[MiKTeX] Protecting a hyphen in a \newcommand line

[Christoph H. <chr...@ar...>]

Dear MikTeX users,

how can I protect a hyphen when using it in a \newcommand line?

For example:

\newcommand{\gdpm}   {GDP"~Man\xspace}

When using the command \gdpm in the text, I get something like GDP" Man in
my printout.

However, when using GDP"~Man in the text, the hyphen is displayed in a
correct manner and is also protected against hyphenation.

Any idea how to modify the \newcommand line to avoid this?

Thank you in advance!

Regards,
Christoph