From: "Peter Kirk" <[EMAIL PROTECTED]>
> Does this equivalence hold when combining characters are applied to the
> NBSP? Is the sequence <NBSP, CC> (recommended for spacing diacritics,
> where CC is any sequence of combining characters) equivalent to <ZWNBS,
> SP, ZWNBS, CC>? Or should the equivalence be to <ZWNBS, SP, CC, ZWNBS>?
> Is it legal to combine combining characters with ZWNBS, or WJ, and how
> should this be rendered?
This is not an equivalence: despite <NBSP> should be treated as if it was
<WJ,SP,WJ>
when it is found isolately, this does not apply when it is followed by a
combining character (CC). So, <NBSP,CC> must not be treated as if it was:
<WJ,SP,WJ,CC>
but really rather as:
<WJ,SP,CC,WJ>
Note here the inversion. Note also that all these sequences are NOT
canonically equivalent, meaning that it is impossible to define a formal
equivalence between <NBSP> and <ZW,SP,WJ>.
