<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 13px; font-family: 'Lucida Sans', sans-serif;"><div>Many thanks indeed for your concern.</div><div>Yes, you are right I do want the \widering macro from yhmath.sty</div><div>Your file will most probably solve this problem once I install the yhcmex fonts. How can I do this on a mac?</div><div>Kindest regards,</div><div><br></div><div>Gérald</div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">De : </span> "Daniel H. Luecking" <<a href="mailto:luecking@uark.edu">luecking@uark.edu</a>><br><span style="font-weight:bold">Date : </span> mercredi 16 novembre 2016 21:03<br><span style="font-weight:bold">À : </span> Gérald Tenenbaum <<a href="mailto:gerald.ten@free.fr">gerald.ten@free.fr</a>>, "<a href="mailto:tex-eplain@tug.org">tex-eplain@tug.org</a>" <<a href="mailto:tex-eplain@tug.org">tex-eplain@tug.org</a>><br><span style="font-weight:bold">Objet : </span> Re: widering<br></div><div><br></div><div><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><style type="text/css" style="display:none"><!--P{margin-top:0;margin-bottom:0;} --></style><div dir="ltr" style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:'Courier New',monospace;"><p><br></p><p>I am going to assume that you want the \widering from </p><p>yhmath.sty.</p><p><br></p><p>This was a bit tough, mostly because there is a bug </p><p>in its definition in yhmath.sty. But here goes:</p><p><br>
\input eplain</p><p>% load the yh font for \wideparen<br>
\font\yhten =yhcmex10<br>
\font\yhseven=yhcmex10 at 7pt<br>
\font\yhfive =yhcmex10 at 5pt</p><p>% set up the math family for using it<br>
\newfam\yhfam<br>
\textfont\yhfam\yhten<br>
\scriptfont\yhfam\yhseven<br>
\scriptscriptfont\yhfam\yhfive</p><p>\def\yhex{\fam\yhfam}</p><p>% determine the hex digit for this new math family <br>
\edef\yhhex{\ifcase\yhfam 0\or 1\or 2\or 3\or 4\or 5\or 6\or 7\or 8\or<br>
9\or A\or B\or C\or D\or E\or F\fi}<br><br>
\def\wideparen{\mathaccent"0\yhhex F3}<br>
\def\ring{\mathaccent"17}<br>
\def\widering#1{\ring{\wideparen{#1}}}<br>
Test: $\widering{ABC}$.<br><br>
\bye</p><p><br></p><p>Oddly, cmr contains the ring accent, but plain TeX doesn't</p><p>have a command to access it directly (just \aa for the accent </p><p>over an "a").</p><p><br></p><p>Dan<br></p><p><br></p><div id="Signature"><div name="divtagdefaultwrapper" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:; margin:0"><div style="font-family:Tahoma; font-size:13px"><div style="font-family:Tahoma; font-size:13px"><div style="font-family:Tahoma; font-size:13px"><div style="font-family:Tahoma; font-size:13px"><div style="font-family:Tahoma; font-size:13px"><div style="font-family:Tahoma; font-size:13px"><font size="3" face="Courier New">Daniel H. Luecking [<a href="mailto:luecking@uark.edu">luecking@uark.edu</a>]
<br>
Department of Mathematical Sciences<br>
1 University of Arkansas<br>
Fayetteville, AR, USA 72701-1201</font><br></div></div></div></div></div></div></div></div><div style="word-wrap:break-word; color:rgb(0,0,0); font-size:13px; font-family:'Lucida Sans',sans-serif"><hr tabindex="-1" style="display:inline-block; width:98%"><div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" color="#000000" face="Calibri,sans-serif"><b>From:</b> tex-eplain <<a href="mailto:tex-eplain-bounces@tug.org">tex-eplain-bounces@tug.org</a>> on behalf of Gérald Tenenbaum <<a href="mailto:gerald.ten@free.fr">gerald.ten@free.fr</a>><br><b>Sent:</b> Tuesday, November 15, 2016 5:10 PM<br><b>To:</b> <a href="mailto:tex-eplain@tug.org">tex-eplain@tug.org</a><br><b>Subject:</b> [tex-eplain] widering</font><div> </div></div><div><div>Hello,</div><div><br></div><div>How can one include the LaTeX command \widering into Eplain?</div><div>Many thanks for help.</div><div>Regards,</div><div><br></div><div>Gérald</div></div></div></div></div></span></body></html>