use \newcommand* instead of \newcommand for short macros

tex/crepbook.cls

@@ -450,35 +450,35 @@
 \fi%
 %% End of tabs.sty file
 
-\newcommand{\Intro}{%
+\newcommand*{\Intro}{%
   \IfStrEq{\@lang}{english}{intro}{}%
   \IfStrEq{\@lang}{french}{intro}{}%
 }%
-\newcommand{\Outro}{%
+\newcommand*{\Outro}{%
   \IfStrEq{\@lang}{english}{outro}{}%
   \IfStrEq{\@lang}{french}{outro}{}%
 }%
-\newcommand{\Bridge}{%
+\newcommand*{\Bridge}{%
   \IfStrEq{\@lang}{english}{bridge}{}%
   \IfStrEq{\@lang}{french}{pont}{}%
 }%
-\newcommand{\Chorus}{%
+\newcommand*{\Chorus}{%
   \IfStrEq{\@lang}{english}{chorus}{}%
   \IfStrEq{\@lang}{french}{refrain}{}%
 }%
-\newcommand{\Verse}{%
+\newcommand*{\Verse}{%
   \IfStrEq{\@lang}{english}{verse}{}%
   \IfStrEq{\@lang}{french}{couplet}{}%
 }%
-\newcommand{\Solo}{%
+\newcommand*{\Solo}{%
   \IfStrEq{\@lang}{english}{solo}{}%
   \IfStrEq{\@lang}{french}{solo}{}%
 }%
-\newcommand{\Pattern}{%
+\newcommand*{\Pattern}{%
   \IfStrEq{\@lang}{english}{pattern}{}%
   \IfStrEq{\@lang}{french}{motif}{}%
 }%
-\newcommand{\Rythm}{%
+\newcommand*{\Rythm}{%
   \IfStrEq{\@lang}{english}{rythm}{}%
   \IfStrEq{\@lang}{french}{rythme}{}%
 }%