bug#25408: Remove Decorations Around Emacs Frame (Windows OS)

[martin rudalics]

> I've run into another small issue: there doesn't seem to be a way to turn off 
truncation marks in tooltip frames. Is that correct? This bit of xdisp.c seems to 
take care of that for Emacs' default tip frame; is there a way to emulate this for 
Lisp-created frames?
>
>    /* Get dimensions of truncation and continuation glyphs.  These are
>       displayed as fringe bitmaps under X, but we need them for such
>       frames when the fringes are turned off.  But leave the dimensions
>       zero for tooltip frames, as these glyphs look ugly there and also
>       sabotage calculations of tooltip dimensions in x-show-tip.  */
> #ifdef HAVE_WINDOW_SYSTEM
>    if (!(FRAME_WINDOW_P (it->f)
>    && FRAMEP (tip_frame)
>    && it->f == XFRAME (tip_frame)))
> #endif

Please try the attached patch (I only checked whether it compiles and
builds on Windows).  You have to add a non-nil 'no-special-glyphs' frame
parameter to suppress such glyphs.

And please test the new behavior for tooltip frames as well.

Thanks, martin

no-special-glyphs.diff
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