[bug #42473] \(sq is historically a filled square if the font is bold

[Ralph Corderoy]

URL:
  <http://savannah.gnu.org/bugs/?42473>

                 Summary: \(sq is historically a filled square if the font is
bold
                 Project: GNU troff
            Submitted by: ralph
            Submitted on: Sat 31 May 2014 11:37:23 GMT
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

Carsten Kunze reported an issue with \(sq to the list: 
http://lists.gnu.org/archive/html/groff/2014-05/msg00042.html

Apparently, \(sq is normally an empty square, as shown in CSTR 54, but filled
if the font is bold.  That's with 7th Edition troff and Heirloom troff.  The
latter does this for PostScript output using the PostScript in
troff/troff.d/font/devpost/charlib/sq which checks for Bold/Heavy/Ultra fonts.
 I don't think it does it for UTF-8 terminal output.

More research into 7th Ed./Plan 9's behaviour is needed to determine it's a
deliberate effect and reproduce it across output devices.




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