Adding upstream version 2:9.1.1230.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

runtime/syntax/testdir/input/vim_ex_function_nested.vim

@@ -0,0 +1,38 @@
+" Vim :def and :function commands (nested)
+
+def FunA(): string
+    def DoFunA(): string
+	return "."
+    enddef
+
+    return DoFunA()
+enddef
+
+def FunB(): string
+    function DoFunB()
+	return ".."
+    endfunction
+
+    return DoFunB()
+enddef
+
+function FunC()
+    def DoFunC(): string
+	return "..."
+    enddef
+
+    return DoFunC()
+endfunction
+
+function FunD()
+    function DoFunD()
+	return "...."
+    endfunction
+
+    return DoFunD()
+endfunction
+
+echo FunA()
+echo FunB()
+echo FunC()
+echo FunD()