"IfLanguageName" ist robuster

antragsbestaetigung/ptb-confirm.cls

@@ -3,7 +3,7 @@
 \setcounter{errorcontextlines}{100}  \listfiles
 
 \NeedsTeXFormat{LaTeX2e}[1999/12/01]
-\ProvidesClass{ptb-confirm}[2018/11/05 v0.2f Bestaetigung (RN)]
+\ProvidesClass{ptb-confirm}[2018/11/09 v0.2g Bestaetigung (RN)]
 
 \RequirePackage{eso-pic,graphicx,xcolor,tabularx,trimspaces,amsmath}
 
@@ -88,7 +88,7 @@
     \vl@Zipcode\ \vl@Town
     \ifx\vl@Land\@empty\else ~\smallskip \\ \textls[75]{\MakeUppercase{\vl@Land}} \fi
   }
-    \iflanguage{ngerman}{%
+    \IfLanguageName{ngerman}{%
       %\sisetup{locale=DE}
       \subject{Antragsbestätigung~\usekomavar{myref}}%
       \input{ptb-confirm-de.lco}%

ptbletter/ptbletter.cls

@@ -3,7 +3,7 @@
 \setcounter{errorcontextlines}{100}  \listfiles
 
 \NeedsTeXFormat{LaTeX2e}[1999/12/01]
-\ProvidesClass{ptbletter}[2018/06/14 v0.3c PTB-Brief-Klasse (RN)]
+\ProvidesClass{ptbletter}[2018/11/09 v0.3d PTB-Brief-Klasse (RN)]
 
 \let\ptb@tempdima=\@ovxx
 \let\ptb@tempdimb=\@ovyy
@@ -212,10 +212,10 @@
   \parbox{\useplength{firstfootwidth}}{%
     \sffamily\tiny
     \begin{tabular}{@{}l@{}}
-      \iflanguage{ngerman}{Hausadresse, Lieferanschrift:}{Domicile:} \\
+      \IfLanguageName{ngerman}{Hausadresse, Lieferanschrift:}{Domicile:} \\
       \ifptb@BLN Abbestr. 2--12 \else Bundesallee 100 \fi \\
       \ifptb@BLN 10587 Berlin \else 38116 Braunschweig\fi \\
-      \iflanguage{ngerman}{DEUTSCHLAND}{GERMANY} \\
+      \IfLanguageName{ngerman}{DEUTSCHLAND}{GERMANY} \\
     \end{tabular}%
     \hfill
     \begin{tabular}{@{}l@{~}l@{}}
@@ -236,7 +236,7 @@
       \ifptb@BLN PTB Braunschweig \else PTB Berlin-Charlottenburg \fi \\
       \ifptb@BLN Bundesallee 100 \else Abbestr. 2--12 \fi \\
       \ifptb@BLN 38116 Braunschweig \else 10587 Berlin \fi \\
-      \iflanguage{ngerman}{DEUTSCHLAND}{GERMANY}
+      \IfLanguageName{ngerman}{DEUTSCHLAND}{GERMANY}
     \end{tabular}%
     \hfill \mbox{}
   }%
@@ -325,7 +325,7 @@
 \setlist{leftmargin=*,nosep,topsep=.5em,itemsep=.25em}
 \setlist[1]{labelindent=1em}
 
-\iflanguage{ngerman}{%
+\IfLanguageName{ngerman}{%
   \newcommand*\MFG{Mit freundlichen Gr\"u\ss en}
   \newcommand*\MFg{Mit freundlichem Gru\ss}
   \newcommand*\MHG{Mit herzlichen Gr\"u\ss en}