Re: tabulated-list: extend truncation into next align-right col

[Tino Calancha <tino.calancha@gmail.com>]

On Tue, 1 Nov 2016, Stefan Monnier wrote:

>> ;; Without computing maximum widths:
>> C1  C2                                       Numbers
>> abc **************************************... 123456
>> abc *******************************************... 1
>> abc ************************************         123
>
> That's exactly what used to happen in *Buffer List* (and the source for
> this TODO item).  It wasn't that bad (I can't remember any user
> complaints about it).
For *Buffer List* maybe was OK that old way.  My concern is that
`tabulated-list' is still a young lib (2011) in an Emacs scale and
a general tool;  that funny truncations might look uglier in future
applications using this lib.

> Admittedly, we could do better: compute the max
> width not of the whole column but of the current line, and the two
> surrounding ones.  This way we'd avoid
>
>    abc **************************************... 123456
>    abc *****************************************... 123
>    abc ************************************         456
>
> yet we'd allow
>
>    abc **************************************... 123456
>    abc **************************************...    123
>    abc *****************************************...   1

Thanks for this suggestion.
This might be good: we get generally longer truncations.  I am
not sure how it looks in big tables, but i can test it.

I will prepare a patch for this alternative truncation.

Tino