GNU bug report logs - #7786
23.2; Encoding of PostScript files

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Peter Dyballa <Peter_Dyballa <at> Freenet.DE>
Cc: 7786 <at> debbugs.gnu.org
Subject: bug#7786: 23.2; Encoding of PostScript files
Date: Wed, 13 Oct 2021 15:51:48 +0200

Peter Dyballa <Peter_Dyballa <at> Freenet.DE> writes:

> This is incorrect, because, as PRML, The PostScript® Language
> Reference manual, explains in a footnote near the end, on encodings:
>
> 	3. The ISOLatin1Encoding encoding vector deviates from the ISO
> 	8859-1 standard in one
> 	   respect: the character at position 140 is quoteleft,
> 	   whereas the ISO standard specifies
> 	   grave. A PostScript program needing to conform exactly to
> 	   the ISO standard should
> 	   create a modified encoding vector with this entry changed.

This seems to be incorrect.

https://en.wikipedia.org/wiki/PostScript_Latin_1_Encoding
https://en.wikipedia.org/wiki/ISO/IEC_8859-1

differ in a whole bunch of places.  In addition, ISOLatin1Encoding is
not the same as stdenc (which is what adobe-standard-encoding uses):

https://unicode.org/Public/MAPPINGS/VENDORS/ADOBE/stdenc.txt

Emacs doesn't seem to have any support for ISOLatin1Encoding:

"In 1995, IBM assigned code page 1277 (CCSID 1277) to this character set."

Unless we have it under some other name.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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