Hard-wrapping "long" lines?

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Hello,


I recently upgraded to Nano 8.7.

Since then, lines do not seem to hard wrap: I open Nano on a file, start 
writing, and when I reach the right end of the terminal the cursor does 
not come back to the first column.

I also tried with "nano -I".

If I'm reading "man nanorc" correctly (online), "set breaklonglines" 
should tell Nano to hard-wrap. The man says "when it becomes overlong", 
which I interpret as "longer than the terminal's width", but maybe it 
means something else.

Anyway, it doesn't seem to work. To check that this option was not 
overriden by another, I made a .nanorc containing just this one line.

What am I doing wrong?

How can I get lines to hard-wrap again?


Thanks!
Sébastien.

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