patch 9.0.0321: cannot use the message popup window directly
Problem: Cannot use the message popup window directly.
Solution: Add ":echowindow".
diff --git a/src/globals.h b/src/globals.h
index 6ea3506..f877af3 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -236,6 +236,7 @@
EXTERN int did_emsg_syntax; // did_emsg set because of a
// syntax error
EXTERN int called_emsg; // always incremented by emsg()
+EXTERN int in_echowindow; // executing ":echowindow"
EXTERN int ex_exitval INIT(= 0); // exit value for ex mode
EXTERN int emsg_on_display INIT(= FALSE); // there is an error message
EXTERN int rc_did_emsg INIT(= FALSE); // vim_regcomp() called emsg()