function doIgnore(lexeme) {
        if (top.matcher.regexIndex === 0) {
          // no more regexes to potentially match here, so we move the cursor forward one
          // space
          modeBuffer += lexeme[0];
          return 1;
        } else {
          // no need to move the cursor, we still have additional regexes to try and
          // match at this very spot
          resumeScanAtSamePosition = true;
          return 0;
        }
      }
Handle matching but then ignoring a sequence of text

@param {string} lexeme - string containing full match text