add tests for updated regular expression

test-hook.sh

@@ -17,13 +17,15 @@ checkname ()
 
   filename="$1"
   counter=$(expr $counter \+ 1)
+  mkdir -p "$(dirname "$filename")" &&
   touch "$filename" &&
   git add "$filename" &&
   GIT_TRACE=1 git commit -m "my message"
   ret=$?
   git reset --hard $commit > /dev/null
 
-  if test $ret -eq 1
+  expected_exit_code=${2:-1}
+  if test $ret -eq $expected_exit_code
   then
     echo "Test $counter passed"
   else
@@ -50,6 +52,10 @@ echo "###reserved names###"
 checkname "CON.txt" 
 checkname "AUX.txt" 
 checkname "LPT1.txt" 
+checkname "COM1"
+checkname "NUL"
+checkname "sub/folder/PRN"
+checkname "comic-con.txt" 0
 
 echo "###no trailing period or space###"
 checkname " "