bug#41958: ps-print-buffer only knows about some fonts for MacOS Preview

[James P. Ascher]

I use ps-print to produce a PostScript file that I open in MacOS Preview to
double-check before printing.  I'd like to be able to use Hack as a font
rather than Courier.  Right now, Hack isn't recognized along with other
installed fonts, but I can't tell why some work and some don't.


Following the directions in ps-print.el, I tried to add Hack as
a Courier replacement.  I removed the comment and updated this line:

3 cm 20 cm moveto  10/Hack-Regular ReportFontInfo  showpage

Opening the resulting PostScript file in Preview.app gives this error:


PostScript Conversion Warning

Converting the PostScript file "temp.ps" produced the following
warnings: "Hack-Regular" not found, using Courier.


Similarly for "Hack" or "Hack-Italic."  In trying to debug the problem,
I checked fonts on my laptop at random to see if any worked.
AmericanTypewriter-Light works fine while AmericanTypewriter gives the
same error, even though both are in the same directory and seem to be
otherwise similar.  I'll paste the details of those two fonts below, but
I think there must be something in the PostScript generated by ps-print
that doesn't load all the fonts.  Pages, for example, generates
a PostScript file with Hack, but it looks remarkably different than what
ps-print generates--so I'm not entirely sure what to compare.

I'm not sure what to do next to debug this: my PostScript knowledge is
minimal.  Does anyone have a sense of how to figure this out?


Emacs 26.3
MacOS 10.15.5
ps-print.el 7.3.5

Font details from Font Book:

WORKING as "AmericanTypewriter-Light":

PostScript name AmericanTypewriter-Light
        Full name       American Typewriter Light
        Family  American Typewriter
        Style   Light
        Kind    TrueType
        Language        Afrikaans, Albanian, Asturian, Asu, Azerbaijani, 
Basque, Belarusian, Bemba, Bena, Bosnian, Breton, Bulgarian, Catalan, Chiga, 
Colognian, Cornish, Croatian, Czech, Danish, Dutch, Embu, English, Esperanto, 
Estonian, Faroese, Filipino, Finnish, French, Friulian, Galician, Ganda, 
German, Greek, Gusii, Hawaiian, Hungarian, Icelandic, Igbo, Inari Sami, 
Indonesian, Irish, Italian, Jola-Fonyi, Kabuverdianu, Kalaallisut, Kalenjin, 
Kamba, Kazakh, Kikuyu, Kinyarwanda, Lakota, Latvian, Lithuanian, Lower Sorbian, 
Luo, Luxembourgish, Luyia, Macedonian, Machame, Makhuwa-Meetto, Makonde, 
Malagasy, Malay, Maltese, Manx, Meru, Meta=CA=BC, Mongolian, Morisyen, North 
Ndebele, Northern Sami, Norwegian Bokm=C3=A5l, Norwegian Nynorsk, Nyankole, 
Oromo, Ossetic, Polish, Portuguese, Quechua, Romanian, Romansh, Rombo, Rundi, 
Russian, Rwa, Samburu, Sango, Sangu, Scottish Gaelic, Sena, Serbian, Shambala, 
Shona, Slovak, Slovenian, Soga, Somali, Spanish, Swahili, Swedish, Swiss 
German, Taita, Tajik, Teso, Tongan, Turkish, Turkmen, Ukrainian, Upper Sorbian, 
Uzbek, Vietnamese, Vunjo, Walser, Welsh, Western Frisian, Yoruba, Zulu
        Script  Cyrillic, Greek, Latin, Tagalog
        Version 13.0d1e4
        Location        
/System/Library/Fonts/Supplemental/AmericanTypewriter.ttc
        Unique name     American Typewriter Light; 13.0d1e4; 2017-06-07
        Copyright       Digitized data (c) Copyright 1997 E+F Designstudios. 
ITC American Typewriter is a registered trademark of International Typeface 
Corporation.
        Trademark       ITC American Typewriter is a registered trademark of 
International Typeface Corporation.
        Enabled Yes
        Duplicate       No
        Copy protected  No
        Glyph count     1,195

GIVES ERROR as "AmericanTypewriter":

PostScript name AmericanTypewriter
        Full name       American Typewriter
        Family  American Typewriter
        Style   Regular
        Kind    TrueType
        Language        Afrikaans, Albanian, Asturian, Asu, Azerbaijani, 
Basque, Belarusian, Bemba, Bena, Bosnian, Breton, Bulgarian, Catalan, Chiga, 
Colognian, Cornish, Croatian, Czech, Danish, Dutch, Embu, English, Esperanto, 
Estonian, Faroese, Filipino, Finnish, French, Friulian, Galician, Ganda, 
German, Greek, Gusii, Hawaiian, Hungarian, Icelandic, Igbo, Inari Sami, 
Indonesian, Irish, Italian, Jola-Fonyi, Kabuverdianu, Kalaallisut, Kalenjin, 
Kamba, Kazakh, Kikuyu, Kinyarwanda, Lakota, Latvian, Lithuanian, Lower Sorbian, 
Luo, Luxembourgish, Luyia, Macedonian, Machame, Makhuwa-Meetto, Makonde, 
Malagasy, Malay, Maltese, Manx, Meru, Meta=CA=BC, Mongolian, Morisyen, North 
Ndebele, Northern Sami, Norwegian Bokm=C3=A5l, Norwegian Nynorsk, Nyankole, 
Oromo, Ossetic, Polish, Portuguese, Quechua, Romanian, Romansh, Rombo, Rundi, 
Russian, Rwa, Samburu, Sango, Sangu, Scottish Gaelic, Sena, Serbian, Shambala, 
Snhona, Slovak, Slovenian, Soga, Somali, Spanish, Swahili, Swedish, Swiss 
German, Taita, Tajik, Teso, Tongan, Turkish, Turkmen, Ukrainian, Upper Sorbian, 
Uzbek, Vietnamese, Vunjo, Walser, Welsh, Western Frisian, Yoruba, Zulu
        Script  Cyrillic, Greek, Latin, Tagalog
        Version 13.0d1e4
        Location        
/System/Library/Fonts/Supplemental/AmericanTypewriter.ttc
        Unique name     American Typewriter; 13.0d1e4; 2017-06-07
        Copyright       Digitized data (c) Copyright 1997 E+F Designstudios. 
ITC American Typewriter is a registered trademark of International Typeface 
Corporation.
        Trademark       ITC American Typewriter is a registered trademark of 
International Typeface Corporation.
        Enabled Yes
        Duplicate       No
        Copy protected  No
        Glyph count     1,195


Respectfully submitted,
-James

--
James P. Ascher
Doctoral Student, English Department
University of Virginia