bug#27647: 26.0.50; Line numbers implemented natively disappear momentarily when frame out of focus

[martin rudalics]

> (let ((tooltip-hide-delay 1000)
>        (frame (make-frame)))
>    (select-frame frame)
>    (tooltip-show ".....")
>    (delete-frame frame))
>
> ... but try for yourself.  Unless you have a better idea I'll make
> x_create_tip_frame call make_frame_without_minibuffer.

The below seems to fix it and should be used anyway.  Still someone might want
to select a tooltip frame ...

martin


--- a/src/frame.c
+++ b/src/frame.c
@@ -1916,6 +1916,7 @@ of them (the selected terminal frame) is actually 
displayed.
         See https://debbugs.gnu.org/cgi/bugreport.cgi?bug=15025.  */
       FOR_EACH_FRAME (tail, frame1)
        if (!EQ (frame, frame1)
+           && NILP (Fframe_parameter (frame1, Qtooltip))
            && (FRAME_TERMINAL (XFRAME (frame))
                == FRAME_TERMINAL (XFRAME (frame1)))
            && FRAME_VISIBLE_P (XFRAME (frame1)))
@@ -1926,7 +1927,9 @@ of them (the selected terminal frame) is actually 
displayed.
        {
          FOR_EACH_FRAME (tail, frame1)
            {
-             if (! EQ (frame, frame1) && FRAME_LIVE_P (XFRAME (frame1)))
+             if (!EQ (frame, frame1)
+                 && FRAME_LIVE_P (XFRAME (frame1))
+                 && NILP (Fframe_parameter (frame1, Qtooltip)))
                {
                  /* Do not change a text terminal's top-frame.  */
                  struct frame *f1 = XFRAME (frame1);