아래와 같은 스타일 파일을 만들어서 XeLaTeX과 LuaLaTeX에서 돌려봤는데 에러가 납니다.

뭔가 제가 잘못한 게 있는지...

\NeedsTeXFormat{LaTeX2e}

\ProvidesPackage{nanumfonts}

\RequirePackage{kotex}

\RequirePackage{ifluatex}

\RequirePackage{ifxetex}

\newif\if@otf

\newif\if@barun

\DeclareOption{otf}{\@otftrue}

\DeclareOption{barun}{\@baruntrue}

\ProcessOptions\relax

% define font families.

\if@otf

\newhangulfontface\nnMJ[ItalicFont=NanumMyeongjoOTF, ItalicFeatures={FakeSlant={.17}}]{NanumMyeongjoOTF}

\newhangulfontface\nnMJb[ItalicFont=NanumMyeongjoBoldOTF, ItalicFeatures={FakeSlant={.17}}]{NanumMyeongjoBoldOTF}

\newhangulfontface\nnMJeb[ItalicFont=NanumMyeongjoExtraBoldOTF, ItalicFeatures={FakeSlant={.17}}]{NanumMyeongjoExtraBoldOTF}

\newhangulfontface\nnGT[ItalicFont=NanumGothicOTF, ItalicFeatures={FakeSlant={.17}}]{NanumGothicOTF}

\newhangulfontface\nnGTb[ItalicFont=NanumGothicBoldOTF, ItalicFeatures={FakeSlant={.17}}]{NanumGothicBoldOTF}

\newhangulfontface\nnGTeb[ItalicFont=NanumGothicExtraBoldOTF, ItalicFeatures={FakeSlant={.17}}]{NanumGothicExtraBoldOTF}

\newhangulfontface\nnBGT[ItalicFont=NanumBarunGothicOTF, ItalicFeatures={FakeSlant={.17}}]{NanumBarunGothicOTF}

\newhangulfontface\nnBGTb[ItalicFont=NanumBarunGothicBoldOTF, ItalicFeatures={FakeSlant={.17}}]{NanumBarunGothicBoldOTF}

\else

\newhangulfontface\nnMJ[ItalicFont=NanumMyeongjo, ItalicFeatures={FakeSlant={.17}}]{NanumMyeongjo}

\newhangulfontface\nnMJb[ItalicFont=NanumMyeongjoBold, ItalicFeatures={FakeSlant={.17}}]{NanumMyeongjoBold}

\newhangulfontface\nnMJeb[ItalicFont=NanumMyeongjoExtraBold, ItalicFeatures={FakeSlant={.17}}]{NanumMyeongjoExtraBold}

\newhangulfontface\nnGT[ItalicFont=NanumGothic, ItalicFeatures={FakeSlant={.17}}]{NanumGothic}

\newhangulfontface\nnGTb[ItalicFont=NanumGothicBold, ItalicFeatures={FakeSlant={.17}}]{NanumGothicBold}

\newhangulfontface\nnGTeb[ItalicFont=NanumGothicExtraBold, ItalicFeatures={FakeSlant={.17}}]{NanumGothicExtraBold}

\newhangulfontface\nnBGT[ItalicFont=NanumBarunGothic, ItalicFeatures={FakeSlant={.17}}]{NanumBarunGothic}

\newhangulfontface\nnBGTb[ItalicFont=NanumBarunGothicBold, ItalicFeatures={FakeSlant={.17}}]{NanumBarunGothicBold}

\fi

\setmainhangulfont\nnMJ

\if@barun

\setsanshangulfont\nnGT

\else

\setsanshangulfont\nnBGT

\fi

결과는

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!

! LaTeX error: "kernel/space-in-file-name"

!

! Space in file name '\nnMJ .fontspec'.

!

! See the LaTeX3 documentation for further information.

!

! For immediate help type H <return>.

!...............................................

l.36 \setmainhangulfont\nnMJ