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[bug #42473] \(sq is historically a filled square if the font is bold
From: |
G. Branden Robinson |
Subject: |
[bug #42473] \(sq is historically a filled square if the font is bold |
Date: |
Mon, 6 Jun 2022 03:24:17 -0400 (EDT) |
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)
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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>
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