[texhax] A problem about \jobname

[Rodolfo Medina]

Hi, all.

Suppose I'm editing 'myfile.tex'. If I say

\newtoks\filename
\filename={myfile}
\edef\tempa{\the\filename}
\edef\tempb{\jobname}
\ifx\tempa\tempb yes\else no\fi

I get 'no', whereas I would expect 'yes'. Instead, I get 'yes' if I say

\newtoks\filename
\filename={myfile}
\edef\tempa{\the\filename}
\edef\tempb{myfile}
\ifx\tempa\tempb yes\else no\fi

. Can anybody explain why I get 'no' in the first case 
and, above all, suggest a suitable code 
in order to correctly test if the value of \jobname, which is 'myfile',
is equal to the file name, which is 'myfile' as well,
such obtaining a 'yes'?

Thanks to anyone who will reply,
					Rodolfo