Closes #108 (Fix default behavior of double_width)

bin/tabview

@@ -47,7 +47,7 @@ def arg_parse():
                         help="Specify column width. 'max' or 'mode' (default) "
                         "for variable widths, or an integer value for "
                         "fixed column width.")
-    parser.add_argument('--double_width', action='store_true',
+    parser.add_argument('--double_width', action='store_true', default=False,
                         help="Force full handling of double-width characters "
                         "for large files (with a performance penalty)")
     return parser.parse_known_args()

tabview/tabview.py

@@ -136,9 +136,9 @@ def _init_double_width(self, dw):
         """
         self.double_width = dw
         # Enable double with character processing for small files
-        if self.double_width is None:
+        if self.double_width is False:
             self.double_width = len(self.data) * self.num_data_columns < 65000
-        if self.double_width:
+        if self.double_width is True:
             self._cell_len = self.__cell_len_dw
         else:
             self._cell_len = len
@@ -1002,7 +1002,7 @@ def main(stdscr, *args, **kwargs):
 
 def view(data, enc=None, start_pos=(0, 0), column_width=20, column_gap=2,
          trunc_char='…', column_widths=None, search_str=None,
-         double_width=None):
+         double_width=False):
     """The curses.wrapper passes stdscr as the first argument to main +
     passes to main any other arguments passed to wrapper. Initializes
     and then puts screen back in a normal state after closing or