patch 8.1.1405: "highlight" option of popup windows not supported
Problem: "highlight" option of popup windows not supported.
Solution: Implement the "highlight" option.
diff --git a/src/testdir/dumps/Test_popupwin_03.dump b/src/testdir/dumps/Test_popupwin_03.dump
index 7436a01..4f6f9dd 100644
--- a/src/testdir/dumps/Test_popupwin_03.dump
+++ b/src/testdir/dumps/Test_popupwin_03.dump
@@ -1,8 +1,8 @@
| +2&#ffffff0|+| |[|N|o| |N|a|m|e|]| | +8#0000001#e0e0e08|[|N|o| |N|a|m|e|]| | +1#0000000#ffffff0@49|X+8#0000001#e0e0e08
>1+0#0000000#ffffff0| @73
-|2| @8|h+0fd7ff255|e|l@1|o| |t|h|e|r|e| @8|r+0#0000001#ffd7ff255| |o|n|e| @8| +0#0000000#ffffff0@30
-|3| @22|a+0#0000001#ffd7ff255|n|o|t|h|e|r| |t|w|o| @8| +0#0000000#ffffff0@30
-|4| @22|a+0#0000001#ffd7ff255|n|o|t|h|e|r| |t|h|r|e@1| @6| +0#0000000#ffffff0@30
+|2| @8|h+0fd7ff255|e|l@1|o| |t|h|e|r|e| @8|r+0&#afffff255| |o|n|e| @8| +0&#ffffff0@30
+|3| @22|a+0&#afffff255|n|o|t|h|e|r| |t|w|o| @8| +0&#ffffff0@30
+|4| @22|a+0&#afffff255|n|o|t|h|e|r| |t|h|r|e@1| @6| +0&#ffffff0@30
|5| @73
|6| @73
|7| @73