C code for performance critical sections

[ian]

There are some performance-critical functions that should be rewritten in C:

• utable.py functions:
  • get_width
  • decode_one
  • decode_one_right
• utils.py functions:
  • move_prev_char
  • move_next_char
  • is_wide_char
  • calc_width
  • calc_text_pos
  • within_double_byte

[ian]

I've created a branch for the work that Rebecca Breu has done: source:urwid/branches/rbreu-cmodule

If anyone knows a cross-platform way to package the module, please submit patches for this branch.

I'm hoping to include this code in 0.9.8, if possible.

[ian]

Rebecca has implemented these functions in source:urwid/branches/rbreu-cmodule

some fixes are in r66. Testing and merging still remain.

[ian]

merged branch to trunk in r76.