[syslinux] [bug] 5.10: TAB displays only one line of labels

[Gene Cumm]

On Thu, Jun 13, 2013 at 5:51 AM, Ady <ady-sf at hotmail.com> wrote:
> Hello,
>
> As the subject of the email says, pressing TAB from the "boot:"
> prompt displays only one line of labels. But this only happens under
> certain circumstances, not always.
>
> Obviously, to be able to see this problem you need enough labels.
>
> If TAB is pressed as the first step in the "boot:" prompt, then all
> labels are displayed. If any kernel is launched and it returns back
> to the "boot:" prompt and then the first step is to press TAB, then
> all labels are displayed.
>
> But, if any other combination of keys is pressed before TAB, then
> only one line of labels is displayed.
>
> For example:
> 1_ boot with ISOLINUX 5.10 to the "boot:" prompt;
> 2_ press ctrl+v (or any letter and delete it back);
> 3_ now press TAB;
>
> and under these circumstances, only one line of labels is displayed.
>
> Note that in the above point #2, if a letter is typed in, it should
> be also deleted back from the boot prompt before pressing TAB;
> otherwise only the labels starting with that letter are displayed.
> The latter behavior is, of course, normal and expected, but it would
> probably prevent us from showing the issue I'm reporting here.
>
> If more details or tests are required, just let me know.

Confirmed.  Tested pxelinux.0 from 5.00 and 5.10.  It appears to be an
issue of not having the line wrap in a consistent state.  Returning
from a COM32 module does reset it.

--
-Gene