Re: Display of undisplayable characters: \U01F3A8 instead of diamond

[Emanuel Berg]

Eli Zaretskii wrote:

>>> It is also displayed in a distinct face, designed to make
>>> this stand out.
>> 
>> It looks like it is Bright Yellow (ANSI 3) but it's not of
>> any Emacs face that my tools detect so that must be handled
>> in some special way if so ...
>
> There's nothing special about its face.

Try do

  M-x describe-face RET RET

or

  (get-char-property (point) 'face)
  
or

  (get-char-property (point) 'read-cf-name)

nothing!

Unless there is a face already, but then it still don't have
that color ...

Even when no face is reported, it isn't the default color
either (again, it is bright yellow). But I can set to red like
this ...

(defun set-all-faces (fg &optional bg weight)
  (let ((backg (or bg     "black"))
        (wght  (or weight 'normal))
        (faces) )
    (mapatoms (lambda (s)
                (when (facep s)
                  (push (symbol-name s) faces) )))
    (dolist (f faces)
      (set-face-attribute (intern f) nil
                          :foreground fg)
                          :background backg
                          :weight     wght
                          :italic     nil) ))
;; (set-all-faces "red")

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