don't allow to amend if there are no parents
tree9c63c9e778d9c423fb5fba871a740314611e375c
-rw-r--r-- 596 .gitignore
-rw-r--r-- 495 .gitmodules
drwxr-xr-x - Languages
-rw-r--r-- 3425 build.txt
drwxr-xr-x - common
drwxr-xr-x - contrib
drwxr-xr-x - doc
drwxr-xr-x - ext
drwxr-xr-x - src
drwxr-xr-x - test