[XeTeX] Performance of ucharclasses

[Philip TAYLOR (Webmaster, Ret'd)]

Vafa Khalighi wrote:
> No, the license of the package in not LPPL. In fact, it is non-free and that is why it is not included in TeXLive. The README in "License" section says:
>
> You
>   may freely use this package, but you are discouraged from
>   modifying this package and then redistributing it. Instead,
>   please contact me (ideally on the XeTeX mailing list) and
>   we can discuss the changes you wish to make. If they
>   benefit everyone, they will be worked in as a new version.

Is "discouraged from" (or even "strongly discouraged from")
actually inconsistent with the /requirements/ of LPPL (as
opposed to the /spirit/ of LPPL) ?

Philip Taylor