--- loncom/LONCAPA.pm	2011/07/04 09:25:53	1.32
+++ loncom/LONCAPA.pm	2019/08/25 02:43:33	1.36
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Base routines
 #
-# $Id: LONCAPA.pm,v 1.32 2011/07/04 09:25:53 foxr Exp $
+# $Id: LONCAPA.pm,v 1.36 2019/08/25 02:43:33 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -138,6 +138,30 @@ sub tempdir {
     return $result;
 }
 
+# Return the default engine to use to render content of <m></m> tags unless
+# a domain, course, or user specific value exists. 
+
+sub texengine {
+    return 'MathJax';
+}
+
+# Return the Linux distro where this LON-CAPA instance is running
+
+sub distro {
+    my $distro;
+    if (open(PIPE,"/home/httpd/perl/distprobe |")) {
+        $distro = <PIPE>;
+        close(PIPE);
+    }
+    return $distro;
+}
+
+# Return the default password length. Can be overridden in a domain
+# by specifying a larger value (integer) in the domain configuration.
+
+sub passwd_min {
+    return 7;
+}
 
 #----------------------------------------------------------------------
 #
@@ -175,6 +199,14 @@ sub unescape {
     return $str;
 }
 
+$LONCAPA::assess_re = qr{\.(problem|exam|quiz|assess|survey|form|library|task)$};
+$LONCAPA::assess_page_re = qr{\.(problem|exam|quiz|assess|survey|form|library|task|page)$};
+$LONCAPA::assess_page_seq_re = qr{\.(problem|exam|quiz|assess|survey|form|library|task|sequence|page)$};
+$LONCAPA::parse_re = qr{\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$};
+$LONCAPA::parse_page_re = qr{\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm|page)$};
+$LONCAPA::parse_page_sty_re = qr{\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm|page|sty)$};
+
+
 $match_domain     = $LONCAPA::domain_re     = qr{[[:alnum:]\-.]+};
 $match_not_domain = $LONCAPA::not_domain_re = qr{[^[:alnum:]\-.]+};
 sub clean_domain {