\gdef\mlastyle@brack##1{\ifx\NAT@date\mlastyle@notitle
\ifmlastyle@pages ##1\else\ifNAT@swa\ifnum
\NAT@ctype=0 ##1\else\unskip\fi\else\unskip\fi\fi\else ##1\fi}
\gdef\mlastyle@comma{\ifx\NAT@date\mlastyle@notitle\else,\fi}
\gdef\mlastyle@brack##1{\ifx\NAT@date\mlastyle@notitle
\ifmlastyle@pages ##1\else\ifNAT@swa\ifnum
\NAT@ctype=0 ##1\else\unskip\fi\else\unskip\fi\fi\else ##1\fi}
\gdef\mlastyle@comma{\ifx\NAT@date\mlastyle@notitle\else,\fi}