Re: whitespace includes U+3000

[Richard Stallman]

     > However, on second thought, I've concluded that
     > show-trailing-whitespace doesn't need to know about NBSP at all.
     > Since NBSP is now indicated on the screen by a color, it is no longer
     > likely to go unnoticed.  So there is no problem with NBSP and
     > show-trailing-whitespace.

    That is true by default, but not if the user has set
    nobreak-char-display to nil.  I think show-trailing-whitespace should
    DTRT even if the user has made such a customization and ensure that the
    trailing whitespace is indicated.

I won't object, if someone wants to do it.