Module util

Small helpers.

Functions

• block_padding
  Get the padding the block imposes as Padding.
• block_size
  Get the padding the block imposes as a Size.
• fill_buf_area
  Fill the given area of the buffer.
• reset_buf_area
  Reset an area of the buffer.
• revert_style
  Returns a new style with fg and bg swapped.
• view_buffer
  Copy a tmp buffer to another buffer.