bug#19776: The hourglass

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> If I stick a call to Fredisplay in there, then it'll actually display
>> the hourglass, but that seems rather heavy-handed.  What's the proper
>> way to trigger the redisplay here?
>
> Try calling FRAME_MOUSE_UPDATE.

Didn't make a difference, unfortunately.

         redisplay_preserve_echo_area (2);

does the trick...  That function seems to be called from everywhere --
perhaps that's the one to use:

   This is useful in situations where you need to redisplay but no
   user action has occurred, making it inappropriate for the message
   area to be cleared.

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