> chars_to_utf8(STRING)
>
> The chars in STRING are encoded in-place into UTF-8. Returns the new
> size of STRING, or C<undef> if there's a failure.
>
> No assumptions are made on the encoding of the chars. If you want to
> assume that the chars are Unicode and to trap illegal Unicode
> characters, you must use C<from_to('Unicode', ...)>.
OK, I can understand why the second paragraph is included here.
> chars_to_utf8(STRING, FROM [, CHECK])
>
> The chars in STRING encoded in FROM are recoded in-place into UTF-8.
> Returns the new size of STRING, or C<undef> if there's a failure.
>
> No assumptions are made on the encoding of the chars. If you want to
> assume that the chars are Unicode and to trap illegal Unicode
> characters, you must use C<from_to('Unicode', ...)>.
I do not understand the last paragraph in this section. Isn't it
contradicted by the first paragraph? The STRING is assumed to have
the encoding that is specified as FROM, right?
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