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

[G. Branden Robinson]

Update of bug #42473 (project groff):

                  Status:               Confirmed => Need Info              
             Assigned to:                    None => gbranden               

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Follow-up Comment #3:

I question the provenance of the troff used in the original report to the
mailing list.

It appears that V7 troff did not behave this way, if we go by ISBN
0-03-061743-X.

> 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

I'd like to know how the above claim was substantiated without access to the
C/A/T's photographic plate for the Times Bold face, or to camera-ready copy
from same--however the latter is precisely what we appear to have in the form
of Volume 2 of the Seventh Edition Unix manuals, and that evidence directly
contradicts the claim.

See attachment.

There is a re-typeset version of V7 Volume 2 floating around on the Internet. 
It is wrong.  The little rectangles indicating unavailable glyphs betray its
inauthentic origin.  Recent versions of the groff_char(7) man page warn about
this.

Considering history _since_ 1991, Unicode doesn't unify outlined and filled
squares, and I think that should factor into how we define '\(sq' for groff.

Setting Status to "Need Info".  I intend to close this ticket as invalid if
compelling information is not brought to light.

(file #53243)

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Additional Item Attachment:

File name: CSTR_54_1976_Table_2_HRW_1983.png Size:257 KB
   
<https://file.savannah.gnu.org/file/CSTR_54_1976_Table_2_HRW_1983.png?file_id=53243>



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