patch 8.2.2797: Search highlight disappears in the Visual area

Problem:    Search highlight disappears in the Visual area.
Solution:   Combine the search attributes. (closes #8134)
diff --git a/src/testdir/dumps/Test_hlsearch_visual_1.dump b/src/testdir/dumps/Test_hlsearch_visual_1.dump
new file mode 100644
index 0000000..99150db
--- /dev/null
+++ b/src/testdir/dumps/Test_hlsearch_visual_1.dump
@@ -0,0 +1,6 @@
+|x+0&#ffffff0@2| |y+2&#ffff4012|y+2&#e0e0e08@1| +0&&|z@2| | +0&#ffffff0@27
+|x+0&#e0e0e08@2| |y+2&&@2| +0&&|z@2| | +0&#ffffff0@27
+|x+0&#e0e0e08@2| |y+2&&>y+2&#ffff4012@1| +0&#ffffff0|z@2| @28
+|~+0#4040ff13&| @38
+|~| @38
+|-+2#0000000&@1| |V|I|S|U|A|L| |-@1|3+0&&| @8|3|,|6| @10|A|l@1| 
diff --git a/src/testdir/test_search.vim b/src/testdir/test_search.vim
index 5fed81c..e7c9ac4 100644
--- a/src/testdir/test_search.vim
+++ b/src/testdir/test_search.vim
@@ -964,6 +964,26 @@
   call delete('Xhlsearch_script')
 endfunc
 
+func Test_hlsearch_and_visual()
+  CheckOption hlsearch
+  CheckScreendump
+
+  call writefile([
+	\ 'set hlsearch',
+        \ 'call setline(1, repeat(["xxx yyy zzz"], 3))',
+        \ 'hi Search cterm=bold',
+	\ '/yyy',
+	\ 'call cursor(1, 6)',
+	\ ], 'Xhlvisual_script')
+  let buf = RunVimInTerminal('-S Xhlvisual_script', {'rows': 6, 'cols': 40})
+  call term_sendkeys(buf, "vjj")
+  call VerifyScreenDump(buf, 'Test_hlsearch_visual_1', {})
+  call term_sendkeys(buf, "\<Esc>")
+
+  call StopVimInTerminal(buf)
+  call delete('Xhlvisual_script')
+endfunc
+
 func Test_incsearch_substitute()
   CheckOption incsearch