diff --git a/test_date2name.py b/test_date2name.py
index abcc357..7426d42 100644
--- a/test_date2name.py
+++ b/test_date2name.py
@@ -383,3 +383,42 @@ def test_file_pattern_month(arg1, name=TFOLDER):
     assert os.path.isdir(new)            # presence stamped folder
     os.rmdir(new)
     assert os.path.isdir(new) is False   # space cleaning
+
+@pytest.mark.folders
+@pytest.mark.short
+@pytest.mark.parametrize("arg1", ["-S", "--short",
+                                  "-S -d", "--short -d",
+                                  "-S --directories", "--short --directories",
+                                  "-S -m", "--short -m",
+                                  "-S --mtime", "--short --mtime",
+                                  "-S -c", "--short -c",
+                                  "-S --ctime", "--short --ctime"])
+def test_folder_pattern_short(arg1, name=TFOLDER):
+    """Prepend 'YYMMDD_' to the file name."""
+    prepare_testfolder(name)
+    day = str("")
+    new = str("")
+
+    if arg1 in ["-S", "--short",
+                "-S -d", "--short -d",
+                "-S --directories", "--short --directories",
+                "-S -m", "--short -m",
+                "-S --mtime", "--short --mtime"]:
+        day = query_modification_time(name).split()[0]
+
+    elif arg1 in ["-S -c", "--short -c",
+                  "-S --ctime", "--short --ctime"]:
+        day = query_creation_time(name).split()[0]
+
+    # drop the hyphens in the datestamp:
+    day = day.replace("-", "")
+    # drop the first two characters about the year (e.g., 1789 -> 89)
+    day = day[2:]
+
+    new = "_".join([day, name])
+    test = getoutput(f"python3 {PROGRAM} {name} {arg1}")
+
+    assert os.path.isdir(name) is False  # absence unstamped folder
+    assert os.path.isdir(new)            # presence stamped folder
+    os.rmdir(new)
+    assert os.path.isdir(new) is False   # space cleaning
diff --git a/test_generator.org b/test_generator.org
index ade8710..e05ed71 100755
--- a/test_generator.org
+++ b/test_generator.org
@@ -467,7 +467,7 @@
             assert os.path.isfile("test.txt") is False
       #+end_src
 
-*** perform the tests on folders [3/6]
+*** perform the tests on folders [4/6]
 
     At present, most of the instructions already defined and used in section
     "test on files" is repeated with small adjustments for checking date2name's
@@ -582,7 +582,47 @@
             assert os.path.isdir(new) is False   # space cleaning
       #+end_src
       
-    + [ ] short pattern, YYMMDD_ prepended
+    + [X] short pattern, YYMMDD_ prepended
+      #+begin_src python :tangle test_date2name.py
+        @pytest.mark.folders
+        @pytest.mark.short
+        @pytest.mark.parametrize("arg1", ["-S", "--short",
+                                          "-S -d", "--short -d",
+                                          "-S --directories", "--short --directories",
+                                          "-S -m", "--short -m",
+                                          "-S --mtime", "--short --mtime",
+                                          "-S -c", "--short -c",
+                                          "-S --ctime", "--short --ctime"])
+        def test_folder_pattern_short(arg1, name=TFOLDER):
+            """Prepend 'YYMMDD_' to the file name."""
+            prepare_testfolder(name)
+            day = str("")
+            new = str("")
+        
+            if arg1 in ["-S", "--short",
+                        "-S -d", "--short -d",
+                        "-S --directories", "--short --directories",
+                        "-S -m", "--short -m",
+                        "-S --mtime", "--short --mtime"]:
+                day = query_modification_time(name).split()[0]
+        
+            elif arg1 in ["-S -c", "--short -c",
+                          "-S --ctime", "--short --ctime"]:
+                day = query_creation_time(name).split()[0]
+        
+            # drop the hyphens in the datestamp:
+            day = day.replace("-", "")
+            # drop the first two characters about the year (e.g., 1789 -> 89)
+            day = day[2:]
+        
+            new = "_".join([day, name])
+            test = getoutput(f"python3 {PROGRAM} {name} {arg1}")
+        
+            assert os.path.isdir(name) is False  # absence unstamped folder
+            assert os.path.isdir(new)            # presence stamped folder
+            os.rmdir(new)
+            assert os.path.isdir(new) is False   # space cleaning
+      #+end_src
       
     + [ ] withtime pattern, YYYY-MM-DDThh.mm.ss_ prepended