1 % file replaced with directory

     2 adding a

     3 % should fail - would corrupt dirstate

     4 abort: file named 'a' already in dirstate

     5 % directory replaced with file

     6 adding a/a

     7 % should fail - would corrupt dirstate

     8 abort: directory named 'a' already in dirstate

     9 % directory replaced with file

    10 adding b/c/d

    11 % should fail - would corrupt dirstate

    12 abort: directory named 'b' already in dirstate