Creates `.phpcomplete_extended` even when told not to

[cprn]

It's a 24M file each time + changes to the working copy even though I answered "no".

~/tmp/test$ ls -hal
total 16K
drwxrwxr-x 14 user user 4,0K lip 19 12:15 vendor
-rw-rw-r--  1 user user  508 lip 19 12:14 composer.json

~/tmp/test$ vi +:q

Then Neovim asks:

Composer project detected, Do you want to create index? [yes/no]: no

~/tmp/test$ ls -hal
total 20K
drwxr-xr-x  2 user user 4,0K lip 19 12:17 .phpcomplete_extended
drwxrwxr-x 14 user user 4,0K lip 19 12:15 vendor
-rw-rw-r--  1 user user  508 lip 19 12:14 composer.json

~/tmp/test$ l .phpcomplete_extended/
total 24M
-rw-rw-r-- 1 user user 24M lip 19 12:17 core_index
-rw-rw-r-- 1 user user  95 lip 19 12:17 index_cache