Re: Fw: request for bug fix of "invisible"

[Kim F. Storm]

Stefan Monnier <address@hidden> writes:

>>> Would someone kindly respond this report?
>>> Thanks in advance.
>
>> Below is a patch which fixes the C-n C-p movement.
>
>> The C-e on "line 3" still works strange because if you place cursor on
>> the 'l', C-x = reports point=8 which is actually the hidden 'l' on
>> line 2, rather than the visible 'l' on line 3 (point=15).
>
>> Stefan, can you comment on this?
>
> Since by default the `invisible' text-property is rear-sticky and
> front-non-sticky, if you insert a char before the "l" of "line3" it will be
> invisible, whereas if you insert a char in front of the "l" of "line2" it
> will not be invisible.  For this reason, the cursor-movement code tries to
> place point in front of "line2" rather than in front of "line3".

So if I have this:

line 1
line 2
line 3

and make line 2 invisible, I get:

line 1
line 3

I place the cursor on the l on line 3, and type x, I get:

line 1
xline 3

Now, if I make line 2 visible again, I end up with

line 1
xline 2
line 3


That's hardly what a "normal" user would expect  (I consider myself
normal in this case :-)


>
> C-e should not presume anything about the visibility of surrounding text.

So if we have

line 1
line 3

from above, place the cursor on l on line 3, and hit C-e, the
cursor is moved to the i on line 3.

Do you say that you think that behaviour is correct ?


-- 
Kim F. Storm <address@hidden> http://www.cua.dk