[Bug 226518] [patch] japanese/font-kappa20: Cannot use the font files with the latest x11-fonts/libXfont

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226518

            Bug ID: 226518
           Summary: [patch] japanese/font-kappa20: Cannot use the font
                    files with the latest x11-fonts/libXfont
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs at FreeBSD.org
          Reporter: CQG00620 at nifty.ne.jp
                CC: ginga-freebsd at ginganet.org, x11 at FreeBSD.org
                CC: ginga-freebsd at ginganet.org, x11 at FreeBSD.org

As described in bug #225125, japanese/font-kappa20 has not been usable
since the latest update of x11-fonts/libXfont (CVE-2017-16611).

Because japanese/font-kappa20 installs font files as symbolic links,
and the latest x11-fonts/libXfont does not handle other than regular
font files.

* How to repeat
** Without the patch

 $ pkg info --show-name-only libXfont
 libXfont-1.5.4,2                       # > 1.5.2,2
 $ pkg install ja-font-kappa20
 $ xset fp rehash
 $ xlsfonts -fn k20m
 k20m
 $ xlsfonts -ll -fn k20m
 xlsfonts:  unable to get info about font "k20m"
 $ 

** With the patch

 $ xset fp+ /usr/local/share/fonts/kappa20
 $ xlsfonts -fn k20m
 k20m
 $ xlsfonts -ll -fn k20m
 name:  k20m
   direction:            left to right
   indexing:             matrix
   rows:                 0x21 thru 0x74 (33 thru 116)
   columns:              0x21 thru 0x7e (33 thru 126)
   all chars exist:      no
   default char:         0x2121 (8481)
   ascent:               17
   descent:              3
   font type:            Character Cell
   bounds:               width left  right  asc  desc   attr   keysym
         min               20     0     0    -2   -16  0x0000
         max               20    14    20    17     3  0x0000
   properties:           21
       COPYRIGHT             public domain
       FONTNAME_REGISTRY     
       FOUNDRY               Kappa
       FAMILY_NAME           Mincho
       WEIGHT_NAME           Medium
       SLANT                 R
       SETWIDTH_NAME         Normal
       ADD_STYLE_NAME        
       PIXEL_SIZE            20
       POINT_SIZE            190
       RESOLUTION_X          75
       RESOLUTION_Y          75
       SPACING               C
       AVERAGE_WIDTH         200
       CHARSET_REGISTRY      JISX0208.1990
       CHARSET_ENCODING      0
       FONT                 
-Kappa-Mincho-Medium-R-Normal--20-190-75-75-C-200-JISX0208.1990-0
       WEIGHT                10
       RESOLUTION            103
       X_HEIGHT              -2
       QUAD_WIDTH            20

 $ 

* How to fix

(1) Install font files to ${FONTSDIR} instead of ${DATADIR}.
(2) Stop to make symbolic links from the font files to 
    ${PREFIX}/share/fonts/misc/, which is found in the default font path.
(3) Add pkg-message.in to display additional font path settings
    (Copied from head/japanese/k10, r397891 with typo fix).

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