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Date:         Wed, 11 May 2011 21:39:33 +0200
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From: Arno Trautmann <Arno.Trautmann@GMX.DE>
Subject: Re: compare string with \c_job_name_tl
To: LATEX-L@listserv.uni-heidelberg.de
In-Reply-To:  <4DCAE0D9.8@morningstar2.co.uk>
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Joseph Wright wrote:
> On 11/05/2011 20:03, Arno Trautmann wrote:
>> Hi all,
>>
>> sorry for this rather trivial question, but at the moment it's driving=

>> me crazy =85
>> I just want to execute some code depending on the jobname. I found a
>> solition by Donald Arsenau=B9 that looks rather lengthy. So, I thought=

>> with LaTeX3, everything is easier. Now I tried this:
>>
>> \documentclass{minimal}
>> \usepackage{expl3}
>> \begin{document}
>> \ExplSyntaxOn
>> \tl_set:Nn\myjob{a}
>> \tl_set:Nx\myjobii{\tl_to_str:N\myjob}
>> \tl_if_eq:NNTF\myjobii\jobname{true}{false}
>> \ExplSyntaxOff
>> \end{document}
>>
>> because, based on Donald's post, I assumed that I need to have an =93a=
=94
>> with catcode =93other=94 for a successfull test.
>>
>> Now, calling
>> lualatex --jobname=3Da test.tex
>> always prints =93false=94. So =96 what is my mistake here and what wou=
ld be
>> the easiest way for such a test using expl3?
>>
>> cheers
>> Arno
>=20
> The \jobname primitive is not a token list variable, so this test won't=

> work: you want \c_job_name_tl.

Yes, I tried that, too, but it didn't work =85 but thanks.

> However, I'd use the \str_if_eq:xxTF test
> here, as you want a string comparison
>=20
> \documentclass{minimal}
> \usepackage{expl3}
> \begin{document}
> \ExplSyntaxOn
> \str_if_eq:nnTF{a}{\c_job_name_tl}{true}{false}
> \ExplSyntaxOff
> \end{document}
>=20
> (This will work with \jobname as well, but the 'official' interface to
> that in LaTeX3 is \c_job_name_tl.)

Your example fails, but the :no variant works in this case.
However, I seem not to get it working for comparing a command to the
jobname =96 what do I have to do to say

\str_if_eq:nnTF{\myjobname}{\c_job_name_tl}{true}{false}

I tried to use \tl_to_str in the argument of a \str_if_eq:ooTF, but that
still results in false.

cheers
Arno


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