only create RegExp when needed on string/escapeRegExp
only create RegExp when needed on string/escapeRegExp

mout/mout,mout/mout,ChristianGrete/mout,ChristianGrete/mout,Oyamasiphula/mout,Oyamasiphula/mout,stevemao/mout,MathiasPaumgarten/mout,stevemao/mout,MathiasPaumgarten/mout