vi called from less starts at BOF

[Thomas Klausner <tk%giga.or.at@localhost>]

On 6.99.16/amd64 (less 444), when I look at a file with less and press
'v' for calling vi on the current line, it does start vi, but at the
beginning of the file, not on the current line.

It doesn't work on another 5.99.40/amd64 (less 394) either, but it
_does_ work on a 5.1_STABLE/amd64 (less 394).

Since 5.1 and 5.99.40 have the same less(1) version, I guess it might
be something in my env. I looked at VISUAL, EDITOR, and LESSEDIT, but
couldn't find out what the difference was between the machines where
it works and the ones where it doesn't.

Any ideas?
 Thomas