patch 9.0.0350: :echowindow does not work in a compiled function
Problem: :echowindow does not work in a compiled function.
Solution: Handle the expression at compile time.
diff --git a/src/vim9cmds.c b/src/vim9cmds.c
index 93032d6..4ad87bc 100644
--- a/src/vim9cmds.c
+++ b/src/vim9cmds.c
@@ -1735,6 +1735,10 @@
generate_MULT_EXPR(cctx, ISN_EXECUTE, count);
else if (cmdidx == CMD_echomsg)
generate_MULT_EXPR(cctx, ISN_ECHOMSG, count);
+#ifdef HAS_MESSAGE_WINDOW
+ else if (cmdidx == CMD_echowindow)
+ generate_MULT_EXPR(cctx, ISN_ECHOWINDOW, count);
+#endif
else if (cmdidx == CMD_echoconsole)
generate_MULT_EXPR(cctx, ISN_ECHOCONSOLE, count);
else