Lexer

- Added downgrade from typeNumber to typeIdentifer if a number is followed by a
  letter, thus supporting "9th" as an identifier. This causes much breakage.

src/Lexer.cpp

@@ -123,6 +123,8 @@ bool Lexer::token (std::string& result, Type& type)
 
         // Try a legacy rc.dateformat parse here.
         try
+        {
+          if (Lexer::dateFormat != "")
           {
             std::string::size_type start = _i < 4 ? 0 : _i - 4;
             std::string::size_type space = _input.find (' ', _i);
@@ -138,6 +140,7 @@ bool Lexer::token (std::string& result, Type& type)
             type = typeDate;
             return true;
           }
+        }
 
         catch (...) { /* Never mind. */ }
 
@@ -345,6 +348,12 @@ bool Lexer::token (std::string& result, Type& type)
         result += utf8_character (_n0);
         shift ();
       }
+      else if (is_ident_start (_n0))
+      {
+        type = typeIdentifier;
+        result += utf8_character (_n0);
+        shift ();
+      }
       else
       {
         return true;