4

I would like to have the formula numbers of the cases environment flush right like regular formulas (not at a fixed distant from the cases like it is by default with the default setting numberdistance=2.5\emwidth). How can I do that?

\starttext

\startplaceformula
    \startformula
        \startcases
            \NC x = 1 \NR[+]
            \NC y = 1 \NR[+]
        \stopcases
    \stopformula
\stopplaceformula

\stoptext

enter image description here

What I want (but with the left bracket):

\starttext

\startplaceformula
    \startformula
        \startalignment[n=1]
            \NC x = 1 \NR[+]
            \NC y = 1 \NR[+]
        \stopalignment
    \stopformula
\stopplaceformula

\stoptext

enter image description here

|improve this question
  • I've tried all sorts of things now, but I can't even get the latter equations numbers to flush right, on TL14. Which version are you running? – morbusg Sep 25 '14 at 10:03
  • 2
    As I replied to a similar question on the context mailing list, this is currently not possible. – Aditya Sep 25 '14 at 19:32
  • 1
    @morbusg: Sorry I forgot to add the option [n=1] in \startalignment, that is why the equations were not flush right. – Maggyero Sep 29 '14 at 12:08
2

You can do it by hand.

\starttext

\startplaceformula
  \startformula
        \rlap{\hskip6.5cm \Bigg\{}
        \startalignment[n=1,location=middle]
            \NC x = 1 \NR[+]
            \NC y = 1 \NR[+]
          \stopalignment
    \stopformula
\stopplaceformula

\stoptext

enter image description here

|improve this answer
  • On ConTeXt version 2016.05.19 (from TeX Live 2017), I get this: "tex error on line 8 in file /tmp/xr0jUK/texweb.tex: ! Improper \halign inside $$'s \math_both_eqalign_no_aligned ...fi \fi #1\halign \ifcase \eqalignmode \or t... l.8 \startalignment[n=1,location=middle]" – Maggyero Apr 15 '18 at 7:46
  • @Maggyero That's from TeX live 2016. My answer assumes that you are using the latest ConTeXt standalone. – Henri Menke Apr 15 '18 at 7:56

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