bug#3386: 23.0.94; With long lines next-line sometimes loses the column

[Lars Magne Ingebrigtsen]

"Rommerskirchen, Heinrich (NSN - DE/Munich)"
<heinrich.rommerskirchen@nsn.com> writes:

> If lines are longer than the window, emacs forgets sometimes which is
> the correct column. To trigger this bug do the following:
>
> Create a file, say 'tmp.lst', with the following content:
>  Lines 1, 2 and 4: 200 dots, '.'
>  Line 3: empty
> Start Emacs: 'emacs -Q'
> Open the file 'tmp.lst'
> "M-x set-variable" "truncate-lines" "t"
> C-e
> 3 times 'next-line'
> you end up in the middle of the fourth line instead of at its end

This was recently fixed in Emacs 24 by Eli Zaretskii.

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