What to do with math-ext.tex

* What to do with math-ext.tex
@ 2006-07-07  3:38 David Arnold
  2006-07-10 18:30 ` Hans Hagen
  0 siblings, 1 reply; 6+ messages in thread
From: David Arnold @ 2006-07-07  3:38 UTC (permalink / raw)
  Cc: Jacob Prystowsky, Bruce Wagner

All,

I have a file in my document directory called math-ext.tex. Isn't  
this part of the core now? Can I get rid of it?

It starts out like this:

%D \module
%D   [       file=math-ext,
%D        version=2006.01.14,
%D          title=\CONTEXT\ Math Macros,
%D       subtitle=Extra Macros,
%D         author={Hans Hagen \& Taco Hoekwater},
%D           date=\currentdate,
%D      copyright=\PRAGMA]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

%M \ifx\startalign\undefined \input math-ext.tex \fi

% some simple math constructs (based on user requests)
%
% preliminary

\unprotect

% adapted stuff

% we need to make this plain code a bit more 'readable'

\def\openup
   {\afterassignment\dopenup\scratchdimen=}

\def\dopenup
   {\advance\lineskip     \scratchdimen
    \advance\baselineskip \scratchdimen
    \advance\lineskiplimit\scratchdimen}

\def\jot{.25\bodyfontsize} % plain tex: 3 pt (todo: better name)

\newif\ifdt@p

\def\displ@y % \presetdisplayspacing or so
   {\global\dt@ptrue
    \openup\jot
    \mathsurround\zeropoint
    \everycr{\noalign{%
       \ifdt@p
         \global\dt@pfalse
         \ifdim\prevdepth>-\thousandpoint
           \vskip-\lineskiplimit
           \vskip\normallineskiplimit
         \fi
       \else

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