[luatex] Glue node without spec field?

Taco Hoekwater taco at elvenkind.com
Thu Jan 7 16:24:48 CET 2010

Manuel Pégourié-Gonnard wrote:
> On 07/01/2010 13:10, Taco Hoekwater wrote:
>> No, that is wrong. spec is *never* an empty node.
>> The spec can be zero though, and that is a static spec with
>> values 0pt plus 0pt minus 0pt. The lua interface treated that
>> wrongly (all other node links cannot be zero, and there was
>> no special case for spec fields).
> Ok. Now the interface is the same as for nay other node, according to my tests.
> So, the user doesn't even need to know that there is something special with 0
> spec, right?

No, that was just an oversight on my part.

>> The non-zero subtype means that this glue matches
>> one of the internal parameters, e.g. 9 == \rightskip,
>> or that it is a leader (values 100-102).
> Thanks for the explanation! I've been wondering about the special subtypes.

They are also documented in the manual ;)

Best wishes,

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