[tex-eplain] widering

[Gérald Tenenbaum]

Hello again,

Sorry for my previous message. I have been able to install the yhcmex font
and now get no error in typesetting but the wideparen does not appear in the
output, only the small circle, as shown in the attached screen capture.
Many thanks for your help and kindest regards,

Gérald

ŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠŠ

Gérald Tenenbaum

Professeur

Institut Élie Cartan

Université de Lorraine

BP 70239

54506 Vand¦uvre lès Nancy Cedex

France



Téléphone : +33(0) 383 68 46 02

Télécopie : +33(0) 383 68 45 96

Courriel  : gerald.tenenbaum at univ-lorraine.fr

............................................................................
.....


De :  "Daniel H. Luecking" <luecking at uark.edu>
Date :  mercredi 16 novembre 2016 21:03
À :  Gérald Tenenbaum <gerald.ten at free.fr>, "tex-eplain at tug.org"
<tex-eplain at tug.org>
Objet :  Re: widering



I am going to assume that you want the \widering from

yhmath.sty.



This was a bit tough, mostly because there is a bug

in its definition in yhmath.sty. But here goes:


\input eplain

% load the yh font for \wideparen
\font\yhten  =yhcmex10
\font\yhseven=yhcmex10 at 7pt
\font\yhfive =yhcmex10 at 5pt

% set up the math family for using it
\newfam\yhfam
\textfont\yhfam\yhten
\scriptfont\yhfam\yhseven
\scriptscriptfont\yhfam\yhfive

\def\yhex{\fam\yhfam}

% determine the hex digit for this new math family
\edef\yhhex{\ifcase\yhfam 0\or 1\or 2\or 3\or 4\or 5\or 6\or 7\or 8\or
9\or A\or B\or C\or D\or E\or F\fi}

\def\wideparen{\mathaccent"0\yhhex F3}
\def\ring{\mathaccent"17}
\def\widering#1{\ring{\wideparen{#1}}}
Test: $\widering{ABC}$.

\bye



Oddly, cmr contains the ring accent, but plain TeX doesn't

have a command to access it directly (just \aa for the accent

over an "a").



Dan


Daniel H. Luecking [luecking at uark.edu]
Department of Mathematical Sciences
1 University of Arkansas
Fayetteville, AR, USA 72701-1201

From: tex-eplain <tex-eplain-bounces at tug.org> on behalf of Gérald Tenenbaum
<gerald.ten at free.fr>
Sent: Tuesday, November 15, 2016 5:10 PM
To: tex-eplain at tug.org
Subject: [tex-eplain] widering
 
Hello,

How can one include the LaTeX command \widering into Eplain?
Many thanks for help.
Regards,

Gérald


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