2 more fbcon rotation bugs

[Knut Petersen <Knut_Petersen@t-online.de>]

Hi Antonino,

For rotation values of 1 and 3 in combination with unusual font heights 
there are
serious cursor problems:

    standard 8x16 and arial 22x24: ok
    comic 16x26 and bitstream 16x30: broken as described below.

1: Load e.g. bitstream 16x30 font and switch to rotation 1.
2: At the bash prompt, type "asdf  > qwer" without the quotation marks 
and without
    hitting enter.
3: Try to delete the letters q,w,e,r and reenter them. Everything works 
fine.
4: Now place the cursor immediately behind the letter f and delete it. 
Everything ok.
5. Hit the key f to reenter that letter .... now something breaks:
    a: an f is inserted at the correct position
    b: an f flashes for a short period at the place of the first space, 
then it is overwritten
        by the correct space character and the blinking cursor
    c: the > at the right of the cursor is permanently overwritten with 
a blank and a
        frozen underline of the cursor, the line now reads asdf _ _ qwer.

Deleting and reinserting the other characters before the > gives similar 
results, e.g.
for the letter s the result is "asdd > qwer", the first d switching from 
s to d fast but
visible and with the blinking cursor, the 2nd d (that should be an f) 
permanently
underlined.

No problems are visible if only one string of letters (even a long one) 
is entered and
edited  at the bash prompt.

Any idea where to start? Can you reproduce the odd behaviour? My first 
idea was
to look into ccw_cursor() and cw_cursor(), but as there are no errors 
for long strings
if they do not contain spaces, > or other signs of a special meaning to 
bash, I suppose
that this is not the right/only place to start. My system is slow (Via 
Eden cpu, 533Mhz),
could it be that the bug is invisible on faster machines? ...

cu,
 Knut


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