How to invoke a spell checker ?

[Seb]

Hello,


Once upon a time, with a 6.xx series Nano, I would invoke a spell checker 
on an entire file by pressing ^T. I have the following line in ~/.nanorc:
        set speller "aspell -l FR -t -x -c"
(which means "French", "TeX", "no backup", "check a file").

Now if I try to spell check an entire file with Nano 8.0, with ^T^T, I get 
the following white-on-red error message:
         Program 'aspell' complained

To know more, I tried ^T then inputing
        aspell -l FR -t -x -c
which yields
         Error: You must specify a file name.
Same if I leave only
        aspell -c

If I leave only
        aspell -l FR -t -x
I get
        Error: You must specify an action

I have searched for "spell" on the online up-to-date man page and FAQ, but 
could not figure out what I'm doing wrong. I must have missed something.

Can someone point me to the correct way to invoke a spell checker 
(preferably aspell) in Nano 8.0?


Thanks!
Sébastien.