> Browsers do not care about line length, UNIX, Mac,
> Unicode or DOS conventions.

This is true, but HTTrack edits the mirrored files. It 
changes the links to relative links pointing to the 
localised targets rather than the targets on the web.
If, in the process of doing this, it truncates lines in 
the HTML source because it cannot cope with very long line 
lengths, the result will be loss of data and whatever 
browser you use, even one that can cope with any line 
length you throw at it, cannot display what is missing.


> If someone wants to edit the pages (mirrored or saved
> as) he will need a good text editor.
> Context is a nice editor (freeware) with Windows.

Yes, I use Metapad <http://liquidninja.com/metapad/>
which allows you to choose from file formats:
DOS, Unix, Unicode, Unicode (Big Endian)

This is not a severe problem in itself, just an annoyance 
(also see my corrections in my reply to Xavier), but I 
suspect that it may be linked to the truncation bug.