From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/30842 Path: news.gmane.org!not-for-mail From: Aditya Mahajan Newsgroups: gmane.comp.tex.context Subject: Re: Missing \dddot and \ddddot Date: Fri, 15 Sep 2006 14:14:24 -0400 (EDT) Message-ID: References: <45094609.9090206@cs.com> <4509A537.8040402@wxs.nl> <450A56ED.2070808@wxs.nl> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1158344097 9699 80.91.229.2 (15 Sep 2006 18:14:57 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 15 Sep 2006 18:14:57 +0000 (UTC) Original-X-From: ntg-context-bounces@ntg.nl Fri Sep 15 20:14:55 2006 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from ronja.vet.uu.nl ([131.211.172.88] helo=ronja.ntg.nl) by ciao.gmane.org with esmtp (Exim 4.43) id 1GOID7-0003jZ-OK for gctc-ntg-context-518@m.gmane.org; Fri, 15 Sep 2006 20:14:45 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 3B4251FE5F; Fri, 15 Sep 2006 20:14:45 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 05263-04; Fri, 15 Sep 2006 20:14:40 +0200 (CEST) Original-Received: from ronja.vet.uu.nl (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id B62BC1FE6D; Fri, 15 Sep 2006 20:14:39 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id A9B6C1FE6D for ; Fri, 15 Sep 2006 20:14:35 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 05357-07 for ; Fri, 15 Sep 2006 20:14:29 +0200 (CEST) Original-Received: from skycaptain.mr.itd.umich.edu (smtp.mail.umich.edu [141.211.93.160]) by ronja.ntg.nl (Postfix) with SMTP id 9E6611FE5F for ; Fri, 15 Sep 2006 20:14:27 +0200 (CEST) Original-Received: FROM aditya.engin.umich.edu (udhcp-wlan80.public.engin.umich.edu [141.213.120.90]) BY skycaptain.mr.itd.umich.edu ID 450AED80.7237E.7840 ; 15 Sep 2006 14:14:25 -0400 Original-To: mailing list for ConTeXt users In-Reply-To: <450A56ED.2070808@wxs.nl> X-Virus-Scanned: amavisd-new at ntg.nl X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.7 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl X-Virus-Scanned: amavisd-new at ntg.nl Xref: news.gmane.org gmane.comp.tex.context:30842 Archived-At: On Fri, 15 Sep 2006, Hans Hagen wrote: > Aditya Mahajan wrote: >> On Thu, 14 Sep 2006, Hans Hagen wrote: >> >> >>> Aditya Mahajan wrote: >>> >>>> On Thu, 14 Sep 2006, WN wrote: >>>> >>>> >>>> >>>>> Hello, >>>>> I need to use \dddot and \ddddot in one of my documents, does anyone >>>>> know how to >>>>> define these math symbols. >>>>> >>>>> >>>> The trouble is that most fonts do not contain these accents. >>>> amsmath.sty gets over this definition by faking these symbols. It is >>>> easy to port these definitions to context. >>>> >>>> amsmath.sty definition >>>> >>>> \newcommand{\dddot}[1]{% >>>> {\mathop{#1}\limits^{\vbox to-1.4\ex@{\kern-\tw@\ex@ >>>> \hbox{\normalfont ...}\vss}}}} >>>> \newcommand{\ddddot}[1]{% >>>> {\mathop{#1}\limits^{\vbox to-1.4\ex@{\kern-\tw@\ex@ >>>> \hbox{\normalfont....}\vss}}}} >>>> >>>> >>>> Converting to context >>>> >>>> %--------------------%<------------------------------------ >>>> \unprotect >>>> >>>> % The true copy of amsmath definitions >>>> \def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@ ...}\vss}}} >>>> \def\amsddddot{\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@....}\vss}}} >>>> >>>> % I do not understand why you need to give negative height >>>> >>>> >>> \setbox\scratchbox{..} \ht\scratchbox0pt \dp\scratchbox-2pt >>> >> >> I was wondering why amstex definition does this, as the 1.4ex depth >> was too big. Then I realized that it is not 1.4ex but 1.4\ex@ with >> \ex@ as .2326ex. ughh....the ugly syntax of plain tex... >> >> So here is a more reliable reproduction of amstex dddot and ddddot >> >> \newdimen\amstexex >> >> \amstexex = .2326ex >> > what's this funny number based on, somehow related to interlinespace? > > one cannot define a measure globally this way, since an ex is font > dependent,; > > \def\amstexex{\dimexpr.08\lineheight\relax} The latex package amsgen.sty define it more carefully \newdimen\ex@ \addto@hook\every@math@size{\compute@ex@} \def\compute@ex@{% \begingroup \dimen@-\f@size\p@ \ifdim\dimen@<-20\p@ \global\ex@ 1.5\p@ \else \advance\dimen@10\p@ \multiply\dimen@\tw@ \edef\@tempa{\ifdim\dimen@>\z@ -\fi}% \dimen@ \ifdim\dimen@<\z@ -\fi \dimen@ \advance\dimen@-\@m sp % fudge factor \vfuzz\p@ \def\do{\ifdim\dimen@>\z@ \vfuzz=.97\vfuzz \advance\dimen@ -\p@ \@xp\do \fi}% \do \dimen@\p@ \advance\dimen@-\vfuzz \global\ex@\p@ \global\advance\ex@ \@tempa\dimen@ \fi \endgroup } Aditya