KOMA footnotes and epltxfn.sty

Question

I am trying to use my own style for footnotes defined with scrartcl together with the footnote-specific example labeling (i) for expex provided by epltxfn. However, whichever of the two footnote definitions is written last seems to overwrite the other completely, as in this MWE:

\documentclass{scrartcl}

\deffootnote{2em}{1em}{\thesection.\thefootnotemark.\enskip}
\usepackage{expex,epltxfn}
 
\begin{document}
    \section{A Section}
    Some text and        
    \ex a normal example\xe
    Some more text\footnote{And here \ex an example inside a footnote\xe}
\end{document}

Is there a way to resolve this conflict?

Answer 1

In the expex documentation, the (very short) code of epltxfn is explained in a way that makes it very easy to create a version of it using your own footnote style. Or you could misappropriate the addtokomafont macro to add only the renumbering part of epltxfn to every footnote, like so:

\documentclass{scrartcl}

\deffootnote{2em}{1em}{\thesection.\thefootnotemark.\enskip}
\usepackage{expex}

\newcommand{\evryftnt}{\keepexcntlocal\excnt=1%
    \lingset{exskip=1ex,exnotype=roman,sampleexno=,%
    labeltype=alpha,labelanchor=numright,numoffset=2em,labeloffset=.5em,textoffset=.5em}}
\addtokomafont{footnote}{\evryftnt}

\begin{document}
    \section{A Section}
    Some text and
    \ex a normal example\xe
    Some more text\footnote{And here \ex an example inside a footnote\xe}
\end{document}

with an added numoffset to match the indent of your footnotes.