[patch] fix another End keypress lockup in the viewer

[Roland Illig]

Pavel Tsekov wrote:
> Hello,
> 
> On Mon, 15 Aug 2005, Roland Illig wrote:
> 
> 
>>Because we are in text wrap mode. Internally the viewer stores the
>>"unwrapped" coordinates. When you want to go one line up, you have to
>>distinguish whether you are inside a long line or at the beginning of a
>>line. This is what the code does.
> 
> 
> Well, maybe the cache should be changed then. And btw this was idea that I
> have not investigated fully it just crossed my mind. But what is done now
> is clearly suboptimal.

If the cache was changed, the code for the non-wrapping text mode would 
become more complicated, just as the text_wrap_mode code is now.

I decided to store the unwrapped coordinates in the cache because the 
user might change the screen size, which would invalidate the whole 
cache if it contained the wrapped coordinates. The unwrapped coordinates 
also make displaying the current position very easy.

Roland