Re: x-create-frame is sluggish

[Jan D.]

> +   /* See if there is another frame already using same fontset. */
> +   FOR_EACH_FRAME (rest, frame)
> +     {
> +       struct frame *cf = XFRAME (frame);
> +       if (cf != f && FRAME_LIVE_P (f) && FRAME_X_P (cf)
> +           && FRAME_X_DISPLAY_INFO (cf) == FRAME_X_DISPLAY_INFO (f)
> +           && !strcmp (FRAME_XIC_BASE_FONTNAME (cf), base_fontname))
> +         return FRAME_XIC_FONTSET (cf);

You should use FRAME_X_DISPLAY, not FRAME_X_DISPLAY_INFO everywhere.
A frame can be opened on display ":0", "unix:0", "hostname:0" and so on,
but it is still the same display.  However, they will have different 
display
info.

        Jan D.