Merge from trunk.

11 files changed, 301 insertions, 105 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index d618b30ceba..9e8aedfd36b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,9 +1,65 @@
-2011-07-28  Paul Eggert  <eggert@cs.ucla.edu>
+2011-07-29  Paul Eggert  <eggert@cs.ucla.edu>
 
         * Makefile.in (gl-stamp): move-if-change now in build-aux (Bug#9169).
 
 2011-07-28  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * image.c (check_image_size): Use 1024x1024 if unknown frame (Bug#9189).
+        This is needed if max-image-size is a floating-point number.
+
+2011-07-28  Andreas Schwab  <schwab@linux-m68k.org>
+
+        * print.c (print_object): Print empty symbol as ##.
+
+        * lread.c (read1): Read ## as empty symbol.
+
+2011-07-28  Alp Aker  <alp.tekin.aker@gmail.com>
+
+        * nsfns.m (x_set_foreground_color): Set f->foreground_pixel when
+        setting frame foreground color (Bug#9175).
+        (x_set_background_color): Likewise.
+
+        * nsmenu.m (-setText): Size tooltip dimensions precisely to
+        contents (Bug#9176).
+        (EmacsTooltip -init): Remove bezels and add shadows to
+        tooltip windows.
+
+        * nsterm.m (ns_dumpglyphs_stretch): Avoid overwriting left fringe
+        or scroll bar (Bug#8470).
+
+        * nsfont.m (nsfont_open): Remove assignment to voffset and
+        unnecessary vars hshink, expand, hd, full_height, min_height.
+        (nsfont_draw): Use s->ybase as baseline for glyph drawing (Bug#8913).
+
+        * nsterm.h (nsfont_info): Remove voffset field.
+
+2011-07-28  Alp Aker  <alp.tekin.aker@gmail.com>
+
+        Implement strike-through and overline on NextStep (Bug#8863).
+
+        * nsfont.m (nsfont_open): Use underline position provided by font,
+        instead of hard-coded value of 2.
+        (nsfont_draw): Call ns_draw_text_decoration instead.
+
+        * nsterm.h: Add declaration for ns_draw_text_decoration.
+
+        * nsterm.m (ns_draw_text_decoration): New function for drawing
+        underline, overline, and strike-through.
+        (ns_dumpglyphs_image, ns_dumpglyphs_stretch): Add call to
+        ns_draw_text_decoration.  Change treatment of cursor drawing to
+        accomodate underlining, etc.
+
+2011-07-28  Eli Zaretskii  <eliz@gnu.org>
+
+        * buffer.c (init_buffer_once): Set bidi-display-reordering to t by
+        default.
+
+2011-07-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * alloc.c (memory_full) [!SYNC_INPUT]: Fix signal-related race.
+        Without this fix, if a signal arrives just after memory fills up,
+        'malloc' might be invoked reentrantly.
+
         * image.c (x_check_image_size) [!HAVE_X_WINDOWS]: Return 1.
         In other words, assume that every image size is allowed, on non-X
         hosts.  This assumption is probably wrong, but it lets Emacs compile.
diff --git a/src/alloc.c b/src/alloc.c
index eb0185a8e35..b96fc1f0642 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -3282,12 +3282,16 @@ memory_full (size_t nbytes)
   int enough_free_memory = 0;
   if (SPARE_MEMORY < nbytes)
     {
-      void *p = malloc (SPARE_MEMORY);
+      void *p;
+
+      MALLOC_BLOCK_INPUT;
+      p = malloc (SPARE_MEMORY);
       if (p)
         {
           free (p);
           enough_free_memory = 1;
         }
+      MALLOC_UNBLOCK_INPUT;
     }
 
   if (! enough_free_memory)
diff --git a/src/buffer.c b/src/buffer.c
index a40275db8de..45d6fa36d04 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -4926,7 +4926,7 @@ init_buffer_once (void)
   BVAR (&buffer_defaults, truncate_lines) = Qnil;
   BVAR (&buffer_defaults, word_wrap) = Qnil;
   BVAR (&buffer_defaults, ctl_arrow) = Qt;
-  BVAR (&buffer_defaults, bidi_display_reordering) = Qnil;
+  BVAR (&buffer_defaults, bidi_display_reordering) = Qt;
   BVAR (&buffer_defaults, bidi_paragraph_direction) = Qnil;
   BVAR (&buffer_defaults, cursor_type) = Qt;
   BVAR (&buffer_defaults, extra_line_spacing) = Qnil;
diff --git a/src/image.c b/src/image.c
index fb1d825fa54..d1091aec6f3 100644
--- a/src/image.c
+++ b/src/image.c
@@ -1053,9 +1053,13 @@ check_image_size (struct frame *f, int width, int height)
             && height <= XINT (Vmax_image_size));
   else if (FLOATP (Vmax_image_size))
     {
-      xassert (f);
-      w = FRAME_PIXEL_WIDTH (f);
-      h = FRAME_PIXEL_HEIGHT (f);
+      if (f != NULL)
+        {
+          w = FRAME_PIXEL_WIDTH (f);
+          h = FRAME_PIXEL_HEIGHT (f);
+        }
+      else
+        w = h = 1024;  /* Arbitrary size for unknown frame. */
       return (width <= XFLOAT_DATA (Vmax_image_size) * w
               && height <= XFLOAT_DATA (Vmax_image_size) * h);
     }
diff --git a/src/lread.c b/src/lread.c
index 0613ad037bf..78ff195e990 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -2670,6 +2670,9 @@ read1 (register Lisp_Object readcharfun, int *pch, int first_in_list)
             }
           goto read_symbol;
         }
+      /* ## is the empty symbol.  */
+      if (c == '#')
+        return Fintern (build_string (""), Qnil);
       /* Reader forms that can reuse previously read objects.  */
       if (c >= '0' && c <= '9')
         {
diff --git a/src/nsfns.m b/src/nsfns.m
index 0452086201e..85246a4c25f 100644
--- a/src/nsfns.m
+++ b/src/nsfns.m
@@ -321,6 +321,7 @@ static void
 x_set_foreground_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
 {
   NSColor *col;
+  CGFloat r, g, b, alpha;
 
   if (ns_lisp_to_color (arg, &col))
     {
@@ -332,6 +333,10 @@ x_set_foreground_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
   [f->output_data.ns->foreground_color release];
   f->output_data.ns->foreground_color = col;
 
+  [col getRed: &r green: &g blue: &b alpha: &alpha];
+  FRAME_FOREGROUND_PIXEL (f) =
+    ARGB_TO_ULONG ((int)(alpha*0xff), (int)(r*0xff), (int)(g*0xff), (int)(b*0xff));
+
   if (FRAME_NS_VIEW (f))
     {
       update_face_from_frame_parameter (f, Qforeground_color, arg);
@@ -348,7 +353,7 @@ x_set_background_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
   struct face *face;
   NSColor *col;
   NSView *view = FRAME_NS_VIEW (f);
-  float alpha;
+  CGFloat r, g, b, alpha;
 
   if (ns_lisp_to_color (arg, &col))
     {
@@ -364,10 +369,14 @@ x_set_background_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
   [col retain];
   [f->output_data.ns->background_color release];
   f->output_data.ns->background_color = col;
+
+  [col getRed: &r green: &g blue: &b alpha: &alpha];
+  FRAME_BACKGROUND_PIXEL (f) =
+    ARGB_TO_ULONG ((int)(alpha*0xff), (int)(r*0xff), (int)(g*0xff), (int)(b*0xff));
+
   if (view != nil)
     {
       [[view window] setBackgroundColor: col];
-      alpha = [col alphaComponent];
 
       if (alpha != 1.0)
           [[view window] setOpaque: NO];
diff --git a/src/nsfont.m b/src/nsfont.m
index 76c70aadf9f..60f8c5321aa 100644
--- a/src/nsfont.m
+++ b/src/nsfont.m
@@ -804,8 +804,6 @@ nsfont_open (FRAME_PTR f, Lisp_Object font_entity, int pixel_size)
   font->props[FONT_FILE_INDEX] = Qnil;
 
   {
-    double expand, hshrink;
-    float full_height, min_height, hd;
     const char *fontName = [[nsfont fontName] UTF8String];
     int len = strlen (fontName);
 
@@ -837,26 +835,16 @@ nsfont_open (FRAME_PTR f, Lisp_Object font_entity, int pixel_size)
       [sfont maximumAdvancement].width : ns_char_width (sfont, '0');
 
     brect =  [sfont boundingRectForFont];
-    full_height = brect.size.height;
-    min_height = [sfont ascender] - adjusted_descender;
-    hd = full_height - min_height;
 
-    /* standard height, similar to Carbon. Emacs.app: was 0.5 by default. */
-    expand = 0.0;
-    hshrink = 1.0;
-
-    font_info->underpos = 2; /*[sfont underlinePosition] is often clipped out */
+    font_info->underpos = [sfont underlinePosition];
     font_info->underwidth = [sfont underlineThickness];
     font_info->size = font->pixel_size;
-    font_info->voffset = lrint (hshrink * [sfont ascender] + expand * hd / 2);
 
     /* max bounds */
-    font_info->max_bounds.ascent =
-      lrint (hshrink * [sfont ascender] + expand * hd/2);
+    font_info->max_bounds.ascent = lrint ([sfont ascender]);
     /* Descender is usually negative.  Use floor to avoid
        clipping descenders. */
-    font_info->max_bounds.descent =
-      -lrint (floor(hshrink* adjusted_descender - expand*hd/2));
+    font_info->max_bounds.descent = -lrint (floor(adjusted_descender));
     font_info->height =
       font_info->max_bounds.ascent + font_info->max_bounds.descent;
     font_info->max_bounds.width = lrint (font_info->width);
@@ -1165,7 +1153,7 @@ nsfont_draw (struct glyph_string *s, int from, int to, int x, int y,
 
 
   /* set up for character rendering */
-  r.origin.y += font->voffset + (s->height - font->height)/2;
+  r.origin.y = s->ybase;
 
   col = (NS_FACE_FOREGROUND (face) != 0
          ? ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f)
@@ -1196,20 +1184,7 @@ nsfont_draw (struct glyph_string *s, int from, int to, int x, int y,
 /*[context GSSetTextDrawingMode: GSTextFill]; /// not implemented yet */
       }
 
-    /* do underline */
-    if (face->underline_p)
-      {
-        if (face->underline_color != 0)
-          [ns_lookup_indexed_color (face->underline_color, s->f) set];
-        else
-          [col set];
-        DPSmoveto (context, r.origin.x, r.origin.y + font->underpos);
-        DPSlineto (context, r.origin.x+r.size.width, r.origin.y+font->underpos);
-        if (face->underline_color != 0)
-          [col set];
-      }
-    else
-      [col set];
+    [col set];
 
     /* draw with DPSxshow () */
     DPSmoveto (context, r.origin.x, r.origin.y);
@@ -1255,23 +1230,7 @@ nsfont_draw (struct glyph_string *s, int from, int to, int x, int y,
         CGContextSetTextDrawingMode (gcontext, kCGTextFill);
       }
 
-    if (face->underline_p)
-      {
-        if (face->underline_color != 0)
-          [ns_lookup_indexed_color (face->underline_color, s->f) set];
-        else
-          [col set];
-        CGContextBeginPath (gcontext);
-        CGContextMoveToPoint (gcontext,
-                              r.origin.x, r.origin.y + font->underpos);
-        CGContextAddLineToPoint (gcontext, r.origin.x + r.size.width,
-                                r.origin.y + font->underpos);
-        CGContextStrokePath (gcontext);
-        if (face->underline_color != 0)
-          [col set];
-      }
-    else
-      [col set];
+    [col set];
 
     CGContextSetTextPosition (gcontext, r.origin.x, r.origin.y);
     CGContextShowGlyphsWithAdvances (gcontext, s->char2b + s->cmp_from,
@@ -1287,6 +1246,10 @@ nsfont_draw (struct glyph_string *s, int from, int to, int x, int y,
     CGContextRestoreGState (gcontext);
   }
 #endif  /* NS_IMPL_COCOA */
+
+  /* Draw underline, overline, strike-through. */
+  ns_draw_text_decoration (s, face, col, r.size.width, r.origin.x);
+
   return to-from;
 }
 
diff --git a/src/nsmenu.m b/src/nsmenu.m
index 6931b7a3c01..6bde229ed4d 100644
--- a/src/nsmenu.m
+++ b/src/nsmenu.m
@@ -1228,8 +1228,8 @@ update_frame_tool_bar (FRAME_PTR f)
 
   [textField setEditable: NO];
   [textField setSelectable: NO];
-  [textField setBordered: YES];
-  [textField setBezeled: YES];
+  [textField setBordered: NO];
+  [textField setBezeled: NO];
   [textField setDrawsBackground: YES];
 
   win = [[NSWindow alloc]
@@ -1237,6 +1237,7 @@ update_frame_tool_bar (FRAME_PTR f)
                       styleMask: 0
                         backing: NSBackingStoreBuffered
                           defer: YES];
+  [win setHasShadow: YES];
   [win setReleasedWhenClosed: NO];
   [win setDelegate: self];
   [[win contentView] addSubview: textField];
@@ -1257,17 +1258,15 @@ update_frame_tool_bar (FRAME_PTR f)
 - (void) setText: (char *)text
 {
   NSString *str = [NSString stringWithUTF8String: text];
-  NSRect r = [textField frame];
-  NSSize textSize = [str sizeWithAttributes:
-     [NSDictionary dictionaryWithObject: [[textField font] screenFont]
-                                 forKey: NSFontAttributeName]];
-  NSSize padSize = [[[textField font] screenFont]
-                     boundingRectForFont].size;
-
-  r.size.width = textSize.width + padSize.width/2;
-  r.size.height = textSize.height + padSize.height/2;
-  [textField setFrame: r];
+  NSRect r  = [textField frame];
+  NSSize tooltipDims;
+
   [textField setStringValue: str];
+  tooltipDims = [[textField cell] cellSize];
+
+  r.size.width = tooltipDims.width;
+  r.size.height = tooltipDims.height;
+  [textField setFrame: r];
 }
 
 - (void) showAtX: (int)x Y: (int)y for: (int)seconds
diff --git a/src/nsterm.h b/src/nsterm.h
index f419391a11e..6ea9161c922 100644
--- a/src/nsterm.h
+++ b/src/nsterm.h
@@ -467,7 +467,6 @@ struct nsfont_info
 #endif
   char bold, ital;  /* convenience flags */
   char synthItal;
-  float voffset;  /* mean of ascender/descender offsets */
   XCharStruct max_bounds;
   /* we compute glyph codes and metrics on-demand in blocks of 256 indexed
      by hibyte, lobyte */
@@ -825,6 +824,13 @@ extern unsigned long ns_get_rgb_color (struct frame *f,
                                        float r, float g, float b, float a);
 extern NSPoint last_mouse_motion_position;
 
+/* From nsterm.m, needed in nsfont.m. */
+#ifdef __OBJC__
+extern void
+ns_draw_text_decoration (struct glyph_string *s, struct face *face,
+                         NSColor *defaultCol, CGFloat width, CGFloat x);
+#endif
+
 #ifdef NS_IMPL_GNUSTEP
 extern char gnustep_base_version[];  /* version tracking */
 #endif
diff --git a/src/nsterm.m b/src/nsterm.m
index e45dc1a902d..d4b1a3f8473 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -263,8 +263,6 @@ static void ns_condemn_scroll_bars (struct frame *f);
 static void ns_judge_scroll_bars (struct frame *f);
 void x_set_frame_alpha (struct frame *f);
 
-/* FIXME: figure out what to do with underline_minimum_offset. */
-
 
 /* ==========================================================================
 
@@ -2597,6 +2595,107 @@ ns_get_glyph_string_clip_rect (struct glyph_string *s, NativeRectangle *nr)
   return n;
 }
 
+void
+ns_draw_text_decoration (struct glyph_string *s, struct face *face,
+                         NSColor *defaultCol, CGFloat width, CGFloat x)
+/* --------------------------------------------------------------------------
+   Draw underline, overline, and strike-through on glyph string s.
+   -------------------------------------------------------------------------- */
+{
+  if (s->for_overlaps)
+    return;
+
+  /* Do underline. */
+  if (face->underline_p)
+    {
+      NSRect r;
+      unsigned long thickness, position;
+
+      /* If the prev was underlined, match its appearance. */
+      if (s->prev && s->prev->face->underline_p
+          && s->prev->underline_thickness > 0)
+        {
+          thickness = s->prev->underline_thickness;
+          position = s->prev->underline_position;
+        }
+      else
+        {
+          struct font *font;
+          unsigned long descent;
+
+          font=s->font;
+          descent = s->y + s->height - s->ybase;
+
+          /* Use underline thickness of font, defaulting to 1. */
+          thickness = (font && font->underline_thickness > 0)
+            ? font->underline_thickness : 1;
+
+          /* Determine the offset of underlining from the baseline. */
+          if (x_underline_at_descent_line)
+            position = descent - thickness;
+          else if (x_use_underline_position_properties
+                   && font && font->underline_position >= 0)
+            position = font->underline_position;
+          else if (font)
+            position = lround (font->descent / 2);
+          else
+            position = underline_minimum_offset;
+
+          position = max (position, underline_minimum_offset);
+
+          /* Ensure underlining is not cropped. */
+          if (descent <= position)
+            {
+              position = descent - 1;
+              thickness = 1;
+            }
+          else if (descent < position + thickness)
+            thickness = 1;
+        }
+
+      s->underline_thickness = thickness;
+      s->underline_position = position;
+
+      r = NSMakeRect (x, s->ybase + position, width, thickness);
+
+      if (face->underline_defaulted_p)
+        [defaultCol set];
+      else
+        [ns_lookup_indexed_color (face->underline_color, s->f) set];
+      NSRectFill (r);
+    }
+
+  /* Do overline. We follow other terms in using a thickness of 1
+     and ignoring overline_margin. */
+  if (face->overline_p)
+    {
+      NSRect r;
+      r = NSMakeRect (x, s->y, width, 1);
+
+      if (face->overline_color_defaulted_p)
+        [defaultCol set];
+      else
+        [ns_lookup_indexed_color (face->overline_color, s->f) set];
+      NSRectFill (r);
+    }
+
+  /* Do strike-through.  We follow other terms for thickness and
+     vertical position.*/
+  if (face->strike_through_p)
+    {
+      NSRect r;
+      unsigned long dy;
+
+      dy = lrint ((s->height - 1) / 2);
+      r = NSMakeRect (x, s->y + dy, width, 1);
+
+      if (face->strike_through_color_defaulted_p)
+        [defaultCol set];
+      else
+        [ns_lookup_indexed_color (face->strike_through_color, s->f) set];
+      NSRectFill (r);
+    }
+}
 
 static void
 ns_draw_box (NSRect r, float thickness, NSColor *col, char left_p, char right_p)
@@ -2854,6 +2953,7 @@ ns_dumpglyphs_image (struct glyph_string *s, NSRect r)
   char raised_p;
   NSRect br;
   struct face *face;
+  NSColor *tdCol;
 
   NSTRACE (ns_dumpglyphs_image);
 
@@ -2882,10 +2982,7 @@ ns_dumpglyphs_image (struct glyph_string *s, NSRect r)
   else
     face = FACE_FROM_ID (s->f, s->first_glyph->face_id);
 
-  if (s->hl == DRAW_CURSOR)
-      [FRAME_CURSOR_COLOR (s->f) set];
-  else
-    [ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) set];
+  [ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) set];
 
   if (bg_height > s->slice.height || s->img->hmargin || s->img->vmargin
       || s->img->mask || s->img->pixmap == 0 || s->width != s->background_width)
@@ -2923,6 +3020,27 @@ ns_dumpglyphs_image (struct glyph_string *s, NSRect r)
     [img compositeToPoint: NSMakePoint (x, y + s->slice.height)
                 operation: NSCompositeSourceOver];
 
+  if (s->hl == DRAW_CURSOR)
+    {
+    [FRAME_CURSOR_COLOR (s->f) set];
+    if (s->w->phys_cursor_type == FILLED_BOX_CURSOR)
+      tdCol = ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f);
+    else
+      /* Currently on NS img->mask is always 0. Since
+         get_window_cursor_type specifies a hollow box cursor when on
+         a non-masked image we never reach this clause. But we put it
+         in in antipication of better support for image masks on
+         NS. */
+      tdCol = ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f);
+    }
+  else
+    {
+      tdCol = ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f);
+    }
+
+  /* Draw underline, overline, strike-through. */
+  ns_draw_text_decoration (s, face, tdCol, br.size.width, br.origin.x);
+
   /* Draw relief, if requested */
   if (s->img->relief || s->hl ==DRAW_IMAGE_RAISED || s->hl ==DRAW_IMAGE_SUNKEN)
     {
@@ -2967,22 +3085,49 @@ ns_dumpglyphs_stretch (struct glyph_string *s)
   NSRect r[2];
   int n, i;
   struct face *face;
+  NSColor *fgCol, *bgCol;
 
   if (!s->background_filled_p)
     {
       n = ns_get_glyph_string_clip_rect (s, r);
       *r = NSMakeRect (s->x, s->y, s->background_width, s->height);
 
+      ns_focus (s->f, r, n);
+
+      if (s->hl == DRAW_MOUSE_FACE)
+       {
+         face = FACE_FROM_ID (s->f, MOUSE_HL_INFO (s->f)->mouse_face_face_id);
+         if (!face)
+           face = FACE_FROM_ID (s->f, MOUSE_FACE_ID);
+       }
+      else
+       face = FACE_FROM_ID (s->f, s->first_glyph->face_id);
+
+      bgCol = ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f);
+      fgCol = ns_lookup_indexed_color (NS_FACE_FOREGROUND (face), s->f);
+
       for (i=0; i<n; i++)
         {
           if (!s->row->full_width_p)
             {
+              int overrun, leftoverrun;
+
               /* truncate to avoid overwriting fringe and/or scrollbar */
-              int overrun = max (0, (s->x + s->background_width)
-                                  - (WINDOW_BOX_RIGHT_EDGE_X (s->w)
-                                    - WINDOW_RIGHT_FRINGE_WIDTH (s->w)));
+              overrun = max (0, (s->x + s->background_width)
+                             - (WINDOW_BOX_RIGHT_EDGE_X (s->w)
+                                - WINDOW_RIGHT_FRINGE_WIDTH (s->w)));
               r[i].size.width -= overrun;
 
+              /* truncate to avoid overwriting to left of the window box */
+              leftoverrun = (WINDOW_BOX_LEFT_EDGE_X (s->w)
+                             + WINDOW_LEFT_FRINGE_WIDTH (s->w)) - s->x;
+
+              if (leftoverrun > 0)
+                {
+                  r[i].origin.x += leftoverrun;
+                  r[i].size.width -= leftoverrun;
+                }
+
               /* XXX: Try to work between problem where a stretch glyph on
                  a partially-visible bottom row will clear part of the
                  modeline, and another where list-buffers headers and similar
@@ -2998,30 +3143,37 @@ ns_dumpglyphs_stretch (struct glyph_string *s)
                                       FRAME_PIXEL_WIDTH (s->f));
             }
 
+          [bgCol set];
+
           /* NOTE: under NS this is NOT used to draw cursors, but we must avoid
              overwriting cursor (usually when cursor on a tab) */
           if (s->hl == DRAW_CURSOR)
             {
-              r[i].origin.x += s->width;
-              r[i].size.width -= s->width;
-            }
-        }
+              CGFloat x, width;
 
-      ns_focus (s->f, r, n);
+              x = r[i].origin.x;
+              width = s->w->phys_cursor_width;
+              r[i].size.width -= width;
+              r[i].origin.x += width;
 
-      if (s->hl == DRAW_MOUSE_FACE)
-       {
-         face = FACE_FROM_ID (s->f, MOUSE_HL_INFO (s->f)->mouse_face_face_id);
-         if (!face)
-           face = FACE_FROM_ID (s->f, MOUSE_FACE_ID);
-       }
-      else
-       face = FACE_FROM_ID (s->f, s->first_glyph->face_id);
+              NSRectFill (r[i]);
 
-      [ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), s->f) set];
+              /* Draw overlining, etc. on the cursor. */
+              if (s->w->phys_cursor_type == FILLED_BOX_CURSOR)
+                ns_draw_text_decoration (s, face, bgCol, width, x);
+              else
+                ns_draw_text_decoration (s, face, fgCol, width, x);
+            }
+          else
+            {
+              NSRectFill (r[i]);
+            }
 
-      NSRectFill (r[0]);
-      NSRectFill (r[1]);
+          /* Draw overlining, etc. on the stretch glyph (or the part
+             of the stretch glyph after the cursor). */
+          ns_draw_text_decoration (s, face, fgCol, r[i].size.width,
+                                   r[i].origin.x);
+        }
       ns_unfocus (s->f);
       s->background_filled_p = 1;
     }
@@ -6556,23 +6708,17 @@ Only works on OSX 10.6 or later.  */);
   Vx_toolkit_scroll_bars = Qnil;
 #endif
 
-  /* these are unsupported but we need the declarations to avoid whining
-     messages from cus-start.el */
   DEFVAR_BOOL ("x-use-underline-position-properties",
                x_use_underline_position_properties,
-     doc: /* NOT SUPPORTED UNDER NS.
-*Non-nil means make use of UNDERLINE_POSITION font properties.
+     doc: /*Non-nil means make use of UNDERLINE_POSITION font properties.
 A value of nil means ignore them.  If you encounter fonts with bogus
 UNDERLINE_POSITION font properties, for example 7x13 on XFree prior
-to 4.1, set this to nil.
-
-NOTE: Not supported on Mac yet.  */);
+to 4.1, set this to nil. */);
   x_use_underline_position_properties = 0;
 
   DEFVAR_BOOL ("x-underline-at-descent-line",
                x_underline_at_descent_line,
-     doc: /* NOT SUPPORTED UNDER NS.
-*Non-nil means to draw the underline at the same place as the descent line.
+     doc: /* Non-nil means to draw the underline at the same place as the descent line.
 A value of nil means to draw the underline according to the value of the
 variable `x-use-underline-position-properties', which is usually at the
 baseline level.  The default value is nil.  */);
diff --git a/src/print.c b/src/print.c
index f1907a31465..35f89860843 100644
--- a/src/print.c
+++ b/src/print.c
@@ -1536,13 +1536,19 @@ print_object (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag
         else
           confusing = 0;
 
+        size_byte = SBYTES (name);
+
         if (! NILP (Vprint_gensym) && !SYMBOL_INTERNED_P (obj))
           {
             PRINTCHAR ('#');
             PRINTCHAR (':');
           }
-
-        size_byte = SBYTES (name);
+        else if (size_byte == 0)
+          {
+            PRINTCHAR ('#');
+            PRINTCHAR ('#');
+            break;
+          }
 
         for (i = 0, i_byte = 0; i_byte < size_byte;)
           {
@@ -1555,7 +1561,7 @@ print_object (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag
               {
                 if (c == '\"' || c == '\\' || c == '\''
                     || c == ';' || c == '#' || c == '(' || c == ')'
-                    || c == ',' || c =='.' || c == '`'
+                    || c == ',' || c == '.' || c == '`'
                     || c == '[' || c == ']' || c == '?' || c <= 040
                     || confusing)
                   PRINTCHAR ('\\'), confusing = 0;