On Tue, 13 Jan 2026 at 01:51, Robert via luatex <[email protected]> wrote:
> On 12.01.26 15:58, luigi scarso wrote:
> >
> > Do you have the same with the luatex-plain format ?
> >
>
> Here is a MWE for -ini mode, which also only yields two protruded
> hyphens instead of three (with luatex or luahbtex 1.21 from TL25), so
> maybe it's something that the luatex-plain format (which I can't test
> right now) fixes, not something that the vanilla plain format breaks?
>
> \catcode`\{=1
> \catcode`\}=2
> \input luatexconfig.tex % enable luatex primitives
> \input luatexiniconfig.tex
> \outputmode=1
> \hsize=10cm
> \vsize=10cm
> \def\\{\hfil\penalty-10000}
> \font\x=cmr10 \x
> \baselineskip=12pt
> \parfillskip=0pt plus 1fil
> \protrudechars2
> \lpcode\font`-=500
>
> \noindent
> \vrule width 4cm height 1mm\\
> -\\
> -foo\\
> -\kern0pt foo\\
> \vrule width 4cm height 1mm
> \end
>
> Best,
>
It doesn't seem like a critical bug -- if it is, maybe we can call it a
feature.
I'll leave it to Vitek to investigate.
In case, we can add \tracingall and see the trace.
\input luatexconfig.tex % enable luatex primitives
\input luatexiniconfig.tex
\def\tracingall{%
\tracingonline=1
\tracingcommands=3
\tracingstats=2
\tracingpages=1
\tracingoutput=1
\tracinglostchars=2
\tracingmacros=2
\tracingparagraphs=1
\tracingrestores=1
\showboxbreadth=65535
\showboxdepth=65535
\errorstopmode
\tracinggroups=1
\tracingifs=1
\tracingscantokens=1
\tracingnesting=1
\tracingassigns=2
}
\tracingall
--
luigi
