/// return true if a char is alphabetical (including accented chars)
bool isLetterChar(char_type c);
+/// return true if a char is lowercase
+bool isLower(char_type c);
+
/// return whether \p c is an alphabetic character in the ASCII range
bool isAlphaASCII(char_type c);
/// return true if a unicode char is a space.
bool isSpace(char_type c);
-/// return true if a unicode char is a digit.
-bool isDigit(char_type c);
+/// return true if a unicode char is a numeral.
+bool isNumber(char_type c);
+
+/// return true if a unicode char has the direction attribute
+/// Common Number Separator [CS]
+bool isCommonNumberSeparator(char_type c);
+
+/// return true if a unicode char has the direction attribute
+/// European Number Terminator [ET]
+bool isEuropeanNumberTerminator(char_type c);
/// return whether \p c is a digit in the ASCII range
bool isDigitASCII(char_type c);
+/// return whether \p c is alpha or a digit in the ASCII range
+bool isAlnumASCII(char_type c);
+
+/// return whether \p c is in the ASCII range
+bool isASCII(char_type c);
+
+/// return whether \p c is in the 'Punctuation, Open' unicode category
+bool isOpenPunctuation(char_type c);
+
} // namespace lyx
#endif // TEXTUTILS_H