Upgrade freetype to 2.4.6cm-7.1.0gingerbread-releasegingerbreadgb-release-7.2

CHANGES BETWEEN 2.4.5 and 2.4.6

  I. IMPORTANT BUG FIXES

    - For TrueType based fonts, the ascender and descender values were
      incorrect sometimes  (off by a pixel if the ppem value was not a
      multiple of 5).   Depending on the use you might now  experience
      a different  layout; the  change should  result in  better, more
      consistent line spacing.

    - Fix CVE-2011-0226  which causes a  vulnerability while  handling
      Type 1 fonts.

    - BDF fonts  containing  glyphs with negative values  for ENCODING
      were  incorrectly  rejected.  This  bug has  been introduced  in
      FreeType version 2.2.0.

    - David Bevan contributed a major revision of the FreeType stroker
      code:

      . The behaviour of FT_STROKER_LINEJOIN_BEVEL has been corrected.

      . A new  line join style,  FT_STROKER_LINEJOIN_MITER_FIXED,  has
        been introduced to support PostScript and PDF miter joins.

      . FT_STROKER_LINEJOIN_MITER_VARIABLE  has been introduced  as an
        alias for FT_STROKER_LINEJOIN_MITER.

      . Various stroking glitches has been fixed.

  II. MISCELLANEOUS

      - SFNT bitmap fonts which contain an outline glyph for `.notdef'
        only no longer set the FT_FACE_FLAG_SCALABLE flag.


CHANGES BETWEEN 2.4.4 and 2.4.5

  I. IMPORTANT BUG FIXES

    - A rendering regression  for second-order Bézier curves  has been
      fixed, introduced in 2.4.3.


  II. IMPORTANT CHANGES

    - If autohinting  is not  explicitly disabled,  FreeType now  uses
      the autohinter if  a TrueType based font doesn't  contain native
      hints.

    - The load flag FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH  has been made
      redundant and  is simply ignored;  this means that FreeType  now
      ignores the global advance width value in TrueType fonts.

  III. MISCELLANEOUS

    - `FT_Sfnt_Table_Info' can now return the number of SFNT tables of
      a font.

    - Support for PCF files compressed with bzip2 has been contributed
      by Joel  Klinghed.  To  make this  work, the  OS must  provide a
      bzip2 library.

    - Bradley  Grainger  contributed  project  and  solution  files in
      Visual Studio 2010 format.

    - Again some fixes to better handle broken fonts.

    - Some improvements to the B/W rasterizer.

    - Fixes to the cache module to improve robustness.

    - Just  Fill Bugs contributed (experimental) code to compute  blue
      zones for CJK Ideographs, improving the alignment of  horizontal
      stems at the top or bottom edges.

    - The `ftgrid' demo program  can now display  autohinter segments,
      to be toggled on and off with key `s'.


CHANGES BETWEEN 2.4.3 and 2.4.4

  I. IMPORTANT BUG FIXES

    - UVS support (TrueType/OpenType cmap format 14) support is fixed.
      This regression has been introduced in version 2.4.0.

  II. MISCELLANEOUS

    - Detect tricky fonts (e.g. MingLiU)  by the lengths and checksums
      of Type42-persistent subtables (`cvt ', `fpgm', and `prep') when
      a TrueType font without family name is given.  The previous fix,
      introduced in 2.4.3,  was too rigorous,  causing many  subsetted
      fonts (mainly  from PDF files) displayed badly  because FreeType
      forced  rendering with  the TrueType bytecode engine  instead of
      the autohinter.

    - Better support for 64bit platforms.

    - More fixes to improve handling of broken fonts.


CHANGES BETWEEN 2.4.2 and 2.4.3

  I. IMPORTANT BUG FIXES

    - Fix rendering of certain cubic, S-shaped arcs.   This regression
      has been introduced in version 2.4.0.

  II. MISCELLANEOUS

    - To  fix  the  above  mentioned  rendering  issue,  a  new spline
      flattening algorithm  has been  introduced which  speeds up both
      conic and cubic arcs.

    - Handling of broken fonts has been further improved.

Change-Id: Ie06b74b29738a34d686ab1132e9fa44d5d258d1c

1 files changed, 595 insertions, 219 deletions

diff --git a/src/base/ftstroke.c b/src/base/ftstroke.c
index 75bcbde..3f24f9e 100644
--- a/src/base/ftstroke.c
+++ b/src/base/ftstroke.c
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType path stroker (body).                                        */
 /*                                                                         */
-/*  Copyright 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010 by            */
+/*  Copyright 2002-2006, 2008-2011 by                                      */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -34,7 +34,7 @@
 
 
     return o == FT_ORIENTATION_TRUETYPE ? FT_STROKER_BORDER_RIGHT
-                                        : FT_STROKER_BORDER_LEFT ;
+                                        : FT_STROKER_BORDER_LEFT;
   }
 
 
@@ -47,20 +47,21 @@
 
 
     return o == FT_ORIENTATION_TRUETYPE ? FT_STROKER_BORDER_LEFT
-                                        : FT_STROKER_BORDER_RIGHT ;
+                                        : FT_STROKER_BORDER_RIGHT;
   }
 
 
- /***************************************************************************/
- /***************************************************************************/
- /*****                                                                 *****/
- /*****                       BEZIER COMPUTATIONS                       *****/
- /*****                                                                 *****/
- /***************************************************************************/
- /***************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*****                                                               *****/
+  /*****                      BEZIER COMPUTATIONS                      *****/
+  /*****                                                               *****/
+  /*************************************************************************/
+  /*************************************************************************/
 
 #define FT_SMALL_CONIC_THRESHOLD  ( FT_ANGLE_PI / 6 )
-#define FT_SMALL_CUBIC_THRESHOLD  ( FT_ANGLE_PI / 6 )
+#define FT_SMALL_CUBIC_THRESHOLD  ( FT_ANGLE_PI / 8 )
+
 #define FT_EPSILON  2
 
 #define FT_IS_SMALL( x )  ( (x) > -FT_EPSILON && (x) < FT_EPSILON )
@@ -69,7 +70,7 @@
   static FT_Pos
   ft_pos_abs( FT_Pos  x )
   {
-    return x >= 0 ? x : -x ;
+    return x >= 0 ? x : -x;
   }
 
 
@@ -114,18 +115,28 @@
     if ( close1 )
     {
       if ( close2 )
-        *angle_in = *angle_out = 0;
+      {
+        /* basically a point;                      */
+        /* do nothing to retain original direction */
+      }
       else
-        *angle_in = *angle_out = FT_Atan2( d2.x, d2.y );
-    }
-    else if ( close2 )
-    {
-      *angle_in = *angle_out = FT_Atan2( d1.x, d1.y );
+      {
+        *angle_in  =
+        *angle_out = FT_Atan2( d2.x, d2.y );
+      }
     }
-    else
+    else /* !close1 */
     {
-      *angle_in  = FT_Atan2( d1.x, d1.y );
-      *angle_out = FT_Atan2( d2.x, d2.y );
+      if ( close2 )
+      {
+        *angle_in  =
+        *angle_out = FT_Atan2( d1.x, d1.y );
+      }
+      else
+      {
+        *angle_in  = FT_Atan2( d1.x, d1.y );
+        *angle_out = FT_Atan2( d2.x, d2.y );
+      }
     }
 
     theta = ft_pos_abs( FT_Angle_Diff( *angle_in, *angle_out ) );
@@ -162,6 +173,17 @@
   }
 
 
+  /* Return the average of `angle1' and `angle2'.            */
+  /* This gives correct result even if `angle1' and `angle2' */
+  /* have opposite signs.                                    */
+  static FT_Angle
+  ft_angle_mean( FT_Angle  angle1,
+                 FT_Angle  angle2 )
+  {
+    return angle1 + FT_Angle_Diff( angle1, angle2 ) / 2;
+  }
+
+
   static FT_Bool
   ft_cubic_is_small_enough( FT_Vector*  base,
                             FT_Angle   *angle_in,
@@ -184,34 +206,70 @@
     close2 = FT_IS_SMALL( d2.x ) && FT_IS_SMALL( d2.y );
     close3 = FT_IS_SMALL( d3.x ) && FT_IS_SMALL( d3.y );
 
-    if ( close1 || close3 )
+    if ( close1 )
     {
       if ( close2 )
       {
-        /* basically a point */
-        *angle_in = *angle_out = *angle_mid = 0;
-      }
-      else if ( close1 )
-      {
-        *angle_in  = *angle_mid = FT_Atan2( d2.x, d2.y );
-        *angle_out = FT_Atan2( d3.x, d3.y );
+        if ( close3 )
+        {
+          /* basically a point;                      */
+          /* do nothing to retain original direction */
+        }
+        else /* !close3 */
+        {
+          *angle_in  =
+          *angle_mid =
+          *angle_out = FT_Atan2( d3.x, d3.y );
+        }
       }
-      else  /* close2 */
+      else /* !close2 */
       {
-        *angle_in  = FT_Atan2( d1.x, d1.y );
-        *angle_mid = *angle_out = FT_Atan2( d2.x, d2.y );
+        if ( close3 )
+        {
+          *angle_in  =
+          *angle_mid =
+          *angle_out = FT_Atan2( d2.x, d2.y );
+        }
+        else /* !close3 */
+        {
+          *angle_in  =
+          *angle_mid = FT_Atan2( d2.x, d2.y );
+          *angle_out = FT_Atan2( d3.x, d3.y );
+        }
       }
     }
-    else if ( close2 )
-    {
-      *angle_in  = *angle_mid = FT_Atan2( d1.x, d1.y );
-      *angle_out = FT_Atan2( d3.x, d3.y );
-    }
-    else
+    else /* !close1 */
     {
-      *angle_in  = FT_Atan2( d1.x, d1.y );
-      *angle_mid = FT_Atan2( d2.x, d2.y );
-      *angle_out = FT_Atan2( d3.x, d3.y );
+      if ( close2 )
+      {
+        if ( close3 )
+        {
+          *angle_in  =
+          *angle_mid =
+          *angle_out = FT_Atan2( d1.x, d1.y );
+        }
+        else /* !close3 */
+        {
+          *angle_in  = FT_Atan2( d1.x, d1.y );
+          *angle_out = FT_Atan2( d3.x, d3.y );
+          *angle_mid = ft_angle_mean( *angle_in, *angle_out );
+        }
+      }
+      else /* !close2 */
+      {
+        if ( close3 )
+        {
+          *angle_in  = FT_Atan2( d1.x, d1.y );
+          *angle_mid =
+          *angle_out = FT_Atan2( d2.x, d2.y );
+        }
+        else /* !close3 */
+        {
+          *angle_in  = FT_Atan2( d1.x, d1.y );
+          *angle_mid = FT_Atan2( d2.x, d2.y );
+          *angle_out = FT_Atan2( d3.x, d3.y );
+        }
+      }
     }
 
     theta1 = ft_pos_abs( FT_Angle_Diff( *angle_in,  *angle_mid ) );
@@ -222,13 +280,13 @@
   }
 
 
- /***************************************************************************/
- /***************************************************************************/
- /*****                                                                 *****/
- /*****                       STROKE BORDERS                            *****/
- /*****                                                                 *****/
- /***************************************************************************/
- /***************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*****                                                               *****/
+  /*****                       STROKE BORDERS                          *****/
+  /*****                                                               *****/
+  /*************************************************************************/
+  /*************************************************************************/
 
   typedef enum  FT_StrokeTags_
   {
@@ -239,7 +297,7 @@
 
   } FT_StrokeTags;
 
-#define  FT_STROKE_TAG_BEGIN_END  (FT_STROKE_TAG_BEGIN|FT_STROKE_TAG_END)
+#define  FT_STROKE_TAG_BEGIN_END  ( FT_STROKE_TAG_BEGIN | FT_STROKE_TAG_END )
 
   typedef struct  FT_StrokeBorderRec_
   {
@@ -247,7 +305,7 @@
     FT_UInt     max_points;
     FT_Vector*  points;
     FT_Byte*    tags;
-    FT_Bool     movable;
+    FT_Bool     movable;  /* TRUE for ends of lineto borders */
     FT_Int      start;    /* index of current sub-path start point */
     FT_Memory   memory;
     FT_Bool     valid;
@@ -368,6 +426,12 @@
     }
     else
     {
+      /* don't add zero-length lineto */
+      if ( border->num_points > 0                                          &&
+           FT_IS_SMALL( border->points[border->num_points - 1].x - to->x ) &&
+           FT_IS_SMALL( border->points[border->num_points - 1].y - to->y ) )
+        return error;
+
       /* add one point */
       error = ft_stroke_border_grow( border, 1 );
       if ( !error )
@@ -403,6 +467,7 @@
       FT_Vector*  vec = border->points + border->num_points;
       FT_Byte*    tag = border->tags   + border->num_points;
 
+
       vec[0] = *control;
       vec[1] = *to;
 
@@ -411,7 +476,9 @@
 
       border->num_points += 2;
     }
+
     border->movable = FALSE;
+
     return error;
   }
 
@@ -444,7 +511,9 @@
 
       border->num_points += 3;
     }
+
     border->movable = FALSE;
+
     return error;
   }
 
@@ -530,7 +599,7 @@
     if ( border->start >= 0 )
       ft_stroke_border_close( border, FALSE );
 
-    border->start   = border->num_points;
+    border->start = border->num_points;
     border->movable = FALSE;
 
     return ft_stroke_border_lineto( border, to, FALSE );
@@ -673,38 +742,41 @@
       }
     }
 
-    outline->n_points  = (short)( outline->n_points + border->num_points );
+    outline->n_points = (short)( outline->n_points + border->num_points );
 
     FT_ASSERT( FT_Outline_Check( outline ) == 0 );
   }
 
 
- /***************************************************************************/
- /***************************************************************************/
- /*****                                                                 *****/
- /*****                           STROKER                               *****/
- /*****                                                                 *****/
- /***************************************************************************/
- /***************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*****                                                               *****/
+  /*****                           STROKER                             *****/
+  /*****                                                               *****/
+  /*************************************************************************/
+  /*************************************************************************/
 
 #define FT_SIDE_TO_ROTATE( s )   ( FT_ANGLE_PI2 - (s) * FT_ANGLE_PI )
 
   typedef struct  FT_StrokerRec_
   {
-    FT_Angle             angle_in;
-    FT_Angle             angle_out;
-    FT_Vector            center;
-    FT_Bool              first_point;
-    FT_Bool              subpath_open;
-    FT_Angle             subpath_angle;
-    FT_Vector            subpath_start;
+    FT_Angle             angle_in;             /* direction into curr join */
+    FT_Angle             angle_out;            /* direction out of join  */
+    FT_Vector            center;               /* current position */
+    FT_Fixed             line_length;          /* length of last lineto */
+    FT_Bool              first_point;          /* is this the start? */
+    FT_Bool              subpath_open;         /* is the subpath open? */
+    FT_Angle             subpath_angle;        /* subpath start direction */
+    FT_Vector            subpath_start;        /* subpath start position */
+    FT_Fixed             subpath_line_length;  /* subpath start lineto len */
+    FT_Bool              handle_wide_strokes;  /* use wide strokes logic? */
 
     FT_Stroker_LineCap   line_cap;
     FT_Stroker_LineJoin  line_join;
+    FT_Stroker_LineJoin  line_join_saved;
     FT_Fixed             miter_limit;
     FT_Fixed             radius;
 
-    FT_Bool              valid;
     FT_StrokeBorderRec   borders[2];
     FT_Library           library;
 
@@ -719,7 +791,7 @@
   {
     FT_Error    error;
     FT_Memory   memory;
-    FT_Stroker  stroker;
+    FT_Stroker  stroker = NULL;
 
 
     if ( !library )
@@ -734,7 +806,9 @@
       ft_stroke_border_init( &stroker->borders[0], memory );
       ft_stroke_border_init( &stroker->borders[1], memory );
     }
+
     *astroker = stroker;
+
     return error;
   }
 
@@ -753,6 +827,14 @@
     stroker->line_join   = line_join;
     stroker->miter_limit = miter_limit;
 
+    /* ensure miter limit has sensible value */
+    if ( stroker->miter_limit < 0x10000 )
+      stroker->miter_limit = 0x10000;
+
+    /* save line join style:                                           */
+    /* line join style can be temporarily changed when stroking curves */
+    stroker->line_join_saved = line_join;
+
     FT_Stroker_Rewind( stroker );
   }
 
@@ -789,7 +871,7 @@
   }
 
 
-  /* creates a circular arc at a corner or cap */
+  /* create a circular arc at a corner or cap */
   static FT_Error
   ft_stroker_arcto( FT_Stroker  stroker,
                     FT_Int      side )
@@ -816,7 +898,7 @@
   }
 
 
-  /* adds a cap at the end of an opened path */
+  /* add a cap at the end of an opened path */
   static FT_Error
   ft_stroker_cap( FT_Stroker  stroker,
                   FT_Angle    angle,
@@ -830,6 +912,7 @@
       /* add a round cap */
       stroker->angle_in  = angle;
       stroker->angle_out = angle + FT_ANGLE_PI;
+
       error = ft_stroker_arcto( stroker, side );
     }
     else if ( stroker->line_cap == FT_STROKER_LINECAP_SQUARE )
@@ -882,7 +965,7 @@
       delta.x += stroker->center.x;
       delta.y += stroker->center.y;
 
-      error = ft_stroke_border_lineto( border, &delta, FALSE );   
+      error = ft_stroke_border_lineto( border, &delta, FALSE );
     }
 
   Exit:
@@ -893,40 +976,52 @@
   /* process an inside corner, i.e. compute intersection */
   static FT_Error
   ft_stroker_inside( FT_Stroker  stroker,
-                     FT_Int      side)
+                     FT_Int      side,
+                     FT_Fixed    line_length )
   {
     FT_StrokeBorder  border = stroker->borders + side;
     FT_Angle         phi, theta, rotate;
-    FT_Fixed         length, thcos, sigma;
+    FT_Fixed         length, thcos;
     FT_Vector        delta;
     FT_Error         error = FT_Err_Ok;
+    FT_Bool          intersect;          /* use intersection of lines? */
 
 
     rotate = FT_SIDE_TO_ROTATE( side );
 
-    /* compute median angle */
-    theta = FT_Angle_Diff( stroker->angle_in, stroker->angle_out );
-    if ( theta == FT_ANGLE_PI )
-      theta = rotate;
+    theta = FT_Angle_Diff( stroker->angle_in, stroker->angle_out ) / 2;
+
+    /* Only intersect borders if between two lineto's and both */
+    /* lines are long enough (line_length is zero for curves). */
+    if ( !border->movable || line_length == 0 )
+      intersect = FALSE;
     else
-      theta = theta / 2;
+    {
+      /* compute minimum required length of lines */
+      FT_Fixed  min_length = ft_pos_abs( FT_MulFix( stroker->radius,
+                                                    FT_Tan( theta ) ) );
 
-    phi = stroker->angle_in + theta;
 
-    thcos = FT_Cos( theta );
-    sigma = FT_MulFix( stroker->miter_limit, thcos );
+      intersect = FT_BOOL( stroker->line_length >= min_length &&
+                           line_length          >= min_length );
+    }
 
-    /* TODO: find better criterion to switch off the optimization */
-    if ( sigma < 0x10000L )
+    if ( !intersect )
     {
       FT_Vector_From_Polar( &delta, stroker->radius,
                             stroker->angle_out + rotate );
       delta.x += stroker->center.x;
       delta.y += stroker->center.y;
+
       border->movable = FALSE;
     }
     else
     {
+      /* compute median angle */
+      phi = stroker->angle_in + theta;
+
+      thcos = FT_Cos( theta );
+
       length = FT_DivFix( stroker->radius, thcos );
 
       FT_Vector_From_Polar( &delta, length, phi + rotate );
@@ -943,7 +1038,8 @@
   /* process an outside corner, i.e. compute bevel/miter/round */
   static FT_Error
   ft_stroker_outside( FT_Stroker  stroker,
-                      FT_Int      side )
+                      FT_Int      side,
+                      FT_Fixed    line_length )
   {
     FT_StrokeBorder  border = stroker->borders + side;
     FT_Error         error;
@@ -954,79 +1050,119 @@
       error = ft_stroker_arcto( stroker, side );
     else
     {
-      /* this is a mitered or beveled corner */
-      FT_Fixed  sigma, radius = stroker->radius;
-      FT_Angle  theta, phi;
-      FT_Fixed  thcos;
-      FT_Bool   miter;
+      /* this is a mitered (pointed) or beveled (truncated) corner */
+      FT_Fixed  sigma = 0, radius = stroker->radius;
+      FT_Angle  theta = 0, phi = 0;
+      FT_Fixed  thcos = 0;
+      FT_Bool   bevel, fixed_bevel;
 
 
       rotate = FT_SIDE_TO_ROTATE( side );
-      miter  = FT_BOOL( stroker->line_join == FT_STROKER_LINEJOIN_MITER );
 
-      theta = FT_Angle_Diff( stroker->angle_in, stroker->angle_out );
-      if ( theta == FT_ANGLE_PI )
+      bevel =
+        FT_BOOL( stroker->line_join == FT_STROKER_LINEJOIN_BEVEL );
+
+      fixed_bevel =
+        FT_BOOL( stroker->line_join != FT_STROKER_LINEJOIN_MITER_VARIABLE );
+
+      if ( !bevel )
       {
-        theta = rotate;
-        phi   = stroker->angle_in;
+        theta = FT_Angle_Diff( stroker->angle_in, stroker->angle_out );
+
+        if ( theta == FT_ANGLE_PI )
+        {
+          theta = rotate;
+          phi   = stroker->angle_in;
+        }
+        else
+        {
+          theta /= 2;
+          phi    = stroker->angle_in + theta + rotate;
+        }
+
+        thcos = FT_Cos( theta );
+        sigma = FT_MulFix( stroker->miter_limit, thcos );
+
+        /* is miter limit exceeded? */
+        if ( sigma < 0x10000L )
+        {
+          /* don't create variable bevels for very small deviations; */
+          /* FT_Sin(x) = 0 for x <= 57                               */
+          if ( fixed_bevel || ft_pos_abs( theta ) > 57 )
+            bevel = TRUE;
+        }
       }
-      else
+
+      if ( bevel )  /* this is a bevel (broken angle) */
       {
-        theta = theta / 2;
-        phi   = stroker->angle_in + theta + rotate;
-      }
+        if ( fixed_bevel )
+        {
+          /* the outer corners are simply joined together */
+          FT_Vector  delta;
 
-      thcos = FT_Cos( theta );
-      sigma = FT_MulFix( stroker->miter_limit, thcos );
 
-      /* FT_Sin(x) = 0 for x <= 57 */
-      if ( sigma >= 0x10000L || ft_pos_abs( theta ) <= 57 )
-        miter = FALSE;
+          /* add bevel */
+          FT_Vector_From_Polar( &delta,
+                                radius,
+                                stroker->angle_out + rotate );
+          delta.x += stroker->center.x;
+          delta.y += stroker->center.y;
 
-      if ( miter )  /* this is a miter (broken angle) */
-      {
-        FT_Vector  middle, delta;
-        FT_Fixed   length;
+          border->movable = FALSE;
+          error = ft_stroke_border_lineto( border, &delta, FALSE );
+        }
+        else /* variable bevel */
+        {
+          /* the miter is truncated */
+          FT_Vector  middle, delta;
+          FT_Fixed   length;
 
 
-        /* compute middle point */
-        FT_Vector_From_Polar( &middle,
-                              FT_MulFix( radius, stroker->miter_limit ),
-                              phi );
-        middle.x += stroker->center.x;
-        middle.y += stroker->center.y;
+          /* compute middle point */
+          FT_Vector_From_Polar( &middle,
+                                FT_MulFix( radius, stroker->miter_limit ),
+                                phi );
+          middle.x += stroker->center.x;
+          middle.y += stroker->center.y;
 
-        /* compute first angle point */
-        length = FT_MulFix( radius,
-                            FT_DivFix( 0x10000L - sigma,
-                                       ft_pos_abs( FT_Sin( theta ) ) ) );
+          /* compute first angle point */
+          length = FT_MulFix( radius,
+                              FT_DivFix( 0x10000L - sigma,
+                                         ft_pos_abs( FT_Sin( theta ) ) ) );
 
-        FT_Vector_From_Polar( &delta, length, phi + rotate );
-        delta.x += middle.x;
-        delta.y += middle.y;
+          FT_Vector_From_Polar( &delta, length, phi + rotate );
+          delta.x += middle.x;
+          delta.y += middle.y;
 
-        error = ft_stroke_border_lineto( border, &delta, FALSE );
-        if ( error )
-          goto Exit;
+          error = ft_stroke_border_lineto( border, &delta, FALSE );
+          if ( error )
+            goto Exit;
 
-        /* compute second angle point */
-        FT_Vector_From_Polar( &delta, length, phi - rotate );
-        delta.x += middle.x;
-        delta.y += middle.y;
+          /* compute second angle point */
+          FT_Vector_From_Polar( &delta, length, phi - rotate );
+          delta.x += middle.x;
+          delta.y += middle.y;
 
-        error = ft_stroke_border_lineto( border, &delta, FALSE );
-        if ( error )
-          goto Exit;
+          error = ft_stroke_border_lineto( border, &delta, FALSE );
+          if ( error )
+            goto Exit;
 
-        /* finally, add a movable end point */
-        FT_Vector_From_Polar( &delta, radius, stroker->angle_out + rotate );
-        delta.x += stroker->center.x;
-        delta.y += stroker->center.y;
+          /* finally, add an end point; only needed if not lineto */
+          /* (line_length is zero for curves)                     */
+          if ( line_length == 0 )
+          {
+            FT_Vector_From_Polar( &delta,
+                                  radius,
+                                  stroker->angle_out + rotate );
 
-        error = ft_stroke_border_lineto( border, &delta, TRUE );
-      }
+            delta.x += stroker->center.x;
+            delta.y += stroker->center.y;
 
-      else /* this is a bevel (intersection) */
+            error = ft_stroke_border_lineto( border, &delta, FALSE );
+          }
+        }
+      }
+      else /* this is a miter (intersection) */
       {
         FT_Fixed   length;
         FT_Vector  delta;
@@ -1042,13 +1178,18 @@
         if ( error )
           goto Exit;
 
-        /* now add end point */
-        FT_Vector_From_Polar( &delta, stroker->radius,
-                              stroker->angle_out + rotate );
-        delta.x += stroker->center.x;
-        delta.y += stroker->center.y;
+        /* now add an end point; only needed if not lineto */
+        /* (line_length is zero for curves)                */
+        if ( line_length == 0 )
+        {
+          FT_Vector_From_Polar( &delta,
+                                stroker->radius,
+                                stroker->angle_out + rotate );
+          delta.x += stroker->center.x;
+          delta.y += stroker->center.y;
 
-        error = ft_stroke_border_lineto( border, &delta, TRUE );
+          error = ft_stroke_border_lineto( border, &delta, FALSE );
+        }
       }
     }
 
@@ -1058,7 +1199,8 @@
 
 
   static FT_Error
-  ft_stroker_process_corner( FT_Stroker  stroker )
+  ft_stroker_process_corner( FT_Stroker  stroker,
+                             FT_Fixed    line_length )
   {
     FT_Error  error = FT_Err_Ok;
     FT_Angle  turn;
@@ -1079,12 +1221,12 @@
       inside_side = 1;
 
     /* process the inside side */
-    error = ft_stroker_inside( stroker, inside_side );
+    error = ft_stroker_inside( stroker, inside_side, line_length );
     if ( error )
       goto Exit;
 
     /* process the outside side */
-    error = ft_stroker_outside( stroker, 1 - inside_side );
+    error = ft_stroker_outside( stroker, 1 - inside_side, line_length );
 
   Exit:
     return error;
@@ -1095,7 +1237,8 @@
   /* start of the subpath                                              */
   static FT_Error
   ft_stroker_subpath_start( FT_Stroker  stroker,
-                            FT_Angle    start_angle )
+                            FT_Angle    start_angle,
+                            FT_Fixed    line_length )
   {
     FT_Vector        delta;
     FT_Vector        point;
@@ -1120,9 +1263,11 @@
     border++;
     error = ft_stroke_border_moveto( border, &point );
 
-    /* save angle for last cap */
-    stroker->subpath_angle = start_angle;
-    stroker->first_point   = FALSE;
+    /* save angle, position, and line length for last join */
+    /* (line_length is zero for curves)                    */
+    stroker->subpath_angle       = start_angle;
+    stroker->first_point         = FALSE;
+    stroker->subpath_line_length = line_length;
 
   Exit:
     return error;
@@ -1140,10 +1285,19 @@
     FT_Vector        delta;
     FT_Angle         angle;
     FT_Int           side;
+    FT_Fixed         line_length;
+
 
     delta.x = to->x - stroker->center.x;
     delta.y = to->y - stroker->center.y;
 
+    /* a zero-length lineto is a no-op; avoid creating a spurious corner */
+    if ( delta.x == 0 && delta.y == 0 )
+       goto Exit;
+
+    /* compute length of line */
+    line_length = FT_Vector_Length( &delta );
+
     angle = FT_Atan2( delta.x, delta.y );
     FT_Vector_From_Polar( &delta, stroker->radius, angle + FT_ANGLE_PI2 );
 
@@ -1153,7 +1307,7 @@
       /* This is the first segment of a subpath.  We need to     */
       /* add a point to each border at their respective starting */
       /* point locations.                                        */
-      error = ft_stroker_subpath_start( stroker, angle );
+      error = ft_stroker_subpath_start( stroker, angle, line_length );
       if ( error )
         goto Exit;
     }
@@ -1161,13 +1315,12 @@
     {
       /* process the current corner */
       stroker->angle_out = angle;
-      error = ft_stroker_process_corner( stroker );
+      error = ft_stroker_process_corner( stroker, line_length );
       if ( error )
         goto Exit;
     }
 
     /* now add a line segment to both the `inside' and `outside' paths */
-
     for ( border = stroker->borders, side = 1; side >= 0; side--, border++ )
     {
       FT_Vector  point;
@@ -1176,6 +1329,7 @@
       point.x = to->x + delta.x;
       point.y = to->y + delta.y;
 
+      /* the ends of lineto borders are movable */
       error = ft_stroke_border_lineto( border, &point, TRUE );
       if ( error )
         goto Exit;
@@ -1184,8 +1338,9 @@
       delta.y = -delta.y;
     }
 
-    stroker->angle_in = angle;
-    stroker->center   = *to;
+    stroker->angle_in    = angle;
+    stroker->center      = *to;
+    stroker->line_length = line_length;
 
   Exit:
     return error;
@@ -1203,10 +1358,20 @@
     FT_Vector   bez_stack[34];
     FT_Vector*  arc;
     FT_Vector*  limit = bez_stack + 30;
-    FT_Angle    start_angle;
     FT_Bool     first_arc = TRUE;
 
 
+    /* if all control points are coincident, this is a no-op; */
+    /* avoid creating a spurious corner                       */
+    if ( FT_IS_SMALL( stroker->center.x - control->x ) &&
+         FT_IS_SMALL( stroker->center.y - control->y ) &&
+         FT_IS_SMALL( control->x        - to->x      ) &&
+         FT_IS_SMALL( control->y        - to->y      ) )
+    {
+       stroker->center = *to;
+       goto Exit;
+    }
+
     arc    = bez_stack;
     arc[0] = *to;
     arc[1] = *control;
@@ -1217,11 +1382,15 @@
       FT_Angle  angle_in, angle_out;
 
 
-      angle_in = angle_out = 0;  /* remove compiler warnings */
+      /* initialize with current direction */
+      angle_in = angle_out = stroker->angle_in;
 
       if ( arc < limit                                             &&
            !ft_conic_is_small_enough( arc, &angle_in, &angle_out ) )
       {
+        if ( stroker->first_point )
+          stroker->angle_in = angle_in;
+
         ft_conic_split( arc );
         arc += 2;
         continue;
@@ -1231,32 +1400,54 @@
       {
         first_arc = FALSE;
 
-        start_angle = angle_in;
-
         /* process corner if necessary */
         if ( stroker->first_point )
-          error = ft_stroker_subpath_start( stroker, start_angle );
+          error = ft_stroker_subpath_start( stroker, angle_in, 0 );
         else
         {
-          stroker->angle_out = start_angle;
-          error = ft_stroker_process_corner( stroker );
+          stroker->angle_out = angle_in;
+          error = ft_stroker_process_corner( stroker, 0 );
         }
       }
+      else if ( ft_pos_abs( FT_Angle_Diff( stroker->angle_in, angle_in ) ) >
+                  FT_SMALL_CONIC_THRESHOLD / 4                             )
+      {
+        /* if the deviation from one arc to the next is too great, */
+        /* add a round corner                                      */
+        stroker->center    = arc[2];
+        stroker->angle_out = angle_in;
+        stroker->line_join = FT_STROKER_LINEJOIN_ROUND;
+
+        error = ft_stroker_process_corner( stroker, 0 );
+
+        /* reinstate line join style */
+        stroker->line_join = stroker->line_join_saved;
+      }
+
+      if ( error )
+        goto Exit;
 
       /* the arc's angle is small enough; we can add it directly to each */
       /* border                                                          */
       {
-        FT_Vector  ctrl, end;
-        FT_Angle   theta, phi, rotate;
-        FT_Fixed   length;
-        FT_Int     side;
+        FT_Vector        ctrl, end;
+        FT_Angle         theta, phi, rotate, alpha0 = 0;
+        FT_Fixed         length;
+        FT_StrokeBorder  border;
+        FT_Int           side;
 
 
         theta  = FT_Angle_Diff( angle_in, angle_out ) / 2;
         phi    = angle_in + theta;
         length = FT_DivFix( stroker->radius, FT_Cos( theta ) );
 
-        for ( side = 0; side <= 1; side++ )
+        /* compute direction of original arc */
+        if ( stroker->handle_wide_strokes )
+          alpha0 = FT_Atan2( arc[0].x - arc[2].x, arc[0].y - arc[2].y );
+
+        for ( border = stroker->borders, side = 0;
+              side <= 1;
+              side++, border++ )
         {
           rotate = FT_SIDE_TO_ROTATE( side );
 
@@ -1270,8 +1461,70 @@
           end.x += arc[0].x;
           end.y += arc[0].y;
 
-          error = ft_stroke_border_conicto( stroker->borders + side,
-                                            &ctrl, &end );
+          if ( stroker->handle_wide_strokes )
+          {
+            FT_Vector  start;
+            FT_Angle   alpha1;
+
+
+            /* determine whether the border radius is greater than the */
+            /* radius of curvature of the original arc                 */
+            start = border->points[border->num_points - 1];
+
+            alpha1 = FT_Atan2( end.x - start.x, end.y - start.y );
+
+            /* is the direction of the border arc opposite to */
+            /* that of the original arc? */
+            if ( ft_pos_abs( FT_Angle_Diff( alpha0, alpha1 ) ) >
+                   FT_ANGLE_PI / 2                             )
+            {
+              FT_Angle   beta, gamma;
+              FT_Vector  bvec, delta;
+              FT_Fixed   blen, sinA, sinB, alen;
+
+
+              /* use the sine rule to find the intersection point */
+              beta  = FT_Atan2( arc[2].x - start.x, arc[2].y - start.y );
+              gamma = FT_Atan2( arc[0].x - end.x,   arc[0].y - end.y );
+
+              bvec.x = end.x - start.x;
+              bvec.y = end.y - start.y;
+
+              blen = FT_Vector_Length( &bvec );
+
+              sinA = ft_pos_abs( FT_Sin( alpha1 - gamma ) );
+              sinB = ft_pos_abs( FT_Sin( beta - gamma ) );
+
+              alen = FT_DivFix( FT_MulFix( blen, sinA ), sinB );
+
+              FT_Vector_From_Polar( &delta, alen, beta );
+              delta.x += start.x;
+              delta.y += start.y;
+
+              /* circumnavigate the negative sector backwards */
+              border->movable = FALSE;
+              error = ft_stroke_border_lineto( border, &delta, FALSE );
+              if ( error )
+                goto Exit;
+              error = ft_stroke_border_lineto( border, &end, FALSE );
+              if ( error )
+                goto Exit;
+              error = ft_stroke_border_conicto( border, &ctrl, &start );
+              if ( error )
+                goto Exit;
+              /* and then move to the endpoint */
+              error = ft_stroke_border_lineto( border, &end, FALSE );
+              if ( error )
+                goto Exit;
+
+              continue;
+            }
+
+            /* else fall through */
+          }
+
+          /* simply add an arc */
+          error = ft_stroke_border_conicto( border, &ctrl, &end );
           if ( error )
             goto Exit;
         }
@@ -1279,8 +1532,7 @@
 
       arc -= 2;
 
-      if ( arc < bez_stack )
-        stroker->angle_in = angle_out;
+      stroker->angle_in = angle_out;
     }
 
     stroker->center = *to;
@@ -1302,10 +1554,22 @@
     FT_Vector   bez_stack[37];
     FT_Vector*  arc;
     FT_Vector*  limit = bez_stack + 32;
-    FT_Angle    start_angle;
     FT_Bool     first_arc = TRUE;
 
 
+    /* if all control points are coincident, this is a no-op; */
+    /* avoid creating a spurious corner */
+    if ( FT_IS_SMALL( stroker->center.x - control1->x ) &&
+         FT_IS_SMALL( stroker->center.y - control1->y ) &&
+         FT_IS_SMALL( control1->x       - control2->x ) &&
+         FT_IS_SMALL( control1->y       - control2->y ) &&
+         FT_IS_SMALL( control2->x       - to->x       ) &&
+         FT_IS_SMALL( control2->y       - to->y       ) )
+    {
+       stroker->center = *to;
+       goto Exit;
+    }
+
     arc    = bez_stack;
     arc[0] = *to;
     arc[1] = *control2;
@@ -1317,13 +1581,16 @@
       FT_Angle  angle_in, angle_mid, angle_out;
 
 
-      /* remove compiler warnings */
-      angle_in = angle_out = angle_mid = 0;
+      /* initialize with current direction */
+      angle_in = angle_out = angle_mid = stroker->angle_in;
 
       if ( arc < limit                                         &&
            !ft_cubic_is_small_enough( arc, &angle_in,
                                       &angle_mid, &angle_out ) )
       {
+        if ( stroker->first_point )
+          stroker->angle_in = angle_in;
+
         ft_cubic_split( arc );
         arc += 3;
         continue;
@@ -1334,36 +1601,56 @@
         first_arc = FALSE;
 
         /* process corner if necessary */
-        start_angle = angle_in;
-
         if ( stroker->first_point )
-          error = ft_stroker_subpath_start( stroker, start_angle );
+          error = ft_stroker_subpath_start( stroker, angle_in, 0 );
         else
         {
-          stroker->angle_out = start_angle;
-          error = ft_stroker_process_corner( stroker );
+          stroker->angle_out = angle_in;
+          error = ft_stroker_process_corner( stroker, 0 );
         }
-        if ( error )
-          goto Exit;
+      }
+      else if ( ft_pos_abs( FT_Angle_Diff( stroker->angle_in, angle_in ) ) >
+                  FT_SMALL_CUBIC_THRESHOLD / 4                             )
+      {
+        /* if the deviation from one arc to the next is too great, */
+        /* add a round corner                                      */
+        stroker->center    = arc[3];
+        stroker->angle_out = angle_in;
+        stroker->line_join = FT_STROKER_LINEJOIN_ROUND;
+
+        error = ft_stroker_process_corner( stroker, 0 );
+
+        /* reinstate line join style */
+        stroker->line_join = stroker->line_join_saved;
       }
 
+      if ( error )
+        goto Exit;
+
       /* the arc's angle is small enough; we can add it directly to each */
       /* border                                                          */
       {
-        FT_Vector  ctrl1, ctrl2, end;
-        FT_Angle   theta1, phi1, theta2, phi2, rotate;
-        FT_Fixed   length1, length2;
-        FT_Int     side;
+        FT_Vector        ctrl1, ctrl2, end;
+        FT_Angle         theta1, phi1, theta2, phi2, rotate, alpha0 = 0;
+        FT_Fixed         length1, length2;
+        FT_StrokeBorder  border;
+        FT_Int           side;
 
 
-        theta1  = ft_pos_abs( angle_mid - angle_in ) / 2;
-        theta2  = ft_pos_abs( angle_out - angle_mid ) / 2;
-        phi1    = (angle_mid + angle_in ) / 2;
-        phi2    = (angle_mid + angle_out ) / 2;
+        theta1  = FT_Angle_Diff( angle_in,  angle_mid ) / 2;
+        theta2  = FT_Angle_Diff( angle_mid, angle_out ) / 2;
+        phi1    = ft_angle_mean( angle_in,  angle_mid );
+        phi2    = ft_angle_mean( angle_mid, angle_out );
         length1 = FT_DivFix( stroker->radius, FT_Cos( theta1 ) );
         length2 = FT_DivFix( stroker->radius, FT_Cos( theta2 ) );
 
-        for ( side = 0; side <= 1; side++ )
+        /* compute direction of original arc */
+        if ( stroker->handle_wide_strokes )
+          alpha0 = FT_Atan2( arc[0].x - arc[3].x, arc[0].y - arc[3].y );
+
+        for ( border = stroker->borders, side = 0;
+              side <= 1;
+              side++, border++ )
         {
           rotate = FT_SIDE_TO_ROTATE( side );
 
@@ -1381,16 +1668,81 @@
           end.x += arc[0].x;
           end.y += arc[0].y;
 
-          error = ft_stroke_border_cubicto( stroker->borders + side,
-                                            &ctrl1, &ctrl2, &end );
+          if ( stroker->handle_wide_strokes )
+          {
+            FT_Vector  start;
+            FT_Angle   alpha1;
+
+
+            /* determine whether the border radius is greater than the */
+            /* radius of curvature of the original arc                 */
+            start = border->points[border->num_points - 1];
+
+            alpha1 = FT_Atan2( end.x - start.x, end.y - start.y );
+
+            /* is the direction of the border arc opposite to */
+            /* that of the original arc? */
+            if ( ft_pos_abs( FT_Angle_Diff( alpha0, alpha1 ) ) >
+                   FT_ANGLE_PI / 2                             )
+            {
+              FT_Angle   beta, gamma;
+              FT_Vector  bvec, delta;
+              FT_Fixed   blen, sinA, sinB, alen;
+
+
+              /* use the sine rule to find the intersection point */
+              beta  = FT_Atan2( arc[3].x - start.x, arc[3].y - start.y );
+              gamma = FT_Atan2( arc[0].x - end.x,   arc[0].y - end.y );
+
+              bvec.x = end.x - start.x;
+              bvec.y = end.y - start.y;
+
+              blen = FT_Vector_Length( &bvec );
+
+              sinA = ft_pos_abs( FT_Sin( alpha1 - gamma ) );
+              sinB = ft_pos_abs( FT_Sin( beta - gamma ) );
+
+              alen = FT_DivFix( FT_MulFix( blen, sinA ), sinB );
+
+              FT_Vector_From_Polar( &delta, alen, beta );
+              delta.x += start.x;
+              delta.y += start.y;
+
+              /* circumnavigate the negative sector backwards */
+              border->movable = FALSE;
+              error = ft_stroke_border_lineto( border, &delta, FALSE );
+              if ( error )
+                goto Exit;
+              error = ft_stroke_border_lineto( border, &end, FALSE );
+              if ( error )
+                goto Exit;
+              error = ft_stroke_border_cubicto( border,
+                                                &ctrl2,
+                                                &ctrl1,
+                                                &start );
+              if ( error )
+                goto Exit;
+              /* and then move to the endpoint */
+              error = ft_stroke_border_lineto( border, &end, FALSE );
+              if ( error )
+                goto Exit;
+
+              continue;
+            }
+
+            /* else fall through */
+          }
+
+          /* simply add an arc */
+          error = ft_stroke_border_cubicto( border, &ctrl1, &ctrl2, &end );
           if ( error )
             goto Exit;
         }
       }
 
       arc -= 3;
-      if ( arc < bez_stack )
-        stroker->angle_in = angle_out;
+
+      stroker->angle_in = angle_out;
     }
 
     stroker->center = *to;
@@ -1415,9 +1767,21 @@
     stroker->center       = *to;
     stroker->subpath_open = open;
 
+    /* Determine if we need to check whether the border radius is greater */
+    /* than the radius of curvature of a curve, to handle this case       */
+    /* specially.  This is only required if bevel joins or butt caps may  */
+    /* be created, because round & miter joins and round & square caps    */
+    /* cover the negative sector created with wide strokes.               */
+    stroker->handle_wide_strokes =
+      FT_BOOL( stroker->line_join != FT_STROKER_LINEJOIN_ROUND  ||
+               ( stroker->subpath_open                        &&
+                 stroker->line_cap == FT_STROKER_LINECAP_BUTT ) );
+
     /* record the subpath start point for each border */
     stroker->subpath_start = *to;
 
+    stroker->angle_in = 0;
+
     return FT_Err_Ok;
   }
 
@@ -1447,6 +1811,7 @@
         FT_Vector*  src_point = left->points  + left->num_points - 1;
         FT_Byte*    src_tag   = left->tags    + left->num_points - 1;
 
+
         while ( src_point >= left->points + left->start )
         {
           *dst_point = *src_point;
@@ -1456,14 +1821,14 @@
             dst_tag[0] &= ~FT_STROKE_TAG_BEGIN_END;
           else
           {
-            FT_Byte  ttag = (FT_Byte)( dst_tag[0] & FT_STROKE_TAG_BEGIN_END );
+            FT_Byte  ttag =
+                       (FT_Byte)( dst_tag[0] & FT_STROKE_TAG_BEGIN_END );
 
 
             /* switch begin/end tags if necessary */
             if ( ttag == FT_STROKE_TAG_BEGIN ||
                  ttag == FT_STROKE_TAG_END   )
               dst_tag[0] ^= FT_STROKE_TAG_BEGIN_END;
-
           }
 
           src_point--;
@@ -1498,6 +1863,7 @@
     {
       FT_StrokeBorder  right = stroker->borders;
 
+
       /* All right, this is an opened path, we need to add a cap between */
       /* right & left, add the reverse of left, then add a final cap     */
       /* between left & right.                                           */
@@ -1526,13 +1892,14 @@
       FT_Angle  turn;
       FT_Int    inside_side;
 
+
       /* close the path if needed */
       if ( stroker->center.x != stroker->subpath_start.x ||
            stroker->center.y != stroker->subpath_start.y )
       {
-        error = FT_Stroker_LineTo( stroker, &stroker->subpath_start );
-        if ( error )
-          goto Exit;
+         error = FT_Stroker_LineTo( stroker, &stroker->subpath_start );
+         if ( error )
+           goto Exit;
       }
 
       /* process the corner */
@@ -1550,19 +1917,23 @@
         if ( turn < 0 )
           inside_side = 1;
 
-        error = ft_stroker_inside( stroker, inside_side );
+        error = ft_stroker_inside( stroker,
+                                   inside_side,
+                                   stroker->subpath_line_length );
         if ( error )
           goto Exit;
 
         /* process the outside side */
-        error = ft_stroker_outside( stroker, 1 - inside_side );
+        error = ft_stroker_outside( stroker,
+                                    1 - inside_side,
+                                    stroker->subpath_line_length );
         if ( error )
           goto Exit;
       }
 
       /* then end our two subpaths */
-      ft_stroke_border_close( stroker->borders + 0, TRUE );
-      ft_stroke_border_close( stroker->borders + 1, FALSE );
+      ft_stroke_border_close( stroker->borders + 0, FALSE );
+      ft_stroke_border_close( stroker->borders + 1, TRUE );
     }
 
   Exit:
@@ -1684,9 +2055,9 @@
 
     FT_Error    error;
 
-    FT_Int   n;         /* index of contour in outline     */
-    FT_UInt  first;     /* index of first point in contour */
-    FT_Int   tag;       /* current point's state           */
+    FT_Int      n;         /* index of contour in outline     */
+    FT_UInt     first;     /* index of first point in contour */
+    FT_Int      tag;       /* current point's state           */
 
 
     if ( !outline || !stroker )
@@ -1867,9 +2238,10 @@
     return FT_Err_Invalid_Outline;
   }
 
-/* declare an extern to access ft_outline_glyph_class global allocated 
-   in ftglyph.c, and use the FT_OUTLINE_GLYPH_CLASS_GET macro to access 
-   it when FT_CONFIG_OPTION_PIC is defined */
+
+  /* declare an extern to access `ft_outline_glyph_class' globally     */
+  /* allocated  in `ftglyph.c', and use the FT_OUTLINE_GLYPH_CLASS_GET */
+  /* macro to access it when FT_CONFIG_OPTION_PIC is defined           */
 #ifndef FT_CONFIG_OPTION_PIC
   extern const FT_Glyph_Class  ft_outline_glyph_class;
 #endif
@@ -1883,10 +2255,12 @@
                    FT_Stroker   stroker,
                    FT_Bool      destroy )
   {
-    FT_Error  error = FT_Err_Invalid_Argument;
-    FT_Glyph  glyph = NULL;
-    FT_Library library = stroker->library;
-    FT_UNUSED(library);
+    FT_Error    error   = FT_Err_Invalid_Argument;
+    FT_Glyph    glyph   = NULL;
+    FT_Library  library = stroker->library;
+
+    FT_UNUSED( library );
+
 
     if ( pglyph == NULL )
       goto Exit;
@@ -1907,7 +2281,7 @@
     }
 
     {
-      FT_OutlineGlyph  oglyph  = (FT_OutlineGlyph) glyph;
+      FT_OutlineGlyph  oglyph  = (FT_OutlineGlyph)glyph;
       FT_Outline*      outline = &oglyph->outline;
       FT_UInt          num_points, num_contours;
 
@@ -1957,10 +2331,12 @@
                          FT_Bool      inside,
                          FT_Bool      destroy )
   {
-    FT_Error  error = FT_Err_Invalid_Argument;
-    FT_Glyph  glyph = NULL;
-    FT_Library library = stroker->library;
-    FT_UNUSED(library);
+    FT_Error    error   = FT_Err_Invalid_Argument;
+    FT_Glyph    glyph   = NULL;
+    FT_Library  library = stroker->library;
+
+    FT_UNUSED( library );
+
 
     if ( pglyph == NULL )
       goto Exit;
@@ -1981,7 +2357,7 @@
     }
 
     {
-      FT_OutlineGlyph   oglyph  = (FT_OutlineGlyph) glyph;
+      FT_OutlineGlyph   oglyph  = (FT_OutlineGlyph)glyph;
       FT_StrokerBorder  border;
       FT_Outline*       outline = &oglyph->outline;
       FT_UInt           num_points, num_contours;