recognize colored numeric values properly

Author: astanin

tabulate.py

@@ -158,8 +158,16 @@ def _type(string):
     True
     >>> _type("1") is type(1)
     True
+    >>> _type(u'\x1b[31m42\x1b[0m') is type(42)
+    True
+    >>> _type('\x1b[31m42\x1b[0m') is type(42)
+    True
 
     """
+
+    if isinstance(string, _text_type) or isinstance(string, _binary_type):
+        string = _strip_invisible(string)
+
     if string is None:
         return _none_type
     elif _isint(string):

test_regression.py

@@ -16,3 +16,13 @@ def test_ansi_color_in_table_cells():
     correcttable = u'| test   | test   | test   |\n|:-------|:-------|:-------|\n| test   | \x1b[31mtest\x1b[0m   | \x1b[32mtest\x1b[0m   |'
     print("expected: %r\n\ngot:      %r\n" % (correcttable, formattedtable))
     assert correcttable == formattedtable
+
+
+def test_alignment_of_colored_cells():
+    "Align ANSI-colored values as if they were colorless."
+    colortable = [('test', 42, '\x1b[31m42\x1b[0m'), ('test', 101, '\x1b[32m101\x1b[0m')]
+    colorheaders = ('test', '\x1b[34mtest\x1b[0m', 'test')
+    formatted = tabulate(colortable, colorheaders, 'grid')
+    expected = u'+--------+--------+--------+\n| test   |   \x1b[34mtest\x1b[0m |   test |\n+========+========+========+\n| test   |     42 |     \x1b[31m42\x1b[0m |\n+--------+--------+--------+\n| test   |    101 |    \x1b[32m101\x1b[0m |\n+--------+--------+--------+'
+    print("expected: %r\n\ngot:      %r\n" % (expected, formatted))
+    assert expected == formatted