Re: [NTG-context] unusual behaviour of \if(x)

Dear magitians,

I discovered this in LaTeX, but ConTeXt behaves the same (plain TeX behaves differently). Can somebody please explain me why this code fails to work? (A workaround is to move \newif on top which I'm willing to do, but I'm still curious.)

\starttext

\ifx\hbox\undefined  \message{invisible to tex}  \newif\ifabc \abcfalse  \ifabc \message{abc true breaks} \else \message{abc false breaks} \fi \fi

\stoptext (see wolfgang)

On Wed, Jun 1, 2011 at 3:26 PM, Mojca Miklavec wrote: this works \newif\ifabc \starttext \ifx\dhbox\undefined \message{dhbox invisible to tex} \abcfalse \ifabc \message{abc true breaks} \else \message{abc false breaks} \fi \fi \ifx\hbox\undefined \message{hbox invisible to tex} \abcfalse \ifabc \message{abc true breaks} \else \message{abc false breaks} \fi \fi \stoptext -- luigi