Re: [Devel] CFF fonts assume Type 2 charstrings

[Tom Kacvinsky]

Have you ever seen a CFF font which uses anything but Type 2 char strings? As
far as I know, no tool out there makes CFF fonts with non-"Type 2" charstrings,
so this is a non-issue, despite what Adobe's docs say.

You can always email the Adobe font folks if you do not believe me. :)

Regards,

Tom

On 2002/08/08 at 21:37, Graham Asher <address@hidden> wrote:

> Dear FreeTypers,
> 
> is this an error? The CFF driver assumes that charstrings are Type 2, and
> has no provision for other types. I believe this from the fact that
> top->charstring_type is correctly set but never referred to.
> 
> However, the Compact Font Format Specification
> (http://partners.adobe.com/asn/developer/pdfs/tn/5176.CFF.pdf) states that
> 
> "The format of the charstring data, and therefore the method of
> interpretation, is specified by the CharstringType operator in
> the Top DICT. The CharstringType operator has a default value
> of 2 indicating the Type 2 charstring format which was designed
> in conjunction with CFF. Type 1 charstrings are documented in
> the “Adobe Type 1 Font Format” published by Addison-Wesley.
> Type 2 charstrings are described in Adobe Technical Note #5177:
> “Type 2 Charstring Format.” Other charstring types may also be
> supported by this method."
> 
> I believe, therefore, that the CFF driver should be changed so that, at
> least, it supports Type 1 charstring format.
> 
> Best regards,
> 
> Graham Asher
> 
> 
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