[tex-eplain] Error

Philip Taylor P.Taylor at Rhul.Ac.Uk
Mon Jul 4 08:40:05 CEST 2016

Philip Taylor wrote:
> OK, let's stick to things we have in common -- PdfTeX.  This code yields "no" for me when run on the first pass, and "yes" for me when run on the second and subsequent passes :
And here is the same code for Knuthian TeX (tested only against PdfTeX -- I don't have Knuthian TeX easily available here) -- it yields identical results, for me at least.

\input eplain

\def \refn #1%
        \ifx \csname \xrlabel {#1}\endcsname \relax
            {\tt #1}%
            \csname \xrlabel {#1}\endcsname

\definexref {label} {\jobname} {}

\def \xrefn #1%
        \edef \tempa {\refn {#1}}
        \edef \tempa {\meaning \tempa}

\xrefn {label}

\edef \tempb {\jobname}
\edef \tempb {\meaning \tempb}

\ifx \tempa \tempb
    \message {Yes}
    \message {No: \tempa \tempb}



Philip Taylor
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