Re: About tex.error (and logs.texerrormessage)

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El lun, 3 ago 2026 a la(s) 3:02=E2=80=AFa.m., Hans Hagen via ntg-context (
[email protected]) escribi=C3=B3:

> On 8/3/2026 9:29 AM, Jairo A. del Rio wrote:
> > Hi, list! When one tries to print non-ASCII characters using
> > logs.texerrormessage, based on tex.error, "weird character" and a
> > negative value is printed and characters are just ignored. This warning
> > comes from here in texprinting.c:
> >
> >   153 =E2=94=82 void tex_print_char(int s)
> >   154 =E2=94=82 {
> >   155 =E2=94=82     if (s < 0 || s > 255) {
> >   156 =E2=94=82         tex_formatted_warning("print", "weird character=
 %i", s);
> >
> > I wonder whether a cast is needed here or it's rather a bug coming from
> > custom compiling flags as it is my case.
>
> Unless I did something wrong, this one should never be called with a
> negative or > 255 integer as it eventually outputs one byte. If there
> are unicode characters printed they go via the utf serializer (that
> iself then outputs per char). So, this test is kind of redundant but if
> you somehow have > 255 integers going into it, the test indicates an
> error anyway. Fwiw, this logging is kind of complex as we have log file
> in parallel to terminal output and in other printing routines also pipe
> into strings.
>

I removed the test and recompiled both luametatex and ConTeXt. Now Unicode
characters are printed normally and everything else seems to work as I
compile some documents


> (The engine is - and always was - outputting unbuffered because
> otherwise users can be puzzled by the lack of output while tex is
> working hard on something, esp on machine 40 years ago. here we put a
> lot of effort in making it as efficient as possible, given the
> constraints. Also think of Lua beging in the game with output.)
>
> Hans
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>
> _________________________________________________________________________=
__________
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> the Wiki!
>
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>
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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote g=
mail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">El lun, 3 ago 2=
026 a la(s) 3:02=E2=80=AFa.m., Hans Hagen via ntg-context (<a href=3D"mailt=
o:[email protected]">[email protected]</a>) escribi=C3=B3:<br></div><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:=
1px solid rgb(204,204,204);padding-left:1ex">On 8/3/2026 9:29 AM, Jairo A. =
del Rio wrote:<br>
&gt; Hi, list! When one tries to print non-ASCII characters using <br>
&gt; logs.texerrormessage, based on tex.error, &quot;weird character&quot; =
and a <br>
&gt; negative value is printed and characters are just ignored. This warnin=
g <br>
&gt; comes from here in texprinting.c:<br>
&gt; <br>
&gt;=C2=A0 =C2=A0153 =E2=94=82 void tex_print_char(int s)<br>
&gt;=C2=A0 =C2=A0154 =E2=94=82 {<br>
&gt;=C2=A0 =C2=A0155 =E2=94=82 =C2=A0 =C2=A0 if (s &lt; 0 || s &gt; 255) {<=
br>
&gt;=C2=A0 =C2=A0156 =E2=94=82 =C2=A0 =C2=A0 =C2=A0 =C2=A0 tex_formatted_wa=
rning(&quot;print&quot;, &quot;weird character %i&quot;, s);<br>
&gt; <br>
&gt; I wonder whether a cast is needed here or it&#39;s rather a bug coming=
 from <br>
&gt; custom compiling flags as it is my case.<br>
<br>
Unless I did something wrong, this one should never be called with a <br>
negative or &gt; 255 integer as it eventually outputs one byte. If there <b=
r>
are unicode characters printed they go via the utf serializer (that <br>
iself then outputs per char). So, this test is kind of redundant but if <br=
>
you somehow have &gt; 255 integers going into it, the test indicates an <br=
>
error anyway. Fwiw, this logging is kind of complex as we have log file <br=
>
in parallel to terminal output and in other printing routines also pipe <br=
>into strings.<br></blockquote><div><br></div><div>I removed the test and r=
ecompiled both luametatex and ConTeXt. Now Unicode characters are printed n=
ormally and everything else seems to work as I compile some documents</div>=
<div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
(The engine is - and always was - outputting unbuffered because <br>
otherwise users can be puzzled by the lack of output while tex is <br>
working hard on something, esp on machine 40 years ago. here we put a <br>
lot of effort in making it as efficient as possible, given the <br>
constraints. Also think of Lua beging in the game with output.)<br>
<br>
Hans<br>
<br>
-----------------------------------------------------------------<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0Hans Hagen | PRAGMA ADE<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Ridderstraat 27 | 80=
61 GH Hasselt | The Netherlands<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 tel: 038 477 53 69 | <a href=3D"http://www.prag=
ma-ade.nl" rel=3D"noreferrer" target=3D"_blank">www.pragma-ade.nl</a> | <a =
href=3D"http://www.pragma-pod.nl" rel=3D"noreferrer" target=3D"_blank">www.=
pragma-pod.nl</a><br>
-----------------------------------------------------------------<br>
___________________________________________________________________________=
________<br>
If your question is of interest to others as well, please add an entry to t=
he Wiki!<br>
<br>
maillist : <a href=3D"mailto:[email protected]" target=3D"_blank">ntg-cont=
[email protected]</a> / <a href=3D"https://mailman.ntg.nl/mailman3/lists/ntg-conte=
xt.ntg.nl" rel=3D"noreferrer" target=3D"_blank">https://mailman.ntg.nl/mail=
man3/lists/ntg-context.ntg.nl</a><br>
webpage=C2=A0 : <a href=3D"https://www.pragma-ade.nl" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.pragma-ade.nl</a> / <a href=3D"https://context.=
aanhet.net" rel=3D"noreferrer" target=3D"_blank">https://context.aanhet.net=
</a> (mirror)<br>
archive=C2=A0 : <a href=3D"https://github.com/contextgarden/context" rel=3D=
"noreferrer" target=3D"_blank">https://github.com/contextgarden/context</a>=
<br>
wiki=C2=A0 =C2=A0 =C2=A0: <a href=3D"https://wiki.contextgarden.net" rel=3D=
"noreferrer" target=3D"_blank">https://wiki.contextgarden.net</a><br>
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</blockquote></div></div>

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If your question is of interest to others as well, please add an entry to the Wiki!

maillist : [email protected] / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
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