support to set Tibetan as document language

- polyglossia supports http://en.wikipedia.org/wiki/Standard_Tibetan so we can support it too
- fileformat change

development/FORMAT

@@ -11,6 +11,9 @@ adjustments are made to tex2lyx and bugs are fixed in lyx2lyx.
 
 -----------------------
 
+2013-05-28 Uwe Stöhr <uwestoehr@web.de>
+	* Format incremented to 473: support to set Tibetan as document language
+
 2013-05-26 Uwe Stöhr <uwestoehr@web.de>
 	* Format incremented to 472: added 2 new abstract styles to the
 	  aa.layout file

lib/languages

@@ -918,6 +918,14 @@ Language thai
 	EndPostBabelPreamble
 End
 
+# not supported by babel
+Language tibetan
+	GuiName          "Tibetan"
+	PolyglossiaName  tibetan
+	Encoding         utf8
+	LangCode         bo_CN
+End
+
 Language turkish
 	GuiName          "Turkish"
 	BabelName        turkish

lib/lyx2lyx/lyx_2_1.py

@@ -4180,6 +4180,24 @@ def revert_aa2(document):
         return
 
 
+def revert_tibetan(document):
+    "Set the document language for Tibetan to English" 
+
+    if document.language == "tibetan":
+        document.language = "english"
+        i = find_token(document.header, "\\language", 0) 
+        if i != -1: 
+            document.header[i] = "\\language english" 
+    j = 0
+    while j < len(document.body): 
+        j = find_token(document.body, "\\lang tibetan", j)
+        if j != -1:
+            document.body[j] = document.body[j].replace("\\lang tibetan", "\\lang english")
+            j += 1
+        else:
+            j = len(document.body)
+
+
 ##
 # Conversion hub
 #
@@ -4244,10 +4262,12 @@ convert = [
            [469, []],
            [470, []],
            [471, [convert_cite_engine_type_default]],
-           [472, []]
+           [472, []],
+           [473, []]
           ]
 
 revert =  [
+           [472, [revert_tibetan]],
            [471, [revert_aa1,revert_aa2]],
            [470, [revert_cite_engine_type_default]],
            [469, [revert_forced_local_layout]],

src/tex2lyx/Preamble.cpp

@@ -304,10 +304,10 @@ const char * const Preamble::polyglossia_languages[] = {
 "armenian", "divehi", "interlingua", "polish", "telugu", "asturian", "dutch",
 "irish", "portuges", "thai", "bahasai", "english", "italian", "romanian", "turkish",
 "bahasam", "esperanto", "lao", "russian", "turkmen", "basque", "estonian", "latin",
-"samin", "ukrainian", "bengali", "farsi", "latvian", "sanskrit", "urdu", "brazil",
-"brazilian", "finnish", "lithuanian", "scottish", "usorbian", "breton", "french",
-"lsorbian", "serbian", "vietnamese", "bulgarian", "galician", "magyar", "slovak",
-"welsh", "catalan", "german", "malayalam", "slovenian", "coptic", "greek",
+"samin", "ukrainian", "bengali", "farsi", "latvian", "sanskrit", "tibetan", "urdu",
+"brazil", "brazilian", "finnish", "lithuanian", "scottish", "usorbian", "breton", 
+"french", "lsorbian", "serbian", "vietnamese", "bulgarian", "galician", "magyar",
+"slovak", "welsh", "catalan", "german", "malayalam", "slovenian", "coptic", "greek",
 "marathi", "spanish",
 "american", "ancient", "australian", "british", "monotonic", "newzealand",
 "polytonic", 0};
@@ -322,10 +322,10 @@ const char * const Preamble::coded_polyglossia_languages[] = {
 "armenian", "divehi", "interlingua", "polish", "telugu", "asturian", "dutch",
 "irish", "portuges", "thai", "bahasa", "english", "italian", "romanian", "turkish",
 "bahasam", "esperanto", "lao", "russian", "turkmen", "basque", "estonian", "latin",
-"samin", "ukrainian", "bengali", "farsi", "latvian", "sanskrit", "urdu", "brazilian",
-"brazilian", "finnish", "lithuanian", "scottish", "uppersorbian", "breton", "french",
-"lowersorbian", "serbian", "vietnamese", "bulgarian", "galician", "magyar", "slovak",
-"welsh", "catalan", "ngerman", "malayalam", "slovene", "coptic", "greek",
+"samin", "ukrainian", "bengali", "farsi", "latvian", "sanskrit", "tibetan", "urdu",
+"brazilian", "brazilian", "finnish", "lithuanian", "scottish", "uppersorbian", "breton",
+"french", "lowersorbian", "serbian", "vietnamese", "bulgarian", "galician", "magyar",
+"slovak", "welsh", "catalan", "ngerman", "malayalam", "slovene", "coptic", "greek",
 "marathi", "spanish",
 "american", "ancientgreek", "australian", "british", "greek", "newzealand",
 "polutonikogreek", 0};

src/version.h

@@ -30,8 +30,8 @@ extern char const * const lyx_version_info;
 
 // Do not remove the comment below, so we get merge conflict in
 // independent branches. Instead add your own.
-#define LYX_FORMAT_LYX 472 // uwestoehr: updated layout for A&A class
-#define LYX_FORMAT_TEX2LYX 472
+#define LYX_FORMAT_LYX 473 // uwestoehr: support Tibetan as document language
+#define LYX_FORMAT_TEX2LYX 473
 
 #if LYX_FORMAT_TEX2LYX != LYX_FORMAT_LYX
 #ifndef _MSC_VER