<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 26, 2022 at 8:59 AM Henri Menke <<a href="mailto:henri@henrimenke.de">henri@henrimenke.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Mon, 2022-04-25 at 22:09 +0200, Henri Menke wrote:<br>
> Dear devs,<br>
> <br>
> When using delimiter with \left...\right the italic correction<br>
> between<br>
> the preceding letter and the delimiter is dropped. I've tried this<br>
> with<br>
> a few fonts and all show the problem. For Libertinus Math the glyphs<br>
> even overlap.<br>
> <br>
> MWE for mtxrun --script plain (TeX Live 2022)<br>
> <br>
> %\input luaotfload.sty<br>
> \font\mathfont="file:LibertinusMath-<br>
> Regular.otf:mode=base;script=math" at 10pt<br>
> \textfont0=\mathfont<br>
> \textfont2=\mathfont<br>
> <br>
> \Umathcodenum`f="1D453<br>
> \protected\def\langle{\Udelimiter"4"0"27E8\relax}<br>
> \protected\def\rangle{\Udelimiter"5"0"27E9\relax}<br>
> <br>
> $f\rangle$<br>
> <br>
> \nulldelimiterspace=0pt<br>
> $\left.f\right\rangle$<br>
> <br>
> \bye<br>
<br>
Ulrike pointed out \mathitalicsmode=1 on TeX Stack Exchange, but there<br>
is still an issue with sub_mlists:<br>
<br>
%\input luaotfload.sty<br>
\font\mathfont="file:LibertinusMath-Regular.otf:mode=base;script=math" at 10pt<br>
\textfont0=\mathfont<br>
\textfont2=\mathfont<br>
<br>
\Umathcodenum`f="1D453<br>
\protected\def\langle{\Udelimiter"4"0"27E8\relax}<br>
\protected\def\rangle{\Udelimiter"5"0"27E9\relax}<br>
<br>
\mathitalicsmode=1<br>
<br>
$f\rangle$<br>
<br>
\nulldelimiterspace=0pt<br>
$\left.f\right\rangle$<br>
<br>
${-f}\rangle$<br>
<br>
$\left.{-f}\right\rangle$<br>
<br>
\bye<br></blockquote><div><br></div><div>I will check it, but have you already seen mlist.c ?</div></div><div><br></div>-- <br><div dir="ltr" class="gmail_signature">luigi<br></div></div>