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Re: music-font-encodings option


From: Werner LEMBERG
Subject: Re: music-font-encodings option
Date: Mon, 03 Apr 2023 13:34:06 +0000 (UTC)

>>> Essentially, this option switches between the `show` and `glyphshow`
>>> PostScript operators to access Emmentaler glyphs.  The former is
>>> considered the 'standard' method for accessing glyphs in a PS file
>>> (according to the GS developers); however, it needs properly set up
>>> encoding vectors (which can't exceed a size of 256 glyphs each).  The
>>> latter is slower, AFAIK, and apparently not as well supported with GS
>>> (at least, we filed some bug reports, IIRC).
>>
>> Thanks, that helps. However, I still don't understand what impact on
>> size this makes. Do the two result in different PDF primitives?

Yes.  There is no equivalent to `glyphshow` in PDF.  For some comments
on that see, for example,

  https://bugs.ghostscript.com/show_bug.cgi?id=698305#c10
  https://bugs.ghostscript.com/show_bug.cgi?id=695259

BTW, you get a bunch of LilyPond-related GhostScript bug reports if you
search for 'lilypond' in both open and closed bugs in its tracker at

  https://bugs.ghostscript.com

Some of them are quite interesting to read and point to potential
deficiencies in LilyPond's font handling.


    Werner

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