Adding the xml:lang tag to XML and Docbook output

Adding the xml:lang attribute for XNL and Docbook output

Interesting links:
- language codes (different from country codes!): https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
- example for xml.xsd: http://www.java2s.com/Code/XML/XML-Schema/importanotherXMLschema.htm

45 files changed, 349 insertions, 8 deletions

diff --git a/src/docbookgen.cpp b/src/docbookgen.cpp
index 53b2957..e5c9a6b 100644
--- a/src/docbookgen.cpp
+++ b/src/docbookgen.cpp
@@ -320,6 +320,7 @@ DB_GEN_C
   t << "<?xml version='1.0' encoding='UTF-8' standalone='no'?>" << endl;;
   t << "<" << fileType << " xmlns=\"http://docbook.org/ns/docbook\" version=\"5.0\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"";
   if (!pageName.isEmpty()) t << " xml:id=\"_" <<  stripPath(pageName) << "\"";
+  t << " xml:lang=\"" << theTranslator->trISOLang() << "\"";
   t << ">" << endl;
 }
 
diff --git a/src/translator.h b/src/translator.h
index 188b775..8412560 100644
--- a/src/translator.h
+++ b/src/translator.h
@@ -646,6 +646,13 @@ class Translator
     virtual QCString trOperationDocumentation() = 0;
     virtual QCString trDataMembers() = 0;
     virtual QCString trDataMemberDocumentation() = 0;
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    /// see for complete list: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
+    virtual QCString trISOLang() = 0;
 };
 
 #endif
diff --git a/src/translator_am.h b/src/translator_am.h
index 5b4c446..9af948a 100644
--- a/src/translator_am.h
+++ b/src/translator_am.h
@@ -1799,6 +1799,14 @@ class TranslatorArmenian : public TranslatorAdapter_1_8_0
     virtual QCString trDirDepGraph(const char *name)

     { return name + QCString("-ի ֆայլադարանների կախվածությունների գծագիր:"); }

 

-};

+//////////////////////////////////////////////////////////////////////////

+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19

+//////////////////////////////////////////////////////////////////////////

 

+    virtual QCString trISOLang()

+    {

+        return("hy");

+    }

+

+};

 #endif

diff --git a/src/translator_ar.h b/src/translator_ar.h
index 24281fd..80ba76f 100644
--- a/src/translator_ar.h
+++ b/src/translator_ar.h
@@ -1564,6 +1564,15 @@ class TranslatorArabic : public TranslatorAdapter_1_4_6
               "وجد أنها ملائمة. إنها تختلف عن الدالة أعلاه"
               "فقط في نوعية ال argument(s) التي تقبلها.";
     }
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("ar-EG");
+    }
 };
 
 #endif
diff --git a/src/translator_br.h b/src/translator_br.h
index 01c5b9f..16f8d6e 100644
--- a/src/translator_br.h
+++ b/src/translator_br.h
@@ -2336,6 +2336,13 @@ class TranslatorBrazilian : public Translator
     }
 
 //////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("pt-BR");
+    }
 
 };
 
diff --git a/src/translator_ca.h b/src/translator_ca.h
index ca9b7e9..d121428 100644
--- a/src/translator_ca.h
+++ b/src/translator_ca.h
@@ -1838,6 +1838,15 @@ class TranslatorCatalan : public TranslatorAdapter_1_8_0
     virtual QCString trDirDepGraph(const char *name)
     { return QCString("Graf de dependència de directoris per a ")+name+":"; }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("ca");
+    }
 };
 
 #endif
diff --git a/src/translator_cn.h b/src/translator_cn.h
index 0e559c1..735bf45 100644
--- a/src/translator_cn.h
+++ b/src/translator_cn.h
@@ -1920,7 +1920,15 @@ class TranslatorChinese : public TranslatorAdapter_1_8_15
       return "该单例的文档由下列文件生成:";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("zh");
+    }
 };
 
 #endif
diff --git a/src/translator_cz.h b/src/translator_cz.h
index 9d6c489..2b985ae 100644
--- a/src/translator_cz.h
+++ b/src/translator_cz.h
@@ -2041,8 +2041,15 @@ class TranslatorCzech : public TranslatorAdapter_1_8_15
       return result;
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("cs");
+    }
 };
 
 #endif // TRANSLATOR_CZ_H
diff --git a/src/translator_de.h b/src/translator_de.h
index bf5ce5e..a29284f 100644
--- a/src/translator_de.h
+++ b/src/translator_de.h
@@ -2254,8 +2254,15 @@ class TranslatorGerman : public TranslatorAdapter_1_8_15
     virtual QCString trCustomReference(const char *name)
     { return QCString(name)+"-Referenz"; }
 
-    //////////////////////////////////////////////////////////////////////////
 
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("de");
+    }
 };
 
 #endif
diff --git a/src/translator_dk.h b/src/translator_dk.h
index df063ef..08f9630 100644
--- a/src/translator_dk.h
+++ b/src/translator_dk.h
@@ -1766,6 +1766,15 @@ class TranslatorDanish : public TranslatorAdapter_1_8_0
     }
 
 
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("da");
+    }
+
 /*---------- For internal use: ----------------------------------------*/
   protected:
 	/*! For easy flexible-noun implementation.
diff --git a/src/translator_en.h b/src/translator_en.h
index 400e59c..cee8cf9 100644
--- a/src/translator_en.h
+++ b/src/translator_en.h
@@ -2254,7 +2254,13 @@ class TranslatorEnglish : public Translator
     }
 
 //////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("en-US");
+    }
 };
 
 #endif
diff --git a/src/translator_eo.h b/src/translator_eo.h
index 28876d7..67315f3 100644
--- a/src/translator_eo.h
+++ b/src/translator_eo.h
@@ -1941,8 +1941,15 @@ class TranslatorEsperanto : public TranslatorAdapter_1_8_4
       return "Fasona Superrigardo";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("eo");
+    }
 };
 
 #endif
diff --git a/src/translator_es.h b/src/translator_es.h
index b28ed75..03cd128 100644
--- a/src/translator_es.h
+++ b/src/translator_es.h
@@ -2304,8 +2304,15 @@ class TranslatorSpanish : public TranslatorAdapter_1_8_15
         return "Documentación miembro de datos";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("es");
+    }
 };
 
 #endif
diff --git a/src/translator_fa.h b/src/translator_fa.h
index 5a37330..e31793e 100644
--- a/src/translator_fa.h
+++ b/src/translator_fa.h
@@ -1779,6 +1779,15 @@ class TranslatorPersian : public TranslatorAdapter_1_7_5
       return convertDigitsToFarsi(sdate);
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("fa");
+    }
 };
 
 #endif
diff --git a/src/translator_fi.h b/src/translator_fi.h
index 2b94f48..7334957 100644
--- a/src/translator_fi.h
+++ b/src/translator_fi.h
@@ -1854,6 +1854,15 @@ class TranslatorFinnish : public TranslatorAdapter_1_6_0
       return "Tyyppien rajoitteet"; // "Type Constraints"
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("fi");
+    }
 };
 
 #endif
diff --git a/src/translator_fr.h b/src/translator_fr.h
index 0035e23..9317967 100644
--- a/src/translator_fr.h
+++ b/src/translator_fr.h
@@ -2320,8 +2320,15 @@ class TranslatorFrench : public TranslatorAdapter_1_8_15
         return "Documentation des champs de données";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("fr");
+    }
 };
 
 #endif
diff --git a/src/translator_gr.h b/src/translator_gr.h
index 6ed43db..4e45539 100644
--- a/src/translator_gr.h
+++ b/src/translator_gr.h
@@ -1980,6 +1980,15 @@ class TranslatorGreek : public TranslatorAdapter_1_8_15
       return result;
     }
 
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("el");
+    }
+
 };
 
 #endif
diff --git a/src/translator_hr.h b/src/translator_hr.h
index 1d17e2a..87cea8d 100644
--- a/src/translator_hr.h
+++ b/src/translator_hr.h
@@ -1567,8 +1567,15 @@ class TranslatorCroatian : public TranslatorAdapter_1_8_2
     virtual QCString trAdditionalInheritedMembers()
     { return "Dodatni naslijeđeni članovi"; }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("hr");
+    }
 };
 
 #endif
diff --git a/src/translator_hu.h b/src/translator_hu.h
index 44363c9..67d6a6e 100644
--- a/src/translator_hu.h
+++ b/src/translator_hu.h
@@ -2021,8 +2021,15 @@ class TranslatorHungarian : public TranslatorAdapter_1_8_15
       return result;
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("hu");
+    }
 };
 
 #endif
diff --git a/src/translator_id.h b/src/translator_id.h
index 2039c76..55a4366 100644
--- a/src/translator_id.h
+++ b/src/translator_id.h
@@ -1812,6 +1812,15 @@ class TranslatorIndonesian : public TranslatorAdapter_1_8_0
     virtual QCString trDirDepGraph(const char *name)
     { return QCString("Bagan dependensi directori untuk ")+name+":"; }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("id");
+    }
 };
 
 #endif
diff --git a/src/translator_it.h b/src/translator_it.h
index 9638a01..ddfed09 100644
--- a/src/translator_it.h
+++ b/src/translator_it.h
@@ -1976,8 +1976,15 @@ class TranslatorItalian : public TranslatorAdapter_1_8_15
       return result;
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("it");
+    }
 };
 
 #endif
diff --git a/src/translator_je.h b/src/translator_je.h
index d555421..2afe772 100644
--- a/src/translator_je.h
+++ b/src/translator_je.h
@@ -62,6 +62,11 @@ class TranslatorJapaneseEn : public TranslatorEnglish
     {
       return "128";
     }
+
+    virtual QCString trISOLang()
+    {
+        return("ja");
+    }
 };
 
 #endif
diff --git a/src/translator_jp.h b/src/translator_jp.h
index fc0d65d..64c49c0 100644
--- a/src/translator_jp.h
+++ b/src/translator_jp.h
@@ -1985,8 +1985,15 @@ class TranslatorJapanese : public TranslatorAdapter_1_8_15
              "の詳解を抽出しました:";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("ja");
+    }
 };
 
 #endif
diff --git a/src/translator_ke.h b/src/translator_ke.h
index c9f488c..077601e 100644
--- a/src/translator_ke.h
+++ b/src/translator_ke.h
@@ -59,6 +59,11 @@ class TranslatorKoreanEn : public TranslatorEnglish
     {
       return "129";
     }
+
+    virtual QCString trISOLang()
+    {
+        return("ko");
+    }
 };
 
 #endif
diff --git a/src/translator_kr.h b/src/translator_kr.h
index fb1c356..79fd6c8 100644
--- a/src/translator_kr.h
+++ b/src/translator_kr.h
@@ -2012,8 +2012,15 @@ class TranslatorKorean : public TranslatorAdapter_1_8_15
       return result;
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("ko");
+    }
 };
 
 #endif
diff --git a/src/translator_lt.h b/src/translator_lt.h
index f47d9d4..4d7739f 100644
--- a/src/translator_lt.h
+++ b/src/translator_lt.h
@@ -1510,6 +1510,15 @@ class TranslatorLithuanian : public TranslatorAdapter_1_4_6
     }
 
 
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("lt");
+    }
+
 };
 
 #endif
diff --git a/src/translator_lv.h b/src/translator_lv.h
index bd579da..107b209 100644
--- a/src/translator_lv.h
+++ b/src/translator_lv.h
@@ -1944,8 +1944,15 @@ class TranslatorLatvian : public TranslatorAdapter_1_8_4
       return "Dizaina pārskats";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("lv");
+    }
 };
 
 #endif
diff --git a/src/translator_mk.h b/src/translator_mk.h
index 3fc046e..2fd8e0b 100644
--- a/src/translator_mk.h
+++ b/src/translator_mk.h
@@ -1718,6 +1718,15 @@ class TranslatorMacedonian : public TranslatorAdapter_1_6_0
     {
       return "Ограничувања на Тип";
     }
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("mk");
+    }
 };
 
 #endif
diff --git a/src/translator_nl.h b/src/translator_nl.h
index 7cecc7d..81818f4 100644
--- a/src/translator_nl.h
+++ b/src/translator_nl.h
@@ -1784,7 +1784,15 @@ class TranslatorDutch : public Translator
     { return "Data members"; }
     virtual QCString trDataMemberDocumentation()
     { return "Documentatie van data members"; }
-    //////////////////////////////////////////////////////////////////////////
+//
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("nl");
+    }
 };
 
 #endif
diff --git a/src/translator_no.h b/src/translator_no.h
index eccd952..4154b78 100644..100755
--- a/src/translator_no.h
+++ b/src/translator_no.h
@@ -1563,6 +1563,15 @@ class TranslatorNorwegian : public TranslatorAdapter_1_4_6
               "generert for deg. Den skiller seg ut fra "
               "funksjonen ovenfor i argument(ene) den aksepterer.";
     }
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("nn");
+    }
 };
 
 #endif
diff --git a/src/translator_pl.h b/src/translator_pl.h
index e0ecc8f..2171f50 100644
--- a/src/translator_pl.h
+++ b/src/translator_pl.h
@@ -1866,8 +1866,15 @@ class TranslatorPolish : public TranslatorAdapter_1_8_2
     virtual QCString trAdditionalInheritedMembers()
     { return "Dodatkowe Dziedziczone Składowe"; }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("pl");
+    }
 };
 
 #endif
diff --git a/src/translator_pt.h b/src/translator_pt.h
index 970cf45..ff3aac4 100644
--- a/src/translator_pt.h
+++ b/src/translator_pt.h
@@ -2273,6 +2273,13 @@ class TranslatorPortuguese : public Translator
     }
 
 //////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("pt");
+    }
 
 };
 
diff --git a/src/translator_ro.h b/src/translator_ro.h
index 6f0c197..cf6d3df 100644
--- a/src/translator_ro.h
+++ b/src/translator_ro.h
@@ -2013,8 +2013,15 @@ class TranslatorRomanian : public TranslatorAdapter_1_8_15
       return result;
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("ro");
+    }
 };
 
 #endif
diff --git a/src/translator_ru.h b/src/translator_ru.h
index 9d92888..9ac2ed3 100644
--- a/src/translator_ru.h
+++ b/src/translator_ru.h
@@ -1968,7 +1968,15 @@ class TranslatorRussian : public TranslatorAdapter_1_8_15
       return result;
     }
 
-///////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("ru");
+    }
 };
 
 #endif
diff --git a/src/translator_sc.h b/src/translator_sc.h
index e8191df..34db617 100644
--- a/src/translator_sc.h
+++ b/src/translator_sc.h
@@ -1765,6 +1765,15 @@ class TranslatorSerbianCyrillic : public TranslatorAdapter_1_6_0
       return "Ограничења типова";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("sr-Cyrl");
+    }
 };
 
 #endif
diff --git a/src/translator_si.h b/src/translator_si.h
index 2dd7e5b..7229487 100644
--- a/src/translator_si.h
+++ b/src/translator_si.h
@@ -1207,6 +1207,15 @@ class TranslatorSlovene : public TranslatorAdapter_1_4_6
              "podana je zaradi priročnosti. Metoda se od predhodnje razlikuje "
              "samo v številu in/ali tipu formalnih argumentov.";
     }
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("sl");
+    }
 };
 
 #endif
diff --git a/src/translator_sk.h b/src/translator_sk.h
index 9ee8252..cc7de8c 100644
--- a/src/translator_sk.h
+++ b/src/translator_sk.h
@@ -1971,7 +1971,15 @@ class TranslatorSlovak : public TranslatorAdapter_1_8_15
       return result;
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("sk");
+    }
 };
 
 #endif // TRANSLATOR_SK_H
diff --git a/src/translator_sr.h b/src/translator_sr.h
index f5f132f..f1c4aa7 100644
--- a/src/translator_sr.h
+++ b/src/translator_sr.h
@@ -1769,6 +1769,15 @@ class TranslatorSerbian : public TranslatorAdapter_1_6_0
 //       return result;
 //     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("sr-Latn");
+    }
 };
 
 #endif
diff --git a/src/translator_sv.h b/src/translator_sv.h
index 6277445..cfdac67 100644
--- a/src/translator_sv.h
+++ b/src/translator_sv.h
@@ -2336,6 +2336,15 @@ class TranslatorSwedish : public Translator
     {
         return "Datamedlemsdokumentation";
     }
-};
 
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("sv");
+    }
+
+};
 #endif
diff --git a/src/translator_tr.h b/src/translator_tr.h
index d18f800..3fc658b 100644
--- a/src/translator_tr.h
+++ b/src/translator_tr.h
@@ -1817,6 +1817,15 @@ class TranslatorTurkish : public TranslatorAdapter_1_7_5
     }
 
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("tr");
+    }
 };
 
 #endif
diff --git a/src/translator_tw.h b/src/translator_tw.h
index 9e9092d..61d5a1f 100644
--- a/src/translator_tw.h
+++ b/src/translator_tw.h
@@ -1977,8 +1977,15 @@ class TranslatorChinesetraditional : public TranslatorAdapter_1_8_15
       return result;
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("zh-Hant");
+    }
 };
 
 #endif
diff --git a/src/translator_ua.h b/src/translator_ua.h
index 034cb1b..6ff908a 100644
--- a/src/translator_ua.h
+++ b/src/translator_ua.h
@@ -1909,8 +1909,15 @@ class TranslatorUkrainian : public TranslatorAdapter_1_8_4
       return "Огляд дизайну проекту";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
 //////////////////////////////////////////////////////////////////////////
 
+    virtual QCString trISOLang()
+    {
+        return("uk");
+    }
 };
 
 #endif
diff --git a/src/translator_vi.h b/src/translator_vi.h
index b391b0c..644eb6e 100644
--- a/src/translator_vi.h
+++ b/src/translator_vi.h
@@ -1750,6 +1750,15 @@ class TranslatorVietnamese : public TranslatorAdapter_1_6_0
       return "Ràng buộc của kiểu (Type)";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("vi");
+    }
 };
 
 #endif
diff --git a/src/translator_za.h b/src/translator_za.h
index dd5ddf9..43e1e8f 100644
--- a/src/translator_za.h
+++ b/src/translator_za.h
@@ -1718,6 +1718,15 @@ class TranslatorAfrikaans : public TranslatorAdapter_1_6_0
       return "Tipe Limiete";
     }
 
+
+//////////////////////////////////////////////////////////////////////////
+// new since 1.8.19, but completely filled so no need for a TranslatorAdapter_1_8_19
+//////////////////////////////////////////////////////////////////////////
+
+    virtual QCString trISOLang()
+    {
+        return("af");
+    }
 };
 
 #endif
diff --git a/src/xmlgen.cpp b/src/xmlgen.cpp
index 3a649e9..ec728c4 100644
--- a/src/xmlgen.cpp
+++ b/src/xmlgen.cpp
@@ -154,7 +154,9 @@ static void writeXMLHeader(FTextStream &t)
   t << "<?xml version='1.0' encoding='UTF-8' standalone='no'?>" << endl;;
   t << "<doxygen xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" ";
   t << "xsi:noNamespaceSchemaLocation=\"compound.xsd\" ";
-  t << "version=\"" << getDoxygenVersion() << "\">" << endl;
+  t << "version=\"" << getDoxygenVersion() << "\" ";
+  t << "xml:lang=\"" << theTranslator->trISOLang() << "\"";
+  t << ">" << endl;
 }
 
 static void writeCombineScript()
@@ -178,7 +180,7 @@ static void writeCombineScript()
   "<xsl:stylesheet xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" version=\"1.0\">\n"
   "  <xsl:output method=\"xml\" version=\"1.0\" indent=\"no\" standalone=\"yes\" />\n"
   "  <xsl:template match=\"/\">\n"
-  "    <doxygen version=\"{doxygenindex/@version}\">\n"
+  "    <doxygen version=\"{doxygenindex/@version}\" xml:lang=\"{doxygenindex/@xml:lang}\">\n"
   "      <!-- Load all doxygen generated xml files -->\n"
   "      <xsl:for-each select=\"doxygenindex/compound\">\n"
   "        <xsl:copy-of select=\"document( concat( @refid, '.xml' ) )/doxygen/*\" />\n"
@@ -1907,6 +1909,7 @@ void generateXML()
   QDir xmlDir(outputDirectory);
   createSubDirs(xmlDir);
 
+  ResourceMgr::instance().copyResource("xml.xsd",outputDirectory);
   ResourceMgr::instance().copyResource("index.xsd",outputDirectory);
 
   QCString fileName=outputDirectory+"/compound.xsd";
@@ -1959,7 +1962,9 @@ void generateXML()
   t << "<?xml version='1.0' encoding='UTF-8' standalone='no'?>" << endl;;
   t << "<doxygenindex xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" ";
   t << "xsi:noNamespaceSchemaLocation=\"index.xsd\" ";
-  t << "version=\"" << getDoxygenVersion() << "\">" << endl;
+  t << "version=\"" << getDoxygenVersion() << "\" ";
+  t << "xml:lang=\"" << theTranslator->trISOLang() << "\"";
+  t << ">" << endl;
 
   {
     ClassSDict::Iterator cli(*Doxygen::classSDict);