Add workaround to handle a problem with Enlightenment WM (Bug#53298)

* src/xterm.c (handle_one_xevent): Handle setting of variable
'x_set_frame_visibility_more_laxly' when receiving an Expose or
FocusIn event (Bug#53298).
(Qexpose): Define symbol.
(x_set_frame_visibility_more_laxly): New Lisp variable.
* etc/PROBLEMS: Mention frame redraw problem with the
Enlightenment WM and 'x-set-frame-visibility-more-laxly'
workaround.

1 files changed, 7 insertions, 0 deletions

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index eb685e5bfb5..e48ce5a8b0c 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -1269,6 +1269,13 @@ and then Alt-F7).  A bug for it is here:
 https://bugs.launchpad.net/ubuntu/+source/metacity/+bug/231034.
 Note that a permanent fix seems to be to disable "assistive technologies".
 
+*** Enlightenment: Frames not redrawn after switching virtual desktops
+
+With Enlightenment version 0.25, Emacs frames may no be redrawn orderly
+after switching back from another virtual desktop.  Setting the variable
+'x-set-frame-visibility-more-laxly' to one of 'focus-in', 'expose' or
+'t' should fix this.
+
 *** Gnome: Emacs receives input directly from the keyboard, bypassing XIM.
 
 This seems to happen when gnome-settings-daemon version 2.12 or later