[luatex] LuaTeX v1: Two questions from testing

[Hans Hagen]

On 10/13/2016 9:01 AM, Joseph Wright wrote:
> On 13/10/2016 07:33, Joseph Wright wrote:
>> Hello,
>>
>> Testing LuaTeX v1, there are relatively few changes from v0.95. However,
>> I've found one logging (?) change and one hyphenation change I didn't
>> expect. With example
>>
>>     \hsize 15em
>>     This is a supercalifragilisticexpialidocious%
>>      \hbox to 1em{}
>>      sentence.
>>     \tracingall
>>     \belowdisplayskip=0pt %
>>     $$
>>     y = mx + c
>>     $$
>>      \bye
>>
>> The results are different from pdfTeX in two ways. The empty \hbox does
>> not prevent hyphenation, which it has to-date (so this is not a result
>> of other hyphenation changes). The log also lacks the zero skip after
>> the display.
>>
>> It's not clear to me if either of these changes is deliberate: what's
>> the situation?
>>
>> Josph
>
> Also, I assume that the fact the following doesn't show a \discretionary
> is deliberate:
>
>     \tracingall
>     119-139
>      \bye

\hjcode`1=`1 \hjcode`2=`1 \hjcode`3=`1 \hjcode`4=`1

\hsize1mm 12-34 \par

btw, disc nodes are now logged differently (pre,post,replace and penalty)

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