Re: [Bug-ddrescue] Feature request: "Preview" of recently read data

[Scott Dwyer]

On 8/14/2014 12:18 PM, Antonio Diaz Diaz wrote:
> Suggestions about both, the header and the option, are welcome. The 
> least confusing the better. :-)

There is one thing that I think may be important for this option. There 
should be a special condition if there was no data read since the last 
screen update (failed read). You can't just display the read buffer as 
it is unknown what it would contain, and you don't want to display zeros 
as that would be misleading. Possibilities would include blanking out 
the preview output, or using some odd character in place of the hex (XX 
XX XX XX). Another possibility would be to leave the last good data on 
the screen, but then a person would have to be paying attention to see 
that it wasn't changing and look at the last good read time, and not 
everybody will pay attention.

Scott