+\newcommand{\@ptsize}{0}
+\ifdim\ltjs@mpt=1.0954\p@ \renewcommand{\@ptsize}{1}\else
+\ifdim\ltjs@mpt=1.2\p@ \renewcommand{\@ptsize}{2}\else
+\renewcommand{\@ptsize}{-20}\fi\fi
+\if@ltjs@mag@xreal\RequirePackage{type1cm}
+\ifdim\ltjs@mpt=\p@\else
+ \expandafter\let\csname OT1/cmr/m/n/10\endcsname\relax
+ \expandafter\let\csname OMX/cmex/m/n/10\endcsname\relax
+ \newluafunction\ltjs@@magnify@font@calc
+ \begingroup\catcode`\%=12\relax
+ \directlua{
+ local getdimen, mpt=tex.getdimen, tex.getdimen('ltjs@mpt')/65536
+ local t = lua.get_functions_table()
+ t[\the\ltjs@@magnify@font@calc] = function()
+ tex.sprint(math.floor(0.5+mpt*getdimen('dimen@')))
+ end
+ function luatexja.ltjs_unmagnify_fsize(a)
+ local s = luatexja.print_scaled(math.floor(0.5+a/mpt*65536))
+ tex.sprint( (s:match('%.0$')) and s:sub(1,-3) or s )
+ end
+ }
+ \endgroup
+ \def\ltjs@magnify@external@font#1 at#2 at#3\@nil{%
+ \def\@tempa{#1}\def\@tempb{#2}%
+ \ifx\@tempb\@empty
+ \edef\@tempb{ scaled\directlua{%
+ tex.sprint(math.floor(0.5+\ltjs@magscale*1000))
+ }}%
+ \else
+ \dimen@\@tempb\relax
+ \edef\@tempb{ at\luafunction\ltjs@@magnify@font@calc sp}%
+ \fi
+ \edef\@tempa{\def\noexpand\external@font{\@tempa\@tempb}}
+ }
+ \let\ltjs@orig@get@external@font=\get@external@font
+ \def\get@external@font{%
+ \edef\f@size{\directlua{luatexja.ltjs_unmagnify_fsize(\f@size)}}%
+ \ltjs@orig@get@external@font
+ \begingroup
+ \edef\@tempa{\external@font\space at\space at}%
+ \expandafter\ltjs@magnify@external@font\@tempa\@nil
+ \expandafter\endgroup\@tempa
+ }
+\fi\fi