeof ( *globals ) +
+                     (FT_ULong)face->num_glyphs * sizeof ( FT_UShort ) ) )
+      goto Exit;
+
+    globals->face                      = face;
+    globals->glyph_count               = face->num_glyphs;
+    /* right after the globals structure come the glyph styles */
+    globals->glyph_styles              = (FT_UShort*)( globals + 1 );
+    globals->module                    = module;
+    globals->stem_darkening_for_ppem   = 0;
+    globals->darken_x                  = 0;
+    globals->darken_y                  = 0;
+    globals->standard_vertical_width   = 0;
+    globals->standard_horizontal_width = 0;
+    globals->scale_down_factor         = 0;
+
+    error = af_face_globals_compute_style_coverage( globals );
+    if ( error )
+    {
+      af_face_globals_free( globals );
+      globals = NULL;
+    }
+    else
+      globals->increase_x_height = AF_PROP_INCREASE_X_HEIGHT_MAX;
+
+  Exit:
+    *aglobals = globals;
+    return error;
+  }
+
+
+  FT_LOCAL_DEF( void )
+  af_face_globals_free( AF_FaceGlobals  globals )
+  {
+    if ( globals )
+    {
+      FT_Memory  memory = globals->face->memory;
+      FT_UInt    nn;
+
+
+      for ( nn = 0; nn < AF_STYLE_MAX; nn++ )
+      {
+        if ( globals->metrics[nn] )
+        {
+          AF_StyleClass          style_class =
+            af_style_classes[nn];
+          AF_WritingSystemClass  writing_system_class =
+            af_writing_system_classes[style_class->writing_system];
+
+
+          if ( writing_system_class->style_metrics_done )
+            writing_system_class->style_metrics_done( globals->metrics[nn] );
+
+          FT_FREE( globals->metrics[nn] );
+        }
+      }
+
+      /* no need to free `globals->glyph_styles'; */
+      /* it is part of the `globals' array        */
+      FT_FREE( globals );
+    }
+  }
+
+
+  FT_LOCAL_DEF( FT_Error )
+  af_face_globals_get_metrics( AF_FaceGlobals    globals,
+                               FT_UInt           gindex,
+                               FT_UInt           options,
+                               AF_StyleMetrics  *ametrics )
+  {
+    AF_StyleMetrics  metrics = NULL;
+
+    AF_Style               style = (AF_Style)options;
+    AF_WritingSystemClass  writing_system_class;
+    AF_StyleClass          style_class;
+
+    FT_Error  error = FT_Err_Ok;
+
+
+    if ( gindex >= (FT_ULong)globals->glyph_count )
+    {
+      error = FT_THROW( Invalid_Argument );
+      goto Exit;
+    }
+
+    /* if we have a forced style (via `options'), use it, */
+    /* otherwise look into `glyph_styles' array           */
+    if ( style == AF_STYLE_NONE_DFLT || style + 1 >= AF_STYLE_MAX )
+      style = (AF_Style)( globals->glyph_styles[gindex] &
+                          AF_STYLE_UNASSIGNED           );
+
+    style_class          = af_style_classes[style];
+    writing_system_class = af_writing_system_classes
+                             [style_class->writing_system];
+
+    metrics = globals->metrics[style];
+    if ( !metrics )
+    {
+      /* create the global metrics object if necessary */
+      FT_Memory  memory = globals->face->memory;
+
+
+      if ( FT_ALLOC( metrics, writing_system_class->style_metrics_size ) )
+        goto Exit;
+
+      metrics->style_class = style_class;
+      metrics->globals     = globals;
+
+      if ( writing_system_class->style_metrics_init )
+      {
+        error = writing_system_class->style_metrics_init( metrics,
+                                                          globals->face );
+        if ( error )
+        {
+          if ( writing_system_class->style_metrics_done )
+            writing_system_class->style_metrics_done( metrics );
+
+          FT_FREE( metrics );
+          goto Exit;
+        }
+      }
+
+      globals->metrics[style] = metrics;
+    }
+
+  Exit:
+    *ametrics = metrics;
+
+    return error;
+  }
+
+
+  FT_LOCAL_DEF( FT_Bool )
+  af_face_globals_is_digit( AF_FaceGlobals  globals,
+                            FT_UInt         gindex )
+  {
+    if ( gindex < (FT_ULong)globals->glyph_count )
+      return (FT_Bool)( globals->glyph_styles[gindex] & AF_DIGIT );
+
+    return (FT_Bool)0;
+  }
+
+
+/* END */