diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d2ddfa2..b3466bb6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.4.0] - Unreleased
+
+### Added
+
+- Added Traceback rendering and handler
+- Added rich.constrain
+
+### Fixed
+
+- Fixed unnecessary padding
+
 ## [0.3.3] - 2020-02-04
 
 ### Fixed
diff --git a/rich/console.py b/rich/console.py
index 2c78d19f..2c406f79 100644
--- a/rich/console.py
+++ b/rich/console.py
@@ -830,7 +830,7 @@ class Console:
         if self.record:
             self._record_buffer.extend(buffer)
         del self.buffer[:]
-        for line in Segment.split_and_crop_lines(buffer, self.width):
+        for line in Segment.split_and_crop_lines(buffer, self.width, pad=False):
             for text, style in line:
                 if style:
                     append(style.render(text, color_system=color_system, reset=True))
diff --git a/rich/segment.py b/rich/segment.py
index d2a80fea..2b9a0c45 100644
--- a/rich/segment.py
+++ b/rich/segment.py
@@ -41,14 +41,20 @@ class Segment(NamedTuple):
 
     @classmethod
     def split_and_crop_lines(
-        cls, segments: Iterable["Segment"], length: int, style: Style = None
+        cls,
+        segments: Iterable["Segment"],
+        length: int,
+        style: Style = None,
+        pad: bool = True,
     ) -> Iterable[List["Segment"]]:
         """Split segments in to lines, and crop lines greater than a given length.
 
         Args:
             segments (Iterable[Segment]): An iterable of segments, probably
                 generated from console.render.
-            length (Optional[int]): Desired line length.
+            length (int): Desired line length.
+            style (Style, optional): Style to use for any padding.
+            pad (bool): Enable padding of lines that are less than `length`.
 
         Returns:
             Iterable[List[Segment]]: An iterable of lines of segments.
@@ -64,31 +70,37 @@ class Segment(NamedTuple):
                     if _text:
                         append(cls(_text, style))
                     if new_line:
-                        yield cls.adjust_line_length(lines[-1], length, style=style)
+                        yield cls.adjust_line_length(
+                            lines[-1], length, style=style, pad=pad
+                        )
                         lines.append([])
                         append = lines[-1].append
             else:
                 append(segment)
         if lines[-1]:
-            yield cls.adjust_line_length(lines[-1], length, style=style)
+            yield cls.adjust_line_length(lines[-1], length, style=style, pad=pad)
 
     @classmethod
     def adjust_line_length(
-        cls, line: List["Segment"], length: int, style: Style = None
+        cls, line: List["Segment"], length: int, style: Style = None, pad: bool = True
     ) -> List["Segment"]:
-        """Adjust a line to a given width (cropping or padding as required.
+        """Adjust a line to a given width (cropping or padding as required).
 
         Args:
             segments (Iterable[Segment]): A list of segments in a single line.
             length (int): The desired width of the line.
             style (Style, optional): The style of padding if used (space on the end). Defaults to None.
+            pad (bool, optional): Pad lines with spaces if they are shorter than `length`. Defaults to True. 
 
         Returns:
             List[Segment]: A line of segments with the desired length.
         """
         line_length = sum(len(text) for text, _style in line)
         if line_length < length:
-            return line + [Segment(" " * (length - line_length), style)]
+            if pad:
+                return line + [cls(" " * (length - line_length), style)]
+            else:
+                return line[:]
         elif line_length > length:
             line_length = 0
             new_line: List[Segment] = []
@@ -100,7 +112,7 @@ class Segment(NamedTuple):
                     line_length += segment_length
                 else:
                     text, style = segment
-                    append(Segment(text[: length - line_length], style))
+                    append(cls(text[: length - line_length], style))
                     break
             return new_line
         return line[:]
diff --git a/rich/syntax.py b/rich/syntax.py
index 9406b034..a6be2683 100644
--- a/rich/syntax.py
+++ b/rich/syntax.py
@@ -1,3 +1,4 @@
+import platform
 import textwrap
 from typing import Any, Dict, Optional, Set, Tuple, Union
 
@@ -14,7 +15,8 @@ from .style import Style
 from .text import Text
 from ._tools import iter_first
 
-DEFAULT_THEME = "monokai"
+WINDOWS = platform.system() == "Windows"
+DEFAULT_THEME = "dark"
 
 
 class Syntax:
@@ -166,6 +168,24 @@ class Syntax:
             return len(str(self.start_line + self.code.count("\n"))) + 2
         return 0
 
+    def _get_number_styles(self, console: Console) -> Tuple[Style, Style, Style]:
+        """Get background, number, and highlight styles for line numbers."""
+        background_style = Style(bgcolor=self._pygments_style_class.background_color)
+        if console.color_system in ("256", "truecolor"):
+            number_style = Style.chain(
+                background_style,
+                self._get_theme_style(Token.Text),
+                Style(color=self._get_line_numbers_color()),
+            )
+            highlight_number_style = Style.chain(
+                background_style,
+                self._get_theme_style(Token.Text),
+                Style(bold=True, color=self._get_line_numbers_color(0.9)),
+            )
+        else:
+            number_style = highlight_number_style = Style()
+        return background_style, number_style, highlight_number_style
+
     def __console_width__(self, max_width: int) -> "RenderWidth":
         if self.code_width is not None:
             width = self.code_width + self._numbers_column_width
@@ -199,23 +219,20 @@ class Syntax:
 
         numbers_column_width = self._numbers_column_width
         render_options = options.update(width=code_width + numbers_column_width)
-        background_style = Style(bgcolor=self._pygments_style_class.background_color)
 
-        number_style = Style.chain(
+        (
             background_style,
-            self._get_theme_style(Token.Text),
-            Style(color=self._get_line_numbers_color()),
-        )
-        highlight_number_style = Style.chain(
-            background_style,
-            self._get_theme_style(Token.Text),
-            Style(bold=True, color=self._get_line_numbers_color(0.9)),
-        )
+            number_style,
+            highlight_number_style,
+        ) = self._get_number_styles(console)
 
         highlight_line = self.highlight_lines.__contains__
         _Segment = Segment
         padding = _Segment(" " * numbers_column_width, background_style)
         new_line = _Segment("\n")
+
+        line_pointer = "->" if WINDOWS else "❱ "
+
         for line_no, line in enumerate(lines, self.start_line + line_offset):
             wrapped_lines = console.render_lines(
                 line, render_options, style=background_style
@@ -224,7 +241,7 @@ class Syntax:
                 if first:
                     line_column = str(line_no).rjust(numbers_column_width - 2) + " "
                     if highlight_line(line_no):
-                        yield _Segment("❱ ", number_style)
+                        yield _Segment(line_pointer, number_style)
                         yield _Segment(
                             line_column, highlight_number_style,
                         )
@@ -252,9 +269,9 @@ def __init__(self):
     syntax = Syntax(CODE, "python", line_numbers=False, theme="monokai")
     syntax = Syntax.from_path(
         "rich/segment.py",
-        theme="monokai",
+        theme="fruity",
         line_numbers=True,
-        line_range=(190, 300),
+        # line_range=(190, 300),
         highlight_lines={194},
     )
     console = Console(record=True)
diff --git a/rich/table.py b/rich/table.py
index a6da76a7..02e00476 100644
--- a/rich/table.py
+++ b/rich/table.py
@@ -488,11 +488,13 @@ if __name__ == "__main__":  # pragma: no cover
         expand=True,
         show_footer=True,
         show_edge=True,
+        width=100,
+        style="on blue",
     )
     # table.columns[0].width = 50
     # table.columns[1].ratio = 1
 
-    table.add_row("Hello, World! " * 8, "cake" * 10)
+    table.add_row("Hello, World! " * 3, "cake" * 10)
     from .markdown import Markdown
 
     table.add_row(Markdown("# This is *Markdown*!"), "More text", "Hello WOrld")
diff --git a/rich/traceback.py b/rich/traceback.py
index 4c5c3d22..d98e39e8 100644
--- a/rich/traceback.py
+++ b/rich/traceback.py
@@ -2,6 +2,7 @@ from __future__ import absolute_import
 
 from dataclasses import dataclass, field
 import sys
+import platform
 from traceback import extract_tb
 from types import TracebackType
 from typing import Optional, Type, List
@@ -17,6 +18,7 @@ from .constrain import Constrain
 from .highlighter import RegexHighlighter, ReprHighlighter
 from .padding import Padding
 from .panel import Panel
+from .pygments_themes.base16_dark import base16_default_dark
 from .rule import Rule
 from .segment import Segment
 from .text import Text
@@ -24,6 +26,9 @@ from ._tools import iter_last
 from .syntax import Syntax
 
 
+WINDOWS = platform.system() == "Windows"
+
+
 def install(width: Optional[int] = 100, extra_lines: int = 2) -> None:
     """Install a rich traceback handler.
 
@@ -205,6 +210,7 @@ class Traceback:
     @render_group()
     def _render_stack(self, stack: Stack) -> RenderResult:
         path_highlighter = PathHighlighter()
+        theme = "fruity" if WINDOWS else "monokai"
         for frame in stack.frames:
             text = Text.assemble(
                 (" File ", "traceback.text"),
@@ -220,6 +226,7 @@ class Traceback:
             try:
                 syntax = Syntax.from_path(
                     frame.filename,
+                    theme=theme,
                     line_numbers=True,
                     line_range=(
                         frame.lineno - self.extra_lines,