PR: Add logic to handle traceback color configuration

spyder_kernels/console/kernel.py

@@ -639,6 +639,8 @@ def set_configuration(self, conf):
                     ret["special_kernel_error"] = value
             elif key == "color scheme":
                 self.set_color_scheme(value)
+            elif key == "traceback_highlight_style":
+                self.set_traceback_syntax_highlighting(value)
             elif key == "jedi_completer":
                 self.set_jedi_completer(value)
             elif key == "greedy_completer":
@@ -660,10 +662,34 @@ def set_color_scheme(self, color_scheme):
         if color_scheme == "dark":
             # Needed to change the colors of tracebacks
             self.shell.run_line_magic("colors", "linux")
-            self.set_sympy_forecolor(background_color='dark')
         elif color_scheme == "light":
             self.shell.run_line_magic("colors", "lightbg")
-            self.set_sympy_forecolor(background_color='light')
+        self.set_sympy_forecolor(background_color=color_scheme)
+        self.set_traceback_highlighting(color_scheme)
+
+    def set_traceback_highlighting(self, color_scheme):
+        """Set the traceback highlighting color."""
+        color = 'bg:ansigreen' if color_scheme == 'dark' else 'bg:ansiyellow'
+        from IPython.core.ultratb import VerboseTB
+
+        if getattr(VerboseTB, 'tb_highlight', None) is not None:
+            VerboseTB.tb_highlight = color
+        elif getattr(VerboseTB, '_tb_highlight', None) is not None:
+            VerboseTB._tb_highlight = color
+
+    def set_traceback_syntax_highlighting(self, syntax_style):
+        """Set the traceback syntax highlighting style."""
+        import IPython.core.ultratb
+        from IPython.core.ultratb import VerboseTB
+
+        from spyder_kernels.utils.style import create_style_class
+
+        IPython.core.ultratb.get_style_by_name = create_style_class
+
+        if getattr(VerboseTB, 'tb_highlight_style', None) is not None:
+            VerboseTB.tb_highlight_style = syntax_style
+        elif getattr(VerboseTB, '_tb_highlight_style', None) is not None:
+            VerboseTB._tb_highlight_style = syntax_style
 
     def get_cwd(self):
         """Get current working directory."""

spyder_kernels/console/start.py

@@ -69,9 +69,6 @@ def kernel_config():
         # Don't load nor save history in our IPython consoles.
         spy_cfg.HistoryAccessor.enabled = False
 
-    # Until we implement Issue 1052
-    spy_cfg.InteractiveShell.xmode = 'Plain'
-
     # Jedi completer.
     jedi_o = os.environ.get('SPY_JEDI_O') == 'True'
     spy_cfg.IPCompleter.use_jedi = jedi_o

spyder_kernels/customize/umr.py

@@ -92,7 +92,7 @@ def run(self):
         # Report reloaded modules
         if self.verbose and modnames_to_reload:
             modnames = modnames_to_reload
-            print("\x1b[4;33m%s\x1b[24m%s\x1b[0m"
+            print("\x1b[1;4;31m%s\x1b[24m%s\x1b[0m"
                   % ("Reloaded modules", ": "+", ".join(modnames)))
 
         return modnames_to_reload

spyder_kernels/utils/style.py

@@ -0,0 +1,111 @@
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2009- Spyder Kernels Contributors
+#
+# Licensed under the terms of the MIT License
+# (see spyder_kernels/__init__.py for details)
+# -----------------------------------------------------------------------------
+
+"""
+Style for IPython Console
+"""
+
+# Third party imports
+from pygments.style import Style
+from pygments.token import (Name, Keyword, Comment, String, Number,
+                            Punctuation, Operator)
+
+
+def create_pygments_dict(color_scheme_dict):
+    """
+    Create a dictionary that saves the given color scheme as a
+    Pygments style.
+    """
+
+    def give_font_weight(is_bold):
+        if is_bold:
+            return 'bold'
+        else:
+            return ''
+
+    def give_font_style(is_italic):
+        if is_italic:
+            return 'italic'
+        else:
+            return ''
+
+    color_scheme = color_scheme_dict
+
+    fon_c, fon_fw, fon_fs = color_scheme['normal']
+    font_color =  fon_c
+    font_font_weight = give_font_weight(fon_fw)
+    font_font_style = give_font_style(fon_fs)
+    key_c, key_fw, key_fs = color_scheme['keyword']
+    keyword_color =  key_c
+    keyword_font_weight = give_font_weight(key_fw)
+    keyword_font_style = give_font_style(key_fs)
+    bui_c, bui_fw, bui_fs = color_scheme['builtin']
+    builtin_color =  bui_c
+    builtin_font_weight = give_font_weight(bui_fw)
+    builtin_font_style = give_font_style(bui_fs)
+    str_c, str_fw, str_fs = color_scheme['string']
+    string_color =  str_c
+    string_font_weight = give_font_weight(str_fw)
+    string_font_style = give_font_style(str_fs)
+    num_c, num_fw, num_fs = color_scheme['number']
+    number_color =  num_c
+    number_font_weight = give_font_weight(num_fw)
+    number_font_style = give_font_style(num_fs)
+    com_c, com_fw, com_fs = color_scheme['comment']
+    comment_color =  com_c
+    comment_font_weight = give_font_weight(com_fw)
+    comment_font_style = give_font_style(com_fs)
+    def_c, def_fw, def_fs = color_scheme['definition']
+    definition_color =  def_c
+    definition_font_weight = give_font_weight(def_fw)
+    definition_font_style = give_font_style(def_fs)
+    ins_c, ins_fw, ins_fs = color_scheme['instance']
+    instance_color =  ins_c
+    instance_font_weight = give_font_weight(ins_fw)
+    instance_font_style = give_font_style(ins_fs)
+
+    font_token = font_font_style + ' ' + font_font_weight + ' ' + font_color
+    definition_token = (definition_font_style + ' ' + definition_font_weight +
+                        ' ' + definition_color)
+    builtin_token = (builtin_font_style + ' ' + builtin_font_weight + ' ' +
+                     builtin_color)
+    instance_token = (instance_font_style + ' ' + instance_font_weight + ' ' +
+                      instance_color)
+    keyword_token = (keyword_font_style + ' ' + keyword_font_weight + ' ' +
+                     keyword_color)
+    comment_token = (comment_font_style + ' ' + comment_font_weight + ' ' +
+                     comment_color)
+    string_token = (string_font_style + ' ' + string_font_weight + ' ' +
+                    string_color)
+    number_token = (number_font_style + ' ' + number_font_weight + ' ' +
+                    number_color)
+
+    syntax_style_dic = {Name: font_token.strip(),
+                        Name.Class: definition_token.strip(),
+                        Name.Function: definition_token.strip(),
+                        Name.Builtin: builtin_token.strip(),
+                        Name.Builtin.Pseudo: instance_token.strip(),
+                        Keyword: keyword_token.strip(),
+                        Keyword.Type: builtin_token.strip(),
+                        Comment: comment_token.strip(),
+                        String: string_token.strip(),
+                        Number: number_token.strip(),
+                        Punctuation: font_token.strip(),
+                        Operator.Word: keyword_token.strip()}
+
+    return syntax_style_dic
+
+
+def create_style_class(color_scheme_dict):
+    """Create a Pygments Style class with the given color scheme."""
+
+    class StyleClass(Style):
+        default_style = ""
+        styles = create_pygments_dict(color_scheme_dict)
+
+    return StyleClass