[gs-bugs] [Bug 691861] PDF does not display

Mon Jan 17 10:28:27 UTC 2011

http://bugs.ghostscript.com/show_bug.cgi?id=691861

Ken Sharp <ken.sharp at artifex.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |INVALID

--- Comment #3 from Ken Sharp <ken.sharp at artifex.com> 2011-01-17 10:28:27 UTC ---
(In reply to comment #2)

> Why doesn't GS, as a simple fail-back measure, try to find a non-CID font of
> the same name ?

Because is not possible to use a Font as a substitute for a CIDFont, the two
are quite different. For starters a CID-keyed instance of a font will use
multiple bytes per glyph, whereas a Font will *always* use a single byte per
glyph. CIDFonts are generally only used when composed with a CMap in order to
create a CID-Keyed instance of a font. You can't combine a Font with a CMap to
create a CID-Keyed instance.

See the PostScript Language Reference Manual, section 5.11 "CID-Keyed Fonts"
for more information about CIDFonts.

Note that Adobe Acrobat is unable to find a replacement font for
'ArabicTransparent' and instead substitutes Adobe's own CIDFont 'Adobe Sans MM'
which doesn't seem likely to me to be correct.

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