129K:2018/08/27

     1.BUGs
       -Around processing of UTF8 file.
         .DisplayCellWidth was reviced.
         .Trouble around displaying UCS4,SpacingCombiningMarks adn NonSpacingMark.
         .Expanded Maxmum combining up to 8 chracters.(case of Tibtan)
          For Linux Console version max is yet 4 characters.
         .When unicode>=U01000(Windows) or unicode>=U020000(Linux)
            -Invalid hexcode display on top-left header line.
            -Could not update on vertical hex display line.
         .(LNX)When U01000<= unicode  ] [ No= ] [ CharSet={|?} ]
                            [ H= ] [ W= ] [ Weight= ]
        *******************************************************************************
           :Partial string of FontName(StartsWith).
                   "*" means current font.
                   Prefix:"*" means Contains.
           :Select font by SeqNo from listed fonts,
                   to allow name is not full specification.
         :Select filtering by charset.
                   List available value by "charset=?".
          :Font Height. "*" means copy from current.
           :Font Width. "*" means copy from current.
                   if missing, calculated from height.
          :Weight. specify Regular/Bold.
                   if missing, adopted from selected font.
          /options
             /A:Accept System Selection.
                Not restore even when system set differently from requested.
             /B:Select Not TrueType fonts(Raster) only.
             /D:Detail Query Information.
             /F:Select Fixed Pitch fonts only.
             /Q:Query candidate fonts.
             /T:Select TrueType fonts only.
             /V:Select Variable Pitch fonts only.
         e.g. ----- (all are case insensitive) -----
           xcfont /Q charset=222     ; List fonts of charset:THAI.
           xcfont charset=?          ; List available charset .
           xcfont /Qf                ; List FixedPitch font.
           xcfont /Q *               ; Show current font set.
           xcfont /Q Microsoft       ; List fontname starting with "Microsoft".
           xcfont /Q *Sans           ; List fontname containing "Sans".
           xcfont Microsoft No=2     ; Select second font listed by "Microsoft".
           xcfont SimSun charset=238 ; Select SimSun with charset:EASTEUROPE.
           xcfont Tahoma H=*         ; H=current, W=H*rate of W/H of selected.
           xcfont * H=16 W=10        ; Update current font sizes
           xcfont * Weight=Bold      ; Set current font weight to Bold
           chcp 57002                ; 57002:Devanagari, "Mangal" requires it.
           xcfont Mangal H=*         ; Codepage will be listed by "xcv /list".