[Tex/LaTex] latexmk says fontspec/Path is unknown

errorsfontspeclatexmkpathsxetex

I have the following document, which uses fonts stored in a fonts/ directory (specifically several subdirectories of fonts/), as well as defined font subfamilies. I'm trying to compile it into a PDF using latexmk:

\documentclass[10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[margin=0.75in]{geometry}


\usepackage[colorlinks=true]{hyperref}
\usepackage{metalogo}

\usepackage{fontspec}
\setmainfont{FRABK.TTF}[
  ItalicFont = FRABKIT.TTF,
  BoldFont = FRAMD.TTF,
  BoldItalicFont = FRAMDIT.TTF,
  FontFace = {db}{n}{ Font = FRADM.TTF, Path = fonts/franklin-gothic/ },
  FontFace = {db}{i}{ Font = FRADMIT.TTF, Path = fonts/franklin-gothic/ },
  Path = fonts/franklin-gothic/
]
\setsansfont{CGOR45W.TTF}[
  ItalicFont=CGOR46W.TTF,
  BoldFont=CGOR65W.TTF,
  BoldItalicFont=CGOR66W.TTF,
  Path = fonts/cg-omega/
]
\setmonofont{CONSOLA.TTF}[
  ItalicFont=CONSOLAI.TTF,
  BoldFont=CONSOLAB.TTF,
  BoldItalicFont=CONSOLAZ.TTF,
  Path = fonts/consolas/
]
\newcommand{\lmr}{\fontfamily{lmr}\selectfont} % Latin Modern Roman
\newcommand{\lmss}{\fontfamily{lmss}\selectfont} % Latin Modern Sans
\newcommand{\lmtt}{\fontfamily{lmtt}\selectfont} % Latin Modern Mono


\begin{document}


\section{Foo}
\fontseries{db}\selectfont
Demibold text \\
\normalfont
\textbf{Medium text} \\
Normal text


\noindent
  \hrulefill \par
\noindent
  \hypersetup{linkcolor=gray}
  \small
  \url{http://www.example.org/} \hfill \textbf{Date}


\end{document}

Since I'm using fontspec, this would require xelatex. However, when I run latexmk -pdf -xelatex main.tex, I receive:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! LaTeX error: "kernel/key-unknown"
!
! The key 'fontspec/Path' is unknown and is being ignored.
!
! See the LaTeX3 documentation for further information.
!
! For immediate help type H <return>.
!...............................................

l.17 ]

? h
|'''''''''''''''''''''''''''''''''''''''''''''''
| The module 'fontspec' does not have a key called fontspec/Path'.
| Check that you have spelled the key name correctly.
|...............................................

Why is fontspec/Path unknown, and how can I get it to be recognized? Is my latexmk invocation incorrect, perhaps causing it not to use xelatex at a time when it should?

More generally, could this be alleviated by better methods of organizing the font definitions or how the document is compiled?

Best Answer

Per Will Robertson's comment, actually, fontspec can find the font; it just doesn't need to be told the location twice. Applying the following diff got rid of the error:

-       FontFace = {db}{n}{ Font = FRADM.TTF, Path = fonts/franklin-gothic/ },
-       FontFace = {db}{i}{ Font = FRADMIT.TTF, Path = fonts/franklin-gothic/ }
+       FontFace = {db}{n}{ Font = FRADM.TTF },
+       FontFace = {db}{i}{ Font = FRADMIT.TTF }

Full example

\documentclass[10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[margin=0.75in]{geometry}


\usepackage[colorlinks=true]{hyperref}
\usepackage{metalogo}

\usepackage{fontspec}
\setmainfont{FRABK.TTF}[
  ItalicFont = FRABKIT.TTF,
  BoldFont = FRAMD.TTF,
  BoldItalicFont = FRAMDIT.TTF,
  FontFace = {db}{n}{ Font = FRADM.TTF },
  FontFace = {db}{i}{ Font = FRADMIT.TTF },
  Path = fonts/franklin-gothic/
]
\setsansfont{CGOR45W.TTF}[
  ItalicFont=CGOR46W.TTF,
  BoldFont=CGOR65W.TTF,
  BoldItalicFont=CGOR66W.TTF,
  Path = fonts/cg-omega/
]
\setmonofont{CONSOLA.TTF}[
  ItalicFont=CONSOLAI.TTF,
  BoldFont=CONSOLAB.TTF,
  BoldItalicFont=CONSOLAZ.TTF,
  Path = fonts/consolas/
]
\newcommand{\lmr}{\fontfamily{lmr}\selectfont} % Latin Modern Roman
\newcommand{\lmss}{\fontfamily{lmss}\selectfont} % Latin Modern Sans
\newcommand{\lmtt}{\fontfamily{lmtt}\selectfont} % Latin Modern Mono


\begin{document}


\section{Foo}
\fontseries{db}\selectfont
Demibold text \\
\normalfont
\textbf{Medium text} \\
Normal text


\noindent
  \hrulefill \par
\noindent
  \hypersetup{linkcolor=gray}
  \small
  \url{http://www.example.org/} \hfill \textbf{Date}


\end{document}

Expected output

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