glyphless

[Eli Zaretskii]

    /* Sub-stretch for type == GLYPHLESS_GLYPH.  */
    struct
    {
      /* Value is an enum of the type glyphless_display_method.  */
      unsigned method : 2;
      /* 1 iff this glyph is for a character of no font. */
      unsigned for_no_font : 1;
      /* Length of acronym or hexadecimal code string (at most 8).  */
      unsigned len : 4;
      /* Character to display.  Actually we need only 22 bits.  */
      unsigned ch : 22; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
    } glyphless;

I though Andreas said that using 25 here, so that the entire member
fits in 32 bits, would be better (performance-wise, I presume)?