On Thu, 13 Mar 2008, Morgan Brassel wrote:
> 3) Aditya, I saw your remark in your 'My Way' concerning the 'multline'
> environment. I must admit I would really be glad to see it appear in
> ConTeXt! I'm afraid I'm not able to implement it myself... I use it a
> lot with amsmath: when a formula is just too long for one line, I put it
> on two with multline. The first part of the formula is left aligned on the
> first line, and the second part is right aligned on the second line. It seems
> impossible to get the same result with only 'align'. Would it be difficult
> to make it available in ConTeXt?
Here is my first attempt. Completely bare-bones right now, but short
enough to show what needs to be done.
\unprotect
\def\startmathlines
[EMAIL PROTECTED]
\def\NC{}
\def\NR{\def\NC{\cr}}
% Hack for number. Should be done by measuring the width of the number
\scratchdimen\dimexpr\displaywidth-4em \relax
\vbox \bgroup
\halign\bgroup
\hbox to \scratchdimen
{\hfil \strut
$\mathsurround\zeropoint\displaystyle{}## [EMAIL PROTECTED]
\hfil}%
\crcr
\hfilneg}
\def\stopmathlines
{\hfilneg
\crcr
\egroup
\egroup}
\protect
\starttext
\placeformula \startformula \startmathlines
\NC f(x) = (a+b)^n \NR
\NC = a^n + n \cdot a^{n-1} b + \cdots + n \cdot a b^{n-1} + b^n \NR
\NC = a^n + n \cdot a^{n-1} b + \cdots + n \cdot a b^{n-1} + b^n \NR
\stopmathlines \stopformula
\stoptext
Taking care of [align=left|right] should be easy. This version will not
break across pages. I cannot figure out how to get rid of the outer \vbox.
Any suggestions?
Aditya
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