[texhax] Why pdftex in dvi mode and in pdf mode works differently?

[Philip Taylor]

It is not a feature of PdfTeX, Igor, nor is it related to whether or not DVI/PDF output is selected -- exactly the same behaviour is manifested by the following, independent of engine, etc.

\iffalse

     \def \a #1#2{\myif #1\else #2\fi}

\fi

\end

-- 

Philip Taylor
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