Subject: bug#16028: 24.3.50; Latest build completely breaks my thumnail frames code

From: Eli Zaretskii <[email-masked]>
Date: Fri, 06 Dec 2013 21:15:16 +0200

> Date: Fri, 06 Dec 2013 19:57:09 +0100
> From: martin rudalics <[email-masked]>
> CC: [email-masked], [email-masked]
> 
> x_set_font does a lot to make redisplay happen.

You mean the call to clear_current_matrices?  AFAIR, that's not
enough: it just ensures that _when_ redisplay happens, every screen
line will get redrawn.  But it doesn't force redisplay.

Perhaps try calling fset_redisplay for that frame.