[bug #63018] [PATCH] make glyphs in ZD font accessible via their Unicode spellings

[G. Branden Robinson]

Update of bug #63018 (group groff):

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

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Follow-up Comment #27:

[comment #26 comment #26:]
> I have been investigating the AFMs contained in the tar files Branden
referenced in comment #15.

Oh, cool, you tracked 'em down.  I couldn't remember if I had renamed them for
my own benefit or if I found them on the Web with those names.

> Using the 229 versions it is possible to generate the 35 fonts for grops.
The only difference is that our fonts include kerning data for the ellipsis
font which is not included in the AFMs, because commit 81b4ffadc1ced modified
the files via a shell script to duplicate the full stop kerning information to
ellipsis.

And Dave just happens to be right here, ready for the spotlight. ;-)
 
> I have only tested the TR and TI fonts and I used the following afmtodit
commands:-
> 
> ./afmtodit -c -i0 -m -e ../font/devps/text.enc
Adobe-Core35_AFMs-229/Times-Roman.afm font/devpdf/map/text.map DJTR
> 
> ./afmtodit -c -i50 -a7 -e ../font/devps/text.enc
Adobe-Core35_AFMs-229/Times-Italic.afm font/devpdf/map/text.map DJTI
> 
> For italic fonts you need to ensure that the "slant" value (-a) matches the
value used previously, (in case of Times-Italic the AFM has an Italic Angle of
15.5, but the groff font was clearly produced with a slant of 7, i.e. it was
overridden with the -a flag). I don't know why this was done, it is the only
one with such an override:-

[snip]

> Maybe some people on the list may know.

I'm afraid I don't have any insight into that decision.

More broadly, I wonder if this slant value selection is related to the gripe
this month on the development list about Hungarian umlauts.

> It is a good thing Branden found the AFMs since the conversion from afm to a
groff font is not completely reversible.

Maybe it is time we extended afmtodit with whatever features we need to make
possible a fully automatic transformation from the Adobe AFMs, which are
certainly fully fossilized by now, to _groff_ font description files.

To that end, I am reassigning the ticket to you, Deri, but setting status to
"None" so as to not prejudge the next step you take.

You can of course reassign it again if you like.


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