3

I would like to create a macro \myjob that has the same value as \jobname, but with letters having catcode 11 instead of 12. The goal is to be able to do something like

\documentclass{article}
\edef\myjob{\jobname}
\makeatletter
\newcommand{\mytest}[1]{\begingroup%
  \def\@tempa{#1}%
%  \expandafter\def\expandafter\@tempa\expandafter{\detokenize{#1}}%
  \meaning\@tempa\par%
  \meaning\myjob\par%
  \ifx\@tempa\myjob%
    YES%
  \else%
    NO%
  \fi%
\endgroup}
\begin{document}
\mytest{test}
\end{document}

where \ifx\@tempa\myjob is true (assuming the correct string is passed to \mytest). I would prefer not to detokenize the input string. Rather, I am looking for a different way of defining \myjob that "retokenizes" \jobname.

3
  • 2
    'Retokenizing' is risky as there might be a % or similar: see e-TeX's \scantokens
    – Joseph Wright
    Oct 19, 2016 at 14:44
  • 1
    @JosephWright if a user is silly enough to put % or other nonsense in the \jobname then I am fine with it causing problems.
    – StrongBad
    Oct 19, 2016 at 14:48
  • The detokenizing of \@tempa contents is much more safer. It can be done by a simple \@onelevel@sanitize\@tempa, which does not even require e-TeX. The tokenization method via \scantokens is not reliable at all. Depending on the current category code settings and the used characters, the latter method can break with a cryptic error message; also, the result is not even stable in general. Oct 19, 2016 at 21:00

1 Answer 1

3

Thanks to the hint from Joseph Wright, all I need is \scantokens.

\documentclass{article}

\edef\myjob{\expandafter\scantokens\expandafter{\jobname\noexpand}}
\makeatletter
\newcommand{\mytest}[1]{\begingroup%
  \def\@tempa{#1}%
%  \expandafter\def\expandafter\@tempa\expandafter{\detokenize{#1}}%
  \meaning\@tempa\par%
  \meaning\myjob\par%
  \ifx\@tempa\myjob%
    YES%
  \else%
    NO%
  \fi%
\endgroup}

\begin{document}

\mytest{test}

\end{document}

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.