Method acceptChar

src/main/java/org/htmlunit/html/HtmlElement.java:870–875

Indicates if the provided character can be "typed" in the element. @param c the character @return true if it is accepted

(final char c)

     * @return {@code true} if it is accepted
     */
    protected boolean acceptChar(final char c) {
        // This range is this is private use area
        // see http://www.unicode.org/charts/PDF/UE000.pdf
        return (c < '\uE000' || c > '\uF8FF')
                && (c == ' ' || c == '\t' || c == '\u3000' || c == '\u2006' || !Character.isWhitespace(c));
    }

    /**
     * Returns {@code true} if clicking Enter (ASCII 10, or '\n') should submit the enclosed form (if any).