From 6a4fa401db3a45e0521cc0eae72f025be47d708c Mon Sep 17 00:00:00 2001
From: Henrik Tidefelt <henrikt@wolfram.com>
Date: Sun, 27 Dec 2020 01:35:05 +0100
Subject: [PATCH] Make sure our language definitions for listings are actually
 being used

While this wasn't a problem for our 'FORTRAN77', our definition of 'C' was actually completely ignored in favor of some predefined dialect of C.
---
 mlsshared.sty | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mlsshared.sty b/mlsshared.sty
index e3f9b1314..b33813bcd 100644
--- a/mlsshared.sty
+++ b/mlsshared.sty
@@ -99,7 +99,7 @@
 }[keywords,comments,strings]
 
 % Duplicate this definition here to avoid issue
-\lstdefinelanguage{FORTRAN77}{%
+\lstdefinelanguage{FORTRAN77}{% Define custom language to avoid collision with predefined [77]Fortran.
     basicstyle=\upshape\smallifpdf\ttfamily, % size of fonts used for the code
     morekeywords={%
         ASSIGN,BACKSPACE,CALL,CHARACTER,%
@@ -128,7 +128,7 @@
     morestring=[d]'
 }[keywords,comments,strings]
 
-\lstdefinelanguage{C}{%
+\lstdefinelanguage[MLS]{C}{% Define new dialect to avoid collision with predefined dialects of C.
     basicstyle=\upshape\smallifpdf\ttfamily, % size of fonts used for the code
     morekeywords={%
         auto,break,case,char,const,continue,default,do,double,%
@@ -165,6 +165,7 @@
   showstringspaces=false,
   frame=lrtb,
   belowskip=0pt,
+  defaultdialect=[MLS]C,
 }
 
 % Misc math