Support for new foreground setting "strikethrough"

If you are unsure if your terminal supports this, try the following:

echo -e "\e[9mstrikethrough\e[0m"

3 files changed, 16 insertions, 6 deletions

diff --git a/docs/manual/displayattributes.rst b/docs/manual/displayattributes.rst
index f68c0c2..4f800f6 100644
--- a/docs/manual/displayattributes.rst
+++ b/docs/manual/displayattributes.rst
@@ -169,6 +169,11 @@ Foreground and Background Settings
      - NO
      - NO
      - some support
+   * - :ref:`strikethrough <bold-underline-standout>`
+     - YES
+     - NO
+     - NO
+     - some supported
    * - :ref:`"bright" background colors <bright-background>`
      - YES
      - urxvt
@@ -251,9 +256,10 @@ Bold, Underline, Standout
 * ``'standout'``
 * ``'blink'``
 * ``'italics'``
+* ``'strikethrough'``
 
 These settings may be tagged on to foreground colors using commas, eg: ``'light
-gray,underline,bold'``
+gray,underline,bold,strikethrough'``
 
 For monochrome mode combinations of these are the only values that may be used.
 
diff --git a/urwid/display_common.py b/urwid/display_common.py
index 867691d..26f3a5a 100755
--- a/urwid/display_common.py
+++ b/urwid/display_common.py
@@ -91,8 +91,9 @@ _UNDERLINE = 0x04000000
 _BOLD = 0x08000000
 _BLINK = 0x10000000
 _ITALICS = 0x20000000
+_STRIKETHROUGH = 0x40000000
 _FG_MASK = (_FG_COLOR_MASK | _FG_BASIC_COLOR | _FG_HIGH_COLOR |
-    _STANDOUT | _UNDERLINE | _BLINK | _BOLD | _ITALICS)
+    _STANDOUT | _UNDERLINE | _BLINK | _BOLD | _ITALICS | _STRIKETHROUGH)
 _BG_MASK = _BG_COLOR_MASK | _BG_BASIC_COLOR | _BG_HIGH_COLOR
 
 DEFAULT = 'default'
@@ -138,6 +139,7 @@ _ATTRIBUTES = {
     'underline': _UNDERLINE,
     'blink': _BLINK,
     'standout': _STANDOUT,
+    'strikethrough': _STRIKETHROUGH,
 }
 
 def _value_lookup_table(values, size):
@@ -452,7 +454,8 @@ class AttrSpec(object):
               'h8' (color number 8), 'h255' (color number 255)
 
               Setting:
-              'bold', 'italics', 'underline', 'blink', 'standout'
+              'bold', 'italics', 'underline', 'blink', 'standout',
+              'strikethrough'
 
               Some terminals use 'bold' for bright colors.  Most terminals
               ignore the 'blink' setting.  If the color is not given then
@@ -507,6 +510,7 @@ class AttrSpec(object):
     underline = property(lambda s: s._value & _UNDERLINE != 0)
     blink = property(lambda s: s._value & _BLINK != 0)
     standout = property(lambda s: s._value & _STANDOUT != 0)
+    strikethrough = property(lambda s: s._value & _STRIKETHROUGH != 0)
 
     def _colors(self):
         """
@@ -548,7 +552,7 @@ class AttrSpec(object):
         return (self._foreground_color() +
             ',bold' * self.bold + ',italics' * self.italics +
             ',standout' * self.standout + ',blink' * self.blink +
-            ',underline' * self.underline)
+            ',underline' * self.underline + ',strikethrough' * self.strikethrough)
 
     def _set_foreground(self, foreground):
         color = None
@@ -814,7 +818,7 @@ class BaseScreen(object):
             'light magenta', 'light cyan', 'white'
 
             Settings:
-            'bold', 'underline', 'blink', 'standout'
+            'bold', 'underline', 'blink', 'standout', 'strikethrough'
 
             Some terminals use 'bold' for bright colors.  Most terminals
             ignore the 'blink' setting.  If the color is not given then
diff --git a/urwid/raw_display.py b/urwid/raw_display.py
index f88d0b4..b619d82 100644
--- a/urwid/raw_display.py
+++ b/urwid/raw_display.py
@@ -933,7 +933,7 @@ class Screen(BaseScreen, RealTerminal):
             fg = "39"
         st = ("1;" * a.bold + "3;" * a.italics +
               "4;" * a.underline + "5;" * a.blink +
-              "7;" * a.standout)
+              "7;" * a.standout + "9;" * a.strikethrough)
         if a.background_high:
             bg = "48;5;%d" % a.background_number
         elif a.background_basic: