Some tests for buffer-local autocommands

STARTTEST
:so small.vim
:e xx
:!rm -f test.out
:au BufLeave <buffer> :!echo "buffer-local autommand in %" >> test.out
:e somefile           " here, autocommand for xx shall write test.out 
:                     " but autocommand shall not apply to buffer named <buffer>
:bwipe xx             " here, autocommand shall be auto-deleted
:e xx                 " nothing shall be written
:e somefile           " nothing shall be written
:qa!
ENDTEST

start of test file xx
end of test file xx