bug#26477: what-cursor-position should mention "U+"

["積丹尼 Dan Jacobson" <jidanni@jidanni.org>]

C-x = (translated from <return>) runs the command what-cursor-position
(found in global-map), which is an interactive compiled Lisp function
in ‘simple.el’.

says:

             position: 120538 of 121236 (99%), column: 0
            character: ○ (displayed as ○) (codepoint 9675, #o22713, #x25cb)
    preferred charset: chinese-big5-1 (Frequently used part (A141-C67E) of Big5 (Chinese traditional))
code point in charset: 0x2172
               script: symbol
               syntax: _ 	which means: symbol
             category: .:Base, c:Chinese, h:Korean, j:Japanese
             to input: type "C-x 8 RET 25cb" or "C-x 8 RET WHITE CIRCLE"
          buffer code: #xE2 #x97 #x8B
            file code: #xE2 #x97 #x8B (encoded by coding system utf-8-unix)
              display: by this font (glyph code)
    x:-eten-fixed-medium-r-normal--16-150-75-75-c-160-big5.eten-0 (#xA1B3)

Character code properties: customize what to show
  name: WHITE CIRCLE
  general-category: So (Symbol, Other)
  decomposition: (9675) ('○')

Why can't it say U+25CB WHITE CIRCLE
anywhere (except fragmented all over the place)?

$ unicode ○
U+25CB WHITE CIRCLE
UTF-8: e2 97 8b UTF-16BE: 25cb Decimal: &#9675; Octal: \022713
○
Category: So (Symbol, Other)
Unicode block: 25A0..25FF; Geometric Shapes
Bidi: ON (Other Neutrals)

P.S., "translated from return"
was due to  C-x <escape> <escape> [repeat-complex-command].