On Fri, 2 Jun 2006, Aditya Mahajan wrote:
> Hi,
> I am trying to write a macro so that
>
> \SEQ X[1,2,3] expands to $X_1, X_2, X_3$
> \SEQ X[1-N] expands to $X_1, \dots, X_N$
> and
> \SEQ X expands to ${\bf X}$.
>
> So far I have
On Fri, 2 Jun 2006, Taco Hoekwater wrote:
> It is much easier to treat the first element as special:
>
> \def\doSEQ[#1][#2]%
> {\ifsecondargument
> \donefalse
> \mathematics{\processcommalist[#2]{\dodoSEQ{#1}}}
> \else \mathematics{\bold{#1}}\fi}
>
> \def\dodoSEQ#1#2%
> {\ifdone ,\else \donetrue\fi#1_{#2}}
>
This is the final macro that I have, incase someone else is
interested.
\def\SEQ#1%
{\dodoubleempty\doSEQ[#1]}
\def\doSEQ[#1][#2]%
{\ifsecondargument
\donefalse
\mathematics{\processcommalist[#2]{\dodoSEQ{#1}}}
\else \mathematics{\bold{#1}}\fi}
\def\dodoSEQ#1#2%
{\ifdone ,\else \donetrue\fi
\doifelse{#2}{...}{\dots}{#1_{#2}}}
\starttext
\SEQ X[1,2] is part of \SEQ X[1,2,3,4] and \SEQ X[1,...,10]
\SEQ X[1,2,...,n-1,n,n+1,...,N]
\stoptext
Aditya
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