Function IsTextDirectionChar

src/string_func.h:111–126

* Is the given character a text direction character. * @param c The character to test. * @return true iff the character is used to influence * the text direction. */

 *         the text direction.
 */
inline bool IsTextDirectionChar(char32_t c)
{
	switch (c) {
		case CHAR_TD_LRM:
		case CHAR_TD_RLM:
		case CHAR_TD_LRE:
		case CHAR_TD_RLE:
		case CHAR_TD_LRO:
		case CHAR_TD_RLO:
		case CHAR_TD_PDF:
			return true;

		default:
			return false;
	}
}

inline bool IsPrintable(char32_t c)
{