[luatex] extended registers for \insert

[David Carlisle]

On 29 June 2015 at 23:20, Hans Hagen <pragma at wxs.nl> wrote:
> On 6/29/2015 10:57 PM, David Carlisle wrote:
>>
>> etex and xetex can not use registers higher than 256 with \insert, however
>> the following plain tex works without error with luatex
>>
>>
>>
>> \mathchardef\footins=1000
>>
>> qqq\footnote{1}{zzz}
>>
>> \bye
>>
>> Can this be relied on, and luatex will accept the full box register
>> range with \insert?
>
>
> sure

Thanks for the confirmation.

>
>> If so could \insert be added to the manual in section 2.4 where \box
>> \count etc
>> are listed as accepting 16-bit numbers,
>>
>> Thanks
>>
>> David
>>
>> (It would be nice to avoid the ugly \reserveinserts trick used with etex
>> to
>> preserve space for inserts below 256, but I'm wary of using
>> undocumented features)
>
>
> you can use a different \outputbox
>
> Hans
>
>

Sure that's documented (2.7.12) but no way to infer from that that you
can use \insert with numbers bigger than 255 is there?

David