Proposal:
The Unicode Standard has the principle that if an accent is applied to an i or j, the base character loses its dot. Such characters are called "soft-dotted". If it is desired to retain the dot on a soft-dotted character, an additional combining dot above can be used. The following example shows both situations:
The Unicode Technical Committee proposes to extend the list of characters with the Soft_Dotted property to the include the list below, and would like to get confirmation that this matches the behavior expected by the user communities, in particular that including U+2148, U+2149 and the characters in the range U+1D422 through U+1D693 is compatible with MathML.
List of current Soft_Dotted characters:
0069..006A ; Soft_Dotted # L& [2] LATIN SMALL LETTER I..LATIN SMALL LETTER J
012F ; Soft_Dotted # L& LATIN SMALL LETTER I WITH OGONEK
0268 ; Soft_Dotted # L& LATIN SMALL LETTER I WITH STROKE
0456 ; Soft_Dotted # L& CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
0458 ; Soft_Dotted # L& CYRILLIC SMALL LETTER JE
1D62 ; Soft_Dotted # L& LATIN SUBSCRIPT SMALL LETTER I
1E2D ; Soft_Dotted # L& LATIN SMALL LETTER I WITH TILDE BELOW
1ECB ; Soft_Dotted # L& LATIN SMALL LETTER I WITH DOT BELOW
2071 ; Soft_Dotted # L& SUPERSCRIPT LATIN SMALL LETTER I
List of proposed additional Soft_Dotted characters:
0133 ; Soft_Dotted # LATIN SMALL LIGATURE IJ
029D ; Soft_Dotted # LATIN SMALL LETTER J WITH CROSSED-TAIL
02B2 ; Soft_Dotted # MODIFIER LETTER SMALL J
03F3 ; Soft_Dotted # GREEK LETTER YOT
2148 ; Soft_Dotted # DOUBLE-STRUCK ITALIC SMALL I
2149 ; Soft_Dotted # DOUBLE-STRUCK ITALIC SMALL J
1D422 ; Soft_Dotted # MATHEMATICAL BOLD SMALL I
1D423 ; Soft_Dotted # MATHEMATICAL BOLD SMALL J
1D456 ; Soft_Dotted # MATHEMATICAL ITALIC SMALL I
1D457 ; Soft_Dotted # MATHEMATICAL ITALIC SMALL J
1D48A ; Soft_Dotted # MATHEMATICAL BOLD ITALIC SMALL I
1D48B ; Soft_Dotted # MATHEMATICAL BOLD ITALIC SMALL J
1D48A ; Soft_Dotted # MATHEMATICAL BOLD ITALIC SMALL I
1D48B ; Soft_Dotted # MATHEMATICAL BOLD ITALIC SMALL J
1D4BE ; Soft_Dotted # MATHEMATICAL SCRIPT SMALL I
1D4BF ; Soft_Dotted # MATHEMATICAL SCRIPT SMALL J
1D4F2 ; Soft_Dotted # MATHEMATICAL BOLD SCRIPT SMALL I
1D4F3 ; Soft_Dotted # MATHEMATICAL BOLD SCRIPT SMALL J
1D526 ; Soft_Dotted # MATHEMATICAL FRAKTUR SMALL I
1D527 ; Soft_Dotted # MATHEMATICAL FRAKTUR SMALL J
1D55A ; Soft_Dotted # MATHEMATICAL DOUBLE-STRUCK SMALL I
1D55B ; Soft_Dotted # MATHEMATICAL DOUBLE-STRUCK SMALL J
1D58E ; Soft_Dotted # MATHEMATICAL BOLD FRAKTUR SMALL I
1D58F ; Soft_Dotted # MATHEMATICAL BOLD FRAKTUR SMALL J
1D5C2 ; Soft_Dotted # MATHEMATICAL SANS-SERIF SMALL I
1D5C3 ; Soft_Dotted # MATHEMATICAL SANS-SERIF SMALL J
1D5F6 ; Soft_Dotted # MATHEMATICAL SANS-SERIF BOLD SMALL I
1D5F7 ; Soft_Dotted # MATHEMATICAL SANS-SERIF BOLD SMALL J
1D62A ; Soft_Dotted # MATHEMATICAL SANS-SERIF ITALIC SMALL I
1D62B ; Soft_Dotted # MATHEMATICAL SANS-SERIF ITALIC SMALL J
1D65E ; Soft_Dotted # MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL I
1D65F ; Soft_Dotted # MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL J
1D692 ; Soft_Dotted # MATHEMATICAL MONOSPACE SMALL I
1D693 ; Soft_Dotted # MATHEMATICAL MONOSPACE SMALL J