[luatex] fine grained discretionary's penalty

[Hans Hagen]

On 3/14/2015 5:57 PM, Élie Roux wrote:
> Le 14/03/2015 15:17, Élie Roux a écrit :
>> Dear All,
>>
>> First I would like to remind a bug I've reported here[1] and that has
>> already been discussed on the list here[2]. It starts to be blocking for
>> me... do you think it's possible for someone who doesn't really know
>> LuaTeX codebase to work on it?
>
> The answer seems to be yes: this patch fixes the issue for my case:
>
> Index: source/texk/web2c/luatexdir/tex/linebreak.w
> ===================================================================
> --- source/texk/web2c/luatexdir/tex/linebreak.w	(révision 5187)
> +++ source/texk/web2c/luatexdir/tex/linebreak.w	(copie de travail)
> @@ -1950,7 +1950,7 @@
>                   /* The following code knows that discretionary texts
> contain
>                      only character nodes, kern nodes, box nodes, and rule
>                      nodes. */
> -                if (second_pass) {
> +                if (second_pass || subtype(cur_p) == discretionary_disc) {
>                       int actual_penalty = hyphen_penalty;
>                       if (subtype(cur_p) == automatic_disc)
>                           actual_penalty = ex_hyphen_penalty;
>
> Is it ok or are there other subtypes that need to be included?

Adding stuff at that level is not going to happen in this stage of 
freezing for texlive 2015.

I'll have a look at it but a change in such core functionality doesn't 
come easy (there are some more things possible so maybe as part of that).

Hans


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