Sort language list in the Preferences dialog

Sort langlist before displaying using custom less than operator.

Fix notepad-plus-plus#14245, close notepad-plus-plus#14443

PowerEditor/src/Parameters.h

@@ -586,6 +586,14 @@ struct LangMenuItem final
 
 	LangMenuItem(LangType lt, int cmdID = 0, const std::wstring& langName = TEXT("")):
 	_langType(lt), _cmdID(cmdID), _langName(langName){};
+
+	bool operator<(const LangMenuItem& rhs)
+	{
+		std::wstring lhs_lang(this->_langName.length(), ' '), rhs_lang(rhs._langName.length(), ' ');
+		std::transform(this->_langName.begin(), this->_langName.end(), lhs_lang.begin(), towlower);
+		std::transform(rhs._langName.begin(), rhs._langName.end(), rhs_lang.begin(), towlower);
+		return lhs_lang < rhs_lang;
+	}
 };
 
 struct PrintSettings final {

PowerEditor/src/WinControls/Preference/preferenceDlg.cpp

@@ -19,6 +19,7 @@
 #include "lesDlgs.h"
 #include "EncodingMapper.h"
 #include "localization.h"
+#include <algorithm>
 
 #define MyGetGValue(rgb)      (LOBYTE((rgb)>>8))
 
@@ -2861,12 +2862,20 @@ intptr_t CALLBACK LanguageSubDlg::run_dlgProc(UINT message, WPARAM wParam, LPARA
 						if (str.length() > 0)
 						{
 							_langList.push_back(LangMenuItem(static_cast<LangType>(i), cmdID, str));
-							::SendDlgItemMessage(_hSelf, IDC_LIST_ENABLEDLANG, LB_ADDSTRING, 0, reinterpret_cast<LPARAM>(str.c_str()));
 						}
 					}
 				}
 			}
 
+			std::sort(_langList.begin(), _langList.end());
+
+			for (size_t i = 0, len = _langList.size(); i < len; ++i)
+			{
+				::SendDlgItemMessage(_hSelf, IDC_LIST_ENABLEDLANG, LB_ADDSTRING, 0, reinterpret_cast<LPARAM>(_langList[i]._langName.c_str()));
+			}
+
+			std::sort(nppGUI._excludedLangList.begin(), nppGUI._excludedLangList.end());
+
 			for (size_t i = 0, len = nppGUI._excludedLangList.size(); i < len ; ++i)
 			{
 				::SendDlgItemMessage(_hSelf, IDC_LIST_DISABLEDLANG, LB_ADDSTRING, 0, reinterpret_cast<LPARAM>(nppGUI._excludedLangList[i]._langName.c_str()));