[tex-eplain] \optionalarg delimitation

Rodolfo Medina rodolfo.medina at gmail.com
Fri May 15 14:11:20 CEST 2009

How can I delimit an \@optionalarg?  E.g., suppose I want a space after it.  In
the following example:

\input /home/rodolfo/macros/eplain-3.2


  \ifx\@optionalarg\empty Hallo!
  \else Hallo, \@optionalarg!



, if I don't delimit the \@optionalarg with a space after it, an extra
undesired horizontal glue is added between `Mary!' and `John'.

Help very welcome.


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