On Mon, 4 Dec 2006, Hubertus Schmidt wrote:
> Hi all,
> for some weeks I need to tex formulas again and tried the way I used to do it:
>
> \placeformula
> $$
> f(t)={1\over2\pi}\int_0^\infty e^{i(\omega t-kx)} dx
> $$
>
> It didn't work anymore?!? It doesn't place a number nor does it do the spacing
> properly. It does work the "context" way using
>
> \placeformula
> \startformula
> f(t)={1\over2\pi}\int_0^\infty e^{i(\omega t-kx)} dx
> \stopformula
This is a bug in doplaceformula. I do not know how to avoid it, but
the next code illustrates what is happening.
\def\dotest{
\def\nextnext{$}%
\ifx\next\nextnext
Inside dispplaceformula\ldots % This always fails
\else
Inside dodoplaceformula\ldots
\fi}
\def\test{\futurelet\next\dotest}
\test$$A = B$$
This prints "Inside dodoplaceformula" even though the next character
is \$.
So, the \next=\nextnext branch never matches. I do not know why this
happens, but a more robust check is needed in doplaceformula.
Aditya
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