🚀 go-pugleaf

In article <John_Jenkins-1408951759010001@tseng.taligent.com>
John_Jenkins@taligent.com (John H. Jenkins) writes:
>Please be aware that the Han ideographic portion of ISO/IEC 10646 (and
>hence Unicode) is formally defined via mapping tables, and *NOT* by visual
>appearance.

Oh, really?  Unicode Standard Book says that "Only characters that
have the same abstract shape (occupy a single point on the Y-axis)
are potential candidates for unification."  So I pointed out them
as bugs.

For example, U+4E89 is unifies the three characters below:
    53-89 of GB2312-80
	     ;,   ,
	   ,;'''';;'
	 ,;;,,,,;;,,;,
	'     ;;   ;;
	'''''';;''';;''
	  ,,,,;;,,,;;
	      ;;   '
	    '';'
    0x2265 of the 14th plane of CNS11643-1986
	    ,;,,,,,,
	  ,;'   ,;'
	'';,,,,;;,,,,,
	,,,,,,,;,,,,,;,,
	  ,,,,,;,,,,,;
	       ;
	     ','
    41-68 of JIS X 0208-1990
	    ,;,,,,,,
	  ,;'   ,;'
	'';,,,,;;,,,,,
	       ;     ;
	''''''';''''';''
	  ,,,,,;,,,,,;
	       ;
	     ,,;
and U+722D unifies the four characters below:
    53-89 of GB/T12345-90
	     ;,   , 
	   ,;'''';;'  
	 ,;;,,,,;;,,;,
	'     ;;   ;;  
	'''''';;''';;''
	  ,,,,;;,,,;;
	      ;;   '
	    '';'
    0x4E68 of the 1st plane of CNS11643-1986
	 ,,,,,,,,,,,''
	  ',  ',   ,'
	  ,,;,,,;,;,,
	,,,,,,,;,,,,;,,
	  ,,,,,;,,,,;
	       ;    '
	     ','
    60-27 of JIS X 0208-1990
	       ,,,,;'
	   ;''';,  ';,
	 ,;',,,,;,,,,''
	       ;    ;
	''''''';'''';'''
	   ,,,,;,,,,;
	       ;
	     ,,;
    78-19 of KS C 5601-1987
	    ,,,,'''';   
	  ,'    ',   ', 
	 ' ,,,,,,,,,,,  
	        ;    ;  
	 ''''''';'''';''
	   ,,,,,;,,,,;  
	        ;       
	      ,,;       
Here I find that 53-89 of GB2312-80 and 53-89 of GB/T12345-90 have the
similar shape.  Why are they distinguished?  Isn't it really a bug?

						Koichi Yasuoka