[NTG-context] Protrusion cancellation by index term

Hans Hagen pragma at wxs.nl
Fri Apr 1 09:17:51 CEST 2016


On 3/31/2016 10:47 PM, Wolfgang Schuster wrote:
>> Jan Tosovsky <mailto:j.tosovsky at email.cz>
>> 31. März 2016 um 21:28
>>
>> Wow, I am quite satisfied with this solution.
>>
>> Btw, I couldn't find any details for that \leftboundary command either
>> in TeX [1] or ConTeXt [2] command references.
> The \leftboundary command uses a new LuaTeX primitive which means you
> can’t find it in a TeX [1] reference.
>
> spac-ver.mkiv:
>
> \unexpanded\def\leftboundary   {\boundary\plusone}
> \unexpanded\def\rightboundary  {\boundary\plustwo}

it will instruct the protrusion checker to skip the next or previous 
node (e.g. a char or hbox or ...) when looking for an edge

Hans

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