io.IoLexer.readCharAnyCase C# (CSharp) Method

        public int readCharAnyCase(char ch)
        {
            if (!onNULL())
            {
                char c = nextChar();
                if (Char.ToLower(c) == Char.ToLower(ch)) {
                    return 1;
                }
                prevChar();
            }
            return 0;
        }