--- .\original\lang-def.mkiv	2020-07-23 23:03:23.382473600 +0400
+++ .\lang-def.mkiv	2020-08-02 21:04:48.389100700 +0400
@@ -256,6 +256,19 @@
    \c!date={\v!day,{.},\space,\v!month,\space,\v!year}]
 
 \installlanguage
+  [\s!sr]
+  [\c!spacing=\v!packed,
+   \c!leftsentence=\hbox{\endash\space},
+   \c!rightsentence=\hbox{\space\endash},
+   \c!leftsubsentence=\endash,
+   \c!rightsubsentence=\endash,
+   \c!leftquote=\upperrightsingleninequote,
+   \c!rightquote=\upperrightsingleninequote,
+   \c!leftquotation=\lowerleftdoubleninequote,
+   \c!rightquotation=\upperleftdoubleninequote,
+   \c!date={\v!day,{.},\space,\v!month,\space,\v!year}]
+
+\installlanguage
  [\s!sl]
  [\c!spacing=\v!packed,
   \c!leftsentence=\hbox{\endash\space},
@@ -272,6 +285,7 @@
 \installlanguage [\s!czech]     [\s!cs]
 \installlanguage [\s!slovak]    [\s!sk]
 \installlanguage [\s!croatian]  [\s!hr]
+\installlanguage [\s!serbian]   [\s!sr]
 \installlanguage [\s!slovenian] [\s!sl]
 \installlanguage [slovene]      [\s!sl] % both possible (mojca: still needed?)
 
