ansi 16 after ansi 256 ignores bold?

Simulate(ANSI(38,5,226).."aaa"..ANSI(31,1).."bbb")
Simulate(ANSI(33,1).."ccc"..ANSI(31,1).."ddd")

Line 390 (390), Thursday, May 05, 6:59:08 AM
 Flags = End para: no, Note: no, User input: no, Log: no, Bookmark: no
 Length = 12, last space = -1
 Text = "aaabbbcccddd"

4 style runs

1: Offset = 0, Length = 3, Text = "aaa"
 No action.
 Flags = Hilite: no, Underline: no, Blink: no, Inverse: no, Changed: no
 Foreground colour RGB   : R=255, G=255, B=0
 Background colour RGB   : R=0, G=0, B=0

2: Offset = 3, Length = 3, Text = "bbb"
 No action.
 Flags = Hilite: YES, Underline: no, Blink: no, Inverse: no, Changed: no
 Foreground colour RGB   : R=128, G=0, B=0
 Background colour RGB   : R=0, G=0, B=0

3: Offset = 6, Length = 3, Text = "ccc"
 No action.
 Flags = Hilite: YES, Underline: no, Blink: no, Inverse: no, Changed: no
 Foreground colour RGB   : R=255, G=255, B=0
 Background colour RGB   : R=0, G=0, B=0

4: Offset = 9, Length = 3, Text = "ddd"
 No action.
 Flags = Hilite: YES, Underline: no, Blink: no, Inverse: no, Changed: no
 Foreground colour RGB   : R=255, G=0, B=0
 Background colour RGB   : R=0, G=0, B=0

12 columns in 4 style runs

------ (end line information) ------

[...other methods...]
newStyleRun: function() {
  var fg = this.fg;
  if (this.bright && !this.xterm) {
    fg += 8;
  }
  
  var bg = this.bg;
  if (this.negative) {
    bg = fg;
    fg = this.bg;
  }
  
  if (this.concealed) {
    fg = bg;
  }
  
  var span = ["<span class=\"fg" + fg + " bg" + bg];
  if (this.italic) { span.push(" italic"); }
  if (this.strike) { span.push(" strike"); }
  if (this.underline) { span.push(" underline"); }
  span.push("\">");
  
  return span.join("");
}
[...]

  // switch back to ANSI colour if required
/*   obsolete
  if ((iCode >= 30 && iCode <= 37) ||
      (iCode >= 40 && iCode <= 47))
    {
    // we can't mix them - if we go back to ANSI colours we have to discard
    // the RGB codes
    if ((iFlags & COLOURTYPE) == COLOUR_RGB)
      {
      iForeColour = WHITE;
      iBackColour = BLACK;     
      }
    iFlags &= ~COLOURTYPE;  // clear RGB or custom bits
    iFlags |= COLOUR_ANSI;
    }

*/