> But forcing "php" as "text/html" will actually tell
> httrack that "php is text/html", _and_ "text/html
> has php as natural type", hence the extension won't
> be modified. This is a side effect of the mime type
> vs. file type aliases.

Forcing a type is because of a bad site.  Side effect = bug.

Also, after removing them, there is still .shtml