[latexrefman] jobname

[Vincent Belaïche]

Just to say that I have done the simple experiment to redefine
\jobname as \def\jobname{\errmessage{something}}, and in a plain
document it fails on the \begin{document}, because this does some
\@input[\jobname.aux}.

So my conclusion is that \documentclass does not expand \jobname. And
therefore I fail to understand how the engine gets that jobname is
texput when the command line arguments begin with a \documentclass{…}

Le sam. 14 août 2021 à 13:57, Vincent Belaïche
<vincent.belaiche at gmail.com> a écrit :
>
> Sorry Jim,  the French for kernel is noyau, not noyeau, I just mispelled it.
>   V.
>
> Le sam. 14 août 2021 à 13:52, Vincent Belaïche
> <vincent.belaiche at gmail.com> a écrit :
> >
> > Please have a look at this
> > :https://groups.google.com/g/comp.text.tex/c/h-SKJ3gN56U
> >
> > I think that \documentclass and \RequirePackage freeze the \jobname by
> > expanding it, and that is why the jobname is texput in command lines
> > such as « pdflatex '\documentclass{article}\input' 'body' ». However,
> > I have not confirmed yet this assumption by looking at their
> > definitions in the kernel source code.
> > I reworked however the jobname node, as attached.
> >
> > Jim this is again some translation work for you.  Notably
> > * \jobname is not a macro, it is a primitive, and this has some consequences,
> > * I pushed all the gory details to the end of node for the sake of
> > progressivity into this matter
> > * below I prepared some French/English glossary to help you
> >
> > - figer.= to freeze
> > - dérouter = to confuse/puzzle
> > - développer = to expand
> > - guillemets anglais = quote
> > - autonome = on its own
> > - invite = prompt
> > - noyeau = kernel
> > - journal = log
> > - ouvrage = job
> > - en sous-main = under the hood
> >
> >
> > Le sam. 14 août 2021 à 00:12, Karl Berry <karl at freefriends.org> a écrit :
> > >
> > >     pdflatex '\documentclass{article}\usepackage{lipsum}\input titi'
> > >
> > >     and the jobname was named texput, not titi.
> > >
> > > The jobname for such LaTeX input was never "titi". As of TL 2020, it's
> > > "texput"; before that, it was "article". As would be expected. -k
> > >