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

[G. Branden Robinson]

Follow-up Comment #7, bug #42473 (project groff):

I keep finding things.  (I should probably stop and take a breath but this
document dump of the "Unix 4.0" manuals is like a kid's Christmas for me.)
 
I now think the filled-ness of the \(sq glyph in boldface was
device-dependent.

Why?  See the annotated table of contents for the aforementioned manuals.

https://www.tuhs.org/Archive/Documentation/Manuals/Unix_4.0/Volume_1/00_Annotated_Table_of_Contents.pdf

I'll "quote" it with another attachment.

For those without image support, it appears these manuals were typeset with
the Autologic APS-5, one of the first targets for device-independent troff
(after the C/A/T).

This also explains the addition of the word "original" before "Special
Mathematical Font" in the explanatory paragraph for Table 1 in comment #4. 
Contrast with the same paragraph in comment #3.

This is also consistent with the Murray Hill Bell Labs folks being so keen to
reverse engineer the font data format as documented in the famous, and for a
long time samizdat, paper "Experience with the Mergenthaler Linotron 202
Phototypesetter, or, How We Spent Our Summer Vacation" by Condon, Kernighan,
and Thompson.  Why pay a foundry exorbitant prices to code you a bespoke
typeface when you can do it yourself?

https://www.cs.princeton.edu/~bwk/202/summer.reconstructed.pdf

(file #53282)

    _______________________________________________________

Additional Item Attachment:

File name: unix_4.0_annotated_toc_typesetting.png Size:197 KB
   
<https://file.savannah.gnu.org/file/unix_4.0_annotated_toc_typesetting.png?file_id=53282>



    _______________________________________________________

Reply to this item at:

  <https://savannah.gnu.org/bugs/?42473>

_______________________________________________
Message sent via Savannah
https://savannah.gnu.org/