How to prevent word wrap and new lines in table cells?

Question

I have a xltabular table which is filled via script with data, so I don't really know what length the text has that is put into the table cells. Is there a function or method which can just cut off the text if it is too long to fit in one line? Here is the example of my table.

\documentclass[
fontsize=11pt,
parskip=half,
firstfoot=off,
foldmarks=off
]{scrlttr2}  
%
\usepackage[T1]{fontenc} 
\usepackage[ngerman]{babel} 
\usepackage{lmodern}
\usepackage{xltabular}
\usepackage[textwidth=\useplength{firstfootwidth}]{geometry} %showframe
\renewcommand*\familydefault{\sfdefault}
\begin{document}
%recipient

\begin{letter}{ 
Max Muste \
Teststraße 2    \
55555 Teststadt \
Schweiz         \ 
     }
% 
\opening{}
%
{\footnotesize
\begin{xltabular}{\textwidth}{@{\hskip0pt}r p{3.1cm} X r r r@{\hskip0pt}}
Menge & Artikelnummer & Bezeichnung & WHG & Einzelpreis & Gesamtpreis \ \hline 
\endfirsthead
Menge & Artikelnummer & Bezeichnung & WHG & Einzelpreis & Gesamtpreis \ \hline 
\endhead
\hline
\multicolumn{6}{l}{Bla}
\endlastfoot
1 & T-ERICSSON GF768 & Lötzinn bleifrei mit Silber- und Kupferanteil,Ø 1,0 mm, 12,5 g & 0 N & 12,77300 & 12,77\ *[\fill]
\end{xltabular}
}
\end{letter} 
\end{document} 

So basically mm, 12,5g should be thrown away, even if it is as text in the cell.

Answer 1

Well, there is not much sense to use an X column if you want to do that, an l ones will work ok, but one option is to use the truncate package (although you need a bit of gimmick to automatically apply it to a cell, here I use collcell package):

\documentclass[
fontsize=11pt,
parskip=half,
firstfoot=off,
foldmarks=off
]{scrlttr2}
%
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}
\usepackage{lmodern}
\usepackage{xltabular}
\usepackage[textwidth=\useplength{firstfootwidth}]{geometry} %showframe
\usepackage[fit, hyphenate]{truncate}
\usepackage{collcell}
\def\mytruncate{\truncate{6cm}}
\newcolumntype{T}{ >{\collectcell\mytruncate}X<{\endcollectcell} }
\renewcommand*\familydefault{\sfdefault}
\begin{document}
%recipient
\begin{letter}{
Max Muste \
Teststraße 2    \
55555 Teststadt \
Schweiz         \
     }
%
\opening{}
%
{\footnotesize
\begin{xltabular}{\textwidth}{@{\hskip0pt}r p{3.1cm} T r r r@{\hskip0pt}}
Menge & Artikelnummer & Bezeichnung & WHG & Einzelpreis & Gesamtpreis \ \hline
\endfirsthead
Menge & Artikelnummer & Bezeichnung & WHG & Einzelpreis & Gesamtpreis \ \hline
\endhead
\hline
\multicolumn{6}{l}{Bla}
\endlastfoot
1 & T-ERICSSON GF768 & Lötzinn bleifrei mit Silber- und Kupferanteil,Ø 1,0 mm, 12,5 g & 0 N & 12,77300 & 12,77\ *[\fill]
\end{xltabular}
}
\end{letter}
\end{document}