vim-patch:8.2.0840: search match count wrong when only match is in fold

Problem:    Search match count wrong when only match is in fold.
Solution:   Update search stats when in a closed fold. (Christian Brabandt,
            closes vim/vim#6160, closes vim/vim#6152)
6cb0726215

src/nvim/search.c

@@ -1370,7 +1370,10 @@ int do_search(
         && !shortmess(SHM_SEARCHCOUNT)
         && msgbuf != NULL) {
       search_stat(dirc, &pos, show_top_bot_msg, msgbuf,
-                  (count != 1 || has_offset));
+                  (count != 1
+                   || has_offset
+                   || (!(fdo_flags & FDO_SEARCH)
+                       && hasFolding(curwin->w_cursor.lnum, NULL, NULL))));
     }
 
     // The search command can be followed by a ';' to do another search.

src/nvim/testdir/test_search_stat.vim

@@ -186,6 +186,35 @@ func Test_search_stat()
   bwipe!
 endfunc
 
+func Test_search_stat_foldopen()
+  CheckScreendump
+
+  let lines =<< trim END
+    set shortmess-=S
+    setl foldenable foldmethod=indent foldopen-=search
+    call append(0, ['if', "\tfoo", "\tfoo", 'endif'])
+    let @/ = 'foo'
+    call cursor(1,1)
+    norm n
+  END
+  call writefile(lines, 'Xsearchstat1')
+
+  let buf = RunVimInTerminal('-S Xsearchstat1', #{rows: 10})
+  call TermWait(buf)
+  call VerifyScreenDump(buf, 'Test_searchstat_3', {})
+
+  call term_sendkeys(buf, "n")
+  call TermWait(buf)
+  call VerifyScreenDump(buf, 'Test_searchstat_3', {})
+
+  call term_sendkeys(buf, "n")
+  call TermWait(buf)
+  call VerifyScreenDump(buf, 'Test_searchstat_3', {})
+
+  call StopVimInTerminal(buf)
+  call delete('Xsearchstat1')
+endfunc
+
 func! Test_search_stat_screendump()
   CheckScreendump