Page Layout ⇒ Changing leading causes header to shift right (in memoir)

[percep]

Hello

I've encountered a problem, which I think only occurs in the memoir class. If I define my own text size and leading as:

Code: Select all

\renewcommand{\normalsize}{%
\@setfontsize\normalsize{10pt}{12pt}....}

instead of

Code: Select all

\renewcommand{\normalsize\@xpt\@xiipt}{%
\@setfontsize\normalsize....}

(I want to use values other than 10pt/12pt, but this illustrates the problem), then the header moves to the right slightly so that the right-hand side crosses the margin. (This is quite noticeable in my page design, which has a rule at the bottom of the header.)

Minimal example:

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\documentclass{memoir}
\makeatletter
\renewcommand{\normalsize}{%
 \@setfontsize\normalsize\@xpt\@xiipt
%\@setfontsize\normalsize{10pt}{12pt}  
   \abovedisplayskip 3\p@
   \abovedisplayshortskip 1\p@
   \belowdisplayshortskip 1\p@
   \belowdisplayskip \abovedisplayskip
   \let\@listi\@listI}
\makeatother
\begin{document}
kdjf skldfjs dklfjsdklfjsdklfjsdklsdklfsj dfklsjfd klsjd sijgioeio gf siodjg klfdjgklfdgj klgjklgjdklg jdfklgj dfkgj dfklgj dklgj dkl dfkjs klfsjdsjd klfsjdf klsdjfskldjfskldfjsdlfjsdklfjsdklfsjdkl fsjdfklsdjfkl
\end{document}

Code: Select all

\documentclass{memoir}
\makeatletter
\renewcommand{\normalsize}{%
% \@setfontsize\normalsize\@xpt\@xiipt
\@setfontsize\normalsize{10pt}{12pt}  
   \abovedisplayskip 3\p@
   \abovedisplayshortskip 1\p@
   \belowdisplayshortskip 1\p@
   \belowdisplayskip \abovedisplayskip
   \let\@listi\@listI}
\makeatother
\begin{document}
kdjf skldfjs dklfjsdklfjsdklfjsdklsdklfsj dfklsjfd klsjd sijgioeio gf siodjg klfdjgklfdgj klgjklgjdklg jdfklgj dfkgj dfklgj dklgj dkl dfkjs klfsjdsjd klfsjdf klsdjfskldjfskldfjsdlfjsdklfjsdklfsjdkl fsjdfklsdjfkl
\end{document}

Compare the horizontal positions of the page number in the first and second examples.

This doesn't occur if I use book instead of memoir. I'm probably doing something stupid - is there a better way of redefining the text size and leading?

Thanks

Jonathan

[percep]

OK - solved..... I missed a % sign at the end of the line:
\@setfontsize\normalsize{10pt}{12pt}%