Font size of linguistic examples (langsci-gb4e)

Question

I need to format my thesis in linguistics as required by the publisher. The font has to be Times New Roman 10,2°, spacing 11,9°. While this works for the main text, I cannot change the font size of the examples using langsci-gb4e package strong text.

Here is a MWE

\documentclass[twoside, 10.2pt, listof=nochaptergap]{scrbook}

% language packages
\usepackage[T2A,T1,T3]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[russian,ngerman]{babel}
\usepackage[]{textgreek}

%some more packages

% layout
\usepackage[paperwidth=17cm, paperheight=24cm, %seitengrösse
outer=2.7cm, inner=2.4cm, top=2.5cm,bottom=2.5cm, %seitenränder
headsep=0.62cm]{geometry} %abstand von kopfzeile zu text
\setlength{\textheight}{19cm}
\setlength{\textwidth}{11.9cm} %satzspiegel definieren

\usepackage{fontspec}
\setmainfont{Times New Roman}

\AtBeginDocument{\fontsize{10.2}{11.9}\selectfont}
\setlength\parindent{6mm}

%some more formatting of bibliography, captions, etc.

% examples
\usepackage{langsci-gb4e}
\renewcommand{\exfont}{\fontsize{10.2}{11.9}\selectfont\itshape} 
\renewcommand{\glossfont}{\fontsize{10.2}{11.9}\selectfont}
\renewcommand{\transfont}{\normalfont\fontsize{10.2}{11.9}\selectfont}
\renewcommand{\exnrfont}{\normalfont\fontsize{10.2}{11.9}\selectfont}

\usepackage{blindtext}

\begin{document}

\blindtext

\begin{exe}
\ex\label{ex:specificlabel}
\gll es hungrigs ross\\
a.\textsc{nom/acc.neutr} hungry.\textsc{nom/acc.neutr} horse \\
\trans `a hungry horse'
\end{exe}

\blindtext

\end{document}

It does not matter whether I use

\renewcommand{\exfont}{\fontsize{10.2}{11.9}\selectfont\itshape} 

or

\newcommand{\exfont}{\fontsize{10.2}{11.9}\selectfont\itshape} 

I have also tried using \eachwordone instead of \exfont as shown here. This works for the first line (example) and the second (glossing), but not the third one (translation) or the number.

\documentclass[twoside, 10.2pt, listof=nochaptergap]{scrbook}

% language packages
\usepackage[T2A,T1,T3]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[russian,ngerman]{babel}
\usepackage[]{textgreek}

% some more packages

% layout
\usepackage[paperwidth=17cm, paperheight=24cm, %seitengrösse
outer=2.7cm, inner=2.4cm, top=2.5cm,bottom=2.5cm, %seitenränder
headsep=0.62cm]{geometry} %abstand von kopfzeile zu text
\setlength{\textheight}{19cm}
\setlength{\textwidth}{11.9cm} %satzspiegel definieren

\usepackage{fontspec}
\setmainfont{Times New Roman}

\AtBeginDocument{\fontsize{10.2}{11.9}\selectfont}
\setlength\parindent{6mm}

% some more formatting of bibliography, captions, etc.

% examples
\usepackage{langsci-gb4e}
\renewcommand{\eachwordone}{\fontsize{10.2}{11.9}\selectfont\itshape} 
\renewcommand{\eachwordtwo}{\fontsize{10.2}{11.9}\selectfont}
\renewcommand{\eachwordthree}{\normalfont\fontsize{10.2}{11.9}\selectfont}
\renewcommand{\exnrfont}{\normalfont\fontsize{10.2}{11.9}\selectfont}

\usepackage{blindtext}

\begin{document}

\blindtext

\begin{exe}
\ex\label{ex:specificlabel}
\gll es hungrigs ross\\
a.\textsc{nom/acc.neutr} hungry.\textsc{nom/acc.neutr} horse \\
\trans `a hungry horse'
\end{exe}

\blindtext

\end{document}

I have also tried not using the exe enviroment as suggested in the manual of the langsci-gb4e package which also does not help.

\documentclass[twoside, 10.2pt, listof=nochaptergap]{scrbook}

% language packages
\usepackage[T2A,T1,T3]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[russian,ngerman]{babel}
\usepackage[]{textgreek}

% some more packages

% layout
\usepackage[paperwidth=17cm, paperheight=24cm, %seitengrösse
outer=2.7cm, inner=2.4cm, top=2.5cm,bottom=2.5cm, %seitenränder
headsep=0.62cm]{geometry} %abstand von kopfzeile zu text
\setlength{\textheight}{19cm}
\setlength{\textwidth}{11.9cm} %satzspiegel definieren

\usepackage{fontspec}
\setmainfont{Times New Roman}

\AtBeginDocument{\fontsize{10.2}{11.9}\selectfont}
\setlength\parindent{6mm}

% some more formatting of bibliography, captions, etc.

% examples
\usepackage{langsci-gb4e}
\renewcommand{\eachwordone}{\fontsize{10.2}{11.9}\selectfont\itshape} 
\renewcommand{\eachwordtwo}{\fontsize{10.2}{11.9}\selectfont}
\renewcommand{\eachwordthree}{\normalfont\fontsize{10.2}{11.9}\selectfont}
\renewcommand{\exnrfont}{\normalfont\fontsize{10.2}{11.9}\selectfont}

\usepackage{blindtext}

\begin{document}

\blindtext

\ea
\label{ex:specificlabel}
\gll es hungrigs ross\\
a.\textsc{nom/acc.neutr} hungry.\textsc{nom/acc.neutr} horse \\
\glt `a hungry horse'
\z

\blindtext

\end{document}

Does anyone have any idea how to solve this? Every help is very much appreciated.

Answer 1

The problem is that you're loading fontenc with old encodings. You should not do this, because you are using fontspec and are compiling with XeLaTeX or LuaLaTeX. But you need to set up your fonts properly for Russian. You should also not be loading the textgreek package, but instead set up Greek properly with babel. See the babel documentation for how to do that.

A global font change like the one you've added using \AtBeginDocument is also not a good idea. Since you're using the KOMA class scrbook, your fontsize=10.2pt should be all you need.

Then you don't need to do any redefinitions of the gb4e macros other than making \eachwordone to be \itshape.

Then your file compiles, but the Times New Roman font doesn't have small caps (at least the one I have doesn't) so your glossing abbreviations end up being substituted. This means you need a font that has proper small caps.

\documentclass[twoside, 10.2pt, listof=nochaptergap]{scrbook}

% language packages

\usepackage[russian,ngerman]{babel}

% some more packages

% layout
\usepackage[paperwidth=17cm, paperheight=24cm, %seitengrösse
outer=2.7cm, inner=2.4cm, top=2.5cm,bottom=2.5cm, %seitenränder
headsep=0.62cm]{geometry} %abstand von kopfzeile zu text
\setlength{\textheight}{19cm}
\setlength{\textwidth}{11.9cm} %satzspiegel definieren

\usepackage{fontspec}
\setmainfont{Times New Roman}

\setlength\parindent{6mm}

% some more formatting of bibliography, captions, etc.

% examples
\usepackage{langsci-gb4e}
\renewcommand{\eachwordone}{\itshape} 

\usepackage{blindtext}

\begin{document}

\blindtext

\begin{exe}
\ex\label{ex:specificlabel}
\gll es hungrigs ross\\
a.\textsc{nom/acc.neutr} hungry.\textsc{nom/acc.neutr} horse \\
\trans `a hungry horse'
\end{exe}

\blindtext

\end{document}